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https://github.com/encounter/dawn-cmake.git
synced 2025-07-09 22:56:06 +00:00
a5d73ce965
This is a major reworking of this transform. The old transform code was getting unwieldy, with part of the complication coming from the handling of multiple return statements. By generating a wrapper function instead, we can avoid a lot of this complexity. The original entry point function is stripped of all shader IO attributes (as well as `stage` and `workgroup_size`), but the body is left unmodified. A new entry point wrapper function is introduced which calls the original function, packing/unpacking the shader inputs as necessary, and propagates the result to the corresponding shader outputs. The new code has been refactored to use a state object with the different parts of the transform split into separate functions, which makes it much more manageable. Fixed: tint:1076 Bug: tint:920 Change-Id: I3490a0ea7a3509a4e198ce730e476516649d8d96 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60521 Auto-Submit: James Price <jrprice@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: James Price <jrprice@google.com> Reviewed-by: Ben Clayton <bclayton@google.com>
49 lines
1.8 KiB
HLSL
49 lines
1.8 KiB
HLSL
cbuffer cbuffer_x_20 : register(b0, space0) {
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uint4 x_20[1];
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};
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cbuffer cbuffer_x_26 : register(b0, space1) {
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uint4 x_26[1];
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};
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struct tint_symbol_1 {
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uint gl_VertexIndex : SV_VertexID;
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};
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struct tint_symbol_2 {
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float4 value : SV_Position;
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};
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float2x2 tint_symbol_3(uint4 buffer[1], uint offset) {
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const uint scalar_offset = ((offset + 0u)) / 4;
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uint4 ubo_load = buffer[scalar_offset / 4];
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const uint scalar_offset_1 = ((offset + 8u)) / 4;
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uint4 ubo_load_1 = buffer[scalar_offset_1 / 4];
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return float2x2(asfloat(((scalar_offset & 2) ? ubo_load.zw : ubo_load.xy)), asfloat(((scalar_offset_1 & 2) ? ubo_load_1.zw : ubo_load_1.xy)));
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}
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float2x2 tint_symbol_5(uint4 buffer[1], uint offset) {
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const uint scalar_offset_2 = ((offset + 0u)) / 4;
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uint4 ubo_load_2 = buffer[scalar_offset_2 / 4];
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const uint scalar_offset_3 = ((offset + 8u)) / 4;
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uint4 ubo_load_3 = buffer[scalar_offset_3 / 4];
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return float2x2(asfloat(((scalar_offset_2 & 2) ? ubo_load_2.zw : ubo_load_2.xy)), asfloat(((scalar_offset_3 & 2) ? ubo_load_3.zw : ubo_load_3.xy)));
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}
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float4 main_inner(uint gl_VertexIndex) {
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float2 indexable[3] = (float2[3])0;
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const float2x2 x_23 = tint_symbol_3(x_20, 0u);
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const float2x2 x_28 = tint_symbol_5(x_26, 0u);
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const uint x_46 = gl_VertexIndex;
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const float2 tint_symbol_7[3] = {float2(-1.0f, 1.0f), float2(1.0f, 1.0f), float2(-1.0f, -1.0f)};
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indexable = tint_symbol_7;
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const float2 x_51 = indexable[x_46];
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const float2 x_52 = mul(x_51, float2x2((x_23[0u] + x_28[0u]), (x_23[1u] + x_28[1u])));
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return float4(x_52.x, x_52.y, 0.0f, 1.0f);
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}
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tint_symbol_2 main(tint_symbol_1 tint_symbol) {
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const float4 inner_result = main_inner(tint_symbol.gl_VertexIndex);
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tint_symbol_2 wrapper_result = (tint_symbol_2)0;
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wrapper_result.value = inner_result;
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return wrapper_result;
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}
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