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Fix --hlsl-dx-position-w to work for SV_Position embedded in struct

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Fixes #2244
This commit is contained in:
Greg Fischer 2021-12-07 14:33:09 -07:00
parent ec5ea2d6cb
commit fbb39aa461
5 changed files with 387 additions and 0 deletions
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305
Test/baseResults/hlsl.w-recip2.frag.out Normal file
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@ -0,0 +1,305 @@
hlsl.w-recip2.frag
Shader version: 500
gl_FragCoord origin is upper left
0:? Sequence
0:13 Function Definition: @main(struct-VSOutput-vf4-vf3-vf3-vf21; ( temp 4-component vector of float)
0:13 Function Parameters:
0:13 'VSOut' ( in structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:? Sequence
0:14 Test condition and select ( temp void)
0:14 Condition
0:14 Compare Less Than ( temp bool)
0:14 direct index ( temp float)
0:14 PositionPS: direct index for structure ( temp 4-component vector of float)
0:14 'VSOut' ( in structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:14 Constant:
0:14 0 (const int)
0:14 Constant:
0:14 0 (const int)
0:14 Constant:
0:14 400.000000
0:14 true case
0:15 Branch: Return with expression
0:15 AmbientColor: direct index for structure ( uniform 4-component vector of float)
0:15 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float AmbientColor, uniform 4-component vector of float AmbientColor2})
0:15 Constant:
0:15 0 (const uint)
0:14 false case
0:17 Branch: Return with expression
0:17 AmbientColor2: direct index for structure ( uniform 4-component vector of float)
0:17 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float AmbientColor, uniform 4-component vector of float AmbientColor2})
0:17 Constant:
0:17 1 (const uint)
0:13 Function Definition: main( ( temp void)
0:13 Function Parameters:
0:? Sequence
0:13 Sequence
0:13 Sequence
0:13 move second child to first child ( temp 4-component vector of float)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:? 'VSOut.PositionPS' ( in 4-component vector of float FragCoord)
0:13 move second child to first child ( temp float)
0:13 direct index ( in float FragCoord)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:13 Constant:
0:13 3 (const int)
0:13 divide ( temp float)
0:13 Constant:
0:13 1.000000
0:13 direct index ( in float FragCoord)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:13 Constant:
0:13 3 (const int)
0:13 move second child to first child ( temp 4-component vector of float)
0:13 PositionPS: direct index for structure ( temp 4-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 0 (const int)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:13 move second child to first child ( temp 3-component vector of float)
0:13 PosInLightViewSpace: direct index for structure ( temp 3-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 1 (const int)
0:? 'VSOut.PosInLightViewSpace' (layout( location=0) in 3-component vector of float)
0:13 move second child to first child ( temp 3-component vector of float)
0:13 NormalWS: direct index for structure ( temp 3-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 2 (const int)
0:? 'VSOut.NormalWS' (layout( location=1) in 3-component vector of float)
0:13 move second child to first child ( temp 2-component vector of float)
0:13 TexCoord: direct index for structure ( temp 2-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 3 (const int)
0:? 'VSOut.TexCoord' (layout( location=2) in 2-component vector of float)
0:13 move second child to first child ( temp 4-component vector of float)
0:? '@entryPointOutput' (layout( location=0) out 4-component vector of float)
0:13 Function Call: @main(struct-VSOutput-vf4-vf3-vf3-vf21; ( temp 4-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:? Linker Objects
0:? 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float AmbientColor, uniform 4-component vector of float AmbientColor2})
0:? '@entryPointOutput' (layout( location=0) out 4-component vector of float)
0:? 'VSOut.PositionPS' ( in 4-component vector of float FragCoord)
0:? 'VSOut.PosInLightViewSpace' (layout( location=0) in 3-component vector of float)
0:? 'VSOut.NormalWS' (layout( location=1) in 3-component vector of float)
0:? 'VSOut.TexCoord' (layout( location=2) in 2-component vector of float)
Linked fragment stage:
Shader version: 500
gl_FragCoord origin is upper left
0:? Sequence
0:13 Function Definition: @main(struct-VSOutput-vf4-vf3-vf3-vf21; ( temp 4-component vector of float)
0:13 Function Parameters:
0:13 'VSOut' ( in structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:? Sequence
0:14 Test condition and select ( temp void)
0:14 Condition
0:14 Compare Less Than ( temp bool)
0:14 direct index ( temp float)
0:14 PositionPS: direct index for structure ( temp 4-component vector of float)
0:14 'VSOut' ( in structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:14 Constant:
0:14 0 (const int)
0:14 Constant:
0:14 0 (const int)
0:14 Constant:
0:14 400.000000
0:14 true case
0:15 Branch: Return with expression
0:15 AmbientColor: direct index for structure ( uniform 4-component vector of float)
0:15 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float AmbientColor, uniform 4-component vector of float AmbientColor2})
0:15 Constant:
0:15 0 (const uint)
0:14 false case
0:17 Branch: Return with expression
0:17 AmbientColor2: direct index for structure ( uniform 4-component vector of float)
0:17 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float AmbientColor, uniform 4-component vector of float AmbientColor2})
0:17 Constant:
0:17 1 (const uint)
0:13 Function Definition: main( ( temp void)
0:13 Function Parameters:
0:? Sequence
0:13 Sequence
0:13 Sequence
0:13 move second child to first child ( temp 4-component vector of float)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:? 'VSOut.PositionPS' ( in 4-component vector of float FragCoord)
0:13 move second child to first child ( temp float)
0:13 direct index ( in float FragCoord)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:13 Constant:
0:13 3 (const int)
0:13 divide ( temp float)
0:13 Constant:
0:13 1.000000
0:13 direct index ( in float FragCoord)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:13 Constant:
0:13 3 (const int)
0:13 move second child to first child ( temp 4-component vector of float)
0:13 PositionPS: direct index for structure ( temp 4-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 0 (const int)
0:13 '@fragcoord' ( temp 4-component vector of float)
0:13 move second child to first child ( temp 3-component vector of float)
0:13 PosInLightViewSpace: direct index for structure ( temp 3-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 1 (const int)
0:? 'VSOut.PosInLightViewSpace' (layout( location=0) in 3-component vector of float)
0:13 move second child to first child ( temp 3-component vector of float)
0:13 NormalWS: direct index for structure ( temp 3-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 2 (const int)
0:? 'VSOut.NormalWS' (layout( location=1) in 3-component vector of float)
0:13 move second child to first child ( temp 2-component vector of float)
0:13 TexCoord: direct index for structure ( temp 2-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:13 Constant:
0:13 3 (const int)
0:? 'VSOut.TexCoord' (layout( location=2) in 2-component vector of float)
0:13 move second child to first child ( temp 4-component vector of float)
0:? '@entryPointOutput' (layout( location=0) out 4-component vector of float)
0:13 Function Call: @main(struct-VSOutput-vf4-vf3-vf3-vf21; ( temp 4-component vector of float)
0:? 'VSOut' ( temp structure{ temp 4-component vector of float PositionPS, temp 3-component vector of float PosInLightViewSpace, temp 3-component vector of float NormalWS, temp 2-component vector of float TexCoord})
0:? Linker Objects
0:? 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float AmbientColor, uniform 4-component vector of float AmbientColor2})
0:? '@entryPointOutput' (layout( location=0) out 4-component vector of float)
0:? 'VSOut.PositionPS' ( in 4-component vector of float FragCoord)
0:? 'VSOut.PosInLightViewSpace' (layout( location=0) in 3-component vector of float)
0:? 'VSOut.NormalWS' (layout( location=1) in 3-component vector of float)
0:? 'VSOut.TexCoord' (layout( location=2) in 2-component vector of float)
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 75
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 4 "main" 44 56 61 66 71
ExecutionMode 4 OriginUpperLeft
Source HLSL 500
Name 4 "main"
Name 10 "VSOutput"
MemberName 10(VSOutput) 0 "PositionPS"
MemberName 10(VSOutput) 1 "PosInLightViewSpace"
MemberName 10(VSOutput) 2 "NormalWS"
MemberName 10(VSOutput) 3 "TexCoord"
Name 14 "@main(struct-VSOutput-vf4-vf3-vf3-vf21;"
Name 13 "VSOut"
Name 28 "$Global"
MemberName 28($Global) 0 "AmbientColor"
MemberName 28($Global) 1 "AmbientColor2"
Name 30 ""
Name 42 "@fragcoord"
Name 44 "VSOut.PositionPS"
Name 52 "VSOut"
Name 56 "VSOut.PosInLightViewSpace"
Name 61 "VSOut.NormalWS"
Name 66 "VSOut.TexCoord"
Name 71 "@entryPointOutput"
Name 72 "param"
MemberDecorate 28($Global) 0 Offset 0
MemberDecorate 28($Global) 1 Offset 16
Decorate 28($Global) Block
Decorate 30 DescriptorSet 0
Decorate 30 Binding 0
Decorate 44(VSOut.PositionPS) BuiltIn FragCoord
Decorate 56(VSOut.PosInLightViewSpace) Location 0
Decorate 61(VSOut.NormalWS) Location 1
Decorate 66(VSOut.TexCoord) Location 2
Decorate 71(@entryPointOutput) Location 0
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeVector 6(float) 4
8: TypeVector 6(float) 3
9: TypeVector 6(float) 2
10(VSOutput): TypeStruct 7(fvec4) 8(fvec3) 8(fvec3) 9(fvec2)
11: TypePointer Function 10(VSOutput)
12: TypeFunction 7(fvec4) 11(ptr)
16: TypeInt 32 1
17: 16(int) Constant 0
18: TypeInt 32 0
19: 18(int) Constant 0
20: TypePointer Function 6(float)
23: 6(float) Constant 1137180672
24: TypeBool
28($Global): TypeStruct 7(fvec4) 7(fvec4)
29: TypePointer Uniform 28($Global)
30: 29(ptr) Variable Uniform
31: TypePointer Uniform 7(fvec4)
36: 16(int) Constant 1
41: TypePointer Function 7(fvec4)
43: TypePointer Input 7(fvec4)
44(VSOut.PositionPS): 43(ptr) Variable Input
46: 6(float) Constant 1065353216
47: 18(int) Constant 3
55: TypePointer Input 8(fvec3)
56(VSOut.PosInLightViewSpace): 55(ptr) Variable Input
58: TypePointer Function 8(fvec3)
60: 16(int) Constant 2
61(VSOut.NormalWS): 55(ptr) Variable Input
64: 16(int) Constant 3
65: TypePointer Input 9(fvec2)
66(VSOut.TexCoord): 65(ptr) Variable Input
68: TypePointer Function 9(fvec2)
70: TypePointer Output 7(fvec4)
71(@entryPointOutput): 70(ptr) Variable Output
4(main): 2 Function None 3
5: Label
42(@fragcoord): 41(ptr) Variable Function
52(VSOut): 11(ptr) Variable Function
72(param): 11(ptr) Variable Function
45: 7(fvec4) Load 44(VSOut.PositionPS)
Store 42(@fragcoord) 45
48: 20(ptr) AccessChain 42(@fragcoord) 47
49: 6(float) Load 48
50: 6(float) FDiv 46 49
51: 20(ptr) AccessChain 42(@fragcoord) 47
Store 51 50
53: 7(fvec4) Load 42(@fragcoord)
54: 41(ptr) AccessChain 52(VSOut) 17
Store 54 53
57: 8(fvec3) Load 56(VSOut.PosInLightViewSpace)
59: 58(ptr) AccessChain 52(VSOut) 36
Store 59 57
62: 8(fvec3) Load 61(VSOut.NormalWS)
63: 58(ptr) AccessChain 52(VSOut) 60
Store 63 62
67: 9(fvec2) Load 66(VSOut.TexCoord)
69: 68(ptr) AccessChain 52(VSOut) 64
Store 69 67
73:10(VSOutput) Load 52(VSOut)
Store 72(param) 73
74: 7(fvec4) FunctionCall 14(@main(struct-VSOutput-vf4-vf3-vf3-vf21;) 72(param)
Store 71(@entryPointOutput) 74
Return
FunctionEnd
14(@main(struct-VSOutput-vf4-vf3-vf3-vf21;): 7(fvec4) Function None 12
13(VSOut): 11(ptr) FunctionParameter
15: Label
21: 20(ptr) AccessChain 13(VSOut) 17 19
22: 6(float) Load 21
25: 24(bool) FOrdLessThan 22 23
SelectionMerge 27 None
BranchConditional 25 26 35
26: Label
32: 31(ptr) AccessChain 30 17
33: 7(fvec4) Load 32
ReturnValue 33
35: Label
37: 31(ptr) AccessChain 30 36
38: 7(fvec4) Load 37
ReturnValue 38
27: Label
Unreachable
FunctionEnd

19
Test/hlsl.w-recip2.frag Normal file
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@ -0,0 +1,19 @@
struct VSOutput
{
float4 PositionPS : SV_Position;
float3 PosInLightViewSpace : LIGHT_SPACE_POS;
float3 NormalWS : NORMALWS;
float2 TexCoord : TEXCOORD;
};
float4 AmbientColor = float4(1, 0.5, 0, 1);
float4 AmbientColor2 = float4(0.5, 1, 0, 0);
float4 main(VSOutput VSOut) : SV_TARGET
{
if (VSOut.PositionPS.x < 400)
return AmbientColor;
else
return AmbientColor2;
}

2
Test/runtests
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@ -260,6 +260,8 @@ diff -b $BASEDIR/hlsl.y-negate-3.vert.out $TARGETDIR/hlsl.y-negate-3.vert.out ||
echo "Testing position W reciprocal" echo "Testing position W reciprocal"
run -H -e main -V -D -Od -H -i --hlsl-dx-position-w hlsl.w-recip.frag > $TARGETDIR/hlsl.w-recip.frag.out run -H -e main -V -D -Od -H -i --hlsl-dx-position-w hlsl.w-recip.frag > $TARGETDIR/hlsl.w-recip.frag.out
diff -b $BASEDIR/hlsl.w-recip.frag.out $TARGETDIR/hlsl.w-recip.frag.out || HASERROR=1 diff -b $BASEDIR/hlsl.w-recip.frag.out $TARGETDIR/hlsl.w-recip.frag.out || HASERROR=1
run -H -e main -V -D -Od -H -i --hlsl-dx-position-w hlsl.w-recip2.frag > $TARGETDIR/hlsl.w-recip2.frag.out
diff -b $BASEDIR/hlsl.w-recip2.frag.out $TARGETDIR/hlsl.w-recip2.frag.out || HASERROR=1
# #
# Testing hlsl_functionality1 # Testing hlsl_functionality1

60
glslang/HLSL/hlslParseHelper.cpp
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@ -2465,6 +2465,62 @@ void HlslParseContext::handleFunctionArgument(TFunction* function,
arguments = newArg; arguments = newArg;
} }
// FragCoord may require special loading: we can optionally reciprocate W.
TIntermTyped* HlslParseContext::assignFromFragCoord(const TSourceLoc& loc, TOperator op,
TIntermTyped* left, TIntermTyped* right)
{
// If we are not asked for reciprocal W, use a plain old assign.
if (!intermediate.getDxPositionW())
return intermediate.addAssign(op, left, right, loc);
// If we get here, we should reciprocate W.
TIntermAggregate* assignList = nullptr;
// If this is a complex rvalue, we don't want to dereference it many times. Create a temporary.
TVariable* rhsTempVar = nullptr;
rhsTempVar = makeInternalVariable("@fragcoord", right->getType());
rhsTempVar->getWritableType().getQualifier().makeTemporary();
{
TIntermTyped* rhsTempSym = intermediate.addSymbol(*rhsTempVar, loc);
assignList = intermediate.growAggregate(assignList,
intermediate.addAssign(EOpAssign, rhsTempSym, right, loc), loc);
}
// tmp.w = 1.0 / tmp.w
{
const int W = 3;
TIntermTyped* tempSymL = intermediate.addSymbol(*rhsTempVar, loc);
TIntermTyped* tempSymR = intermediate.addSymbol(*rhsTempVar, loc);
TIntermTyped* index = intermediate.addConstantUnion(W, loc);
TIntermTyped* lhsElement = intermediate.addIndex(EOpIndexDirect, tempSymL, index, loc);
TIntermTyped* rhsElement = intermediate.addIndex(EOpIndexDirect, tempSymR, index, loc);
const TType derefType(right->getType(), 0);
lhsElement->setType(derefType);
rhsElement->setType(derefType);
auto one = intermediate.addConstantUnion(1.0, EbtFloat, loc);
auto recip_w = intermediate.addBinaryMath(EOpDiv, one, rhsElement, loc);
assignList = intermediate.growAggregate(assignList, intermediate.addAssign(EOpAssign, lhsElement, recip_w, loc));
}
// Assign the rhs temp (now with W reciprocal) to the final output
{
TIntermTyped* rhsTempSym = intermediate.addSymbol(*rhsTempVar, loc);
assignList = intermediate.growAggregate(assignList, intermediate.addAssign(op, left, rhsTempSym, loc));
}
assert(assignList != nullptr);
assignList->setOperator(EOpSequence);
return assignList;
}
// Position may require special handling: we can optionally invert Y. // Position may require special handling: we can optionally invert Y.
// See: https://github.com/KhronosGroup/glslang/issues/1173 // See: https://github.com/KhronosGroup/glslang/issues/1173
// https://github.com/KhronosGroup/glslang/issues/494 // https://github.com/KhronosGroup/glslang/issues/494
@ -3084,6 +3140,10 @@ TIntermTyped* HlslParseContext::handleAssign(const TSourceLoc& loc, TOperator op
subSplitLeft, subSplitRight); subSplitLeft, subSplitRight);
assignList = intermediate.growAggregate(assignList, clipCullAssign, loc); assignList = intermediate.growAggregate(assignList, clipCullAssign, loc);
} else if (subSplitRight->getType().getQualifier().builtIn == EbvFragCoord) {
// FragCoord can require special handling: see comment above assignFromFragCoord
TIntermTyped* fragCoordAssign = assignFromFragCoord(loc, op, subSplitLeft, subSplitRight);
assignList = intermediate.growAggregate(assignList, fragCoordAssign, loc);
} else if (assignsClipPos(subSplitLeft)) { } else if (assignsClipPos(subSplitLeft)) {
// Position can require special handling: see comment above assignPosition // Position can require special handling: see comment above assignPosition
TIntermTyped* positionAssign = assignPosition(loc, op, subSplitLeft, subSplitRight); TIntermTyped* positionAssign = assignPosition(loc, op, subSplitLeft, subSplitRight);

1
glslang/HLSL/hlslParseHelper.h
View File

@ -94,6 +94,7 @@ public:
TIntermTyped* handleFunctionCall(const TSourceLoc&, TFunction*, TIntermTyped*); TIntermTyped* handleFunctionCall(const TSourceLoc&, TFunction*, TIntermTyped*);
TIntermAggregate* assignClipCullDistance(const TSourceLoc&, TOperator, int semanticId, TIntermTyped* left, TIntermTyped* right); TIntermAggregate* assignClipCullDistance(const TSourceLoc&, TOperator, int semanticId, TIntermTyped* left, TIntermTyped* right);
TIntermTyped* assignPosition(const TSourceLoc&, TOperator, TIntermTyped* left, TIntermTyped* right); TIntermTyped* assignPosition(const TSourceLoc&, TOperator, TIntermTyped* left, TIntermTyped* right);
TIntermTyped* assignFromFragCoord(const TSourceLoc&, TOperator, TIntermTyped* left, TIntermTyped* right);
void decomposeIntrinsic(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); void decomposeIntrinsic(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments);
void decomposeSampleMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); void decomposeSampleMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments);
void decomposeStructBufferMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); void decomposeStructBufferMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments);