mirror of
https://github.com/KhronosGroup/glslang
synced 2024-11-08 19:40:06 +00:00
SPV: Non-functional: break up big function into three smaller ones.
Also, improve variable names. This grew to be overly hard to understand.
This commit is contained in:
John Kessenich
parent
266b1d3e84
commit
6090df0fa3
@ -115,6 +115,10 @@ protected:
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spv::Id getSampledType(const glslang::TSampler&);
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spv::Id convertGlslangToSpvType(const glslang::TType& type);
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spv::Id convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking, const glslang::TQualifier&);
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spv::Id convertGlslangStructToSpvType(const glslang::TType&, const glslang::TTypeList* glslangStruct,
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glslang::TLayoutPacking, const glslang::TQualifier&);
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void decorateStructType(const glslang::TType&, const glslang::TTypeList* glslangStruct, glslang::TLayoutPacking,
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const glslang::TQualifier&, spv::Id);
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spv::Id makeArraySizeId(const glslang::TArraySizes&, int dim);
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spv::Id accessChainLoad(const glslang::TType& type);
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void accessChainStore(const glslang::TType& type, spv::Id rvalue);
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@ -1789,6 +1793,7 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
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// Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
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// explicitLayout can be kept the same throughout the hierarchical recursive walk.
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// Mutually recursive with convertGlslangStructToSpvType().
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spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking explicitLayout, const glslang::TQualifier& qualifier)
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{
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spv::Id spvType = spv::NoResult;
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@ -1851,144 +1856,19 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
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case glslang::EbtBlock:
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{
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// If we've seen this struct type, return it
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const glslang::TTypeList* glslangStruct = type.getStruct();
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std::vector<spv::Id> structFields;
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const glslang::TTypeList* glslangMembers = type.getStruct();
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// Try to share structs for different layouts, but not yet for other
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// kinds of qualification (primarily not yet including interpolant qualification).
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if (! HasNonLayoutQualifiers(qualifier))
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spvType = structMap[explicitLayout][qualifier.layoutMatrix][glslangStruct];
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spvType = structMap[explicitLayout][qualifier.layoutMatrix][glslangMembers];
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if (spvType != spv::NoResult)
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break;
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// else, we haven't seen it...
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// Create a vector of struct types for SPIR-V to consume
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int memberDelta = 0; // how much the member's index changes from glslang to SPIR-V, normally 0, except sometimes for blocks
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if (type.getBasicType() == glslang::EbtBlock)
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memberRemapper[glslangStruct].resize(glslangStruct->size());
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int locationOffset = 0; // for use across struct members, when they are called recursively
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for (int i = 0; i < (int)glslangStruct->size(); i++) {
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glslang::TType& glslangType = *(*glslangStruct)[i].type;
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if (glslangType.hiddenMember()) {
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++memberDelta;
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if (type.getBasicType() == glslang::EbtBlock)
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memberRemapper[glslangStruct][i] = -1;
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} else {
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if (type.getBasicType() == glslang::EbtBlock)
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memberRemapper[glslangStruct][i] = i - memberDelta;
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// modify just this child's view of the qualifier
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glslang::TQualifier subQualifier = glslangType.getQualifier();
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InheritQualifiers(subQualifier, qualifier);
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// manually inherit location; it's more complex
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if (! subQualifier.hasLocation() && qualifier.hasLocation())
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subQualifier.layoutLocation = qualifier.layoutLocation + locationOffset;
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if (qualifier.hasLocation())
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locationOffset += glslangIntermediate->computeTypeLocationSize(glslangType);
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// recurse
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structFields.push_back(convertGlslangToSpvType(glslangType, explicitLayout, subQualifier));
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}
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}
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// Make the SPIR-V type
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spvType = builder.makeStructType(structFields, type.getTypeName().c_str());
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if (! HasNonLayoutQualifiers(qualifier))
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structMap[explicitLayout][qualifier.layoutMatrix][glslangStruct] = spvType;
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// Name and decorate the non-hidden members
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int offset = -1;
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locationOffset = 0; // for use within the members of this struct, right now
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for (int i = 0; i < (int)glslangStruct->size(); i++) {
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glslang::TType& glslangType = *(*glslangStruct)[i].type;
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int member = i;
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if (type.getBasicType() == glslang::EbtBlock)
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member = memberRemapper[glslangStruct][i];
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// modify just this child's view of the qualifier
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glslang::TQualifier subQualifier = glslangType.getQualifier();
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InheritQualifiers(subQualifier, qualifier);
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// using -1 above to indicate a hidden member
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if (member >= 0) {
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builder.addMemberName(spvType, member, glslangType.getFieldName().c_str());
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addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangType, subQualifier.layoutMatrix));
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addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangType));
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// Add interpolation and auxiliary storage decorations only to top-level members of Input and Output storage classes
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if (type.getQualifier().storage == glslang::EvqVaryingIn || type.getQualifier().storage == glslang::EvqVaryingOut) {
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if (type.getBasicType() == glslang::EbtBlock) {
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addMemberDecoration(spvType, member, TranslateInterpolationDecoration(subQualifier));
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addMemberDecoration(spvType, member, TranslateAuxiliaryStorageDecoration(subQualifier));
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}
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}
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addMemberDecoration(spvType, member, TranslateInvariantDecoration(subQualifier));
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if (qualifier.storage == glslang::EvqBuffer) {
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std::vector<spv::Decoration> memory;
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TranslateMemoryDecoration(subQualifier, memory);
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for (unsigned int i = 0; i < memory.size(); ++i)
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addMemberDecoration(spvType, member, memory[i]);
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}
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// compute location decoration; tricky based on whether inheritance is at play
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// TODO: This algorithm (and it's cousin above doing almost the same thing) should
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// probably move to the linker stage of the front end proper, and just have the
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// answer sitting already distributed throughout the individual member locations.
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int location = -1; // will only decorate if present or inherited
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if (subQualifier.hasLocation()) { // no inheritance, or override of inheritance
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// struct members should not have explicit locations
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assert(type.getBasicType() != glslang::EbtStruct);
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location = subQualifier.layoutLocation;
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} else if (type.getBasicType() != glslang::EbtBlock) {
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// If it is a not a Block, (...) Its members are assigned consecutive locations (...)
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// The members, and their nested types, must not themselves have Location decorations.
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}
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else if (qualifier.hasLocation()) // inheritance
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location = qualifier.layoutLocation + locationOffset;
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if (qualifier.hasLocation()) // track for upcoming inheritance
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locationOffset += glslangIntermediate->computeTypeLocationSize(glslangType);
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if (location >= 0)
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builder.addMemberDecoration(spvType, member, spv::DecorationLocation, location);
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// component, XFB, others
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if (glslangType.getQualifier().hasComponent())
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builder.addMemberDecoration(spvType, member, spv::DecorationComponent, glslangType.getQualifier().layoutComponent);
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if (glslangType.getQualifier().hasXfbOffset())
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builder.addMemberDecoration(spvType, member, spv::DecorationOffset, glslangType.getQualifier().layoutXfbOffset);
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else if (explicitLayout != glslang::ElpNone) {
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// figure out what to do with offset, which is accumulating
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int nextOffset;
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updateMemberOffset(type, glslangType, offset, nextOffset, explicitLayout, subQualifier.layoutMatrix);
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if (offset >= 0)
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builder.addMemberDecoration(spvType, member, spv::DecorationOffset, offset);
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offset = nextOffset;
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}
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if (glslangType.isMatrix() && explicitLayout != glslang::ElpNone)
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builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangType, explicitLayout, subQualifier.layoutMatrix));
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// built-in variable decorations
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spv::BuiltIn builtIn = TranslateBuiltInDecoration(glslangType.getQualifier().builtIn, true);
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if (builtIn != spv::BadValue)
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addMemberDecoration(spvType, member, spv::DecorationBuiltIn, (int)builtIn);
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}
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}
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// Decorate the structure
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addDecoration(spvType, TranslateLayoutDecoration(type, qualifier.layoutMatrix));
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addDecoration(spvType, TranslateBlockDecoration(type));
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if (type.getQualifier().hasStream() && glslangIntermediate->isMultiStream()) {
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builder.addCapability(spv::CapabilityGeometryStreams);
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builder.addDecoration(spvType, spv::DecorationStream, type.getQualifier().layoutStream);
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}
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if (glslangIntermediate->getXfbMode()) {
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builder.addCapability(spv::CapabilityTransformFeedback);
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if (type.getQualifier().hasXfbStride())
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builder.addDecoration(spvType, spv::DecorationXfbStride, type.getQualifier().layoutXfbStride);
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if (type.getQualifier().hasXfbBuffer())
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builder.addDecoration(spvType, spv::DecorationXfbBuffer, type.getQualifier().layoutXfbBuffer);
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}
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memberRemapper[glslangMembers].resize(glslangMembers->size());
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spvType = convertGlslangStructToSpvType(type, glslangMembers, explicitLayout, qualifier);
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}
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break;
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default:
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@ -2051,6 +1931,153 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
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return spvType;
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}
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// Do full recursive conversion of a glslang structure (or block) type to a SPIR-V Id.
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// explicitLayout can be kept the same throughout the hierarchical recursive walk.
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// Mutually recursive with convertGlslangToSpvType().
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spv::Id TGlslangToSpvTraverser::convertGlslangStructToSpvType(const glslang::TType& type,
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const glslang::TTypeList* glslangMembers,
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glslang::TLayoutPacking explicitLayout,
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const glslang::TQualifier& qualifier)
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{
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// Create a vector of struct types for SPIR-V to consume
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std::vector<spv::Id> spvMembers;
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int memberDelta = 0; // how much the member's index changes from glslang to SPIR-V, normally 0, except sometimes for blocks
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int locationOffset = 0; // for use across struct members, when they are called recursively
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for (int i = 0; i < (int)glslangMembers->size(); i++) {
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glslang::TType& glslangMember = *(*glslangMembers)[i].type;
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if (glslangMember.hiddenMember()) {
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++memberDelta;
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if (type.getBasicType() == glslang::EbtBlock)
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memberRemapper[glslangMembers][i] = -1;
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} else {
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if (type.getBasicType() == glslang::EbtBlock)
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memberRemapper[glslangMembers][i] = i - memberDelta;
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// modify just this child's view of the qualifier
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glslang::TQualifier memberQualifier = glslangMember.getQualifier();
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InheritQualifiers(memberQualifier, qualifier);
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// manually inherit location; it's more complex
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if (! memberQualifier.hasLocation() && qualifier.hasLocation())
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memberQualifier.layoutLocation = qualifier.layoutLocation + locationOffset;
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if (qualifier.hasLocation())
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locationOffset += glslangIntermediate->computeTypeLocationSize(glslangMember);
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// recurse
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spvMembers.push_back(convertGlslangToSpvType(glslangMember, explicitLayout, memberQualifier));
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}
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}
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// Make the SPIR-V type
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spv::Id spvType = builder.makeStructType(spvMembers, type.getTypeName().c_str());
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if (! HasNonLayoutQualifiers(qualifier))
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structMap[explicitLayout][qualifier.layoutMatrix][glslangMembers] = spvType;
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// Decorate it
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decorateStructType(type, glslangMembers, explicitLayout, qualifier, spvType);
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return spvType;
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}
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void TGlslangToSpvTraverser::decorateStructType(const glslang::TType& type,
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const glslang::TTypeList* glslangMembers,
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glslang::TLayoutPacking explicitLayout,
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const glslang::TQualifier& qualifier,
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spv::Id spvType)
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{
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// Name and decorate the non-hidden members
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int offset = -1;
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int locationOffset = 0; // for use within the members of this struct
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for (int i = 0; i < (int)glslangMembers->size(); i++) {
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glslang::TType& glslangMember = *(*glslangMembers)[i].type;
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int member = i;
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if (type.getBasicType() == glslang::EbtBlock)
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member = memberRemapper[glslangMembers][i];
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// modify just this child's view of the qualifier
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glslang::TQualifier memberQualifier = glslangMember.getQualifier();
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InheritQualifiers(memberQualifier, qualifier);
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// using -1 above to indicate a hidden member
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if (member >= 0) {
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builder.addMemberName(spvType, member, glslangMember.getFieldName().c_str());
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addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangMember, memberQualifier.layoutMatrix));
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addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangMember));
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// Add interpolation and auxiliary storage decorations only to top-level members of Input and Output storage classes
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if (type.getQualifier().storage == glslang::EvqVaryingIn || type.getQualifier().storage == glslang::EvqVaryingOut) {
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if (type.getBasicType() == glslang::EbtBlock) {
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addMemberDecoration(spvType, member, TranslateInterpolationDecoration(memberQualifier));
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addMemberDecoration(spvType, member, TranslateAuxiliaryStorageDecoration(memberQualifier));
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}
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}
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addMemberDecoration(spvType, member, TranslateInvariantDecoration(memberQualifier));
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if (qualifier.storage == glslang::EvqBuffer) {
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std::vector<spv::Decoration> memory;
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TranslateMemoryDecoration(memberQualifier, memory);
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for (unsigned int i = 0; i < memory.size(); ++i)
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addMemberDecoration(spvType, member, memory[i]);
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}
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// compute location decoration; tricky based on whether inheritance is at play
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// TODO: This algorithm (and it's cousin above doing almost the same thing) should
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// probably move to the linker stage of the front end proper, and just have the
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// answer sitting already distributed throughout the individual member locations.
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int location = -1; // will only decorate if present or inherited
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if (memberQualifier.hasLocation()) { // no inheritance, or override of inheritance
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// struct members should not have explicit locations
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assert(type.getBasicType() != glslang::EbtStruct);
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location = memberQualifier.layoutLocation;
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} else if (type.getBasicType() != glslang::EbtBlock) {
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// If it is a not a Block, (...) Its members are assigned consecutive locations (...)
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// The members, and their nested types, must not themselves have Location decorations.
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} else if (qualifier.hasLocation()) // inheritance
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location = qualifier.layoutLocation + locationOffset;
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if (qualifier.hasLocation()) // track for upcoming inheritance
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locationOffset += glslangIntermediate->computeTypeLocationSize(glslangMember);
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if (location >= 0)
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builder.addMemberDecoration(spvType, member, spv::DecorationLocation, location);
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// component, XFB, others
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if (glslangMember.getQualifier().hasComponent())
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builder.addMemberDecoration(spvType, member, spv::DecorationComponent, glslangMember.getQualifier().layoutComponent);
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if (glslangMember.getQualifier().hasXfbOffset())
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builder.addMemberDecoration(spvType, member, spv::DecorationOffset, glslangMember.getQualifier().layoutXfbOffset);
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else if (explicitLayout != glslang::ElpNone) {
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// figure out what to do with offset, which is accumulating
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int nextOffset;
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updateMemberOffset(type, glslangMember, offset, nextOffset, explicitLayout, memberQualifier.layoutMatrix);
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if (offset >= 0)
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builder.addMemberDecoration(spvType, member, spv::DecorationOffset, offset);
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offset = nextOffset;
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}
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if (glslangMember.isMatrix() && explicitLayout != glslang::ElpNone)
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builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangMember, explicitLayout, memberQualifier.layoutMatrix));
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// built-in variable decorations
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spv::BuiltIn builtIn = TranslateBuiltInDecoration(glslangMember.getQualifier().builtIn, true);
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if (builtIn != spv::BadValue)
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addMemberDecoration(spvType, member, spv::DecorationBuiltIn, (int)builtIn);
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}
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}
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// Decorate the structure
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addDecoration(spvType, TranslateLayoutDecoration(type, qualifier.layoutMatrix));
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addDecoration(spvType, TranslateBlockDecoration(type));
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if (type.getQualifier().hasStream() && glslangIntermediate->isMultiStream()) {
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builder.addCapability(spv::CapabilityGeometryStreams);
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builder.addDecoration(spvType, spv::DecorationStream, type.getQualifier().layoutStream);
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}
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if (glslangIntermediate->getXfbMode()) {
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builder.addCapability(spv::CapabilityTransformFeedback);
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if (type.getQualifier().hasXfbStride())
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builder.addDecoration(spvType, spv::DecorationXfbStride, type.getQualifier().layoutXfbStride);
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if (type.getQualifier().hasXfbBuffer())
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builder.addDecoration(spvType, spv::DecorationXfbBuffer, type.getQualifier().layoutXfbBuffer);
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}
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}
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// Turn the expression forming the array size into an id.
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// This is not quite trivial, because of specialization constants.
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// Sometimes, a raw constant is turned into an Id, and sometimes
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