Implement External Texture Crop Functionality

Adds to the External Texture shader transform to allow cropping. Tests
included.

Bug: chromium:1316671
Change-Id: Id0ec9acac22a0968ba6847d6ead9cf5084eaca88
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/113281
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>

test/tint/builtins/gen/literal/textureDimensions/cdc6c9.wgsl.expected.dxc.hlsl

@@ -1,6 +1,6 @@
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 

test/tint/builtins/gen/literal/textureDimensions/cdc6c9.wgsl.expected.fxc.hlsl

@@ -1,6 +1,6 @@
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 

test/tint/builtins/gen/literal/textureDimensions/cdc6c9.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 uniform highp sampler2D arg_0_1;
@@ -75,22 +64,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 uniform highp sampler2D arg_0_1;
@@ -126,22 +104,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 uniform highp sampler2D arg_0_1;

test/tint/builtins/gen/literal/textureDimensions/cdc6c9.wgsl.expected.msl

@@ -19,7 +19,7 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 void textureDimensions_cdc6c9(texture2d<float, access::sample> tint_symbol_1) {

test/tint/builtins/gen/literal/textureDimensions/cdc6c9.wgsl.expected.spvasm

@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,10 +30,9 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %textureDimensions_cdc6c9 "textureDimensions_cdc6c9"
@@ -46,14 +45,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -62,12 +61,13 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
+               OpMemberDecorate %ExternalTextureParams 4 Offset 96
+               OpMemberDecorate %ExternalTextureParams 5 Offset 128
+               OpMemberDecorate %ExternalTextureParams 5 ColMajor
+               OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 6 Offset 176
+               OpMemberDecorate %ExternalTextureParams 6 ColMajor
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
                OpDecorate %ext_tex_params NonWritable
                OpDecorate %ext_tex_params DescriptorSet 1
                OpDecorate %ext_tex_params Binding 2
@@ -89,11 +89,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
        %void = OpTypeVoid
          %23 = OpTypeFunction %void

test/tint/builtins/gen/literal/textureLoad/1bfdfb.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, u
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_1bfdfb() {

test/tint/builtins/gen/literal/textureLoad/1bfdfb.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, u
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_1bfdfb() {

test/tint/builtins/gen/literal/textureLoad/1bfdfb.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -60,12 +49,8 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, uve
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_1bfdfb() {
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, uvec2(1u), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, uvec2(1u), ext_tex_params.inner);
 }
 
 vec4 vertex_main() {
@@ -102,22 +87,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -144,12 +118,8 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, uve
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_1bfdfb() {
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, uvec2(1u), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, uvec2(1u), ext_tex_params.inner);
 }
 
 void fragment_main() {
@@ -180,22 +150,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -222,12 +181,8 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, uve
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_1bfdfb() {
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, uvec2(1u), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, uvec2(1u), ext_tex_params.inner);
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/textureLoad/1bfdfb.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {

test/tint/builtins/gen/literal/textureLoad/1bfdfb.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 155
+; Bound: 139
 ; Schema: 0
                OpCapability Shader
          %29 = OpExtInstImport "GLSL.std.450"
@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,31 +30,20 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureLoadExternal "textureLoadExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
                OpName %coord "coord"
                OpName %params_0 "params"
                OpName %color "color"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %textureLoad_1bfdfb "textureLoad_1bfdfb"
                OpName %res "res"
                OpName %vertex_main_inner "vertex_main_inner"
@@ -65,14 +54,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -81,30 +70,18 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
-               OpDecorate %ext_tex_params NonWritable
-               OpDecorate %ext_tex_params DescriptorSet 1
-               OpDecorate %ext_tex_params Binding 2
-               OpDecorate %arg_0 DescriptorSet 1
-               OpDecorate %arg_0 Binding 0
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %ExternalTextureParams 4 Offset 96
                OpMemberDecorate %ExternalTextureParams 5 Offset 128
                OpMemberDecorate %ExternalTextureParams 5 ColMajor
                OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
                OpMemberDecorate %ExternalTextureParams 6 Offset 176
                OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
+               OpDecorate %ext_tex_params NonWritable
+               OpDecorate %ext_tex_params DescriptorSet 1
+               OpDecorate %ext_tex_params Binding 2
+               OpDecorate %arg_0 DescriptorSet 1
+               OpDecorate %arg_0 Binding 0
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -121,11 +98,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %23 = OpTypeFunction %v3float %v3float %GammaTransferParams
        %bool = OpTypeBool
@@ -133,22 +110,20 @@
 %_ptr_Function_v3float = OpTypePointer Function %v3float
          %43 = OpConstantNull %v3float
      %v2uint = OpTypeVector %uint 2
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
          %63 = OpTypeFunction %v4float %11 %11 %v2uint %ExternalTextureParams
      %uint_1 = OpConstant %uint 1
         %int = OpTypeInt 32 1
-         %82 = OpConstantNull %int
+         %80 = OpConstantNull %int
+    %v2float = OpTypeVector %float 2
     %float_1 = OpConstant %float 1
-         %95 = OpConstantNull %uint
-        %113 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+         %94 = OpConstantNull %uint
        %void = OpTypeVoid
-        %127 = OpTypeFunction %void
-        %134 = OpConstantComposite %v2uint %uint_1 %uint_1
+        %112 = OpTypeFunction %void
+        %119 = OpConstantComposite %v2uint %uint_1 %uint_1
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %142 = OpTypeFunction %v4float
+        %126 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %23
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -190,102 +165,86 @@
      %plane1 = OpFunctionParameter %11
       %coord = OpFunctionParameter %v2uint
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %72 = OpLabel
+         %70 = OpLabel
       %color = OpVariable %_ptr_Function_v3float Function %43
-         %74 = OpCompositeExtract %uint %params_0 0
-         %76 = OpIEqual %bool %74 %uint_1
-               OpSelectionMerge %77 None
-               OpBranchConditional %76 %78 %79
-         %78 = OpLabel
-         %80 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %83 = OpVectorShuffle %v3float %80 %80 0 1 2
-               OpStore %color %83
-               OpBranch %77
-         %79 = OpLabel
-         %84 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %85 = OpCompositeExtract %float %84 0
-         %86 = OpImageFetch %v4float %plane1 %coord Lod %82
-         %87 = OpVectorShuffle %v2float %86 %86 0 1
-         %88 = OpCompositeExtract %float %87 0
-         %89 = OpCompositeExtract %float %87 1
-         %91 = OpCompositeConstruct %v4float %85 %88 %89 %float_1
-         %92 = OpCompositeExtract %mat3v4float %params_0 2
-         %93 = OpVectorTimesMatrix %v3float %91 %92
-               OpStore %color %93
-               OpBranch %77
+         %72 = OpCompositeExtract %uint %params_0 0
+         %74 = OpIEqual %bool %72 %uint_1
+               OpSelectionMerge %75 None
+               OpBranchConditional %74 %76 %77
+         %76 = OpLabel
+         %78 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %81 = OpVectorShuffle %v3float %78 %78 0 1 2
+               OpStore %color %81
+               OpBranch %75
          %77 = OpLabel
-         %94 = OpCompositeExtract %uint %params_0 1
-         %96 = OpIEqual %bool %94 %95
-               OpSelectionMerge %97 None
-               OpBranchConditional %96 %98 %97
-         %98 = OpLabel
-        %100 = OpLoad %v3float %color
-        %101 = OpCompositeExtract %GammaTransferParams %params_0 3
-         %99 = OpFunctionCall %v3float %gammaCorrection %100 %101
-               OpStore %color %99
-        %102 = OpCompositeExtract %mat3v3float %params_0 5
-        %103 = OpLoad %v3float %color
-        %104 = OpMatrixTimesVector %v3float %102 %103
-               OpStore %color %104
-        %106 = OpLoad %v3float %color
-        %107 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %105 = OpFunctionCall %v3float %gammaCorrection %106 %107
-               OpStore %color %105
-               OpBranch %97
+         %82 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %83 = OpCompositeExtract %float %82 0
+         %84 = OpImageFetch %v4float %plane1 %coord Lod %80
+         %86 = OpVectorShuffle %v2float %84 %84 0 1
+         %87 = OpCompositeExtract %float %86 0
+         %88 = OpCompositeExtract %float %86 1
+         %90 = OpCompositeConstruct %v4float %83 %87 %88 %float_1
+         %91 = OpCompositeExtract %mat3v4float %params_0 2
+         %92 = OpVectorTimesMatrix %v3float %90 %91
+               OpStore %color %92
+               OpBranch %75
+         %75 = OpLabel
+         %93 = OpCompositeExtract %uint %params_0 1
+         %95 = OpIEqual %bool %93 %94
+               OpSelectionMerge %96 None
+               OpBranchConditional %95 %97 %96
          %97 = OpLabel
-        %108 = OpLoad %v3float %color
-        %109 = OpCompositeExtract %float %108 0
-        %110 = OpCompositeExtract %float %108 1
-        %111 = OpCompositeExtract %float %108 2
-        %112 = OpCompositeConstruct %v4float %109 %110 %111 %float_1
-               OpReturnValue %112
+         %99 = OpLoad %v3float %color
+        %100 = OpCompositeExtract %GammaTransferParams %params_0 3
+         %98 = OpFunctionCall %v3float %gammaCorrection %99 %100
+               OpStore %color %98
+        %101 = OpCompositeExtract %mat3v3float %params_0 5
+        %102 = OpLoad %v3float %color
+        %103 = OpMatrixTimesVector %v3float %101 %102
+               OpStore %color %103
+        %105 = OpLoad %v3float %color
+        %106 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %104 = OpFunctionCall %v3float %gammaCorrection %105 %106
+               OpStore %color %104
+               OpBranch %96
+         %96 = OpLabel
+        %107 = OpLoad %v3float %color
+        %108 = OpCompositeExtract %float %107 0
+        %109 = OpCompositeExtract %float %107 1
+        %110 = OpCompositeExtract %float %107 2
+        %111 = OpCompositeConstruct %v4float %108 %109 %110 %float_1
+               OpReturnValue %111
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %113
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %116 = OpLabel
-        %117 = OpCompositeExtract %uint %val 0
-        %118 = OpCompositeExtract %uint %val 1
-        %119 = OpCompositeExtract %mat3v4float %val 2
-        %120 = OpCompositeExtract %GammaTransferParams %val 3
-        %121 = OpCompositeExtract %GammaTransferParams %val 4
-        %122 = OpCompositeExtract %mat3v3float %val 5
-        %123 = OpCompositeExtract %v2float %val 6
-        %124 = OpCompositeExtract %v2float %val 7
-        %125 = OpCompositeConstruct %mat2v2float %123 %124
-        %126 = OpCompositeConstruct %ExternalTextureParams %117 %118 %119 %120 %121 %122 %125
-               OpReturnValue %126
-               OpFunctionEnd
-%textureLoad_1bfdfb = OpFunction %void None %127
-        %130 = OpLabel
+%textureLoad_1bfdfb = OpFunction %void None %112
+        %115 = OpLabel
         %res = OpVariable %_ptr_Function_v4float Function %5
-        %132 = OpLoad %11 %arg_0
-        %133 = OpLoad %11 %ext_tex_plane_1
-        %138 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %139 = OpLoad %ExternalTextureParams_std140 %138
-        %135 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %139
-        %131 = OpFunctionCall %v4float %textureLoadExternal %132 %133 %134 %135
-               OpStore %res %131
+        %117 = OpLoad %11 %arg_0
+        %118 = OpLoad %11 %ext_tex_plane_1
+        %122 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %123 = OpLoad %ExternalTextureParams %122
+        %116 = OpFunctionCall %v4float %textureLoadExternal %117 %118 %119 %123
+               OpStore %res %116
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %142
-        %144 = OpLabel
-        %145 = OpFunctionCall %void %textureLoad_1bfdfb
+%vertex_main_inner = OpFunction %v4float None %126
+        %128 = OpLabel
+        %129 = OpFunctionCall %void %textureLoad_1bfdfb
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %127
-        %147 = OpLabel
-        %148 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %148
+%vertex_main = OpFunction %void None %112
+        %131 = OpLabel
+        %132 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %132
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %127
-        %150 = OpLabel
-        %151 = OpFunctionCall %void %textureLoad_1bfdfb
+%fragment_main = OpFunction %void None %112
+        %134 = OpLabel
+        %135 = OpFunctionCall %void %textureLoad_1bfdfb
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %127
-        %153 = OpLabel
-        %154 = OpFunctionCall %void %textureLoad_1bfdfb
+%compute_main = OpFunction %void None %112
+        %137 = OpLabel
+        %138 = OpFunctionCall %void %textureLoad_1bfdfb
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/literal/textureLoad/8acf41.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, i
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_8acf41() {

test/tint/builtins/gen/literal/textureLoad/8acf41.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, i
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_8acf41() {

test/tint/builtins/gen/literal/textureLoad/8acf41.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -60,12 +49,8 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, ive
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_8acf41() {
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, ivec2(1), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, ivec2(1), ext_tex_params.inner);
 }
 
 vec4 vertex_main() {
@@ -102,22 +87,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -144,12 +118,8 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, ive
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_8acf41() {
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, ivec2(1), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, ivec2(1), ext_tex_params.inner);
 }
 
 void fragment_main() {
@@ -180,22 +150,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -222,12 +181,8 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, ive
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_8acf41() {
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, ivec2(1), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, ivec2(1), ext_tex_params.inner);
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/textureLoad/8acf41.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {

test/tint/builtins/gen/literal/textureLoad/8acf41.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 156
+; Bound: 140
 ; Schema: 0
                OpCapability Shader
          %29 = OpExtInstImport "GLSL.std.450"
@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,31 +30,20 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureLoadExternal "textureLoadExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
                OpName %coord "coord"
                OpName %params_0 "params"
                OpName %color "color"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %textureLoad_8acf41 "textureLoad_8acf41"
                OpName %res "res"
                OpName %vertex_main_inner "vertex_main_inner"
@@ -65,14 +54,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -81,30 +70,18 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
-               OpDecorate %ext_tex_params NonWritable
-               OpDecorate %ext_tex_params DescriptorSet 1
-               OpDecorate %ext_tex_params Binding 2
-               OpDecorate %arg_0 DescriptorSet 1
-               OpDecorate %arg_0 Binding 0
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %ExternalTextureParams 4 Offset 96
                OpMemberDecorate %ExternalTextureParams 5 Offset 128
                OpMemberDecorate %ExternalTextureParams 5 ColMajor
                OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
                OpMemberDecorate %ExternalTextureParams 6 Offset 176
                OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
+               OpDecorate %ext_tex_params NonWritable
+               OpDecorate %ext_tex_params DescriptorSet 1
+               OpDecorate %ext_tex_params Binding 2
+               OpDecorate %arg_0 DescriptorSet 1
+               OpDecorate %arg_0 Binding 0
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -121,11 +98,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %23 = OpTypeFunction %v3float %v3float %GammaTransferParams
        %bool = OpTypeBool
@@ -134,22 +111,20 @@
          %43 = OpConstantNull %v3float
         %int = OpTypeInt 32 1
       %v2int = OpTypeVector %int 2
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
          %63 = OpTypeFunction %v4float %11 %11 %v2int %ExternalTextureParams
      %uint_1 = OpConstant %uint 1
-         %82 = OpConstantNull %int
+         %80 = OpConstantNull %int
+    %v2float = OpTypeVector %float 2
     %float_1 = OpConstant %float 1
-         %95 = OpConstantNull %uint
-        %113 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+         %94 = OpConstantNull %uint
        %void = OpTypeVoid
-        %127 = OpTypeFunction %void
+        %112 = OpTypeFunction %void
       %int_1 = OpConstant %int 1
-        %135 = OpConstantComposite %v2int %int_1 %int_1
+        %120 = OpConstantComposite %v2int %int_1 %int_1
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %143 = OpTypeFunction %v4float
+        %127 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %23
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -191,102 +166,86 @@
      %plane1 = OpFunctionParameter %11
       %coord = OpFunctionParameter %v2int
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %73 = OpLabel
+         %71 = OpLabel
       %color = OpVariable %_ptr_Function_v3float Function %43
-         %75 = OpCompositeExtract %uint %params_0 0
-         %77 = OpIEqual %bool %75 %uint_1
-               OpSelectionMerge %78 None
-               OpBranchConditional %77 %79 %80
-         %79 = OpLabel
-         %81 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %83 = OpVectorShuffle %v3float %81 %81 0 1 2
-               OpStore %color %83
-               OpBranch %78
-         %80 = OpLabel
-         %84 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %85 = OpCompositeExtract %float %84 0
-         %86 = OpImageFetch %v4float %plane1 %coord Lod %82
-         %87 = OpVectorShuffle %v2float %86 %86 0 1
-         %88 = OpCompositeExtract %float %87 0
-         %89 = OpCompositeExtract %float %87 1
-         %91 = OpCompositeConstruct %v4float %85 %88 %89 %float_1
-         %92 = OpCompositeExtract %mat3v4float %params_0 2
-         %93 = OpVectorTimesMatrix %v3float %91 %92
-               OpStore %color %93
-               OpBranch %78
+         %73 = OpCompositeExtract %uint %params_0 0
+         %75 = OpIEqual %bool %73 %uint_1
+               OpSelectionMerge %76 None
+               OpBranchConditional %75 %77 %78
+         %77 = OpLabel
+         %79 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %81 = OpVectorShuffle %v3float %79 %79 0 1 2
+               OpStore %color %81
+               OpBranch %76
          %78 = OpLabel
-         %94 = OpCompositeExtract %uint %params_0 1
-         %96 = OpIEqual %bool %94 %95
-               OpSelectionMerge %97 None
-               OpBranchConditional %96 %98 %97
-         %98 = OpLabel
-        %100 = OpLoad %v3float %color
-        %101 = OpCompositeExtract %GammaTransferParams %params_0 3
-         %99 = OpFunctionCall %v3float %gammaCorrection %100 %101
-               OpStore %color %99
-        %102 = OpCompositeExtract %mat3v3float %params_0 5
-        %103 = OpLoad %v3float %color
-        %104 = OpMatrixTimesVector %v3float %102 %103
-               OpStore %color %104
-        %106 = OpLoad %v3float %color
-        %107 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %105 = OpFunctionCall %v3float %gammaCorrection %106 %107
-               OpStore %color %105
-               OpBranch %97
+         %82 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %83 = OpCompositeExtract %float %82 0
+         %84 = OpImageFetch %v4float %plane1 %coord Lod %80
+         %86 = OpVectorShuffle %v2float %84 %84 0 1
+         %87 = OpCompositeExtract %float %86 0
+         %88 = OpCompositeExtract %float %86 1
+         %90 = OpCompositeConstruct %v4float %83 %87 %88 %float_1
+         %91 = OpCompositeExtract %mat3v4float %params_0 2
+         %92 = OpVectorTimesMatrix %v3float %90 %91
+               OpStore %color %92
+               OpBranch %76
+         %76 = OpLabel
+         %93 = OpCompositeExtract %uint %params_0 1
+         %95 = OpIEqual %bool %93 %94
+               OpSelectionMerge %96 None
+               OpBranchConditional %95 %97 %96
          %97 = OpLabel
-        %108 = OpLoad %v3float %color
-        %109 = OpCompositeExtract %float %108 0
-        %110 = OpCompositeExtract %float %108 1
-        %111 = OpCompositeExtract %float %108 2
-        %112 = OpCompositeConstruct %v4float %109 %110 %111 %float_1
-               OpReturnValue %112
+         %99 = OpLoad %v3float %color
+        %100 = OpCompositeExtract %GammaTransferParams %params_0 3
+         %98 = OpFunctionCall %v3float %gammaCorrection %99 %100
+               OpStore %color %98
+        %101 = OpCompositeExtract %mat3v3float %params_0 5
+        %102 = OpLoad %v3float %color
+        %103 = OpMatrixTimesVector %v3float %101 %102
+               OpStore %color %103
+        %105 = OpLoad %v3float %color
+        %106 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %104 = OpFunctionCall %v3float %gammaCorrection %105 %106
+               OpStore %color %104
+               OpBranch %96
+         %96 = OpLabel
+        %107 = OpLoad %v3float %color
+        %108 = OpCompositeExtract %float %107 0
+        %109 = OpCompositeExtract %float %107 1
+        %110 = OpCompositeExtract %float %107 2
+        %111 = OpCompositeConstruct %v4float %108 %109 %110 %float_1
+               OpReturnValue %111
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %113
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %116 = OpLabel
-        %117 = OpCompositeExtract %uint %val 0
-        %118 = OpCompositeExtract %uint %val 1
-        %119 = OpCompositeExtract %mat3v4float %val 2
-        %120 = OpCompositeExtract %GammaTransferParams %val 3
-        %121 = OpCompositeExtract %GammaTransferParams %val 4
-        %122 = OpCompositeExtract %mat3v3float %val 5
-        %123 = OpCompositeExtract %v2float %val 6
-        %124 = OpCompositeExtract %v2float %val 7
-        %125 = OpCompositeConstruct %mat2v2float %123 %124
-        %126 = OpCompositeConstruct %ExternalTextureParams %117 %118 %119 %120 %121 %122 %125
-               OpReturnValue %126
-               OpFunctionEnd
-%textureLoad_8acf41 = OpFunction %void None %127
-        %130 = OpLabel
+%textureLoad_8acf41 = OpFunction %void None %112
+        %115 = OpLabel
         %res = OpVariable %_ptr_Function_v4float Function %5
-        %132 = OpLoad %11 %arg_0
-        %133 = OpLoad %11 %ext_tex_plane_1
-        %139 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %140 = OpLoad %ExternalTextureParams_std140 %139
-        %136 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %140
-        %131 = OpFunctionCall %v4float %textureLoadExternal %132 %133 %135 %136
-               OpStore %res %131
+        %117 = OpLoad %11 %arg_0
+        %118 = OpLoad %11 %ext_tex_plane_1
+        %123 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %124 = OpLoad %ExternalTextureParams %123
+        %116 = OpFunctionCall %v4float %textureLoadExternal %117 %118 %120 %124
+               OpStore %res %116
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %143
-        %145 = OpLabel
-        %146 = OpFunctionCall %void %textureLoad_8acf41
+%vertex_main_inner = OpFunction %v4float None %127
+        %129 = OpLabel
+        %130 = OpFunctionCall %void %textureLoad_8acf41
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %127
-        %148 = OpLabel
-        %149 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %149
+%vertex_main = OpFunction %void None %112
+        %132 = OpLabel
+        %133 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %133
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %127
-        %151 = OpLabel
-        %152 = OpFunctionCall %void %textureLoad_8acf41
+%fragment_main = OpFunction %void None %112
+        %135 = OpLabel
+        %136 = OpFunctionCall %void %textureLoad_8acf41
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %127
-        %154 = OpLabel
-        %155 = OpFunctionCall %void %textureLoad_8acf41
+%compute_main = OpFunction %void None %112
+        %138 = OpLabel
+        %139 = OpFunctionCall %void %textureLoad_8acf41
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/literal/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t2, space1);
 cbuffer cbuffer_ext_tex_params : register(b3, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 SamplerState arg_1 : register(s1, space1);
@@ -33,7 +33,7 @@ float3 gammaCorrection(float3 v, GammaTransferParams params) {
 }
 
 float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, SamplerState smp, float2 coord, ExternalTextureParams params) {
-  const float2 modifiedCoords = (mul(params.rotationMatrix, (coord - 0.5f)) + 0.5f);
+  const float2 modifiedCoords = mul(params.coordTransformationMatrix, float3((coord - 0.5f), 1.0f));
   int3 tint_tmp;
   plane0.GetDimensions(0, tint_tmp.x, tint_tmp.y, tint_tmp.z);
   const float2 plane0_dims = float2(tint_tmp.xy);
@@ -58,14 +58,14 @@ float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1,
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -74,30 +74,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureSampleBaseClampToEdge_7c04e6() {

test/tint/builtins/gen/literal/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t2, space1);
 cbuffer cbuffer_ext_tex_params : register(b3, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 SamplerState arg_1 : register(s1, space1);
@@ -33,7 +33,7 @@ float3 gammaCorrection(float3 v, GammaTransferParams params) {
 }
 
 float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, SamplerState smp, float2 coord, ExternalTextureParams params) {
-  const float2 modifiedCoords = (mul(params.rotationMatrix, (coord - 0.5f)) + 0.5f);
+  const float2 modifiedCoords = mul(params.coordTransformationMatrix, float3((coord - 0.5f), 1.0f));
   int3 tint_tmp;
   plane0.GetDimensions(0, tint_tmp.x, tint_tmp.y, tint_tmp.z);
   const float2 plane0_dims = float2(tint_tmp.xy);
@@ -58,14 +58,14 @@ float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1,
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -74,30 +74,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureSampleBaseClampToEdge_7c04e6() {

test/tint/builtins/gen/literal/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 3, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 3, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -45,7 +34,7 @@ vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
 
 
 vec4 textureSampleExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, highp sampler2D plane0_smp, highp sampler2D plane1_smp, vec2 coord, ExternalTextureParams params) {
-  vec2 modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  vec2 modifiedCoords = (vec3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   vec2 plane0_dims = vec2(uvec2(textureSize(plane0_1, 0)));
   vec2 plane0_half_texel = (vec2(0.5f) / plane0_dims);
   vec2 plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));
@@ -70,12 +59,8 @@ uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
 uniform highp sampler2D arg_0_arg_1;
 uniform highp sampler2D ext_tex_plane_1_arg_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureSampleBaseClampToEdge_7c04e6() {
-  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, vec2(1.0f), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, vec2(1.0f), ext_tex_params.inner);
 }
 
 vec4 vertex_main() {
@@ -112,22 +97,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 3, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 3, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -139,7 +113,7 @@ vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
 
 
 vec4 textureSampleExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, highp sampler2D plane0_smp, highp sampler2D plane1_smp, vec2 coord, ExternalTextureParams params) {
-  vec2 modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  vec2 modifiedCoords = (vec3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   vec2 plane0_dims = vec2(uvec2(textureSize(plane0_1, 0)));
   vec2 plane0_half_texel = (vec2(0.5f) / plane0_dims);
   vec2 plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));
@@ -164,12 +138,8 @@ uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
 uniform highp sampler2D arg_0_arg_1;
 uniform highp sampler2D ext_tex_plane_1_arg_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureSampleBaseClampToEdge_7c04e6() {
-  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, vec2(1.0f), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, vec2(1.0f), ext_tex_params.inner);
 }
 
 void fragment_main() {
@@ -200,22 +170,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 3, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 3, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -227,7 +186,7 @@ vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
 
 
 vec4 textureSampleExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, highp sampler2D plane0_smp, highp sampler2D plane1_smp, vec2 coord, ExternalTextureParams params) {
-  vec2 modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  vec2 modifiedCoords = (vec3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   vec2 plane0_dims = vec2(uvec2(textureSize(plane0_1, 0)));
   vec2 plane0_half_texel = (vec2(0.5f) / plane0_dims);
   vec2 plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));
@@ -252,12 +211,8 @@ uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
 uniform highp sampler2D arg_0_arg_1;
 uniform highp sampler2D ext_tex_plane_1_arg_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureSampleBaseClampToEdge_7c04e6() {
-  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, vec2(1.0f), conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, vec2(1.0f), ext_tex_params.inner);
 }
 
 void compute_main() {

test/tint/builtins/gen/literal/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {
@@ -44,7 +44,7 @@ float3 gammaCorrection(float3 v, GammaTransferParams params) {
 }
 
 float4 textureSampleExternal(texture2d<float, access::sample> plane0, texture2d<float, access::sample> plane1, sampler smp, float2 coord, ExternalTextureParams params) {
-  float2 const modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  float2 const modifiedCoords = (float3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   float2 const plane0_dims = float2(uint2(plane0.get_width(0), plane0.get_height(0)));
   float2 const plane0_half_texel = (float2(0.5f) / plane0_dims);
   float2 const plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));

test/tint/builtins/gen/literal/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 190
+; Bound: 174
 ; Schema: 0
                OpCapability Shader
                OpCapability ImageQuery
@@ -15,13 +15,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -31,24 +31,15 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %arg_1 "arg_1"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureSampleExternal "textureSampleExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
@@ -56,8 +47,6 @@
                OpName %coord "coord"
                OpName %params_0 "params"
                OpName %color "color"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %textureSampleBaseClampToEdge_7c04e6 "textureSampleBaseClampToEdge_7c04e6"
                OpName %res "res"
                OpName %vertex_main_inner "vertex_main_inner"
@@ -68,14 +57,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 2
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -84,12 +73,13 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
+               OpMemberDecorate %ExternalTextureParams 4 Offset 96
+               OpMemberDecorate %ExternalTextureParams 5 Offset 128
+               OpMemberDecorate %ExternalTextureParams 5 ColMajor
+               OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 6 Offset 176
+               OpMemberDecorate %ExternalTextureParams 6 ColMajor
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
                OpDecorate %ext_tex_params NonWritable
                OpDecorate %ext_tex_params DescriptorSet 1
                OpDecorate %ext_tex_params Binding 3
@@ -97,19 +87,6 @@
                OpDecorate %arg_0 Binding 0
                OpDecorate %arg_1 DescriptorSet 1
                OpDecorate %arg_1 Binding 1
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
-               OpMemberDecorate %ExternalTextureParams 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -126,11 +103,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %25 = OpTypeSampler
 %_ptr_UniformConstant_25 = OpTypePointer UniformConstant %25
@@ -140,28 +117,26 @@
      %v3bool = OpTypeVector %bool 3
 %_ptr_Function_v3float = OpTypePointer Function %v3float
          %46 = OpConstantNull %v3float
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
+    %v2float = OpTypeVector %float 2
          %66 = OpTypeFunction %v4float %11 %11 %25 %v2float %ExternalTextureParams
   %float_0_5 = OpConstant %float 0.5
 %_ptr_Function_v2float = OpTypePointer Function %v2float
-         %80 = OpConstantNull %v2float
+         %79 = OpConstantNull %v2float
+    %float_1 = OpConstant %float 1
      %v2uint = OpTypeVector %uint 2
         %int = OpTypeInt 32 1
          %91 = OpConstantNull %int
          %92 = OpConstantComposite %v2float %float_0_5 %float_0_5
-    %float_1 = OpConstant %float 1
      %uint_1 = OpConstant %uint 1
-        %114 = OpTypeSampledImage %11
-        %129 = OpConstantNull %uint
-        %147 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+        %113 = OpTypeSampledImage %11
+        %128 = OpConstantNull %uint
        %void = OpTypeVoid
-        %161 = OpTypeFunction %void
-        %169 = OpConstantComposite %v2float %float_1 %float_1
+        %146 = OpTypeFunction %void
+        %154 = OpConstantComposite %v2float %float_1 %float_1
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %177 = OpTypeFunction %v4float
+        %161 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %26
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -204,128 +179,112 @@
         %smp = OpFunctionParameter %25
       %coord = OpFunctionParameter %v2float
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %75 = OpLabel
-         %78 = OpVariable %_ptr_Function_v2float Function %80
-         %85 = OpVariable %_ptr_Function_v2float Function %80
-         %97 = OpVariable %_ptr_Function_v2float Function %80
-        %104 = OpVariable %_ptr_Function_v2float Function %80
+         %74 = OpLabel
+         %77 = OpVariable %_ptr_Function_v2float Function %79
+         %96 = OpVariable %_ptr_Function_v2float Function %79
+        %103 = OpVariable %_ptr_Function_v2float Function %79
       %color = OpVariable %_ptr_Function_v3float Function %46
-         %81 = OpCompositeConstruct %v2float %float_0_5 %float_0_5
-         %77 = OpFSub %v2float %coord %81
-         %82 = OpCompositeExtract %mat2v2float %params_0 6
-         %83 = OpVectorTimesMatrix %v2float %77 %82
-         %86 = OpCompositeConstruct %v2float %float_0_5 %float_0_5
-         %84 = OpFAdd %v2float %83 %86
+         %80 = OpCompositeConstruct %v2float %float_0_5 %float_0_5
+         %76 = OpFSub %v2float %coord %80
+         %81 = OpCompositeExtract %float %76 0
+         %82 = OpCompositeExtract %float %76 1
+         %84 = OpCompositeConstruct %v3float %81 %82 %float_1
+         %85 = OpCompositeExtract %mat2v3float %params_0 6
+         %86 = OpVectorTimesMatrix %v2float %84 %85
          %88 = OpImageQuerySizeLod %v2uint %plane0 %91
          %87 = OpConvertUToF %v2float %88
          %93 = OpFDiv %v2float %92 %87
-         %98 = OpCompositeConstruct %v2float %float_1 %float_1
-         %96 = OpFSub %v2float %98 %93
-         %94 = OpExtInst %v2float %32 NClamp %84 %93 %96
-        %100 = OpImageQuerySizeLod %v2uint %plane1 %91
-         %99 = OpConvertUToF %v2float %100
-        %101 = OpFDiv %v2float %92 %99
-        %105 = OpCompositeConstruct %v2float %float_1 %float_1
-        %103 = OpFSub %v2float %105 %101
-        %102 = OpExtInst %v2float %32 NClamp %84 %101 %103
-        %107 = OpCompositeExtract %uint %params_0 0
-        %109 = OpIEqual %bool %107 %uint_1
-               OpSelectionMerge %110 None
-               OpBranchConditional %109 %111 %112
-        %111 = OpLabel
-        %115 = OpSampledImage %114 %plane0 %smp
-        %113 = OpImageSampleExplicitLod %v4float %115 %94 Lod %8
-        %116 = OpVectorShuffle %v3float %113 %113 0 1 2
-               OpStore %color %116
-               OpBranch %110
-        %112 = OpLabel
-        %118 = OpSampledImage %114 %plane0 %smp
-        %117 = OpImageSampleExplicitLod %v4float %118 %94 Lod %8
-        %119 = OpCompositeExtract %float %117 0
-        %121 = OpSampledImage %114 %plane1 %smp
-        %120 = OpImageSampleExplicitLod %v4float %121 %102 Lod %8
-        %122 = OpVectorShuffle %v2float %120 %120 0 1
-        %123 = OpCompositeExtract %float %122 0
-        %124 = OpCompositeExtract %float %122 1
-        %125 = OpCompositeConstruct %v4float %119 %123 %124 %float_1
-        %126 = OpCompositeExtract %mat3v4float %params_0 2
-        %127 = OpVectorTimesMatrix %v3float %125 %126
-               OpStore %color %127
-               OpBranch %110
+         %97 = OpCompositeConstruct %v2float %float_1 %float_1
+         %95 = OpFSub %v2float %97 %93
+         %94 = OpExtInst %v2float %32 NClamp %86 %93 %95
+         %99 = OpImageQuerySizeLod %v2uint %plane1 %91
+         %98 = OpConvertUToF %v2float %99
+        %100 = OpFDiv %v2float %92 %98
+        %104 = OpCompositeConstruct %v2float %float_1 %float_1
+        %102 = OpFSub %v2float %104 %100
+        %101 = OpExtInst %v2float %32 NClamp %86 %100 %102
+        %106 = OpCompositeExtract %uint %params_0 0
+        %108 = OpIEqual %bool %106 %uint_1
+               OpSelectionMerge %109 None
+               OpBranchConditional %108 %110 %111
         %110 = OpLabel
-        %128 = OpCompositeExtract %uint %params_0 1
-        %130 = OpIEqual %bool %128 %129
-               OpSelectionMerge %131 None
-               OpBranchConditional %130 %132 %131
-        %132 = OpLabel
-        %134 = OpLoad %v3float %color
-        %135 = OpCompositeExtract %GammaTransferParams %params_0 3
-        %133 = OpFunctionCall %v3float %gammaCorrection %134 %135
-               OpStore %color %133
-        %136 = OpCompositeExtract %mat3v3float %params_0 5
-        %137 = OpLoad %v3float %color
-        %138 = OpMatrixTimesVector %v3float %136 %137
-               OpStore %color %138
-        %140 = OpLoad %v3float %color
-        %141 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %139 = OpFunctionCall %v3float %gammaCorrection %140 %141
-               OpStore %color %139
-               OpBranch %131
+        %114 = OpSampledImage %113 %plane0 %smp
+        %112 = OpImageSampleExplicitLod %v4float %114 %94 Lod %8
+        %115 = OpVectorShuffle %v3float %112 %112 0 1 2
+               OpStore %color %115
+               OpBranch %109
+        %111 = OpLabel
+        %117 = OpSampledImage %113 %plane0 %smp
+        %116 = OpImageSampleExplicitLod %v4float %117 %94 Lod %8
+        %118 = OpCompositeExtract %float %116 0
+        %120 = OpSampledImage %113 %plane1 %smp
+        %119 = OpImageSampleExplicitLod %v4float %120 %101 Lod %8
+        %121 = OpVectorShuffle %v2float %119 %119 0 1
+        %122 = OpCompositeExtract %float %121 0
+        %123 = OpCompositeExtract %float %121 1
+        %124 = OpCompositeConstruct %v4float %118 %122 %123 %float_1
+        %125 = OpCompositeExtract %mat3v4float %params_0 2
+        %126 = OpVectorTimesMatrix %v3float %124 %125
+               OpStore %color %126
+               OpBranch %109
+        %109 = OpLabel
+        %127 = OpCompositeExtract %uint %params_0 1
+        %129 = OpIEqual %bool %127 %128
+               OpSelectionMerge %130 None
+               OpBranchConditional %129 %131 %130
         %131 = OpLabel
-        %142 = OpLoad %v3float %color
-        %143 = OpCompositeExtract %float %142 0
-        %144 = OpCompositeExtract %float %142 1
-        %145 = OpCompositeExtract %float %142 2
-        %146 = OpCompositeConstruct %v4float %143 %144 %145 %float_1
-               OpReturnValue %146
+        %133 = OpLoad %v3float %color
+        %134 = OpCompositeExtract %GammaTransferParams %params_0 3
+        %132 = OpFunctionCall %v3float %gammaCorrection %133 %134
+               OpStore %color %132
+        %135 = OpCompositeExtract %mat3v3float %params_0 5
+        %136 = OpLoad %v3float %color
+        %137 = OpMatrixTimesVector %v3float %135 %136
+               OpStore %color %137
+        %139 = OpLoad %v3float %color
+        %140 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %138 = OpFunctionCall %v3float %gammaCorrection %139 %140
+               OpStore %color %138
+               OpBranch %130
+        %130 = OpLabel
+        %141 = OpLoad %v3float %color
+        %142 = OpCompositeExtract %float %141 0
+        %143 = OpCompositeExtract %float %141 1
+        %144 = OpCompositeExtract %float %141 2
+        %145 = OpCompositeConstruct %v4float %142 %143 %144 %float_1
+               OpReturnValue %145
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %147
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %150 = OpLabel
-        %151 = OpCompositeExtract %uint %val 0
-        %152 = OpCompositeExtract %uint %val 1
-        %153 = OpCompositeExtract %mat3v4float %val 2
-        %154 = OpCompositeExtract %GammaTransferParams %val 3
-        %155 = OpCompositeExtract %GammaTransferParams %val 4
-        %156 = OpCompositeExtract %mat3v3float %val 5
-        %157 = OpCompositeExtract %v2float %val 6
-        %158 = OpCompositeExtract %v2float %val 7
-        %159 = OpCompositeConstruct %mat2v2float %157 %158
-        %160 = OpCompositeConstruct %ExternalTextureParams %151 %152 %153 %154 %155 %156 %159
-               OpReturnValue %160
-               OpFunctionEnd
-%textureSampleBaseClampToEdge_7c04e6 = OpFunction %void None %161
-        %164 = OpLabel
+%textureSampleBaseClampToEdge_7c04e6 = OpFunction %void None %146
+        %149 = OpLabel
         %res = OpVariable %_ptr_Function_v4float Function %5
-        %166 = OpLoad %11 %arg_0
-        %167 = OpLoad %11 %ext_tex_plane_1
-        %168 = OpLoad %25 %arg_1
-        %173 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %174 = OpLoad %ExternalTextureParams_std140 %173
-        %170 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %174
-        %165 = OpFunctionCall %v4float %textureSampleExternal %166 %167 %168 %169 %170
-               OpStore %res %165
+        %151 = OpLoad %11 %arg_0
+        %152 = OpLoad %11 %ext_tex_plane_1
+        %153 = OpLoad %25 %arg_1
+        %157 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %158 = OpLoad %ExternalTextureParams %157
+        %150 = OpFunctionCall %v4float %textureSampleExternal %151 %152 %153 %154 %158
+               OpStore %res %150
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %177
-        %179 = OpLabel
-        %180 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
+%vertex_main_inner = OpFunction %v4float None %161
+        %163 = OpLabel
+        %164 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %161
-        %182 = OpLabel
-        %183 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %183
+%vertex_main = OpFunction %void None %146
+        %166 = OpLabel
+        %167 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %167
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %161
-        %185 = OpLabel
-        %186 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
+%fragment_main = OpFunction %void None %146
+        %169 = OpLabel
+        %170 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %161
-        %188 = OpLabel
-        %189 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
+%compute_main = OpFunction %void None %146
+        %172 = OpLabel
+        %173 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/var/mix/275cac.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_275cac() {
+  float4 res = (1.0f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_275cac();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_275cac();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_275cac();
+  return;
+}

test/tint/builtins/gen/var/mix/275cac.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_275cac() {
+  float4 res = (1.0f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_275cac();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_275cac();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_275cac();
+  return;
+}

test/tint/builtins/gen/var/mix/275cac.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_275cac() {
+  vec4 res = vec4(1.0f);
+}
+
+vec4 vertex_main() {
+  mix_275cac();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_275cac() {
+  vec4 res = vec4(1.0f);
+}
+
+void fragment_main() {
+  mix_275cac();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_275cac() {
+  vec4 res = vec4(1.0f);
+}
+
+void compute_main() {
+  mix_275cac();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/275cac.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_275cac() {
+  float4 res = float4(1.0f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_275cac();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_275cac();
+  return;
+}
+
+kernel void compute_main() {
+  mix_275cac();
+  return;
+}
+

test/tint/builtins/gen/var/mix/275cac.wgsl.expected.spvasm

@@ -0,0 +1,64 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 30
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_275cac "mix_275cac"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %float_1 = OpConstant %float 1
+         %14 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %17 = OpTypeFunction %v4float
+ %mix_275cac = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v4float Function %5
+               OpStore %res %14
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %mix_275cac
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %mix_275cac
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %mix_275cac
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/275cac.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_275cac() {
+  const arg_0 = vec4(1.0);
+  const arg_1 = vec4(1.0);
+  const arg_2 = 1.0;
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_275cac();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_275cac();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_275cac();
+}

test/tint/builtins/gen/var/mix/30de36.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_30de36() {
+  float res = 1.0f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_30de36();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_30de36();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_30de36();
+  return;
+}

test/tint/builtins/gen/var/mix/30de36.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_30de36() {
+  float res = 1.0f;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_30de36();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_30de36();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_30de36();
+  return;
+}

test/tint/builtins/gen/var/mix/30de36.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_30de36() {
+  float res = 1.0f;
+}
+
+vec4 vertex_main() {
+  mix_30de36();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_30de36() {
+  float res = 1.0f;
+}
+
+void fragment_main() {
+  mix_30de36();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_30de36() {
+  float res = 1.0f;
+}
+
+void compute_main() {
+  mix_30de36();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/30de36.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_30de36() {
+  float res = 1.0f;
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_30de36();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_30de36();
+  return;
+}
+
+kernel void compute_main() {
+  mix_30de36();
+  return;
+}
+

test/tint/builtins/gen/var/mix/30de36.wgsl.expected.spvasm

@@ -0,0 +1,63 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 29
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_30de36 "mix_30de36"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %float_1 = OpConstant %float 1
+%_ptr_Function_float = OpTypePointer Function %float
+         %16 = OpTypeFunction %v4float
+ %mix_30de36 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_float Function %8
+               OpStore %res %float_1
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %16
+         %18 = OpLabel
+         %19 = OpFunctionCall %void %mix_30de36
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %21 = OpLabel
+         %22 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %22
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %void %mix_30de36
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %27 = OpLabel
+         %28 = OpFunctionCall %void %mix_30de36
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/30de36.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_30de36() {
+  const arg_0 = 1.0;
+  const arg_1 = 1.0;
+  const arg_2 = 1.0;
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_30de36();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_30de36();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_30de36();
+}

test/tint/builtins/gen/var/mix/343c49.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_343c49() {
+  float3 res = (1.0f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_343c49();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_343c49();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_343c49();
+  return;
+}

test/tint/builtins/gen/var/mix/343c49.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_343c49() {
+  float3 res = (1.0f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_343c49();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_343c49();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_343c49();
+  return;
+}

test/tint/builtins/gen/var/mix/343c49.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_343c49() {
+  vec3 res = vec3(1.0f);
+}
+
+vec4 vertex_main() {
+  mix_343c49();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_343c49() {
+  vec3 res = vec3(1.0f);
+}
+
+void fragment_main() {
+  mix_343c49();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_343c49() {
+  vec3 res = vec3(1.0f);
+}
+
+void compute_main() {
+  mix_343c49();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/343c49.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_343c49() {
+  float3 res = float3(1.0f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_343c49();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_343c49();
+  return;
+}
+
+kernel void compute_main() {
+  mix_343c49();
+  return;
+}
+

test/tint/builtins/gen/var/mix/343c49.wgsl.expected.spvasm

@@ -0,0 +1,66 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 32
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_343c49 "mix_343c49"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v3float = OpTypeVector %float 3
+    %float_1 = OpConstant %float 1
+         %15 = OpConstantComposite %v3float %float_1 %float_1 %float_1
+%_ptr_Function_v3float = OpTypePointer Function %v3float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+ %mix_343c49 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %mix_343c49
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %27 = OpLabel
+         %28 = OpFunctionCall %void %mix_343c49
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %30 = OpLabel
+         %31 = OpFunctionCall %void %mix_343c49
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/343c49.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_343c49() {
+  const arg_0 = vec3(1.0);
+  const arg_1 = vec3(1.0);
+  const arg_2 = vec3(1.0);
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_343c49();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_343c49();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_343c49();
+}

test/tint/builtins/gen/var/mix/42d11d.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_42d11d() {
+  float2 res = (1.0f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_42d11d();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_42d11d();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_42d11d();
+  return;
+}

test/tint/builtins/gen/var/mix/42d11d.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_42d11d() {
+  float2 res = (1.0f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_42d11d();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_42d11d();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_42d11d();
+  return;
+}

test/tint/builtins/gen/var/mix/42d11d.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_42d11d() {
+  vec2 res = vec2(1.0f);
+}
+
+vec4 vertex_main() {
+  mix_42d11d();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_42d11d() {
+  vec2 res = vec2(1.0f);
+}
+
+void fragment_main() {
+  mix_42d11d();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_42d11d() {
+  vec2 res = vec2(1.0f);
+}
+
+void compute_main() {
+  mix_42d11d();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/42d11d.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_42d11d() {
+  float2 res = float2(1.0f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_42d11d();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_42d11d();
+  return;
+}
+
+kernel void compute_main() {
+  mix_42d11d();
+  return;
+}
+

test/tint/builtins/gen/var/mix/42d11d.wgsl.expected.spvasm

@@ -0,0 +1,66 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 32
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_42d11d "mix_42d11d"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v2float = OpTypeVector %float 2
+    %float_1 = OpConstant %float 1
+         %15 = OpConstantComposite %v2float %float_1 %float_1
+%_ptr_Function_v2float = OpTypePointer Function %v2float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+ %mix_42d11d = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %mix_42d11d
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %27 = OpLabel
+         %28 = OpFunctionCall %void %mix_42d11d
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %30 = OpLabel
+         %31 = OpFunctionCall %void %mix_42d11d
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/42d11d.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_42d11d() {
+  const arg_0 = vec2(1.0);
+  const arg_1 = vec2(1.0);
+  const arg_2 = 1.0;
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_42d11d();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_42d11d();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_42d11d();
+}

test/tint/builtins/gen/var/mix/98007a.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_98007a() {
+  float4 res = (1.0f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_98007a();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_98007a();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_98007a();
+  return;
+}

test/tint/builtins/gen/var/mix/98007a.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_98007a() {
+  float4 res = (1.0f).xxxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_98007a();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_98007a();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_98007a();
+  return;
+}

test/tint/builtins/gen/var/mix/98007a.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_98007a() {
+  vec4 res = vec4(1.0f);
+}
+
+vec4 vertex_main() {
+  mix_98007a();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_98007a() {
+  vec4 res = vec4(1.0f);
+}
+
+void fragment_main() {
+  mix_98007a();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_98007a() {
+  vec4 res = vec4(1.0f);
+}
+
+void compute_main() {
+  mix_98007a();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/98007a.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_98007a() {
+  float4 res = float4(1.0f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_98007a();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_98007a();
+  return;
+}
+
+kernel void compute_main() {
+  mix_98007a();
+  return;
+}
+

test/tint/builtins/gen/var/mix/98007a.wgsl.expected.spvasm

@@ -0,0 +1,64 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 30
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_98007a "mix_98007a"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %float_1 = OpConstant %float 1
+         %14 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
+%_ptr_Function_v4float = OpTypePointer Function %v4float
+         %17 = OpTypeFunction %v4float
+ %mix_98007a = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v4float Function %5
+               OpStore %res %14
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %17
+         %19 = OpLabel
+         %20 = OpFunctionCall %void %mix_98007a
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %22 = OpLabel
+         %23 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %23
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %25 = OpLabel
+         %26 = OpFunctionCall %void %mix_98007a
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %28 = OpLabel
+         %29 = OpFunctionCall %void %mix_98007a
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/98007a.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_98007a() {
+  const arg_0 = vec4(1.0);
+  const arg_1 = vec4(1.0);
+  const arg_2 = vec4(1.0);
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_98007a();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_98007a();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_98007a();
+}

test/tint/builtins/gen/var/mix/9c2681.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_9c2681() {
+  float3 res = (1.0f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_9c2681();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_9c2681();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_9c2681();
+  return;
+}

test/tint/builtins/gen/var/mix/9c2681.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_9c2681() {
+  float3 res = (1.0f).xxx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_9c2681();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_9c2681();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_9c2681();
+  return;
+}

test/tint/builtins/gen/var/mix/9c2681.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_9c2681() {
+  vec3 res = vec3(1.0f);
+}
+
+vec4 vertex_main() {
+  mix_9c2681();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_9c2681() {
+  vec3 res = vec3(1.0f);
+}
+
+void fragment_main() {
+  mix_9c2681();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_9c2681() {
+  vec3 res = vec3(1.0f);
+}
+
+void compute_main() {
+  mix_9c2681();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/9c2681.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_9c2681() {
+  float3 res = float3(1.0f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_9c2681();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_9c2681();
+  return;
+}
+
+kernel void compute_main() {
+  mix_9c2681();
+  return;
+}
+

test/tint/builtins/gen/var/mix/9c2681.wgsl.expected.spvasm

@@ -0,0 +1,66 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 32
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_9c2681 "mix_9c2681"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v3float = OpTypeVector %float 3
+    %float_1 = OpConstant %float 1
+         %15 = OpConstantComposite %v3float %float_1 %float_1 %float_1
+%_ptr_Function_v3float = OpTypePointer Function %v3float
+         %18 = OpConstantNull %v3float
+         %19 = OpTypeFunction %v4float
+ %mix_9c2681 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v3float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %mix_9c2681
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %27 = OpLabel
+         %28 = OpFunctionCall %void %mix_9c2681
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %30 = OpLabel
+         %31 = OpFunctionCall %void %mix_9c2681
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/9c2681.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_9c2681() {
+  const arg_0 = vec3(1.0);
+  const arg_1 = vec3(1.0);
+  const arg_2 = 1.0;
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_9c2681();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_9c2681();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_9c2681();
+}

test/tint/builtins/gen/var/mix/ef3575.wgsl.expected.dxc.hlsl

@@ -0,0 +1,30 @@
+void mix_ef3575() {
+  float2 res = (1.0f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_ef3575();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_ef3575();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_ef3575();
+  return;
+}

test/tint/builtins/gen/var/mix/ef3575.wgsl.expected.fxc.hlsl

@@ -0,0 +1,30 @@
+void mix_ef3575() {
+  float2 res = (1.0f).xx;
+}
+
+struct tint_symbol {
+  float4 value : SV_Position;
+};
+
+float4 vertex_main_inner() {
+  mix_ef3575();
+  return (0.0f).xxxx;
+}
+
+tint_symbol vertex_main() {
+  const float4 inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = (tint_symbol)0;
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+void fragment_main() {
+  mix_ef3575();
+  return;
+}
+
+[numthreads(1, 1, 1)]
+void compute_main() {
+  mix_ef3575();
+  return;
+}

test/tint/builtins/gen/var/mix/ef3575.wgsl.expected.glsl

@@ -0,0 +1,49 @@
+#version 310 es
+
+void mix_ef3575() {
+  vec2 res = vec2(1.0f);
+}
+
+vec4 vertex_main() {
+  mix_ef3575();
+  return vec4(0.0f);
+}
+
+void main() {
+  gl_PointSize = 1.0;
+  vec4 inner_result = vertex_main();
+  gl_Position = inner_result;
+  gl_Position.y = -(gl_Position.y);
+  gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
+  return;
+}
+#version 310 es
+precision mediump float;
+
+void mix_ef3575() {
+  vec2 res = vec2(1.0f);
+}
+
+void fragment_main() {
+  mix_ef3575();
+}
+
+void main() {
+  fragment_main();
+  return;
+}
+#version 310 es
+
+void mix_ef3575() {
+  vec2 res = vec2(1.0f);
+}
+
+void compute_main() {
+  mix_ef3575();
+}
+
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+void main() {
+  compute_main();
+  return;
+}

test/tint/builtins/gen/var/mix/ef3575.wgsl.expected.msl

@@ -0,0 +1,33 @@
+#include <metal_stdlib>
+
+using namespace metal;
+void mix_ef3575() {
+  float2 res = float2(1.0f);
+}
+
+struct tint_symbol {
+  float4 value [[position]];
+};
+
+float4 vertex_main_inner() {
+  mix_ef3575();
+  return float4(0.0f);
+}
+
+vertex tint_symbol vertex_main() {
+  float4 const inner_result = vertex_main_inner();
+  tint_symbol wrapper_result = {};
+  wrapper_result.value = inner_result;
+  return wrapper_result;
+}
+
+fragment void fragment_main() {
+  mix_ef3575();
+  return;
+}
+
+kernel void compute_main() {
+  mix_ef3575();
+  return;
+}
+

test/tint/builtins/gen/var/mix/ef3575.wgsl.expected.spvasm

@@ -0,0 +1,66 @@
+; SPIR-V
+; Version: 1.3
+; Generator: Google Tint Compiler; 0
+; Bound: 32
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %vertex_main "vertex_main" %value %vertex_point_size
+               OpEntryPoint Fragment %fragment_main "fragment_main"
+               OpEntryPoint GLCompute %compute_main "compute_main"
+               OpExecutionMode %fragment_main OriginUpperLeft
+               OpExecutionMode %compute_main LocalSize 1 1 1
+               OpName %value "value"
+               OpName %vertex_point_size "vertex_point_size"
+               OpName %mix_ef3575 "mix_ef3575"
+               OpName %res "res"
+               OpName %vertex_main_inner "vertex_main_inner"
+               OpName %vertex_main "vertex_main"
+               OpName %fragment_main "fragment_main"
+               OpName %compute_main "compute_main"
+               OpDecorate %value BuiltIn Position
+               OpDecorate %vertex_point_size BuiltIn PointSize
+      %float = OpTypeFloat 32
+    %v4float = OpTypeVector %float 4
+%_ptr_Output_v4float = OpTypePointer Output %v4float
+          %5 = OpConstantNull %v4float
+      %value = OpVariable %_ptr_Output_v4float Output %5
+%_ptr_Output_float = OpTypePointer Output %float
+          %8 = OpConstantNull %float
+%vertex_point_size = OpVariable %_ptr_Output_float Output %8
+       %void = OpTypeVoid
+          %9 = OpTypeFunction %void
+    %v2float = OpTypeVector %float 2
+    %float_1 = OpConstant %float 1
+         %15 = OpConstantComposite %v2float %float_1 %float_1
+%_ptr_Function_v2float = OpTypePointer Function %v2float
+         %18 = OpConstantNull %v2float
+         %19 = OpTypeFunction %v4float
+ %mix_ef3575 = OpFunction %void None %9
+         %12 = OpLabel
+        %res = OpVariable %_ptr_Function_v2float Function %18
+               OpStore %res %15
+               OpReturn
+               OpFunctionEnd
+%vertex_main_inner = OpFunction %v4float None %19
+         %21 = OpLabel
+         %22 = OpFunctionCall %void %mix_ef3575
+               OpReturnValue %5
+               OpFunctionEnd
+%vertex_main = OpFunction %void None %9
+         %24 = OpLabel
+         %25 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %25
+               OpStore %vertex_point_size %float_1
+               OpReturn
+               OpFunctionEnd
+%fragment_main = OpFunction %void None %9
+         %27 = OpLabel
+         %28 = OpFunctionCall %void %mix_ef3575
+               OpReturn
+               OpFunctionEnd
+%compute_main = OpFunction %void None %9
+         %30 = OpLabel
+         %31 = OpFunctionCall %void %mix_ef3575
+               OpReturn
+               OpFunctionEnd

test/tint/builtins/gen/var/mix/ef3575.wgsl.expected.wgsl

@@ -0,0 +1,22 @@
+fn mix_ef3575() {
+  const arg_0 = vec2(1.0);
+  const arg_1 = vec2(1.0);
+  const arg_2 = vec2(1.0);
+  var res = mix(arg_0, arg_1, arg_2);
+}
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+  mix_ef3575();
+  return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+  mix_ef3575();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+  mix_ef3575();
+}

test/tint/builtins/gen/var/textureDimensions/cdc6c9.wgsl.expected.dxc.hlsl

@@ -1,6 +1,6 @@
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 

test/tint/builtins/gen/var/textureDimensions/cdc6c9.wgsl.expected.fxc.hlsl

@@ -1,6 +1,6 @@
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 

test/tint/builtins/gen/var/textureDimensions/cdc6c9.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 uniform highp sampler2D arg_0_1;
@@ -75,22 +64,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 uniform highp sampler2D arg_0_1;
@@ -126,22 +104,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 uniform highp sampler2D arg_0_1;

test/tint/builtins/gen/var/textureDimensions/cdc6c9.wgsl.expected.msl

@@ -19,7 +19,7 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 void textureDimensions_cdc6c9(texture2d<float, access::sample> tint_symbol_1) {

test/tint/builtins/gen/var/textureDimensions/cdc6c9.wgsl.expected.spvasm

@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,10 +30,9 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %textureDimensions_cdc6c9 "textureDimensions_cdc6c9"
@@ -46,14 +45,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -62,12 +61,13 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
+               OpMemberDecorate %ExternalTextureParams 4 Offset 96
+               OpMemberDecorate %ExternalTextureParams 5 Offset 128
+               OpMemberDecorate %ExternalTextureParams 5 ColMajor
+               OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 6 Offset 176
+               OpMemberDecorate %ExternalTextureParams 6 ColMajor
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
                OpDecorate %ext_tex_params NonWritable
                OpDecorate %ext_tex_params DescriptorSet 1
                OpDecorate %ext_tex_params Binding 2
@@ -89,11 +89,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
        %void = OpTypeVoid
          %23 = OpTypeFunction %void

test/tint/builtins/gen/var/textureLoad/1bfdfb.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, u
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_1bfdfb() {

test/tint/builtins/gen/var/textureLoad/1bfdfb.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, u
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_1bfdfb() {

test/tint/builtins/gen/var/textureLoad/1bfdfb.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -60,13 +49,9 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, uve
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_1bfdfb() {
   uvec2 arg_1 = uvec2(1u);
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, ext_tex_params.inner);
 }
 
 vec4 vertex_main() {
@@ -103,22 +88,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -145,13 +119,9 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, uve
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_1bfdfb() {
   uvec2 arg_1 = uvec2(1u);
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, ext_tex_params.inner);
 }
 
 void fragment_main() {
@@ -182,22 +152,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -224,13 +183,9 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, uve
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_1bfdfb() {
   uvec2 arg_1 = uvec2(1u);
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, ext_tex_params.inner);
 }
 
 void compute_main() {

test/tint/builtins/gen/var/textureLoad/1bfdfb.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {

test/tint/builtins/gen/var/textureLoad/1bfdfb.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 159
+; Bound: 143
 ; Schema: 0
                OpCapability Shader
          %29 = OpExtInstImport "GLSL.std.450"
@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,31 +30,20 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureLoadExternal "textureLoadExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
                OpName %coord "coord"
                OpName %params_0 "params"
                OpName %color "color"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %textureLoad_1bfdfb "textureLoad_1bfdfb"
                OpName %arg_1 "arg_1"
                OpName %res "res"
@@ -66,14 +55,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -82,30 +71,18 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
-               OpDecorate %ext_tex_params NonWritable
-               OpDecorate %ext_tex_params DescriptorSet 1
-               OpDecorate %ext_tex_params Binding 2
-               OpDecorate %arg_0 DescriptorSet 1
-               OpDecorate %arg_0 Binding 0
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %ExternalTextureParams 4 Offset 96
                OpMemberDecorate %ExternalTextureParams 5 Offset 128
                OpMemberDecorate %ExternalTextureParams 5 ColMajor
                OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
                OpMemberDecorate %ExternalTextureParams 6 Offset 176
                OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
+               OpDecorate %ext_tex_params NonWritable
+               OpDecorate %ext_tex_params DescriptorSet 1
+               OpDecorate %ext_tex_params Binding 2
+               OpDecorate %arg_0 DescriptorSet 1
+               OpDecorate %arg_0 Binding 0
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -122,11 +99,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %23 = OpTypeFunction %v3float %v3float %GammaTransferParams
        %bool = OpTypeBool
@@ -134,24 +111,22 @@
 %_ptr_Function_v3float = OpTypePointer Function %v3float
          %43 = OpConstantNull %v3float
      %v2uint = OpTypeVector %uint 2
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
          %63 = OpTypeFunction %v4float %11 %11 %v2uint %ExternalTextureParams
      %uint_1 = OpConstant %uint 1
         %int = OpTypeInt 32 1
-         %82 = OpConstantNull %int
+         %80 = OpConstantNull %int
+    %v2float = OpTypeVector %float 2
     %float_1 = OpConstant %float 1
-         %95 = OpConstantNull %uint
-        %113 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+         %94 = OpConstantNull %uint
        %void = OpTypeVoid
-        %127 = OpTypeFunction %void
-        %131 = OpConstantComposite %v2uint %uint_1 %uint_1
+        %112 = OpTypeFunction %void
+        %116 = OpConstantComposite %v2uint %uint_1 %uint_1
 %_ptr_Function_v2uint = OpTypePointer Function %v2uint
-        %134 = OpConstantNull %v2uint
+        %119 = OpConstantNull %v2uint
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %146 = OpTypeFunction %v4float
+        %130 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %23
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -193,105 +168,89 @@
      %plane1 = OpFunctionParameter %11
       %coord = OpFunctionParameter %v2uint
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %72 = OpLabel
+         %70 = OpLabel
       %color = OpVariable %_ptr_Function_v3float Function %43
-         %74 = OpCompositeExtract %uint %params_0 0
-         %76 = OpIEqual %bool %74 %uint_1
-               OpSelectionMerge %77 None
-               OpBranchConditional %76 %78 %79
-         %78 = OpLabel
-         %80 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %83 = OpVectorShuffle %v3float %80 %80 0 1 2
-               OpStore %color %83
-               OpBranch %77
-         %79 = OpLabel
-         %84 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %85 = OpCompositeExtract %float %84 0
-         %86 = OpImageFetch %v4float %plane1 %coord Lod %82
-         %87 = OpVectorShuffle %v2float %86 %86 0 1
-         %88 = OpCompositeExtract %float %87 0
-         %89 = OpCompositeExtract %float %87 1
-         %91 = OpCompositeConstruct %v4float %85 %88 %89 %float_1
-         %92 = OpCompositeExtract %mat3v4float %params_0 2
-         %93 = OpVectorTimesMatrix %v3float %91 %92
-               OpStore %color %93
-               OpBranch %77
+         %72 = OpCompositeExtract %uint %params_0 0
+         %74 = OpIEqual %bool %72 %uint_1
+               OpSelectionMerge %75 None
+               OpBranchConditional %74 %76 %77
+         %76 = OpLabel
+         %78 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %81 = OpVectorShuffle %v3float %78 %78 0 1 2
+               OpStore %color %81
+               OpBranch %75
          %77 = OpLabel
-         %94 = OpCompositeExtract %uint %params_0 1
-         %96 = OpIEqual %bool %94 %95
-               OpSelectionMerge %97 None
-               OpBranchConditional %96 %98 %97
-         %98 = OpLabel
-        %100 = OpLoad %v3float %color
-        %101 = OpCompositeExtract %GammaTransferParams %params_0 3
-         %99 = OpFunctionCall %v3float %gammaCorrection %100 %101
-               OpStore %color %99
-        %102 = OpCompositeExtract %mat3v3float %params_0 5
-        %103 = OpLoad %v3float %color
-        %104 = OpMatrixTimesVector %v3float %102 %103
-               OpStore %color %104
-        %106 = OpLoad %v3float %color
-        %107 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %105 = OpFunctionCall %v3float %gammaCorrection %106 %107
-               OpStore %color %105
-               OpBranch %97
+         %82 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %83 = OpCompositeExtract %float %82 0
+         %84 = OpImageFetch %v4float %plane1 %coord Lod %80
+         %86 = OpVectorShuffle %v2float %84 %84 0 1
+         %87 = OpCompositeExtract %float %86 0
+         %88 = OpCompositeExtract %float %86 1
+         %90 = OpCompositeConstruct %v4float %83 %87 %88 %float_1
+         %91 = OpCompositeExtract %mat3v4float %params_0 2
+         %92 = OpVectorTimesMatrix %v3float %90 %91
+               OpStore %color %92
+               OpBranch %75
+         %75 = OpLabel
+         %93 = OpCompositeExtract %uint %params_0 1
+         %95 = OpIEqual %bool %93 %94
+               OpSelectionMerge %96 None
+               OpBranchConditional %95 %97 %96
          %97 = OpLabel
-        %108 = OpLoad %v3float %color
-        %109 = OpCompositeExtract %float %108 0
-        %110 = OpCompositeExtract %float %108 1
-        %111 = OpCompositeExtract %float %108 2
-        %112 = OpCompositeConstruct %v4float %109 %110 %111 %float_1
-               OpReturnValue %112
+         %99 = OpLoad %v3float %color
+        %100 = OpCompositeExtract %GammaTransferParams %params_0 3
+         %98 = OpFunctionCall %v3float %gammaCorrection %99 %100
+               OpStore %color %98
+        %101 = OpCompositeExtract %mat3v3float %params_0 5
+        %102 = OpLoad %v3float %color
+        %103 = OpMatrixTimesVector %v3float %101 %102
+               OpStore %color %103
+        %105 = OpLoad %v3float %color
+        %106 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %104 = OpFunctionCall %v3float %gammaCorrection %105 %106
+               OpStore %color %104
+               OpBranch %96
+         %96 = OpLabel
+        %107 = OpLoad %v3float %color
+        %108 = OpCompositeExtract %float %107 0
+        %109 = OpCompositeExtract %float %107 1
+        %110 = OpCompositeExtract %float %107 2
+        %111 = OpCompositeConstruct %v4float %108 %109 %110 %float_1
+               OpReturnValue %111
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %113
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %116 = OpLabel
-        %117 = OpCompositeExtract %uint %val 0
-        %118 = OpCompositeExtract %uint %val 1
-        %119 = OpCompositeExtract %mat3v4float %val 2
-        %120 = OpCompositeExtract %GammaTransferParams %val 3
-        %121 = OpCompositeExtract %GammaTransferParams %val 4
-        %122 = OpCompositeExtract %mat3v3float %val 5
-        %123 = OpCompositeExtract %v2float %val 6
-        %124 = OpCompositeExtract %v2float %val 7
-        %125 = OpCompositeConstruct %mat2v2float %123 %124
-        %126 = OpCompositeConstruct %ExternalTextureParams %117 %118 %119 %120 %121 %122 %125
-               OpReturnValue %126
-               OpFunctionEnd
-%textureLoad_1bfdfb = OpFunction %void None %127
-        %130 = OpLabel
-      %arg_1 = OpVariable %_ptr_Function_v2uint Function %134
+%textureLoad_1bfdfb = OpFunction %void None %112
+        %115 = OpLabel
+      %arg_1 = OpVariable %_ptr_Function_v2uint Function %119
         %res = OpVariable %_ptr_Function_v4float Function %5
-               OpStore %arg_1 %131
-        %136 = OpLoad %11 %arg_0
-        %137 = OpLoad %11 %ext_tex_plane_1
-        %138 = OpLoad %v2uint %arg_1
-        %142 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %143 = OpLoad %ExternalTextureParams_std140 %142
-        %139 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %143
-        %135 = OpFunctionCall %v4float %textureLoadExternal %136 %137 %138 %139
-               OpStore %res %135
+               OpStore %arg_1 %116
+        %121 = OpLoad %11 %arg_0
+        %122 = OpLoad %11 %ext_tex_plane_1
+        %123 = OpLoad %v2uint %arg_1
+        %126 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %127 = OpLoad %ExternalTextureParams %126
+        %120 = OpFunctionCall %v4float %textureLoadExternal %121 %122 %123 %127
+               OpStore %res %120
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %146
-        %148 = OpLabel
-        %149 = OpFunctionCall %void %textureLoad_1bfdfb
+%vertex_main_inner = OpFunction %v4float None %130
+        %132 = OpLabel
+        %133 = OpFunctionCall %void %textureLoad_1bfdfb
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %127
-        %151 = OpLabel
-        %152 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %152
+%vertex_main = OpFunction %void None %112
+        %135 = OpLabel
+        %136 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %136
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %127
-        %154 = OpLabel
-        %155 = OpFunctionCall %void %textureLoad_1bfdfb
+%fragment_main = OpFunction %void None %112
+        %138 = OpLabel
+        %139 = OpFunctionCall %void %textureLoad_1bfdfb
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %127
-        %157 = OpLabel
-        %158 = OpFunctionCall %void %textureLoad_1bfdfb
+%compute_main = OpFunction %void None %112
+        %141 = OpLabel
+        %142 = OpFunctionCall %void %textureLoad_1bfdfb
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/var/textureLoad/8acf41.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, i
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_8acf41() {

test/tint/builtins/gen/var/textureLoad/8acf41.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -46,14 +46,14 @@ float4 textureLoadExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, i
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -62,30 +62,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureLoad_8acf41() {

test/tint/builtins/gen/var/textureLoad/8acf41.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -60,13 +49,9 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, ive
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_8acf41() {
   ivec2 arg_1 = ivec2(1);
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, ext_tex_params.inner);
 }
 
 vec4 vertex_main() {
@@ -103,22 +88,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -145,13 +119,9 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, ive
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_8acf41() {
   ivec2 arg_1 = ivec2(1);
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, ext_tex_params.inner);
 }
 
 void fragment_main() {
@@ -182,22 +152,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -224,13 +183,9 @@ vec4 textureLoadExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, ive
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureLoad_8acf41() {
   ivec2 arg_1 = ivec2(1);
-  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureLoadExternal(arg_0_1, ext_tex_plane_1_1, arg_1, ext_tex_params.inner);
 }
 
 void compute_main() {

test/tint/builtins/gen/var/textureLoad/8acf41.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {

test/tint/builtins/gen/var/textureLoad/8acf41.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 160
+; Bound: 144
 ; Schema: 0
                OpCapability Shader
          %29 = OpExtInstImport "GLSL.std.450"
@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,31 +30,20 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureLoadExternal "textureLoadExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
                OpName %coord "coord"
                OpName %params_0 "params"
                OpName %color "color"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %textureLoad_8acf41 "textureLoad_8acf41"
                OpName %arg_1 "arg_1"
                OpName %res "res"
@@ -66,14 +55,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -82,30 +71,18 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
-               OpDecorate %ext_tex_params NonWritable
-               OpDecorate %ext_tex_params DescriptorSet 1
-               OpDecorate %ext_tex_params Binding 2
-               OpDecorate %arg_0 DescriptorSet 1
-               OpDecorate %arg_0 Binding 0
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %ExternalTextureParams 4 Offset 96
                OpMemberDecorate %ExternalTextureParams 5 Offset 128
                OpMemberDecorate %ExternalTextureParams 5 ColMajor
                OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
                OpMemberDecorate %ExternalTextureParams 6 Offset 176
                OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
+               OpDecorate %ext_tex_params NonWritable
+               OpDecorate %ext_tex_params DescriptorSet 1
+               OpDecorate %ext_tex_params Binding 2
+               OpDecorate %arg_0 DescriptorSet 1
+               OpDecorate %arg_0 Binding 0
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -122,11 +99,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %23 = OpTypeFunction %v3float %v3float %GammaTransferParams
        %bool = OpTypeBool
@@ -135,24 +112,22 @@
          %43 = OpConstantNull %v3float
         %int = OpTypeInt 32 1
       %v2int = OpTypeVector %int 2
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
          %63 = OpTypeFunction %v4float %11 %11 %v2int %ExternalTextureParams
      %uint_1 = OpConstant %uint 1
-         %82 = OpConstantNull %int
+         %80 = OpConstantNull %int
+    %v2float = OpTypeVector %float 2
     %float_1 = OpConstant %float 1
-         %95 = OpConstantNull %uint
-        %113 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+         %94 = OpConstantNull %uint
        %void = OpTypeVoid
-        %127 = OpTypeFunction %void
+        %112 = OpTypeFunction %void
       %int_1 = OpConstant %int 1
-        %132 = OpConstantComposite %v2int %int_1 %int_1
+        %117 = OpConstantComposite %v2int %int_1 %int_1
 %_ptr_Function_v2int = OpTypePointer Function %v2int
-        %135 = OpConstantNull %v2int
+        %120 = OpConstantNull %v2int
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %147 = OpTypeFunction %v4float
+        %131 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %23
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -194,105 +169,89 @@
      %plane1 = OpFunctionParameter %11
       %coord = OpFunctionParameter %v2int
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %73 = OpLabel
+         %71 = OpLabel
       %color = OpVariable %_ptr_Function_v3float Function %43
-         %75 = OpCompositeExtract %uint %params_0 0
-         %77 = OpIEqual %bool %75 %uint_1
-               OpSelectionMerge %78 None
-               OpBranchConditional %77 %79 %80
-         %79 = OpLabel
-         %81 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %83 = OpVectorShuffle %v3float %81 %81 0 1 2
-               OpStore %color %83
-               OpBranch %78
-         %80 = OpLabel
-         %84 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %85 = OpCompositeExtract %float %84 0
-         %86 = OpImageFetch %v4float %plane1 %coord Lod %82
-         %87 = OpVectorShuffle %v2float %86 %86 0 1
-         %88 = OpCompositeExtract %float %87 0
-         %89 = OpCompositeExtract %float %87 1
-         %91 = OpCompositeConstruct %v4float %85 %88 %89 %float_1
-         %92 = OpCompositeExtract %mat3v4float %params_0 2
-         %93 = OpVectorTimesMatrix %v3float %91 %92
-               OpStore %color %93
-               OpBranch %78
+         %73 = OpCompositeExtract %uint %params_0 0
+         %75 = OpIEqual %bool %73 %uint_1
+               OpSelectionMerge %76 None
+               OpBranchConditional %75 %77 %78
+         %77 = OpLabel
+         %79 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %81 = OpVectorShuffle %v3float %79 %79 0 1 2
+               OpStore %color %81
+               OpBranch %76
          %78 = OpLabel
-         %94 = OpCompositeExtract %uint %params_0 1
-         %96 = OpIEqual %bool %94 %95
-               OpSelectionMerge %97 None
-               OpBranchConditional %96 %98 %97
-         %98 = OpLabel
-        %100 = OpLoad %v3float %color
-        %101 = OpCompositeExtract %GammaTransferParams %params_0 3
-         %99 = OpFunctionCall %v3float %gammaCorrection %100 %101
-               OpStore %color %99
-        %102 = OpCompositeExtract %mat3v3float %params_0 5
-        %103 = OpLoad %v3float %color
-        %104 = OpMatrixTimesVector %v3float %102 %103
-               OpStore %color %104
-        %106 = OpLoad %v3float %color
-        %107 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %105 = OpFunctionCall %v3float %gammaCorrection %106 %107
-               OpStore %color %105
-               OpBranch %97
+         %82 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %83 = OpCompositeExtract %float %82 0
+         %84 = OpImageFetch %v4float %plane1 %coord Lod %80
+         %86 = OpVectorShuffle %v2float %84 %84 0 1
+         %87 = OpCompositeExtract %float %86 0
+         %88 = OpCompositeExtract %float %86 1
+         %90 = OpCompositeConstruct %v4float %83 %87 %88 %float_1
+         %91 = OpCompositeExtract %mat3v4float %params_0 2
+         %92 = OpVectorTimesMatrix %v3float %90 %91
+               OpStore %color %92
+               OpBranch %76
+         %76 = OpLabel
+         %93 = OpCompositeExtract %uint %params_0 1
+         %95 = OpIEqual %bool %93 %94
+               OpSelectionMerge %96 None
+               OpBranchConditional %95 %97 %96
          %97 = OpLabel
-        %108 = OpLoad %v3float %color
-        %109 = OpCompositeExtract %float %108 0
-        %110 = OpCompositeExtract %float %108 1
-        %111 = OpCompositeExtract %float %108 2
-        %112 = OpCompositeConstruct %v4float %109 %110 %111 %float_1
-               OpReturnValue %112
+         %99 = OpLoad %v3float %color
+        %100 = OpCompositeExtract %GammaTransferParams %params_0 3
+         %98 = OpFunctionCall %v3float %gammaCorrection %99 %100
+               OpStore %color %98
+        %101 = OpCompositeExtract %mat3v3float %params_0 5
+        %102 = OpLoad %v3float %color
+        %103 = OpMatrixTimesVector %v3float %101 %102
+               OpStore %color %103
+        %105 = OpLoad %v3float %color
+        %106 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %104 = OpFunctionCall %v3float %gammaCorrection %105 %106
+               OpStore %color %104
+               OpBranch %96
+         %96 = OpLabel
+        %107 = OpLoad %v3float %color
+        %108 = OpCompositeExtract %float %107 0
+        %109 = OpCompositeExtract %float %107 1
+        %110 = OpCompositeExtract %float %107 2
+        %111 = OpCompositeConstruct %v4float %108 %109 %110 %float_1
+               OpReturnValue %111
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %113
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %116 = OpLabel
-        %117 = OpCompositeExtract %uint %val 0
-        %118 = OpCompositeExtract %uint %val 1
-        %119 = OpCompositeExtract %mat3v4float %val 2
-        %120 = OpCompositeExtract %GammaTransferParams %val 3
-        %121 = OpCompositeExtract %GammaTransferParams %val 4
-        %122 = OpCompositeExtract %mat3v3float %val 5
-        %123 = OpCompositeExtract %v2float %val 6
-        %124 = OpCompositeExtract %v2float %val 7
-        %125 = OpCompositeConstruct %mat2v2float %123 %124
-        %126 = OpCompositeConstruct %ExternalTextureParams %117 %118 %119 %120 %121 %122 %125
-               OpReturnValue %126
-               OpFunctionEnd
-%textureLoad_8acf41 = OpFunction %void None %127
-        %130 = OpLabel
-      %arg_1 = OpVariable %_ptr_Function_v2int Function %135
+%textureLoad_8acf41 = OpFunction %void None %112
+        %115 = OpLabel
+      %arg_1 = OpVariable %_ptr_Function_v2int Function %120
         %res = OpVariable %_ptr_Function_v4float Function %5
-               OpStore %arg_1 %132
-        %137 = OpLoad %11 %arg_0
-        %138 = OpLoad %11 %ext_tex_plane_1
-        %139 = OpLoad %v2int %arg_1
-        %143 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %144 = OpLoad %ExternalTextureParams_std140 %143
-        %140 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %144
-        %136 = OpFunctionCall %v4float %textureLoadExternal %137 %138 %139 %140
-               OpStore %res %136
+               OpStore %arg_1 %117
+        %122 = OpLoad %11 %arg_0
+        %123 = OpLoad %11 %ext_tex_plane_1
+        %124 = OpLoad %v2int %arg_1
+        %127 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %128 = OpLoad %ExternalTextureParams %127
+        %121 = OpFunctionCall %v4float %textureLoadExternal %122 %123 %124 %128
+               OpStore %res %121
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %147
-        %149 = OpLabel
-        %150 = OpFunctionCall %void %textureLoad_8acf41
+%vertex_main_inner = OpFunction %v4float None %131
+        %133 = OpLabel
+        %134 = OpFunctionCall %void %textureLoad_8acf41
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %127
-        %152 = OpLabel
-        %153 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %153
+%vertex_main = OpFunction %void None %112
+        %136 = OpLabel
+        %137 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %137
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %127
-        %155 = OpLabel
-        %156 = OpFunctionCall %void %textureLoad_8acf41
+%fragment_main = OpFunction %void None %112
+        %139 = OpLabel
+        %140 = OpFunctionCall %void %textureLoad_8acf41
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %127
-        %158 = OpLabel
-        %159 = OpFunctionCall %void %textureLoad_8acf41
+%compute_main = OpFunction %void None %112
+        %142 = OpLabel
+        %143 = OpFunctionCall %void %textureLoad_8acf41
                OpReturn
                OpFunctionEnd

test/tint/builtins/gen/var/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t2, space1);
 cbuffer cbuffer_ext_tex_params : register(b3, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 SamplerState arg_1 : register(s1, space1);
@@ -33,7 +33,7 @@ float3 gammaCorrection(float3 v, GammaTransferParams params) {
 }
 
 float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, SamplerState smp, float2 coord, ExternalTextureParams params) {
-  const float2 modifiedCoords = (mul(params.rotationMatrix, (coord - 0.5f)) + 0.5f);
+  const float2 modifiedCoords = mul(params.coordTransformationMatrix, float3((coord - 0.5f), 1.0f));
   int3 tint_tmp;
   plane0.GetDimensions(0, tint_tmp.x, tint_tmp.y, tint_tmp.z);
   const float2 plane0_dims = float2(tint_tmp.xy);
@@ -58,14 +58,14 @@ float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1,
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -74,30 +74,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureSampleBaseClampToEdge_7c04e6() {

test/tint/builtins/gen/var/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t2, space1);
 cbuffer cbuffer_ext_tex_params : register(b3, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 SamplerState arg_1 : register(s1, space1);
@@ -33,7 +33,7 @@ float3 gammaCorrection(float3 v, GammaTransferParams params) {
 }
 
 float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1, SamplerState smp, float2 coord, ExternalTextureParams params) {
-  const float2 modifiedCoords = (mul(params.rotationMatrix, (coord - 0.5f)) + 0.5f);
+  const float2 modifiedCoords = mul(params.coordTransformationMatrix, float3((coord - 0.5f), 1.0f));
   int3 tint_tmp;
   plane0.GetDimensions(0, tint_tmp.x, tint_tmp.y, tint_tmp.z);
   const float2 plane0_dims = float2(tint_tmp.xy);
@@ -58,14 +58,14 @@ float4 textureSampleExternal(Texture2D<float4> plane0, Texture2D<float4> plane1,
   return float4(color, 1.0f);
 }
 
-float3x4 tint_symbol_3(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_3(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_5(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -74,30 +74,28 @@ GammaTransferParams tint_symbol_5(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_11;
+  const GammaTransferParams tint_symbol_10 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_10;
 }
 
-float3x3 tint_symbol_7(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_7(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_9(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_9(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_1(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_1(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
-  return tint_symbol_12;
+  const ExternalTextureParams tint_symbol_11 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_3(buffer, (offset + 16u)), tint_symbol_5(buffer, (offset + 64u)), tint_symbol_5(buffer, (offset + 96u)), tint_symbol_7(buffer, (offset + 128u)), tint_symbol_9(buffer, (offset + 176u))};
+  return tint_symbol_11;
 }
 
 void textureSampleBaseClampToEdge_7c04e6() {

test/tint/builtins/gen/var/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 3, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 3, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -45,7 +34,7 @@ vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
 
 
 vec4 textureSampleExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, highp sampler2D plane0_smp, highp sampler2D plane1_smp, vec2 coord, ExternalTextureParams params) {
-  vec2 modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  vec2 modifiedCoords = (vec3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   vec2 plane0_dims = vec2(uvec2(textureSize(plane0_1, 0)));
   vec2 plane0_half_texel = (vec2(0.5f) / plane0_dims);
   vec2 plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));
@@ -70,13 +59,9 @@ uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
 uniform highp sampler2D arg_0_arg_1;
 uniform highp sampler2D ext_tex_plane_1_arg_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureSampleBaseClampToEdge_7c04e6() {
   vec2 arg_2 = vec2(1.0f);
-  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, arg_2, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, arg_2, ext_tex_params.inner);
 }
 
 vec4 vertex_main() {
@@ -113,22 +98,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 3, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 3, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -140,7 +114,7 @@ vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
 
 
 vec4 textureSampleExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, highp sampler2D plane0_smp, highp sampler2D plane1_smp, vec2 coord, ExternalTextureParams params) {
-  vec2 modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  vec2 modifiedCoords = (vec3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   vec2 plane0_dims = vec2(uvec2(textureSize(plane0_1, 0)));
   vec2 plane0_half_texel = (vec2(0.5f) / plane0_dims);
   vec2 plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));
@@ -165,13 +139,9 @@ uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
 uniform highp sampler2D arg_0_arg_1;
 uniform highp sampler2D ext_tex_plane_1_arg_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureSampleBaseClampToEdge_7c04e6() {
   vec2 arg_2 = vec2(1.0f);
-  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, arg_2, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, arg_2, ext_tex_params.inner);
 }
 
 void fragment_main() {
@@ -202,22 +172,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 3, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 3, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -229,7 +188,7 @@ vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
 
 
 vec4 textureSampleExternal(highp sampler2D plane0_1, highp sampler2D plane1_1, highp sampler2D plane0_smp, highp sampler2D plane1_smp, vec2 coord, ExternalTextureParams params) {
-  vec2 modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  vec2 modifiedCoords = (vec3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   vec2 plane0_dims = vec2(uvec2(textureSize(plane0_1, 0)));
   vec2 plane0_half_texel = (vec2(0.5f) / plane0_dims);
   vec2 plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));
@@ -254,13 +213,9 @@ uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_1;
 uniform highp sampler2D arg_0_arg_1;
 uniform highp sampler2D ext_tex_plane_1_arg_1;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void textureSampleBaseClampToEdge_7c04e6() {
   vec2 arg_2 = vec2(1.0f);
-  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, arg_2, conv_ExternalTextureParams(ext_tex_params.inner));
+  vec4 res = textureSampleExternal(arg_0_1, ext_tex_plane_1_1, arg_0_arg_1, ext_tex_plane_1_arg_1, arg_2, ext_tex_params.inner);
 }
 
 void compute_main() {

test/tint/builtins/gen/var/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {
@@ -44,7 +44,7 @@ float3 gammaCorrection(float3 v, GammaTransferParams params) {
 }
 
 float4 textureSampleExternal(texture2d<float, access::sample> plane0, texture2d<float, access::sample> plane1, sampler smp, float2 coord, ExternalTextureParams params) {
-  float2 const modifiedCoords = (((coord - 0.5f) * params.rotationMatrix) + 0.5f);
+  float2 const modifiedCoords = (float3((coord - 0.5f), 1.0f) * params.coordTransformationMatrix);
   float2 const plane0_dims = float2(uint2(plane0.get_width(0), plane0.get_height(0)));
   float2 const plane0_half_texel = (float2(0.5f) / plane0_dims);
   float2 const plane0_clamped = clamp(modifiedCoords, plane0_half_texel, (1.0f - plane0_half_texel));

test/tint/builtins/gen/var/textureSampleBaseClampToEdge/7c04e6.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 192
+; Bound: 176
 ; Schema: 0
                OpCapability Shader
                OpCapability ImageQuery
@@ -15,13 +15,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -31,24 +31,15 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %arg_1 "arg_1"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureSampleExternal "textureSampleExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
@@ -56,8 +47,6 @@
                OpName %coord "coord"
                OpName %params_0 "params"
                OpName %color "color"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %textureSampleBaseClampToEdge_7c04e6 "textureSampleBaseClampToEdge_7c04e6"
                OpName %arg_2 "arg_2"
                OpName %res "res"
@@ -69,14 +58,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 2
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -85,12 +74,13 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
+               OpMemberDecorate %ExternalTextureParams 4 Offset 96
+               OpMemberDecorate %ExternalTextureParams 5 Offset 128
+               OpMemberDecorate %ExternalTextureParams 5 ColMajor
+               OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 6 Offset 176
+               OpMemberDecorate %ExternalTextureParams 6 ColMajor
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
                OpDecorate %ext_tex_params NonWritable
                OpDecorate %ext_tex_params DescriptorSet 1
                OpDecorate %ext_tex_params Binding 3
@@ -98,19 +88,6 @@
                OpDecorate %arg_0 Binding 0
                OpDecorate %arg_1 DescriptorSet 1
                OpDecorate %arg_1 Binding 1
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
-               OpMemberDecorate %ExternalTextureParams 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -127,11 +104,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %25 = OpTypeSampler
 %_ptr_UniformConstant_25 = OpTypePointer UniformConstant %25
@@ -141,28 +118,26 @@
      %v3bool = OpTypeVector %bool 3
 %_ptr_Function_v3float = OpTypePointer Function %v3float
          %46 = OpConstantNull %v3float
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
+    %v2float = OpTypeVector %float 2
          %66 = OpTypeFunction %v4float %11 %11 %25 %v2float %ExternalTextureParams
   %float_0_5 = OpConstant %float 0.5
 %_ptr_Function_v2float = OpTypePointer Function %v2float
-         %80 = OpConstantNull %v2float
+         %79 = OpConstantNull %v2float
+    %float_1 = OpConstant %float 1
      %v2uint = OpTypeVector %uint 2
         %int = OpTypeInt 32 1
          %91 = OpConstantNull %int
          %92 = OpConstantComposite %v2float %float_0_5 %float_0_5
-    %float_1 = OpConstant %float 1
      %uint_1 = OpConstant %uint 1
-        %114 = OpTypeSampledImage %11
-        %129 = OpConstantNull %uint
-        %147 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+        %113 = OpTypeSampledImage %11
+        %128 = OpConstantNull %uint
        %void = OpTypeVoid
-        %161 = OpTypeFunction %void
-        %165 = OpConstantComposite %v2float %float_1 %float_1
+        %146 = OpTypeFunction %void
+        %150 = OpConstantComposite %v2float %float_1 %float_1
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %179 = OpTypeFunction %v4float
+        %163 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %26
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -205,131 +180,115 @@
         %smp = OpFunctionParameter %25
       %coord = OpFunctionParameter %v2float
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %75 = OpLabel
-         %78 = OpVariable %_ptr_Function_v2float Function %80
-         %85 = OpVariable %_ptr_Function_v2float Function %80
-         %97 = OpVariable %_ptr_Function_v2float Function %80
-        %104 = OpVariable %_ptr_Function_v2float Function %80
+         %74 = OpLabel
+         %77 = OpVariable %_ptr_Function_v2float Function %79
+         %96 = OpVariable %_ptr_Function_v2float Function %79
+        %103 = OpVariable %_ptr_Function_v2float Function %79
       %color = OpVariable %_ptr_Function_v3float Function %46
-         %81 = OpCompositeConstruct %v2float %float_0_5 %float_0_5
-         %77 = OpFSub %v2float %coord %81
-         %82 = OpCompositeExtract %mat2v2float %params_0 6
-         %83 = OpVectorTimesMatrix %v2float %77 %82
-         %86 = OpCompositeConstruct %v2float %float_0_5 %float_0_5
-         %84 = OpFAdd %v2float %83 %86
+         %80 = OpCompositeConstruct %v2float %float_0_5 %float_0_5
+         %76 = OpFSub %v2float %coord %80
+         %81 = OpCompositeExtract %float %76 0
+         %82 = OpCompositeExtract %float %76 1
+         %84 = OpCompositeConstruct %v3float %81 %82 %float_1
+         %85 = OpCompositeExtract %mat2v3float %params_0 6
+         %86 = OpVectorTimesMatrix %v2float %84 %85
          %88 = OpImageQuerySizeLod %v2uint %plane0 %91
          %87 = OpConvertUToF %v2float %88
          %93 = OpFDiv %v2float %92 %87
-         %98 = OpCompositeConstruct %v2float %float_1 %float_1
-         %96 = OpFSub %v2float %98 %93
-         %94 = OpExtInst %v2float %32 NClamp %84 %93 %96
-        %100 = OpImageQuerySizeLod %v2uint %plane1 %91
-         %99 = OpConvertUToF %v2float %100
-        %101 = OpFDiv %v2float %92 %99
-        %105 = OpCompositeConstruct %v2float %float_1 %float_1
-        %103 = OpFSub %v2float %105 %101
-        %102 = OpExtInst %v2float %32 NClamp %84 %101 %103
-        %107 = OpCompositeExtract %uint %params_0 0
-        %109 = OpIEqual %bool %107 %uint_1
-               OpSelectionMerge %110 None
-               OpBranchConditional %109 %111 %112
-        %111 = OpLabel
-        %115 = OpSampledImage %114 %plane0 %smp
-        %113 = OpImageSampleExplicitLod %v4float %115 %94 Lod %8
-        %116 = OpVectorShuffle %v3float %113 %113 0 1 2
-               OpStore %color %116
-               OpBranch %110
-        %112 = OpLabel
-        %118 = OpSampledImage %114 %plane0 %smp
-        %117 = OpImageSampleExplicitLod %v4float %118 %94 Lod %8
-        %119 = OpCompositeExtract %float %117 0
-        %121 = OpSampledImage %114 %plane1 %smp
-        %120 = OpImageSampleExplicitLod %v4float %121 %102 Lod %8
-        %122 = OpVectorShuffle %v2float %120 %120 0 1
-        %123 = OpCompositeExtract %float %122 0
-        %124 = OpCompositeExtract %float %122 1
-        %125 = OpCompositeConstruct %v4float %119 %123 %124 %float_1
-        %126 = OpCompositeExtract %mat3v4float %params_0 2
-        %127 = OpVectorTimesMatrix %v3float %125 %126
-               OpStore %color %127
-               OpBranch %110
+         %97 = OpCompositeConstruct %v2float %float_1 %float_1
+         %95 = OpFSub %v2float %97 %93
+         %94 = OpExtInst %v2float %32 NClamp %86 %93 %95
+         %99 = OpImageQuerySizeLod %v2uint %plane1 %91
+         %98 = OpConvertUToF %v2float %99
+        %100 = OpFDiv %v2float %92 %98
+        %104 = OpCompositeConstruct %v2float %float_1 %float_1
+        %102 = OpFSub %v2float %104 %100
+        %101 = OpExtInst %v2float %32 NClamp %86 %100 %102
+        %106 = OpCompositeExtract %uint %params_0 0
+        %108 = OpIEqual %bool %106 %uint_1
+               OpSelectionMerge %109 None
+               OpBranchConditional %108 %110 %111
         %110 = OpLabel
-        %128 = OpCompositeExtract %uint %params_0 1
-        %130 = OpIEqual %bool %128 %129
-               OpSelectionMerge %131 None
-               OpBranchConditional %130 %132 %131
-        %132 = OpLabel
-        %134 = OpLoad %v3float %color
-        %135 = OpCompositeExtract %GammaTransferParams %params_0 3
-        %133 = OpFunctionCall %v3float %gammaCorrection %134 %135
-               OpStore %color %133
-        %136 = OpCompositeExtract %mat3v3float %params_0 5
-        %137 = OpLoad %v3float %color
-        %138 = OpMatrixTimesVector %v3float %136 %137
-               OpStore %color %138
-        %140 = OpLoad %v3float %color
-        %141 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %139 = OpFunctionCall %v3float %gammaCorrection %140 %141
-               OpStore %color %139
-               OpBranch %131
+        %114 = OpSampledImage %113 %plane0 %smp
+        %112 = OpImageSampleExplicitLod %v4float %114 %94 Lod %8
+        %115 = OpVectorShuffle %v3float %112 %112 0 1 2
+               OpStore %color %115
+               OpBranch %109
+        %111 = OpLabel
+        %117 = OpSampledImage %113 %plane0 %smp
+        %116 = OpImageSampleExplicitLod %v4float %117 %94 Lod %8
+        %118 = OpCompositeExtract %float %116 0
+        %120 = OpSampledImage %113 %plane1 %smp
+        %119 = OpImageSampleExplicitLod %v4float %120 %101 Lod %8
+        %121 = OpVectorShuffle %v2float %119 %119 0 1
+        %122 = OpCompositeExtract %float %121 0
+        %123 = OpCompositeExtract %float %121 1
+        %124 = OpCompositeConstruct %v4float %118 %122 %123 %float_1
+        %125 = OpCompositeExtract %mat3v4float %params_0 2
+        %126 = OpVectorTimesMatrix %v3float %124 %125
+               OpStore %color %126
+               OpBranch %109
+        %109 = OpLabel
+        %127 = OpCompositeExtract %uint %params_0 1
+        %129 = OpIEqual %bool %127 %128
+               OpSelectionMerge %130 None
+               OpBranchConditional %129 %131 %130
         %131 = OpLabel
-        %142 = OpLoad %v3float %color
-        %143 = OpCompositeExtract %float %142 0
-        %144 = OpCompositeExtract %float %142 1
-        %145 = OpCompositeExtract %float %142 2
-        %146 = OpCompositeConstruct %v4float %143 %144 %145 %float_1
-               OpReturnValue %146
+        %133 = OpLoad %v3float %color
+        %134 = OpCompositeExtract %GammaTransferParams %params_0 3
+        %132 = OpFunctionCall %v3float %gammaCorrection %133 %134
+               OpStore %color %132
+        %135 = OpCompositeExtract %mat3v3float %params_0 5
+        %136 = OpLoad %v3float %color
+        %137 = OpMatrixTimesVector %v3float %135 %136
+               OpStore %color %137
+        %139 = OpLoad %v3float %color
+        %140 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %138 = OpFunctionCall %v3float %gammaCorrection %139 %140
+               OpStore %color %138
+               OpBranch %130
+        %130 = OpLabel
+        %141 = OpLoad %v3float %color
+        %142 = OpCompositeExtract %float %141 0
+        %143 = OpCompositeExtract %float %141 1
+        %144 = OpCompositeExtract %float %141 2
+        %145 = OpCompositeConstruct %v4float %142 %143 %144 %float_1
+               OpReturnValue %145
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %147
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %150 = OpLabel
-        %151 = OpCompositeExtract %uint %val 0
-        %152 = OpCompositeExtract %uint %val 1
-        %153 = OpCompositeExtract %mat3v4float %val 2
-        %154 = OpCompositeExtract %GammaTransferParams %val 3
-        %155 = OpCompositeExtract %GammaTransferParams %val 4
-        %156 = OpCompositeExtract %mat3v3float %val 5
-        %157 = OpCompositeExtract %v2float %val 6
-        %158 = OpCompositeExtract %v2float %val 7
-        %159 = OpCompositeConstruct %mat2v2float %157 %158
-        %160 = OpCompositeConstruct %ExternalTextureParams %151 %152 %153 %154 %155 %156 %159
-               OpReturnValue %160
-               OpFunctionEnd
-%textureSampleBaseClampToEdge_7c04e6 = OpFunction %void None %161
-        %164 = OpLabel
-      %arg_2 = OpVariable %_ptr_Function_v2float Function %80
+%textureSampleBaseClampToEdge_7c04e6 = OpFunction %void None %146
+        %149 = OpLabel
+      %arg_2 = OpVariable %_ptr_Function_v2float Function %79
         %res = OpVariable %_ptr_Function_v4float Function %5
-               OpStore %arg_2 %165
-        %168 = OpLoad %11 %arg_0
-        %169 = OpLoad %11 %ext_tex_plane_1
-        %170 = OpLoad %25 %arg_1
-        %171 = OpLoad %v2float %arg_2
-        %175 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %176 = OpLoad %ExternalTextureParams_std140 %175
-        %172 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %176
-        %167 = OpFunctionCall %v4float %textureSampleExternal %168 %169 %170 %171 %172
-               OpStore %res %167
+               OpStore %arg_2 %150
+        %153 = OpLoad %11 %arg_0
+        %154 = OpLoad %11 %ext_tex_plane_1
+        %155 = OpLoad %25 %arg_1
+        %156 = OpLoad %v2float %arg_2
+        %159 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %160 = OpLoad %ExternalTextureParams %159
+        %152 = OpFunctionCall %v4float %textureSampleExternal %153 %154 %155 %156 %160
+               OpStore %res %152
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %179
-        %181 = OpLabel
-        %182 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
+%vertex_main_inner = OpFunction %v4float None %163
+        %165 = OpLabel
+        %166 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %161
-        %184 = OpLabel
-        %185 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %185
+%vertex_main = OpFunction %void None %146
+        %168 = OpLabel
+        %169 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %169
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %161
-        %187 = OpLabel
-        %188 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
+%fragment_main = OpFunction %void None %146
+        %171 = OpLabel
+        %172 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %161
-        %190 = OpLabel
-        %191 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
+%compute_main = OpFunction %void None %146
+        %174 = OpLabel
+        %175 = OpFunctionCall %void %textureSampleBaseClampToEdge_7c04e6
                OpReturn
                OpFunctionEnd

test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.dxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -50,14 +50,14 @@ float4 textureLoad2d(Texture2D<float4> tint_symbol, Texture2D<float4> ext_tex_pl
   return textureLoadExternal(tint_symbol, ext_tex_plane_1_1, coords, ext_tex_params_1);
 }
 
-float3x4 tint_symbol_4(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_4(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_6(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_6(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -66,30 +66,28 @@ GammaTransferParams tint_symbol_6(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_12 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_12;
+  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_11;
 }
 
-float3x3 tint_symbol_8(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_8(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_10(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_10(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_2(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_2(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_13 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_4(buffer, (offset + 16u)), tint_symbol_6(buffer, (offset + 64u)), tint_symbol_6(buffer, (offset + 96u)), tint_symbol_8(buffer, (offset + 128u)), tint_symbol_10(buffer, (offset + 176u))};
-  return tint_symbol_13;
+  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_4(buffer, (offset + 16u)), tint_symbol_6(buffer, (offset + 64u)), tint_symbol_6(buffer, (offset + 96u)), tint_symbol_8(buffer, (offset + 128u)), tint_symbol_10(buffer, (offset + 176u))};
+  return tint_symbol_12;
 }
 
 void doTextureLoad() {

test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.fxc.hlsl

@@ -15,12 +15,12 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   float3x3 gamutConversionMatrix;
-  float2x2 rotationMatrix;
+  float2x3 coordTransformationMatrix;
 };
 
 Texture2D<float4> ext_tex_plane_1 : register(t1, space1);
 cbuffer cbuffer_ext_tex_params : register(b2, space1) {
-  uint4 ext_tex_params[12];
+  uint4 ext_tex_params[13];
 };
 Texture2D<float4> arg_0 : register(t0, space1);
 
@@ -50,14 +50,14 @@ float4 textureLoad2d(Texture2D<float4> tint_symbol, Texture2D<float4> ext_tex_pl
   return textureLoadExternal(tint_symbol, ext_tex_plane_1_1, coords, ext_tex_params_1);
 }
 
-float3x4 tint_symbol_4(uint4 buffer[12], uint offset) {
+float3x4 tint_symbol_4(uint4 buffer[13], uint offset) {
   const uint scalar_offset = ((offset + 0u)) / 4;
   const uint scalar_offset_1 = ((offset + 16u)) / 4;
   const uint scalar_offset_2 = ((offset + 32u)) / 4;
   return float3x4(asfloat(buffer[scalar_offset / 4]), asfloat(buffer[scalar_offset_1 / 4]), asfloat(buffer[scalar_offset_2 / 4]));
 }
 
-GammaTransferParams tint_symbol_6(uint4 buffer[12], uint offset) {
+GammaTransferParams tint_symbol_6(uint4 buffer[13], uint offset) {
   const uint scalar_offset_3 = ((offset + 0u)) / 4;
   const uint scalar_offset_4 = ((offset + 4u)) / 4;
   const uint scalar_offset_5 = ((offset + 8u)) / 4;
@@ -66,30 +66,28 @@ GammaTransferParams tint_symbol_6(uint4 buffer[12], uint offset) {
   const uint scalar_offset_8 = ((offset + 20u)) / 4;
   const uint scalar_offset_9 = ((offset + 24u)) / 4;
   const uint scalar_offset_10 = ((offset + 28u)) / 4;
-  const GammaTransferParams tint_symbol_12 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
-  return tint_symbol_12;
+  const GammaTransferParams tint_symbol_11 = {asfloat(buffer[scalar_offset_3 / 4][scalar_offset_3 % 4]), asfloat(buffer[scalar_offset_4 / 4][scalar_offset_4 % 4]), asfloat(buffer[scalar_offset_5 / 4][scalar_offset_5 % 4]), asfloat(buffer[scalar_offset_6 / 4][scalar_offset_6 % 4]), asfloat(buffer[scalar_offset_7 / 4][scalar_offset_7 % 4]), asfloat(buffer[scalar_offset_8 / 4][scalar_offset_8 % 4]), asfloat(buffer[scalar_offset_9 / 4][scalar_offset_9 % 4]), buffer[scalar_offset_10 / 4][scalar_offset_10 % 4]};
+  return tint_symbol_11;
 }
 
-float3x3 tint_symbol_8(uint4 buffer[12], uint offset) {
+float3x3 tint_symbol_8(uint4 buffer[13], uint offset) {
   const uint scalar_offset_11 = ((offset + 0u)) / 4;
   const uint scalar_offset_12 = ((offset + 16u)) / 4;
   const uint scalar_offset_13 = ((offset + 32u)) / 4;
   return float3x3(asfloat(buffer[scalar_offset_11 / 4].xyz), asfloat(buffer[scalar_offset_12 / 4].xyz), asfloat(buffer[scalar_offset_13 / 4].xyz));
 }
 
-float2x2 tint_symbol_10(uint4 buffer[12], uint offset) {
+float2x3 tint_symbol_10(uint4 buffer[13], uint offset) {
   const uint scalar_offset_14 = ((offset + 0u)) / 4;
-  uint4 ubo_load = buffer[scalar_offset_14 / 4];
-  const uint scalar_offset_15 = ((offset + 8u)) / 4;
-  uint4 ubo_load_1 = buffer[scalar_offset_15 / 4];
-  return float2x2(asfloat(((scalar_offset_14 & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_15 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
+  const uint scalar_offset_15 = ((offset + 16u)) / 4;
+  return float2x3(asfloat(buffer[scalar_offset_14 / 4].xyz), asfloat(buffer[scalar_offset_15 / 4].xyz));
 }
 
-ExternalTextureParams tint_symbol_2(uint4 buffer[12], uint offset) {
+ExternalTextureParams tint_symbol_2(uint4 buffer[13], uint offset) {
   const uint scalar_offset_16 = ((offset + 0u)) / 4;
   const uint scalar_offset_17 = ((offset + 4u)) / 4;
-  const ExternalTextureParams tint_symbol_13 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_4(buffer, (offset + 16u)), tint_symbol_6(buffer, (offset + 64u)), tint_symbol_6(buffer, (offset + 96u)), tint_symbol_8(buffer, (offset + 128u)), tint_symbol_10(buffer, (offset + 176u))};
-  return tint_symbol_13;
+  const ExternalTextureParams tint_symbol_12 = {buffer[scalar_offset_16 / 4][scalar_offset_16 % 4], buffer[scalar_offset_17 / 4][scalar_offset_17 % 4], tint_symbol_4(buffer, (offset + 16u)), tint_symbol_6(buffer, (offset + 64u)), tint_symbol_6(buffer, (offset + 96u)), tint_symbol_8(buffer, (offset + 128u)), tint_symbol_10(buffer, (offset + 176u))};
+  return tint_symbol_12;
 }
 
 void doTextureLoad() {

test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.glsl

@@ -18,22 +18,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -64,12 +53,8 @@ vec4 textureLoad2d(highp sampler2D tint_symbol_1, highp sampler2D ext_tex_plane_
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_2;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void doTextureLoad() {
-  vec4 res = textureLoad2d(arg_0_1, ext_tex_plane_1_2, conv_ExternalTextureParams(ext_tex_params.inner), ivec2(0));
+  vec4 res = textureLoad2d(arg_0_1, ext_tex_plane_1_2, ext_tex_params.inner, ivec2(0));
 }
 
 vec4 vertex_main() {
@@ -106,22 +91,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -152,12 +126,8 @@ vec4 textureLoad2d(highp sampler2D tint_symbol_1, highp sampler2D ext_tex_plane_
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_2;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void doTextureLoad() {
-  vec4 res = textureLoad2d(arg_0_1, ext_tex_plane_1_2, conv_ExternalTextureParams(ext_tex_params.inner), ivec2(0));
+  vec4 res = textureLoad2d(arg_0_1, ext_tex_plane_1_2, ext_tex_params.inner, ivec2(0));
 }
 
 void fragment_main() {
@@ -188,22 +158,11 @@ struct ExternalTextureParams {
   GammaTransferParams gammaDecodeParams;
   GammaTransferParams gammaEncodeParams;
   mat3 gamutConversionMatrix;
-  mat2 rotationMatrix;
+  mat2x3 coordTransformationMatrix;
 };
 
-struct ExternalTextureParams_std140 {
-  uint numPlanes;
-  uint doYuvToRgbConversionOnly;
-  mat3x4 yuvToRgbConversionMatrix;
-  GammaTransferParams gammaDecodeParams;
-  GammaTransferParams gammaEncodeParams;
-  mat3 gamutConversionMatrix;
-  vec2 rotationMatrix_0;
-  vec2 rotationMatrix_1;
-};
-
-layout(binding = 2, std140) uniform ext_tex_params_block_std140_ubo {
-  ExternalTextureParams_std140 inner;
+layout(binding = 2, std140) uniform ext_tex_params_block_ubo {
+  ExternalTextureParams inner;
 } ext_tex_params;
 
 vec3 gammaCorrection(vec3 v, GammaTransferParams params) {
@@ -234,12 +193,8 @@ vec4 textureLoad2d(highp sampler2D tint_symbol_1, highp sampler2D ext_tex_plane_
 
 uniform highp sampler2D arg_0_1;
 uniform highp sampler2D ext_tex_plane_1_2;
-ExternalTextureParams conv_ExternalTextureParams(ExternalTextureParams_std140 val) {
-  return ExternalTextureParams(val.numPlanes, val.doYuvToRgbConversionOnly, val.yuvToRgbConversionMatrix, val.gammaDecodeParams, val.gammaEncodeParams, val.gamutConversionMatrix, mat2(val.rotationMatrix_0, val.rotationMatrix_1));
-}
-
 void doTextureLoad() {
-  vec4 res = textureLoad2d(arg_0_1, ext_tex_plane_1_2, conv_ExternalTextureParams(ext_tex_params.inner), ivec2(0));
+  vec4 res = textureLoad2d(arg_0_1, ext_tex_plane_1_2, ext_tex_params.inner, ivec2(0));
 }
 
 void compute_main() {

test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.msl

@@ -33,7 +33,7 @@ struct ExternalTextureParams {
   /* 0x0040 */ GammaTransferParams gammaDecodeParams;
   /* 0x0060 */ GammaTransferParams gammaEncodeParams;
   /* 0x0080 */ float3x3 gamutConversionMatrix;
-  /* 0x00b0 */ float2x2 rotationMatrix;
+  /* 0x00b0 */ float2x3 coordTransformationMatrix;
 };
 
 float3 gammaCorrection(float3 v, GammaTransferParams params) {

test/tint/builtins/textureLoad/texture_external_param.wgsl.expected.spvasm

@@ -1,7 +1,7 @@
 ; SPIR-V
 ; Version: 1.3
 ; Generator: Google Tint Compiler; 0
-; Bound: 163
+; Bound: 147
 ; Schema: 0
                OpCapability Shader
          %29 = OpExtInstImport "GLSL.std.450"
@@ -14,13 +14,13 @@
                OpName %value "value"
                OpName %vertex_point_size "vertex_point_size"
                OpName %ext_tex_plane_1 "ext_tex_plane_1"
-               OpName %ext_tex_params_block_std140 "ext_tex_params_block_std140"
-               OpMemberName %ext_tex_params_block_std140 0 "inner"
-               OpName %ExternalTextureParams_std140 "ExternalTextureParams_std140"
-               OpMemberName %ExternalTextureParams_std140 0 "numPlanes"
-               OpMemberName %ExternalTextureParams_std140 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams_std140 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 3 "gammaDecodeParams"
+               OpName %ext_tex_params_block "ext_tex_params_block"
+               OpMemberName %ext_tex_params_block 0 "inner"
+               OpName %ExternalTextureParams "ExternalTextureParams"
+               OpMemberName %ExternalTextureParams 0 "numPlanes"
+               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
+               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
+               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
                OpName %GammaTransferParams "GammaTransferParams"
                OpMemberName %GammaTransferParams 0 "G"
                OpMemberName %GammaTransferParams 1 "A"
@@ -30,23 +30,14 @@
                OpMemberName %GammaTransferParams 5 "E"
                OpMemberName %GammaTransferParams 6 "F"
                OpMemberName %GammaTransferParams 7 "padding"
-               OpMemberName %ExternalTextureParams_std140 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams_std140 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams_std140 6 "rotationMatrix_0"
-               OpMemberName %ExternalTextureParams_std140 7 "rotationMatrix_1"
+               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
+               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
+               OpMemberName %ExternalTextureParams 6 "coordTransformationMatrix"
                OpName %ext_tex_params "ext_tex_params"
                OpName %arg_0 "arg_0"
                OpName %gammaCorrection "gammaCorrection"
                OpName %v "v"
                OpName %params "params"
-               OpName %ExternalTextureParams "ExternalTextureParams"
-               OpMemberName %ExternalTextureParams 0 "numPlanes"
-               OpMemberName %ExternalTextureParams 1 "doYuvToRgbConversionOnly"
-               OpMemberName %ExternalTextureParams 2 "yuvToRgbConversionMatrix"
-               OpMemberName %ExternalTextureParams 3 "gammaDecodeParams"
-               OpMemberName %ExternalTextureParams 4 "gammaEncodeParams"
-               OpMemberName %ExternalTextureParams 5 "gamutConversionMatrix"
-               OpMemberName %ExternalTextureParams 6 "rotationMatrix"
                OpName %textureLoadExternal "textureLoadExternal"
                OpName %plane0 "plane0"
                OpName %plane1 "plane1"
@@ -58,8 +49,6 @@
                OpName %ext_tex_plane_1_1 "ext_tex_plane_1_1"
                OpName %ext_tex_params_1 "ext_tex_params_1"
                OpName %coords "coords"
-               OpName %conv_ExternalTextureParams "conv_ExternalTextureParams"
-               OpName %val "val"
                OpName %doTextureLoad "doTextureLoad"
                OpName %res "res"
                OpName %vertex_main_inner "vertex_main_inner"
@@ -70,14 +59,14 @@
                OpDecorate %vertex_point_size BuiltIn PointSize
                OpDecorate %ext_tex_plane_1 DescriptorSet 1
                OpDecorate %ext_tex_plane_1 Binding 1
-               OpDecorate %ext_tex_params_block_std140 Block
-               OpMemberDecorate %ext_tex_params_block_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams_std140 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams_std140 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams_std140 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 3 Offset 64
+               OpDecorate %ext_tex_params_block Block
+               OpMemberDecorate %ext_tex_params_block 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 0 Offset 0
+               OpMemberDecorate %ExternalTextureParams 1 Offset 4
+               OpMemberDecorate %ExternalTextureParams 2 Offset 16
+               OpMemberDecorate %ExternalTextureParams 2 ColMajor
+               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
+               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %GammaTransferParams 0 Offset 0
                OpMemberDecorate %GammaTransferParams 1 Offset 4
                OpMemberDecorate %GammaTransferParams 2 Offset 8
@@ -86,30 +75,18 @@
                OpMemberDecorate %GammaTransferParams 5 Offset 20
                OpMemberDecorate %GammaTransferParams 6 Offset 24
                OpMemberDecorate %GammaTransferParams 7 Offset 28
-               OpMemberDecorate %ExternalTextureParams_std140 4 Offset 96
-               OpMemberDecorate %ExternalTextureParams_std140 5 Offset 128
-               OpMemberDecorate %ExternalTextureParams_std140 5 ColMajor
-               OpMemberDecorate %ExternalTextureParams_std140 5 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams_std140 6 Offset 176
-               OpMemberDecorate %ExternalTextureParams_std140 7 Offset 184
-               OpDecorate %ext_tex_params NonWritable
-               OpDecorate %ext_tex_params DescriptorSet 1
-               OpDecorate %ext_tex_params Binding 2
-               OpDecorate %arg_0 DescriptorSet 1
-               OpDecorate %arg_0 Binding 0
-               OpMemberDecorate %ExternalTextureParams 0 Offset 0
-               OpMemberDecorate %ExternalTextureParams 1 Offset 4
-               OpMemberDecorate %ExternalTextureParams 2 Offset 16
-               OpMemberDecorate %ExternalTextureParams 2 ColMajor
-               OpMemberDecorate %ExternalTextureParams 2 MatrixStride 16
-               OpMemberDecorate %ExternalTextureParams 3 Offset 64
                OpMemberDecorate %ExternalTextureParams 4 Offset 96
                OpMemberDecorate %ExternalTextureParams 5 Offset 128
                OpMemberDecorate %ExternalTextureParams 5 ColMajor
                OpMemberDecorate %ExternalTextureParams 5 MatrixStride 16
                OpMemberDecorate %ExternalTextureParams 6 Offset 176
                OpMemberDecorate %ExternalTextureParams 6 ColMajor
-               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 8
+               OpMemberDecorate %ExternalTextureParams 6 MatrixStride 16
+               OpDecorate %ext_tex_params NonWritable
+               OpDecorate %ext_tex_params DescriptorSet 1
+               OpDecorate %ext_tex_params Binding 2
+               OpDecorate %arg_0 DescriptorSet 1
+               OpDecorate %arg_0 Binding 0
       %float = OpTypeFloat 32
     %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -126,11 +103,11 @@
 %GammaTransferParams = OpTypeStruct %float %float %float %float %float %float %float %uint
     %v3float = OpTypeVector %float 3
 %mat3v3float = OpTypeMatrix %v3float 3
-    %v2float = OpTypeVector %float 2
-%ExternalTextureParams_std140 = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %v2float %v2float
-%ext_tex_params_block_std140 = OpTypeStruct %ExternalTextureParams_std140
-%_ptr_Uniform_ext_tex_params_block_std140 = OpTypePointer Uniform %ext_tex_params_block_std140
-%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block_std140 Uniform
+%mat2v3float = OpTypeMatrix %v3float 2
+%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v3float
+%ext_tex_params_block = OpTypeStruct %ExternalTextureParams
+%_ptr_Uniform_ext_tex_params_block = OpTypePointer Uniform %ext_tex_params_block
+%ext_tex_params = OpVariable %_ptr_Uniform_ext_tex_params_block Uniform
       %arg_0 = OpVariable %_ptr_UniformConstant_11 UniformConstant
          %23 = OpTypeFunction %v3float %v3float %GammaTransferParams
        %bool = OpTypeBool
@@ -139,22 +116,20 @@
          %43 = OpConstantNull %v3float
         %int = OpTypeInt 32 1
       %v2int = OpTypeVector %int 2
-%mat2v2float = OpTypeMatrix %v2float 2
-%ExternalTextureParams = OpTypeStruct %uint %uint %mat3v4float %GammaTransferParams %GammaTransferParams %mat3v3float %mat2v2float
          %63 = OpTypeFunction %v4float %11 %11 %v2int %ExternalTextureParams
      %uint_1 = OpConstant %uint 1
-         %82 = OpConstantNull %int
+         %80 = OpConstantNull %int
+    %v2float = OpTypeVector %float 2
     %float_1 = OpConstant %float 1
-         %95 = OpConstantNull %uint
-        %113 = OpTypeFunction %v4float %11 %11 %ExternalTextureParams %v2int
-        %121 = OpTypeFunction %ExternalTextureParams %ExternalTextureParams_std140
+         %94 = OpConstantNull %uint
+        %112 = OpTypeFunction %v4float %11 %11 %ExternalTextureParams %v2int
        %void = OpTypeVoid
-        %135 = OpTypeFunction %void
+        %120 = OpTypeFunction %void
      %uint_0 = OpConstant %uint 0
-%_ptr_Uniform_ExternalTextureParams_std140 = OpTypePointer Uniform %ExternalTextureParams_std140
-        %147 = OpConstantNull %v2int
+%_ptr_Uniform_ExternalTextureParams = OpTypePointer Uniform %ExternalTextureParams
+        %131 = OpConstantNull %v2int
 %_ptr_Function_v4float = OpTypePointer Function %v4float
-        %150 = OpTypeFunction %v4float
+        %134 = OpTypeFunction %v4float
 %gammaCorrection = OpFunction %v3float None %23
           %v = OpFunctionParameter %v3float
      %params = OpFunctionParameter %GammaTransferParams
@@ -196,111 +171,95 @@
      %plane1 = OpFunctionParameter %11
       %coord = OpFunctionParameter %v2int
    %params_0 = OpFunctionParameter %ExternalTextureParams
-         %73 = OpLabel
+         %71 = OpLabel
       %color = OpVariable %_ptr_Function_v3float Function %43
-         %75 = OpCompositeExtract %uint %params_0 0
-         %77 = OpIEqual %bool %75 %uint_1
-               OpSelectionMerge %78 None
-               OpBranchConditional %77 %79 %80
-         %79 = OpLabel
-         %81 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %83 = OpVectorShuffle %v3float %81 %81 0 1 2
-               OpStore %color %83
-               OpBranch %78
-         %80 = OpLabel
-         %84 = OpImageFetch %v4float %plane0 %coord Lod %82
-         %85 = OpCompositeExtract %float %84 0
-         %86 = OpImageFetch %v4float %plane1 %coord Lod %82
-         %87 = OpVectorShuffle %v2float %86 %86 0 1
-         %88 = OpCompositeExtract %float %87 0
-         %89 = OpCompositeExtract %float %87 1
-         %91 = OpCompositeConstruct %v4float %85 %88 %89 %float_1
-         %92 = OpCompositeExtract %mat3v4float %params_0 2
-         %93 = OpVectorTimesMatrix %v3float %91 %92
-               OpStore %color %93
-               OpBranch %78
+         %73 = OpCompositeExtract %uint %params_0 0
+         %75 = OpIEqual %bool %73 %uint_1
+               OpSelectionMerge %76 None
+               OpBranchConditional %75 %77 %78
+         %77 = OpLabel
+         %79 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %81 = OpVectorShuffle %v3float %79 %79 0 1 2
+               OpStore %color %81
+               OpBranch %76
          %78 = OpLabel
-         %94 = OpCompositeExtract %uint %params_0 1
-         %96 = OpIEqual %bool %94 %95
-               OpSelectionMerge %97 None
-               OpBranchConditional %96 %98 %97
-         %98 = OpLabel
-        %100 = OpLoad %v3float %color
-        %101 = OpCompositeExtract %GammaTransferParams %params_0 3
-         %99 = OpFunctionCall %v3float %gammaCorrection %100 %101
-               OpStore %color %99
-        %102 = OpCompositeExtract %mat3v3float %params_0 5
-        %103 = OpLoad %v3float %color
-        %104 = OpMatrixTimesVector %v3float %102 %103
-               OpStore %color %104
-        %106 = OpLoad %v3float %color
-        %107 = OpCompositeExtract %GammaTransferParams %params_0 4
-        %105 = OpFunctionCall %v3float %gammaCorrection %106 %107
-               OpStore %color %105
-               OpBranch %97
+         %82 = OpImageFetch %v4float %plane0 %coord Lod %80
+         %83 = OpCompositeExtract %float %82 0
+         %84 = OpImageFetch %v4float %plane1 %coord Lod %80
+         %86 = OpVectorShuffle %v2float %84 %84 0 1
+         %87 = OpCompositeExtract %float %86 0
+         %88 = OpCompositeExtract %float %86 1
+         %90 = OpCompositeConstruct %v4float %83 %87 %88 %float_1
+         %91 = OpCompositeExtract %mat3v4float %params_0 2
+         %92 = OpVectorTimesMatrix %v3float %90 %91
+               OpStore %color %92
+               OpBranch %76
+         %76 = OpLabel
+         %93 = OpCompositeExtract %uint %params_0 1
+         %95 = OpIEqual %bool %93 %94
+               OpSelectionMerge %96 None
+               OpBranchConditional %95 %97 %96
          %97 = OpLabel
-        %108 = OpLoad %v3float %color
-        %109 = OpCompositeExtract %float %108 0
-        %110 = OpCompositeExtract %float %108 1
-        %111 = OpCompositeExtract %float %108 2
-        %112 = OpCompositeConstruct %v4float %109 %110 %111 %float_1
-               OpReturnValue %112
+         %99 = OpLoad %v3float %color
+        %100 = OpCompositeExtract %GammaTransferParams %params_0 3
+         %98 = OpFunctionCall %v3float %gammaCorrection %99 %100
+               OpStore %color %98
+        %101 = OpCompositeExtract %mat3v3float %params_0 5
+        %102 = OpLoad %v3float %color
+        %103 = OpMatrixTimesVector %v3float %101 %102
+               OpStore %color %103
+        %105 = OpLoad %v3float %color
+        %106 = OpCompositeExtract %GammaTransferParams %params_0 4
+        %104 = OpFunctionCall %v3float %gammaCorrection %105 %106
+               OpStore %color %104
+               OpBranch %96
+         %96 = OpLabel
+        %107 = OpLoad %v3float %color
+        %108 = OpCompositeExtract %float %107 0
+        %109 = OpCompositeExtract %float %107 1
+        %110 = OpCompositeExtract %float %107 2
+        %111 = OpCompositeConstruct %v4float %108 %109 %110 %float_1
+               OpReturnValue %111
                OpFunctionEnd
-%textureLoad2d = OpFunction %v4float None %113
+%textureLoad2d = OpFunction %v4float None %112
     %texture = OpFunctionParameter %11
 %ext_tex_plane_1_1 = OpFunctionParameter %11
 %ext_tex_params_1 = OpFunctionParameter %ExternalTextureParams
      %coords = OpFunctionParameter %v2int
-        %119 = OpLabel
-        %120 = OpFunctionCall %v4float %textureLoadExternal %texture %ext_tex_plane_1_1 %coords %ext_tex_params_1
-               OpReturnValue %120
+        %118 = OpLabel
+        %119 = OpFunctionCall %v4float %textureLoadExternal %texture %ext_tex_plane_1_1 %coords %ext_tex_params_1
+               OpReturnValue %119
                OpFunctionEnd
-%conv_ExternalTextureParams = OpFunction %ExternalTextureParams None %121
-        %val = OpFunctionParameter %ExternalTextureParams_std140
-        %124 = OpLabel
-        %125 = OpCompositeExtract %uint %val 0
-        %126 = OpCompositeExtract %uint %val 1
-        %127 = OpCompositeExtract %mat3v4float %val 2
-        %128 = OpCompositeExtract %GammaTransferParams %val 3
-        %129 = OpCompositeExtract %GammaTransferParams %val 4
-        %130 = OpCompositeExtract %mat3v3float %val 5
-        %131 = OpCompositeExtract %v2float %val 6
-        %132 = OpCompositeExtract %v2float %val 7
-        %133 = OpCompositeConstruct %mat2v2float %131 %132
-        %134 = OpCompositeConstruct %ExternalTextureParams %125 %126 %127 %128 %129 %130 %133
-               OpReturnValue %134
-               OpFunctionEnd
-%doTextureLoad = OpFunction %void None %135
-        %138 = OpLabel
+%doTextureLoad = OpFunction %void None %120
+        %123 = OpLabel
         %res = OpVariable %_ptr_Function_v4float Function %5
-        %140 = OpLoad %11 %arg_0
-        %141 = OpLoad %11 %ext_tex_plane_1
-        %145 = OpAccessChain %_ptr_Uniform_ExternalTextureParams_std140 %ext_tex_params %uint_0
-        %146 = OpLoad %ExternalTextureParams_std140 %145
-        %142 = OpFunctionCall %ExternalTextureParams %conv_ExternalTextureParams %146
-        %139 = OpFunctionCall %v4float %textureLoad2d %140 %141 %142 %147
-               OpStore %res %139
+        %125 = OpLoad %11 %arg_0
+        %126 = OpLoad %11 %ext_tex_plane_1
+        %129 = OpAccessChain %_ptr_Uniform_ExternalTextureParams %ext_tex_params %uint_0
+        %130 = OpLoad %ExternalTextureParams %129
+        %124 = OpFunctionCall %v4float %textureLoad2d %125 %126 %130 %131
+               OpStore %res %124
                OpReturn
                OpFunctionEnd
-%vertex_main_inner = OpFunction %v4float None %150
-        %152 = OpLabel
-        %153 = OpFunctionCall %void %doTextureLoad
+%vertex_main_inner = OpFunction %v4float None %134
+        %136 = OpLabel
+        %137 = OpFunctionCall %void %doTextureLoad
                OpReturnValue %5
                OpFunctionEnd
-%vertex_main = OpFunction %void None %135
-        %155 = OpLabel
-        %156 = OpFunctionCall %v4float %vertex_main_inner
-               OpStore %value %156
+%vertex_main = OpFunction %void None %120
+        %139 = OpLabel
+        %140 = OpFunctionCall %v4float %vertex_main_inner
+               OpStore %value %140
                OpStore %vertex_point_size %float_1
                OpReturn
                OpFunctionEnd
-%fragment_main = OpFunction %void None %135
-        %158 = OpLabel
-        %159 = OpFunctionCall %void %doTextureLoad
+%fragment_main = OpFunction %void None %120
+        %142 = OpLabel
+        %143 = OpFunctionCall %void %doTextureLoad
                OpReturn
                OpFunctionEnd
-%compute_main = OpFunction %void None %135
-        %161 = OpLabel
-        %162 = OpFunctionCall %void %doTextureLoad
+%compute_main = OpFunction %void None %120
+        %145 = OpLabel
+        %146 = OpFunctionCall %void %doTextureLoad
                OpReturn
                OpFunctionEnd