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SPV: Generalize multiple struct-type instances for interpolation/invariant qualifiers.

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This commit is contained in:
John Kessenich
2015-12-24 10:30:13 -07:00
parent 69d01eadd6
commit e0b6cad44f
4 changed files with 108 additions and 50 deletions
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108
SPIRV/GlslangToSpv.cpp
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@@ -91,7 +91,7 @@ protected:
spv::Id createSpvVariable(const glslang::TIntermSymbol*);
spv::Id getSampledType(const glslang::TSampler&);
spv::Id convertGlslangToSpvType(const glslang::TType& type);
spv::Id convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking, glslang::TLayoutMatrix);
spv::Id convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking, const glslang::TQualifier&);
glslang::TLayoutPacking getExplicitLayout(const glslang::TType& type) const;
int getArrayStride(const glslang::TType& arrayType, glslang::TLayoutPacking, glslang::TLayoutMatrix);
int getMatrixStride(const glslang::TType& matrixType, glslang::TLayoutPacking, glslang::TLayoutMatrix);
@@ -299,30 +299,30 @@ spv::Decoration TranslateLayoutDecoration(const glslang::TType& type, glslang::T
// Translate glslang type to SPIR-V interpolation decorations.
// Returns spv::Decoration(spv::BadValue) when no decoration
// should be applied.
spv::Decoration TranslateInterpolationDecoration(const glslang::TType& type)
spv::Decoration TranslateInterpolationDecoration(const glslang::TQualifier& qualifier)
{
if (type.getQualifier().smooth) {
if (qualifier.smooth) {
// Smooth decoration doesn't exist in SPIR-V 1.0
return (spv::Decoration)spv::BadValue;
}
if (type.getQualifier().nopersp)
if (qualifier.nopersp)
return spv::DecorationNoPerspective;
else if (type.getQualifier().patch)
else if (qualifier.patch)
return spv::DecorationPatch;
else if (type.getQualifier().flat)
else if (qualifier.flat)
return spv::DecorationFlat;
else if (type.getQualifier().centroid)
else if (qualifier.centroid)
return spv::DecorationCentroid;
else if (type.getQualifier().sample)
else if (qualifier.sample)
return spv::DecorationSample;
else
return (spv::Decoration)spv::BadValue;
}
// If glslang type is invaraiant, return SPIR-V invariant decoration.
spv::Decoration TranslateInvariantDecoration(const glslang::TType& type)
spv::Decoration TranslateInvariantDecoration(const glslang::TQualifier& qualifier)
{
if (type.getQualifier().invariant)
if (qualifier.invariant)
return spv::DecorationInvariant;
else
return (spv::Decoration)spv::BadValue;
@@ -420,6 +420,34 @@ spv::ImageFormat TranslateImageFormat(const glslang::TType& type)
}
}
void InheritQualifiers(glslang::TQualifier& child, const glslang::TQualifier& parent)
{
if (child.layoutMatrix == glslang::ElmNone)
child.layoutMatrix = parent.layoutMatrix;
if (parent.invariant)
child.invariant = true;
if (parent.nopersp)
child.nopersp = true;
if (parent.flat)
child.flat = true;
if (parent.centroid)
child.centroid = true;
if (parent.patch)
child.patch = true;
if (parent.sample)
child.sample = true;
}
bool HasNonLayoutQualifiers(const glslang::TQualifier& qualifier)
{
// This should list qualifiers that simultaneous satisify:
// - struct members can inherit from a struct declaration
// - effect decorations on the struct members (note smooth does not, and expecting something like volatile to effect the whole object)
// - are not part of the offset/st430/etc or row/column-major layout
return qualifier.invariant || qualifier.nopersp || qualifier.flat || qualifier.centroid || qualifier.patch || qualifier.sample;
}
//
// Implement the TGlslangToSpvTraverser class.
//
@@ -1467,14 +1495,14 @@ spv::Id TGlslangToSpvTraverser::getSampledType(const glslang::TSampler& sampler)
// layout state rooted from the top-level type.
spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type)
{
return convertGlslangToSpvType(type, getExplicitLayout(type), type.getQualifier().layoutMatrix);
return convertGlslangToSpvType(type, getExplicitLayout(type), type.getQualifier());
}
// Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
// explicitLayout can be kept the same throughout the heirarchical recursive walk.
spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking explicitLayout, const glslang::TQualifier& qualifier)
{
spv::Id spvType = 0;
spv::Id spvType = spv::NoResult;
switch (type.getBasicType()) {
case glslang::EbtVoid:
@@ -1503,13 +1531,13 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
case glslang::EbtSampler:
{
const glslang::TSampler& sampler = type.getSampler();
// an image is present, make its type
spvType = builder.makeImageType(getSampledType(sampler), TranslateDimensionality(sampler), sampler.shadow, sampler.arrayed, sampler.ms,
sampler.image ? 2 : 1, TranslateImageFormat(type));
// an image is present, make its type
spvType = builder.makeImageType(getSampledType(sampler), TranslateDimensionality(sampler), sampler.shadow, sampler.arrayed, sampler.ms,
sampler.image ? 2 : 1, TranslateImageFormat(type));
if (! sampler.image) {
spvType = builder.makeSampledImageType(spvType);
}
spvType = builder.makeSampledImageType(spvType);
}
}
break;
case glslang::EbtStruct:
case glslang::EbtBlock:
@@ -1517,8 +1545,12 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
// If we've seen this struct type, return it
const glslang::TTypeList* glslangStruct = type.getStruct();
std::vector<spv::Id> structFields;
spvType = structMap[explicitLayout][matrixLayout][glslangStruct];
if (spvType)
// Try to share structs for different layouts, but not yet for other
// kinds of qualification (primarily not yet including interpolant qualification).
if (! HasNonLayoutQualifiers(qualifier))
spvType = structMap[explicitLayout][qualifier.layoutMatrix][glslangStruct];
if (spvType != spv::NoResult)
break;
// else, we haven't seen it...
@@ -1536,16 +1568,17 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
} else {
if (type.getBasicType() == glslang::EbtBlock)
memberRemapper[glslangStruct][i] = i - memberDelta;
// modify just the children's view of matrix layout, if there is one for this member
glslang::TLayoutMatrix subMatrixLayout = glslangType.getQualifier().layoutMatrix;
structFields.push_back(convertGlslangToSpvType(glslangType, explicitLayout,
subMatrixLayout != glslang::ElmNone ? subMatrixLayout : matrixLayout));
// modify just this child's view of the qualifier
glslang::TQualifier subQualifier = glslangType.getQualifier();
InheritQualifiers(subQualifier, qualifier);
structFields.push_back(convertGlslangToSpvType(glslangType, explicitLayout, subQualifier));
}
}
// Make the SPIR-V type
spvType = builder.makeStructType(structFields, type.getTypeName().c_str());
structMap[explicitLayout][matrixLayout][glslangStruct] = spvType;
if (! HasNonLayoutQualifiers(qualifier))
structMap[explicitLayout][qualifier.layoutMatrix][glslangStruct] = spvType;
// Name and decorate the non-hidden members
int offset = -1;
@@ -1555,18 +1588,17 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
if (type.getBasicType() == glslang::EbtBlock)
member = memberRemapper[glslangStruct][i];
// modify just the children's view of matrix layout, if there is one for this member
glslang::TLayoutMatrix subMatrixLayout = glslangType.getQualifier().layoutMatrix;
if (subMatrixLayout == glslang::ElmNone)
subMatrixLayout = matrixLayout;
// modify just this child's view of the qualifier
glslang::TQualifier subQualifier = glslangType.getQualifier();
InheritQualifiers(subQualifier, qualifier);
// using -1 above to indicate a hidden member
if (member >= 0) {
builder.addMemberName(spvType, member, glslangType.getFieldName().c_str());
addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangType, subMatrixLayout));
addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangType, subQualifier.layoutMatrix));
addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangType));
addMemberDecoration(spvType, member, TranslateInterpolationDecoration(glslangType));
addMemberDecoration(spvType, member, TranslateInvariantDecoration(glslangType));
addMemberDecoration(spvType, member, TranslateInterpolationDecoration(subQualifier));
addMemberDecoration(spvType, member, TranslateInvariantDecoration(subQualifier));
if (glslangType.getQualifier().hasLocation())
builder.addMemberDecoration(spvType, member, spv::DecorationLocation, glslangType.getQualifier().layoutLocation);
if (glslangType.getQualifier().hasComponent())
@@ -1576,14 +1608,14 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
else if (explicitLayout != glslang::ElpNone) {
// figure out what to do with offset, which is accumulating
int nextOffset;
updateMemberOffset(type, glslangType, offset, nextOffset, explicitLayout, subMatrixLayout);
updateMemberOffset(type, glslangType, offset, nextOffset, explicitLayout, subQualifier.layoutMatrix);
if (offset >= 0)
builder.addMemberDecoration(spvType, member, spv::DecorationOffset, offset);
offset = nextOffset;
}
if (glslangType.isMatrix() && explicitLayout != glslang::ElpNone)
builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangType, explicitLayout, subMatrixLayout));
builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangType, explicitLayout, subQualifier.layoutMatrix));
// built-in variable decorations
spv::BuiltIn builtIn = TranslateBuiltInDecoration(glslangType.getQualifier().builtIn);
@@ -1593,7 +1625,7 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
}
// Decorate the structure
addDecoration(spvType, TranslateLayoutDecoration(type, matrixLayout));
addDecoration(spvType, TranslateLayoutDecoration(type, qualifier.layoutMatrix));
addDecoration(spvType, TranslateBlockDecoration(type));
if (type.getQualifier().hasStream())
builder.addDecoration(spvType, spv::DecorationStream, type.getQualifier().layoutStream);
@@ -1641,7 +1673,7 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
// except for the very top if it is an array of blocks; that array is
// not laid out in memory in a way needing a stride.
if (explicitLayout && type.getBasicType() != glslang::EbtBlock)
builder.addDecoration(spvType, spv::DecorationArrayStride, getArrayStride(type, explicitLayout, matrixLayout));
builder.addDecoration(spvType, spv::DecorationArrayStride, getArrayStride(type, explicitLayout, qualifier.layoutMatrix));
}
return spvType;
@@ -3146,7 +3178,7 @@ spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol
if (! symbol->getType().isStruct()) {
addDecoration(id, TranslatePrecisionDecoration(symbol->getType()));
addDecoration(id, TranslateInterpolationDecoration(symbol->getType()));
addDecoration(id, TranslateInterpolationDecoration(symbol->getType().getQualifier()));
if (symbol->getQualifier().hasLocation())
builder.addDecoration(id, spv::DecorationLocation, symbol->getQualifier().layoutLocation);
if (symbol->getQualifier().hasIndex())
@@ -3163,7 +3195,7 @@ spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol
}
}
addDecoration(id, TranslateInvariantDecoration(symbol->getType()));
addDecoration(id, TranslateInvariantDecoration(symbol->getType().getQualifier()));
if (symbol->getQualifier().hasStream())
builder.addDecoration(id, spv::DecorationStream, symbol->getQualifier().layoutStream);
if (symbol->getQualifier().hasSet())