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Don't use roundEven() to implement round() in DX9 compatibility mode

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This commit is contained in:
rdb 2020-11-05 17:53:38 +01:00
parent a5be11bd8b
commit 589aaff11c
7 changed files with 145 additions and 1 deletions
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60
Test/baseResults/hlsl.round.dx10.frag.out Normal file
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@ -0,0 +1,60 @@
hlsl.round.dx10.frag
Shader version: 500
gl_FragCoord origin is upper left
0:? Sequence
0:2 Function Definition: PixelShaderFunction(vf4; ( temp 4-component vector of float)
0:2 Function Parameters:
0:2 'input' ( in 4-component vector of float)
0:? Sequence
0:3 Branch: Return with expression
0:3 roundEven ( temp 4-component vector of float)
0:3 'input' ( in 4-component vector of float)
0:? Linker Objects
Linked fragment stage:
WARNING: Linking fragment stage: Entry point not found
Shader version: 500
gl_FragCoord origin is upper left
0:? Sequence
0:2 Function Definition: PixelShaderFunction(vf4; ( temp 4-component vector of float)
0:2 Function Parameters:
0:2 'input' ( in 4-component vector of float)
0:? Sequence
0:3 Branch: Return with expression
0:3 roundEven ( temp 4-component vector of float)
0:3 'input' ( in 4-component vector of float)
0:? Linker Objects
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 17
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 4 "main"
ExecutionMode 4 OriginUpperLeft
Source HLSL 500
Name 4 "main"
Name 11 "PixelShaderFunction(vf4;"
Name 10 "input"
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeVector 6(float) 4
8: TypePointer Function 7(fvec4)
9: TypeFunction 7(fvec4) 8(ptr)
4(main): 2 Function None 3
5: Label
Return
FunctionEnd
11(PixelShaderFunction(vf4;): 7(fvec4) Function None 9
10(input): 8(ptr) FunctionParameter
12: Label
13: 7(fvec4) Load 10(input)
14: 7(fvec4) ExtInst 1(GLSL.std.450) 2(RoundEven) 13
ReturnValue 14
FunctionEnd

70
Test/baseResults/hlsl.round.dx9.frag.out Normal file
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@ -0,0 +1,70 @@
hlsl.round.dx9.frag
Shader version: 500
gl_FragCoord origin is upper left
0:? Sequence
0:2 Function Definition: PixelShaderFunction(vf4; ( temp 4-component vector of float)
0:2 Function Parameters:
0:2 'input' ( in 4-component vector of float)
0:? Sequence
0:3 Branch: Return with expression
0:3 round ( temp 4-component vector of float)
0:3 'input' ( in 4-component vector of float)
0:? Linker Objects
Linked fragment stage:
WARNING: Linking fragment stage: Entry point not found
Shader version: 500
gl_FragCoord origin is upper left
0:? Sequence
0:2 Function Definition: PixelShaderFunction(vf4; ( temp 4-component vector of float)
0:2 Function Parameters:
0:2 'input' ( in 4-component vector of float)
0:? Sequence
0:3 Branch: Return with expression
0:3 round ( temp 4-component vector of float)
0:3 'input' ( in 4-component vector of float)
0:? Linker Objects
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 18
Capability Shader
2: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 5 "main"
ExecutionMode 5 OriginUpperLeft
1: String ""
Source HLSL 500 1 "// OpModuleProcessed auto-map-locations
// OpModuleProcessed auto-map-bindings
// OpModuleProcessed entry-point main
// OpModuleProcessed client vulkan100
// OpModuleProcessed target-env vulkan1.0
// OpModuleProcessed keep-uncalled
// OpModuleProcessed hlsl-offsets
#line 1
"
Name 5 "main"
Name 12 "PixelShaderFunction(vf4;"
Name 11 "input"
3: TypeVoid
4: TypeFunction 3
7: TypeFloat 32
8: TypeVector 7(float) 4
9: TypePointer Function 8(fvec4)
10: TypeFunction 8(fvec4) 9(ptr)
5(main): 3 Function None 4
6: Label
Return
FunctionEnd
12(PixelShaderFunction(vf4;): 8(fvec4) Function None 10
11(input): 9(ptr) FunctionParameter
13: Label
Line 1 3 0
14: 8(fvec4) Load 11(input)
15: 8(fvec4) ExtInst 2(GLSL.std.450) 1(Round) 14
ReturnValue 15
FunctionEnd

4
Test/hlsl.round.dx10.frag Normal file
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@ -0,0 +1,4 @@
float4 PixelShaderFunction(float4 input) : COLOR0
{
return round(input);
}

4
Test/hlsl.round.dx9.frag Normal file
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@ -0,0 +1,4 @@
float4 PixelShaderFunction(float4 input) : COLOR0
{
return round(input);
}

4
glslang/HLSL/hlslParseHelper.cpp
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@ -5492,6 +5492,10 @@ TIntermTyped* HlslParseContext::handleFunctionCall(const TSourceLoc& loc, TFunct
op = fnCandidate->getBuiltInOp();
if (builtIn && op != EOpNull) {
// SM 4.0 and above guarantees roundEven semantics for round()
if (!hlslDX9Compatible() && op == EOpRound)
op = EOpRoundEven;
// A function call mapped to a built-in operation.
result = intermediate.addBuiltInFunctionCall(loc, op, fnCandidate->getParamCount() == 1, arguments,
fnCandidate->getType());

2
glslang/HLSL/hlslParseables.cpp
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@ -1123,7 +1123,7 @@ void TBuiltInParseablesHlsl::identifyBuiltIns(int /*version*/, EProfile /*profil
symbolTable.relateToOperator("reflect", EOpReflect);
symbolTable.relateToOperator("refract", EOpRefract);
symbolTable.relateToOperator("reversebits", EOpBitFieldReverse);
symbolTable.relateToOperator("round", EOpRoundEven);
symbolTable.relateToOperator("round", EOpRound);
symbolTable.relateToOperator("rsqrt", EOpInverseSqrt);
symbolTable.relateToOperator("saturate", EOpSaturate);
symbolTable.relateToOperator("sign", EOpSign);

2
gtests/Hlsl.FromFile.cpp
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@ -313,6 +313,7 @@ INSTANTIATE_TEST_SUITE_P(
{"hlsl.promote.binary.frag", "main"},
{"hlsl.promote.vec1.frag", "main"},
{"hlsl.promotions.frag", "main"},
{"hlsl.round.dx10.frag", "main"},
{"hlsl.rw.atomics.frag", "main"},
{"hlsl.rw.bracket.frag", "main"},
{"hlsl.rw.register.frag", "main"},
@ -490,6 +491,7 @@ INSTANTIATE_TEST_SUITE_P(
INSTANTIATE_TEST_SUITE_P(
ToSpirv, HlslDX9CompatibleTest,
::testing::ValuesIn(std::vector<FileNameEntryPointPair>{
{"hlsl.round.dx9.frag", "main"},
{"hlsl.sample.dx9.frag", "main"},
{"hlsl.sample.dx9.vert", "main"},
}),