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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OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %_GLF_color
OpExecutionMode %main OriginUpperLeft
OpSource ESSL 310
OpName %main "main"
OpName %i "i"
OpName %buf0 "buf0"
OpMemberName %buf0 0 "_GLF_uniform_int_values"
OpName %_ ""
OpName %v "v"
OpName %_GLF_color "_GLF_color"
OpDecorate %_arr_int_uint_3 ArrayStride 16
OpMemberDecorate %buf0 0 Offset 0
OpDecorate %buf0 Block
OpDecorate %_ DescriptorSet 0
OpDecorate %_ Binding 0
OpDecorate %_GLF_color Location 0
%void = OpTypeVoid
%10 = OpTypeFunction %void
%int = OpTypeInt 32 1
%_ptr_Function_int = OpTypePointer Function %int
%uint = OpTypeInt 32 0
%uint_3 = OpConstant %uint 3
%_arr_int_uint_3 = OpTypeArray %int %uint_3
%buf0 = OpTypeStruct %_arr_int_uint_3
%_ptr_Uniform_buf0 = OpTypePointer Uniform %buf0
%_ = OpVariable %_ptr_Uniform_buf0 Uniform
%int_0 = OpConstant %int 0
%int_1 = OpConstant %int 1
%_ptr_Uniform_int = OpTypePointer Uniform %int
%int_2 = OpConstant %int 2
%bool = OpTypeBool
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%uint_100 = OpConstant %uint 100
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%_ptr_Output_v4float = OpTypePointer Output %v4float
%_GLF_color = OpVariable %_ptr_Output_v4float Output
%main = OpFunction %void None %10
%28 = OpLabel
%i = OpVariable %_ptr_Function_int Function
%v = OpVariable %_ptr_Function_v4float Function
%29 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_1
%30 = OpLoad %int %29
OpStore %i %30
OpBranch %31
%31 = OpLabel
OpLoopMerge %32 %33 None
OpBranch %34
%34 = OpLabel
%35 = OpLoad %int %i
%36 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_2
%37 = OpLoad %int %36
%38 = OpSLessThan %bool %35 %37
OpBranchConditional %38 %39 %32
%39 = OpLabel
%40 = OpExtInst %v4float %1 UnpackUnorm4x8 %uint_100
OpStore %v %40
%41 = OpAccessChain %_ptr_Function_float %v %uint_0
%42 = OpLoad %float %41
%43 = OpConvertFToS %int %42
%44 = OpLoad %int %i
%45 = OpSGreaterThan %bool %43 %44
OpSelectionMerge %46 None
OpBranchConditional %45 %47 %46
%47 = OpLabel
%48 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_1
%49 = OpLoad %int %48
%50 = OpConvertSToF %float %49
%51 = OpCompositeConstruct %v4float %50 %50 %50 %50
OpStore %_GLF_color %51
OpReturn
%46 = OpLabel
OpBranch %33
%33 = OpLabel
%52 = OpLoad %int %i
%53 = OpIAdd %int %52 %int_1
OpStore %i %53
OpBranch %31
%32 = OpLabel
%54 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_0
%55 = OpLoad %int %54
%56 = OpConvertSToF %float %55
%57 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_1
%58 = OpLoad %int %57
%59 = OpConvertSToF %float %58
%60 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_1
%61 = OpLoad %int %60
%62 = OpConvertSToF %float %61
%63 = OpAccessChain %_ptr_Uniform_int %_ %int_0 %int_0
%64 = OpLoad %int %63
%65 = OpConvertSToF %float %64
%66 = OpCompositeConstruct %v4float %56 %59 %62 %65
OpStore %_GLF_color %66
OpReturn
OpFunctionEnd