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Fix HLSL offsets for non-cbuffers (#3668)

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This commit is contained in:
Pavel Asyutchenko 2024-07-29 19:34:50 +02:00 committed by arcady-lunarg
parent 4b73607b89
commit 9f34b25f30
4 changed files with 105 additions and 7 deletions
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3
SPIRV/GlslangToSpv.cpp
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@ -5404,6 +5404,8 @@ void TGlslangToSpvTraverser::updateMemberOffset(const glslang::TType& structType
memberAlignment = componentAlignment;
// Don't add unnecessary padding after this member
// (undo std140 bumping size to a mutliple of vec4)
if (explicitLayout == glslang::ElpStd140) {
if (memberType.isMatrix()) {
if (matrixLayout == glslang::ElmRowMajor)
memberSize -= componentSize * (4 - memberType.getMatrixCols());
@ -5412,6 +5414,7 @@ void TGlslangToSpvTraverser::updateMemberOffset(const glslang::TType& structType
} else if (memberType.isArray())
memberSize -= componentSize * (4 - memberType.getVectorSize());
}
}
// Bump up to member alignment
glslang::RoundToPow2(currentOffset, memberAlignment);

81
Test/baseResults/hlsl.buffer-offsets.comp.out Normal file
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@ -0,0 +1,81 @@
hlsl.buffer-offsets.comp
Shader version: 500
local_size = (1, 1, 1)
0:? Sequence
0:12 Function Definition: @main( ( temp void)
0:12 Function Parameters:
0:12 Function Definition: main( ( temp void)
0:12 Function Parameters:
0:? Sequence
0:12 Function Call: @main( ( temp void)
0:? Linker Objects
0:? 'bIterData' (layout( binding=2 row_major std430) readonly buffer block{layout( row_major std430) buffer unsized 1-element array of structure{ temp 24-element array of float mIntegrationTrafo, temp 3-element array of float mWind, temp uint mIsTurning} @data})
Linked compute stage:
Shader version: 500
local_size = (1, 1, 1)
0:? Sequence
0:12 Function Definition: @main( ( temp void)
0:12 Function Parameters:
0:12 Function Definition: main( ( temp void)
0:12 Function Parameters:
0:? Sequence
0:12 Function Call: @main( ( temp void)
0:? Linker Objects
0:? 'bIterData' (layout( binding=2 row_major std430) readonly buffer block{layout( row_major std430) buffer unsized 1-element array of structure{ temp 24-element array of float mIntegrationTrafo, temp 3-element array of float mWind, temp uint mIsTurning} @data})
// Module Version 10000
// Generated by (magic number): 8000b
// Id's are bound by 20
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint GLCompute 4 "main"
ExecutionMode 4 LocalSize 1 1 1
Source HLSL 500
Name 4 "main"
Name 6 "@main("
Name 15 "GfxIterationData"
MemberName 15(GfxIterationData) 0 "mIntegrationTrafo"
MemberName 15(GfxIterationData) 1 "mWind"
MemberName 15(GfxIterationData) 2 "mIsTurning"
Name 17 "bIterData"
MemberName 17(bIterData) 0 "@data"
Name 19 "bIterData"
Decorate 12 ArrayStride 4
Decorate 14 ArrayStride 4
MemberDecorate 15(GfxIterationData) 0 Offset 0
MemberDecorate 15(GfxIterationData) 1 Offset 96
MemberDecorate 15(GfxIterationData) 2 Offset 108
Decorate 16 ArrayStride 112
Decorate 17(bIterData) BufferBlock
MemberDecorate 17(bIterData) 0 NonWritable
MemberDecorate 17(bIterData) 0 Offset 0
Decorate 19(bIterData) Binding 2
Decorate 19(bIterData) DescriptorSet 0
2: TypeVoid
3: TypeFunction 2
9: TypeFloat 32
10: TypeInt 32 0
11: 10(int) Constant 24
12: TypeArray 9(float) 11
13: 10(int) Constant 3
14: TypeArray 9(float) 13
15(GfxIterationData): TypeStruct 12 14 10(int)
16: TypeRuntimeArray 15(GfxIterationData)
17(bIterData): TypeStruct 16
18: TypePointer Uniform 17(bIterData)
19(bIterData): 18(ptr) Variable Uniform
4(main): 2 Function None 3
5: Label
8: 2 FunctionCall 6(@main()
Return
FunctionEnd
6(@main(): 2 Function None 3
7: Label
Return
FunctionEnd

13
Test/hlsl.buffer-offsets.comp Normal file
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@ -0,0 +1,13 @@
// See https://github.com/KhronosGroup/glslang/issues/3668
struct GfxIterationData {
float mIntegrationTrafo[24];
float mWind[3];
uint mIsTurning;
};
StructuredBuffer<GfxIterationData> bIterData : register(t2);
void main()
{
}

1
gtests/Hlsl.FromFile.cpp
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@ -170,6 +170,7 @@ INSTANTIATE_TEST_SUITE_P(
{"hlsl.basic.geom", "main"},
{"hlsl.boolConv.vert", "main"},
{"hlsl.buffer.frag", "PixelShaderFunction"},
{"hlsl.buffer-offsets.comp", "main"},
{"hlsl.calculatelod.dx10.frag", "main"},
{"hlsl.calculatelodunclamped.dx10.frag", "main"},
{"hlsl.cast.frag", "PixelShaderFunction"},