Alastair Donaldson f7e73d4ee3 Add tests derived from VK-GL-CTS
This adds SPIR-V assembly and WGSL tests derived from VK-GL-CTS commit
571256871c2e2f03995373e1e4a02958d8cd8cf5. The following procedure was
followed:

- Those .amber files in VK-GL-CTS wholly owned by Google were
  identified

- All GLSL and SPIR-V shaders were extracted from the Amber files and
  converted into SPIR-V binaries

- The compact-ids pass of spirv-opt was applied to each binary

- Duplicate binaries were removed

- spirv-opt -O was used to obtain an optimized version of each remaining
  binary, with duplicates discarded

- Binaries that failed validation using spirv-val with target
  environment SPIR-V 1.3 were discarded

- Those binaries that tint could not successfully convert into WGSL were
  put aside for further investigation

- SPIR-V assembly versions of the remaining binaries are included in
  this CL

- test-runner with -generate-expected and -generate-skip was used to
  generate expected .spvasm, .msl, .hlsl and .wgsl outputs for these
  SPIR-V assembly tests

- Each successfully-generated .expected.wgsl is included in this CL
  again, as a WGLSL test

- test-runner with -generate-expected and -generate-skip was used again,
  to generate expected outputs for these WGSL tests

Change-Id: Ibe9baf2729cf97e0b633db9a426f53362a5de540
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/58842
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2021-07-23 13:10:12 +00:00

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#include <metal_stdlib>
using namespace metal;
struct buf0 {
/* 0x0000 */ packed_float2 resolution;
};
struct tint_array_wrapper {
float4 arr[16];
};
struct main_out {
float4 x_GLF_color_1;
};
struct tint_symbol_2 {
float4 x_GLF_color_1 [[color(0)]];
};
int collatz_i1_(thread int* const v) {
int count = 0;
count = 0;
while (true) {
int const x_89 = *(v);
if ((x_89 > 1)) {
} else {
break;
}
int const x_92 = *(v);
if (((x_92 & 1) == 1)) {
int const x_98 = *(v);
*(v) = ((3 * x_98) + 1);
} else {
int const x_101 = *(v);
*(v) = (x_101 / 2);
}
int const x_103 = count;
count = (x_103 + 1);
}
int const x_105 = count;
return x_105;
}
void main_1(constant buf0& x_10, thread float4* const tint_symbol_6, thread float4* const tint_symbol_7) {
float2 lin = 0.0f;
int v_1 = 0;
int param = 0;
tint_array_wrapper indexable = {};
float4 const x_63 = *(tint_symbol_6);
float2 const x_66 = x_10.resolution;
lin = (float2(x_63.x, x_63.y) / x_66);
float2 const x_68 = lin;
lin = floor((x_68 * 8.0f));
float const x_72 = lin.x;
float const x_76 = lin.y;
v_1 = ((int(x_72) * 8) + int(x_76));
int const x_79 = v_1;
param = x_79;
int const x_80 = collatz_i1_(&(param));
tint_array_wrapper const tint_symbol_4 = {.arr={float4(0.0f, 0.0f, 0.0f, 1.0f), float4(0.5f, 0.0f, 0.0f, 1.0f), float4(0.0f, 0.5f, 0.0f, 1.0f), float4(0.5f, 0.5f, 0.0f, 1.0f), float4(0.0f, 0.0f, 0.5f, 1.0f), float4(0.5f, 0.0f, 0.5f, 1.0f), float4(0.0f, 0.5f, 0.5f, 1.0f), float4(0.5f, 0.5f, 0.5f, 1.0f), float4(0.0f, 0.0f, 0.0f, 1.0f), float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(1.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f, 0.0f, 1.0f, 1.0f), float4(0.0f, 1.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f)}};
indexable = tint_symbol_4;
float4 const x_83 = indexable.arr[(x_80 % 16)];
*(tint_symbol_7) = x_83;
return;
}
fragment tint_symbol_2 tint_symbol(float4 gl_FragCoord_param [[position]], constant buf0& x_10 [[buffer(0)]]) {
thread float4 tint_symbol_8 = 0.0f;
thread float4 tint_symbol_9 = 0.0f;
tint_symbol_8 = gl_FragCoord_param;
main_1(x_10, &(tint_symbol_8), &(tint_symbol_9));
main_out const tint_symbol_3 = {.x_GLF_color_1=tint_symbol_9};
tint_symbol_2 const tint_symbol_5 = {.x_GLF_color_1=tint_symbol_3.x_GLF_color_1};
return tint_symbol_5;
}