| // |
| // Copyright 2018 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // ShaderStorageBlockOutputHLSL: A traverser to translate a ssbo_access_chain to an offset of |
| // RWByteAddressBuffer. |
| // //EOpIndexDirectInterfaceBlock |
| // ssbo_variable := |
| // | the name of the SSBO |
| // | the name of a variable in an SSBO backed interface block |
| |
| // // EOpIndexInDirect |
| // // EOpIndexDirect |
| // ssbo_array_indexing := ssbo_access_chain[expr_no_ssbo] |
| |
| // // EOpIndexDirectStruct |
| // ssbo_structure_access := ssbo_access_chain.identifier |
| |
| // ssbo_access_chain := |
| // | ssbo_variable |
| // | ssbo_array_indexing |
| // | ssbo_structure_access |
| // |
| |
| #include "compiler/translator/ShaderStorageBlockOutputHLSL.h" |
| |
| #include "compiler/translator/ResourcesHLSL.h" |
| #include "compiler/translator/blocklayoutHLSL.h" |
| #include "compiler/translator/util.h" |
| |
| namespace sh |
| { |
| |
| namespace |
| { |
| |
| const TField *GetFieldMemberInShaderStorageBlock(const TInterfaceBlock *interfaceBlock, |
| const ImmutableString &variableName) |
| { |
| for (const TField *field : interfaceBlock->fields()) |
| { |
| if (field->name() == variableName) |
| { |
| return field; |
| } |
| } |
| return nullptr; |
| } |
| |
| void GetShaderStorageBlockFieldMemberInfo(const TFieldList &fields, |
| sh::BlockLayoutEncoder *encoder, |
| TLayoutBlockStorage storage, |
| bool rowMajor, |
| bool isSSBOFieldMember, |
| BlockMemberInfoMap *blockInfoOut); |
| |
| size_t GetBlockFieldMemberInfoAndReturnBlockSize(const TFieldList &fields, |
| TLayoutBlockStorage storage, |
| bool rowMajor, |
| BlockMemberInfoMap *blockInfoOut) |
| { |
| sh::Std140BlockEncoder std140Encoder; |
| sh::HLSLBlockEncoder hlslEncoder(sh::HLSLBlockEncoder::ENCODE_PACKED, false); |
| sh::BlockLayoutEncoder *structureEncoder = nullptr; |
| |
| if (storage == EbsStd140) |
| { |
| structureEncoder = &std140Encoder; |
| } |
| else |
| { |
| // TODO(jiajia.qin@intel.com): add std430 support. |
| structureEncoder = &hlslEncoder; |
| } |
| |
| GetShaderStorageBlockFieldMemberInfo(fields, structureEncoder, storage, rowMajor, false, |
| blockInfoOut); |
| structureEncoder->exitAggregateType(); |
| return structureEncoder->getBlockSize(); |
| } |
| |
| void GetShaderStorageBlockFieldMemberInfo(const TFieldList &fields, |
| sh::BlockLayoutEncoder *encoder, |
| TLayoutBlockStorage storage, |
| bool rowMajor, |
| bool isSSBOFieldMember, |
| BlockMemberInfoMap *blockInfoOut) |
| { |
| for (const TField *field : fields) |
| { |
| const TType &fieldType = *field->type(); |
| bool isRowMajorLayout = rowMajor; |
| if (isSSBOFieldMember) |
| { |
| isRowMajorLayout = (fieldType.getLayoutQualifier().matrixPacking == EmpRowMajor); |
| } |
| if (fieldType.getStruct()) |
| { |
| encoder->enterAggregateType(); |
| // This is to set structure member offset and array stride using a new encoder to ensure |
| // that the first field member offset in structure is always zero. |
| size_t structureStride = GetBlockFieldMemberInfoAndReturnBlockSize( |
| fieldType.getStruct()->fields(), storage, isRowMajorLayout, blockInfoOut); |
| const BlockMemberInfo memberInfo(static_cast<int>(encoder->getBlockSize()), |
| static_cast<int>(structureStride), 0, false); |
| (*blockInfoOut)[field] = memberInfo; |
| |
| // Below if-else is in order to get correct offset for the field members after structure |
| // field. |
| if (fieldType.isArray()) |
| { |
| size_t size = fieldType.getArraySizeProduct() * structureStride; |
| encoder->increaseCurrentOffset(size); |
| } |
| else |
| { |
| encoder->increaseCurrentOffset(structureStride); |
| } |
| } |
| else if (fieldType.isArrayOfArrays()) |
| { |
| // TODO(jiajia.qin@intel.com): Add array of array field member support. |
| } |
| else |
| { |
| std::vector<unsigned int> fieldArraySizes; |
| if (auto *arraySizes = fieldType.getArraySizes()) |
| { |
| fieldArraySizes.assign(arraySizes->begin(), arraySizes->end()); |
| } |
| const BlockMemberInfo &memberInfo = |
| encoder->encodeType(GLVariableType(fieldType), fieldArraySizes, |
| isRowMajorLayout && fieldType.isMatrix()); |
| (*blockInfoOut)[field] = memberInfo; |
| } |
| } |
| } |
| |
| void GetShaderStorageBlockMembersInfo(const TInterfaceBlock *interfaceBlock, |
| BlockMemberInfoMap *blockInfoOut) |
| { |
| sh::Std140BlockEncoder std140Encoder; |
| sh::HLSLBlockEncoder hlslEncoder(sh::HLSLBlockEncoder::ENCODE_PACKED, false); |
| sh::BlockLayoutEncoder *encoder = nullptr; |
| |
| if (interfaceBlock->blockStorage() == EbsStd140) |
| { |
| encoder = &std140Encoder; |
| } |
| else |
| { |
| // TODO(jiajia.qin@intel.com): add std430 support. |
| encoder = &hlslEncoder; |
| } |
| |
| GetShaderStorageBlockFieldMemberInfo(interfaceBlock->fields(), encoder, |
| interfaceBlock->blockStorage(), false, true, blockInfoOut); |
| } |
| |
| bool IsInArrayOfArraysChain(TIntermTyped *node) |
| { |
| if (node->getType().isArrayOfArrays()) |
| return true; |
| TIntermBinary *binaryNode = node->getAsBinaryNode(); |
| if (binaryNode) |
| { |
| if (binaryNode->getLeft()->getType().isArrayOfArrays()) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } // anonymous namespace |
| |
| ShaderStorageBlockOutputHLSL::ShaderStorageBlockOutputHLSL(OutputHLSL *outputHLSL, |
| TSymbolTable *symbolTable, |
| ResourcesHLSL *resourcesHLSL) |
| : TIntermTraverser(true, true, true, symbolTable), |
| mMatrixStride(0), |
| mRowMajor(false), |
| mIsLoadFunctionCall(false), |
| mOutputHLSL(outputHLSL), |
| mResourcesHLSL(resourcesHLSL) |
| { |
| mSSBOFunctionHLSL = new ShaderStorageBlockFunctionHLSL; |
| } |
| |
| ShaderStorageBlockOutputHLSL::~ShaderStorageBlockOutputHLSL() |
| { |
| SafeDelete(mSSBOFunctionHLSL); |
| } |
| |
| void ShaderStorageBlockOutputHLSL::outputStoreFunctionCallPrefix(TIntermTyped *node) |
| { |
| mIsLoadFunctionCall = false; |
| traverseSSBOAccess(node, SSBOMethod::STORE); |
| } |
| |
| void ShaderStorageBlockOutputHLSL::outputLoadFunctionCall(TIntermTyped *node) |
| { |
| mIsLoadFunctionCall = true; |
| traverseSSBOAccess(node, SSBOMethod::LOAD); |
| } |
| |
| void ShaderStorageBlockOutputHLSL::traverseSSBOAccess(TIntermTyped *node, SSBOMethod method) |
| { |
| const TString &functionName = |
| mSSBOFunctionHLSL->registerShaderStorageBlockFunction(node->getType(), method); |
| TInfoSinkBase &out = mOutputHLSL->getInfoSink(); |
| out << functionName; |
| out << "("; |
| node->traverse(this); |
| } |
| |
| void ShaderStorageBlockOutputHLSL::writeShaderStorageBlocksHeader(TInfoSinkBase &out) const |
| { |
| out << mResourcesHLSL->shaderStorageBlocksHeader(mReferencedShaderStorageBlocks); |
| mSSBOFunctionHLSL->shaderStorageBlockFunctionHeader(out); |
| } |
| |
| // Check if the current node is the end of the sssbo access chain. If true, we should output ')' for |
| // Load method. |
| bool ShaderStorageBlockOutputHLSL::isEndOfSSBOAccessChain() |
| { |
| TIntermNode *parent = getParentNode(); |
| if (parent) |
| { |
| TIntermBinary *parentBinary = parent->getAsBinaryNode(); |
| if (parentBinary != nullptr) |
| { |
| switch (parentBinary->getOp()) |
| { |
| case EOpIndexDirectStruct: |
| case EOpIndexDirect: |
| case EOpIndexIndirect: |
| { |
| return false; |
| } |
| default: |
| return true; |
| } |
| } |
| |
| const TIntermSwizzle *parentSwizzle = parent->getAsSwizzleNode(); |
| if (parentSwizzle) |
| { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| void ShaderStorageBlockOutputHLSL::visitSymbol(TIntermSymbol *node) |
| { |
| TInfoSinkBase &out = mOutputHLSL->getInfoSink(); |
| const TVariable &variable = node->variable(); |
| TQualifier qualifier = variable.getType().getQualifier(); |
| |
| if (qualifier == EvqBuffer) |
| { |
| const TType &variableType = variable.getType(); |
| const TInterfaceBlock *interfaceBlock = variableType.getInterfaceBlock(); |
| ASSERT(interfaceBlock); |
| if (mReferencedShaderStorageBlocks.count(interfaceBlock->uniqueId().get()) == 0) |
| { |
| const TVariable *instanceVariable = nullptr; |
| if (variableType.isInterfaceBlock()) |
| { |
| instanceVariable = &variable; |
| } |
| mReferencedShaderStorageBlocks[interfaceBlock->uniqueId().get()] = |
| new TReferencedBlock(interfaceBlock, instanceVariable); |
| GetShaderStorageBlockMembersInfo(interfaceBlock, &mBlockMemberInfoMap); |
| } |
| if (variableType.isInterfaceBlock()) |
| { |
| out << DecorateVariableIfNeeded(variable); |
| } |
| else |
| { |
| out << Decorate(interfaceBlock->name()); |
| out << ", "; |
| |
| const TField *field = |
| GetFieldMemberInShaderStorageBlock(interfaceBlock, variable.name()); |
| writeDotOperatorOutput(out, field); |
| } |
| } |
| else |
| { |
| return mOutputHLSL->visitSymbol(node); |
| } |
| } |
| |
| void ShaderStorageBlockOutputHLSL::visitConstantUnion(TIntermConstantUnion *node) |
| { |
| mOutputHLSL->visitConstantUnion(node); |
| } |
| |
| bool ShaderStorageBlockOutputHLSL::visitAggregate(Visit visit, TIntermAggregate *node) |
| { |
| return mOutputHLSL->visitAggregate(visit, node); |
| } |
| |
| bool ShaderStorageBlockOutputHLSL::visitTernary(Visit visit, TIntermTernary *node) |
| { |
| return mOutputHLSL->visitTernary(visit, node); |
| } |
| |
| bool ShaderStorageBlockOutputHLSL::visitUnary(Visit visit, TIntermUnary *node) |
| { |
| return mOutputHLSL->visitUnary(visit, node); |
| } |
| |
| bool ShaderStorageBlockOutputHLSL::visitSwizzle(Visit visit, TIntermSwizzle *node) |
| { |
| if (visit == PostVisit) |
| { |
| if (!IsInShaderStorageBlock(node)) |
| { |
| return mOutputHLSL->visitSwizzle(visit, node); |
| } |
| |
| TInfoSinkBase &out = mOutputHLSL->getInfoSink(); |
| // TODO(jiajia.qin@intel.com): add swizzle process. |
| if (mIsLoadFunctionCall) |
| { |
| out << ")"; |
| } |
| } |
| return true; |
| } |
| |
| bool ShaderStorageBlockOutputHLSL::visitBinary(Visit visit, TIntermBinary *node) |
| { |
| TInfoSinkBase &out = mOutputHLSL->getInfoSink(); |
| |
| switch (node->getOp()) |
| { |
| case EOpIndexDirect: |
| { |
| if (!IsInShaderStorageBlock(node->getLeft())) |
| { |
| return mOutputHLSL->visitBinary(visit, node); |
| } |
| |
| const TType &leftType = node->getLeft()->getType(); |
| if (leftType.isInterfaceBlock()) |
| { |
| if (visit == PreVisit) |
| { |
| ASSERT(leftType.getQualifier() == EvqBuffer); |
| TIntermSymbol *instanceArraySymbol = node->getLeft()->getAsSymbolNode(); |
| const TInterfaceBlock *interfaceBlock = leftType.getInterfaceBlock(); |
| |
| if (mReferencedShaderStorageBlocks.count(interfaceBlock->uniqueId().get()) == 0) |
| { |
| mReferencedShaderStorageBlocks[interfaceBlock->uniqueId().get()] = |
| new TReferencedBlock(interfaceBlock, &instanceArraySymbol->variable()); |
| GetShaderStorageBlockMembersInfo(interfaceBlock, &mBlockMemberInfoMap); |
| } |
| |
| const int arrayIndex = node->getRight()->getAsConstantUnion()->getIConst(0); |
| out << mResourcesHLSL->InterfaceBlockInstanceString( |
| instanceArraySymbol->getName(), arrayIndex); |
| return false; |
| } |
| } |
| else |
| { |
| writeEOpIndexDirectOrIndirectOutput(out, visit, node); |
| } |
| break; |
| } |
| case EOpIndexIndirect: |
| { |
| if (!IsInShaderStorageBlock(node->getLeft())) |
| { |
| return mOutputHLSL->visitBinary(visit, node); |
| } |
| |
| // We do not currently support indirect references to interface blocks |
| ASSERT(node->getLeft()->getBasicType() != EbtInterfaceBlock); |
| writeEOpIndexDirectOrIndirectOutput(out, visit, node); |
| break; |
| } |
| case EOpIndexDirectStruct: |
| { |
| if (!IsInShaderStorageBlock(node->getLeft())) |
| { |
| return mOutputHLSL->visitBinary(visit, node); |
| } |
| |
| if (visit == InVisit) |
| { |
| ASSERT(IsInShaderStorageBlock(node->getLeft())); |
| const TStructure *structure = node->getLeft()->getType().getStruct(); |
| const TIntermConstantUnion *index = node->getRight()->getAsConstantUnion(); |
| const TField *field = structure->fields()[index->getIConst(0)]; |
| out << " + "; |
| writeDotOperatorOutput(out, field); |
| return false; |
| } |
| break; |
| } |
| case EOpIndexDirectInterfaceBlock: |
| if (visit == InVisit) |
| { |
| ASSERT(IsInShaderStorageBlock(node->getLeft())); |
| out << ", "; |
| const TInterfaceBlock *interfaceBlock = |
| node->getLeft()->getType().getInterfaceBlock(); |
| const TIntermConstantUnion *index = node->getRight()->getAsConstantUnion(); |
| const TField *field = interfaceBlock->fields()[index->getIConst(0)]; |
| writeDotOperatorOutput(out, field); |
| return false; |
| } |
| break; |
| default: |
| // It may have other operators in EOpIndexIndirect. Such as buffer.attribs[(y * gridSize |
| // + x) * 6u + 0u] |
| return mOutputHLSL->visitBinary(visit, node); |
| } |
| |
| return true; |
| } |
| |
| void ShaderStorageBlockOutputHLSL::writeEOpIndexDirectOrIndirectOutput(TInfoSinkBase &out, |
| Visit visit, |
| TIntermBinary *node) |
| { |
| ASSERT(IsInShaderStorageBlock(node->getLeft())); |
| if (visit == InVisit) |
| { |
| const TType &type = node->getLeft()->getType(); |
| // For array of arrays, we calculate the offset using the formula below: |
| // elementStride * (a3 * a2 * a1 * i0 + a3 * a2 * i1 + a3 * i2 + i3) |
| // Note: assume that there are 4 dimensions. |
| // a0, a1, a2, a3 is the size of the array in each dimension. (S s[a0][a1][a2][a3]) |
| // i0, i1, i2, i3 is the index of the array in each dimension. (s[i0][i1][i2][i3]) |
| if (IsInArrayOfArraysChain(node->getLeft())) |
| { |
| if (type.isArrayOfArrays()) |
| { |
| const TVector<unsigned int> &arraySizes = *type.getArraySizes(); |
| // Don't need to concern the tail comma which will be used to multiply the index. |
| for (unsigned int i = 0; i < (arraySizes.size() - 1); i++) |
| { |
| out << arraySizes[i]; |
| out << " * "; |
| } |
| } |
| } |
| else |
| { |
| if (node->getType().isVector() && type.isMatrix()) |
| { |
| if (mRowMajor) |
| { |
| out << " + " << str(BlockLayoutEncoder::BytesPerComponent); |
| } |
| else |
| { |
| out << " + " << str(mMatrixStride); |
| } |
| } |
| else if (node->getType().isScalar() && !type.isArray()) |
| { |
| if (mRowMajor) |
| { |
| out << " + " << str(mMatrixStride); |
| } |
| else |
| { |
| out << " + " << str(BlockLayoutEncoder::BytesPerComponent); |
| } |
| } |
| |
| out << " * "; |
| } |
| } |
| else if (visit == PostVisit) |
| { |
| // This is used to output the '+' in the array of arrays formula in above. |
| if (node->getType().isArray() && !isEndOfSSBOAccessChain()) |
| { |
| out << " + "; |
| } |
| // This corresponds to '(' in writeDotOperatorOutput when fieldType.isArrayOfArrays() is |
| // true. |
| if (IsInArrayOfArraysChain(node->getLeft()) && !node->getType().isArray()) |
| { |
| out << ")"; |
| } |
| if (mIsLoadFunctionCall && isEndOfSSBOAccessChain()) |
| { |
| out << ")"; |
| } |
| } |
| } |
| |
| void ShaderStorageBlockOutputHLSL::writeDotOperatorOutput(TInfoSinkBase &out, const TField *field) |
| { |
| auto fieldInfoIter = mBlockMemberInfoMap.find(field); |
| ASSERT(fieldInfoIter != mBlockMemberInfoMap.end()); |
| const BlockMemberInfo &memberInfo = fieldInfoIter->second; |
| mMatrixStride = memberInfo.matrixStride; |
| mRowMajor = memberInfo.isRowMajorMatrix; |
| out << memberInfo.offset; |
| |
| const TType &fieldType = *field->type(); |
| if (fieldType.isArray() && !isEndOfSSBOAccessChain()) |
| { |
| out << " + "; |
| out << memberInfo.arrayStride; |
| if (fieldType.isArrayOfArrays()) |
| { |
| out << " * ("; |
| } |
| } |
| if (mIsLoadFunctionCall && isEndOfSSBOAccessChain()) |
| { |
| out << ")"; |
| } |
| } |
| |
| } // namespace sh |