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Fix defects in uniform array flattening

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Fix for two defects as follows:

- The IO mapping traverser was not setting inVisit, and would skip some AST nodes.
  Depending on the order of nodes, this could have prevented the binding from
  showing up in the generated SPIR-V.

- If a uniform array was flattened, each of the flattened scalars from the array
  is still a (now-scalar) uniform.  It was being converted to a temporary.
This commit is contained in:
steve-lunarg 2016-09-22 14:35:23 -06:00
parent 02df206c9e
commit cf43e66125
8 changed files with 109 additions and 19 deletions
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10
Test/baseResults/hlsl.array.flatten.frag.out
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@ -8,8 +8,8 @@ gl_FragCoord origin is upper left
0:18 Branch: Return with expression
0:18 texture (global 4-component vector of float)
0:18 Construct combined texture-sampler (temp sampler1D)
0:? 'g_tex[1]' (temp texture1D)
0:? 'g_samp[1]' (temp sampler)
0:? 'g_tex[1]' (uniform texture1D)
0:? 'g_samp[1]' (uniform sampler)
0:18 Constant:
0:18 0.200000
0:22 Function Definition: TestFn2(t11[3];p1[3]; (global 4-component vector of float)
@ -197,8 +197,8 @@ gl_FragCoord origin is upper left
0:18 Branch: Return with expression
0:18 texture (global 4-component vector of float)
0:18 Construct combined texture-sampler (temp sampler1D)
0:? 'g_tex[1]' (temp texture1D)
0:? 'g_samp[1]' (temp sampler)
0:? 'g_tex[1]' (uniform texture1D)
0:? 'g_samp[1]' (uniform sampler)
0:18 Constant:
0:18 0.200000
0:22 Function Definition: TestFn2(t11[3];p1[3]; (global 4-component vector of float)
@ -419,6 +419,8 @@ gl_FragCoord origin is upper left
Name 125 "g_mats_explicit[1]"
Name 126 "g_mats_explicit[2]"
Name 127 "g_mats_explicit[3]"
Decorate 36(g_tex[1]) DescriptorSet 0
Decorate 39(g_samp[1]) DescriptorSet 0
Decorate 57(g_samp[0]) DescriptorSet 0
Decorate 62(g_samp[2]) DescriptorSet 0
Decorate 66(g_tex[0]) DescriptorSet 0

57
Test/baseResults/spv.register.autoassign-2.frag.out Normal file
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@ -0,0 +1,57 @@
spv.register.autoassign-2.frag
Linked fragment stage:
// Module Version 10000
// Generated by (magic number): 80001
// Id's are bound by 30
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 4 "main" 9
ExecutionMode 4 OriginUpperLeft
Name 4 "main"
Name 9 "Color"
Name 12 "g_tScene[0]"
Name 16 "g_tSamp"
Name 24 "g_tScene[1]"
Decorate 9(Color) Location 0
Decorate 12(g_tScene[0]) DescriptorSet 0
Decorate 12(g_tScene[0]) Binding 10
Decorate 16(g_tSamp) DescriptorSet 0
Decorate 16(g_tSamp) Binding 5
Decorate 24(g_tScene[1]) DescriptorSet 0
Decorate 24(g_tScene[1]) Binding 11
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeVector 6(float) 4
8: TypePointer Output 7(fvec4)
9(Color): 8(ptr) Variable Output
10: TypeImage 6(float) 2D sampled format:Unknown
11: TypePointer UniformConstant 10
12(g_tScene[0]): 11(ptr) Variable UniformConstant
14: TypeSampler
15: TypePointer UniformConstant 14
16(g_tSamp): 15(ptr) Variable UniformConstant
18: TypeSampledImage 10
20: TypeVector 6(float) 2
21: 6(float) Constant 1050253722
22: 20(fvec2) ConstantComposite 21 21
24(g_tScene[1]): 11(ptr) Variable UniformConstant
4(main): 2 Function None 3
5: Label
13: 10 Load 12(g_tScene[0])
17: 14 Load 16(g_tSamp)
19: 18 SampledImage 13 17
23: 7(fvec4) ImageSampleImplicitLod 19 22
25: 10 Load 24(g_tScene[1])
26: 14 Load 16(g_tSamp)
27: 18 SampledImage 25 26
28: 7(fvec4) ImageSampleImplicitLod 27 22
29: 7(fvec4) FAdd 23 28
Store 9(Color) 29
Return
FunctionEnd

15
Test/spv.register.autoassign-2.frag Normal file
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@ -0,0 +1,15 @@
SamplerState g_tSamp : register(s0);
Texture2D g_tScene[2] : register(t0);
struct PS_OUTPUT
{
float4 Color : SV_Target0;
};
void main(out PS_OUTPUT psout)
{
psout.Color = g_tScene[0].Sample(g_tSamp, 0.3) +
g_tScene[1].Sample(g_tSamp, 0.3);
}

4
glslang/MachineIndependent/LiveTraverser.h
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@ -56,7 +56,9 @@ namespace glslang {
class TLiveTraverser : public TIntermTraverser {
public:
TLiveTraverser(const TIntermediate& i, bool traverseAll = false) :
TLiveTraverser(const TIntermediate& i, bool traverseAll = false,
bool preVisit = true, bool inVisit = false, bool postVisit = false) :
TIntermTraverser(preVisit, inVisit, postVisit),
intermediate(i), traverseAll(traverseAll)
{ }

2
glslang/MachineIndependent/iomapper.cpp
View File

@ -74,7 +74,7 @@ class TBindingTraverser : public TLiveTraverser {
public:
TBindingTraverser(const TIntermediate& i, TBindingMap& bindingMap, TUsedBindings& usedBindings,
bool traverseDeadCode = false) :
TLiveTraverser(i, traverseDeadCode),
TLiveTraverser(i, traverseDeadCode, true, true, false),
bindingMap(bindingMap),
usedBindings(usedBindings)
{ }

9
gtests/Spv.FromFile.cpp
View File

@ -48,6 +48,7 @@ struct IoMapData {
int baseTextureBinding;
int baseUboBinding;
bool autoMapBindings;
bool flattenUniforms;
};
std::string FileNameAsCustomTestSuffixIoMap(
@ -119,7 +120,8 @@ TEST_P(HlslSemantics, FromFile)
GetParam().baseSamplerBinding,
GetParam().baseTextureBinding,
GetParam().baseUboBinding,
GetParam().autoMapBindings);
GetParam().autoMapBindings,
GetParam().flattenUniforms);
}
// clang-format off
@ -251,8 +253,9 @@ INSTANTIATE_TEST_CASE_P(
INSTANTIATE_TEST_CASE_P(
Hlsl, HlslSemantics,
::testing::ValuesIn(std::vector<IoMapData>{
{ "spv.register.autoassign.frag", "main_ep", 5, 10, 15, true },
{ "spv.register.noautoassign.frag", "main_ep", 5, 10, 15, false },
{ "spv.register.autoassign.frag", "main_ep", 5, 10, 15, true, false },
{ "spv.register.noautoassign.frag", "main_ep", 5, 10, 15, false, false },
{ "spv.register.autoassign-2.frag", "main", 5, 10, 15, true, true },
}),
FileNameAsCustomTestSuffixIoMap
);

10
gtests/TestFixture.h
View File

@ -248,7 +248,8 @@ public:
int baseSamplerBinding,
int baseTextureBinding,
int baseUboBinding,
bool autoMapBindings)
bool autoMapBindings,
bool flattenUniformArrays)
{
const EShLanguage kind = GetShaderStage(GetSuffix(shaderName));
@ -257,6 +258,7 @@ public:
shader.setShiftTextureBinding(baseTextureBinding);
shader.setShiftUboBinding(baseUboBinding);
shader.setAutoMapBindings(autoMapBindings);
shader.setFlattenUniformArrays(flattenUniformArrays);
bool success = compile(&shader, code, entryPointName, controls);
@ -433,7 +435,8 @@ public:
int baseSamplerBinding,
int baseTextureBinding,
int baseUboBinding,
bool autoMapBindings)
bool autoMapBindings,
bool flattenUniformArrays)
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
@ -446,7 +449,8 @@ public:
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = compileLinkIoMap(testName, input, entryPointName, controls,
baseSamplerBinding, baseTextureBinding, baseUboBinding,
autoMapBindings);
autoMapBindings,
flattenUniformArrays);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;

21
hlsl/hlslParseHelper.cpp
View File

@ -383,6 +383,7 @@ TIntermTyped* HlslParseContext::handleBracketDereference(const TSourceLoc& loc,
{
TIntermTyped* result = nullptr;
bool flattened = false;
int indexValue = 0;
if (index->getQualifier().storage == EvqConst) {
indexValue = index->getAsConstantUnion()->getConstArray()[0].getIConst();
@ -408,6 +409,7 @@ TIntermTyped* HlslParseContext::handleBracketDereference(const TSourceLoc& loc,
error(loc, "Invalid variable index to flattened uniform array", base->getAsSymbolNode()->getName().c_str(), "");
result = flattenAccess(base, indexValue);
flattened = (result != base);
} else {
if (index->getQualifier().storage == EvqConst) {
if (base->getType().isImplicitlySizedArray())
@ -423,13 +425,18 @@ TIntermTyped* HlslParseContext::handleBracketDereference(const TSourceLoc& loc,
// Insert dummy error-recovery result
result = intermediate.addConstantUnion(0.0, EbtFloat, loc);
} else {
// Insert valid dereferenced result
TType newType(base->getType(), 0); // dereferenced type
if (base->getType().getQualifier().storage == EvqConst && index->getQualifier().storage == EvqConst)
newType.getQualifier().storage = EvqConst;
else
newType.getQualifier().storage = EvqTemporary;
result->setType(newType);
// If the array reference was flattened, it has the correct type. E.g, if it was
// a uniform array, it was flattened INTO a set of scalar uniforms, not scalar temps.
// In that case, we preserve the qualifiers.
if (!flattened) {
// Insert valid dereferenced result
TType newType(base->getType(), 0); // dereferenced type
if (base->getType().getQualifier().storage == EvqConst && index->getQualifier().storage == EvqConst)
newType.getQualifier().storage = EvqConst;
else
newType.getQualifier().storage = EvqTemporary;
result->setType(newType);
}
}
return result;