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//
// 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 buffer variable of shader storage block
// to an offset of RWByteAddressBuffer.
//
#ifndef COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKOUTPUTHLSL_H_
#define COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKOUTPUTHLSL_H_
#include "compiler/translator/IntermNode.h"
#include "compiler/translator/ShaderStorageBlockFunctionHLSL.h"
#include "compiler/translator/blocklayout.h"
namespace sh
{
class ResourcesHLSL;
class OutputHLSL;
class TSymbolTable;
struct TReferencedBlock : angle::NonCopyable
{
POOL_ALLOCATOR_NEW_DELETE
TReferencedBlock(const TInterfaceBlock *block, const TVariable *instanceVariable);
const TInterfaceBlock *block;
const TVariable *instanceVariable; // May be nullptr if the block is not instanced.
};
// Maps from uniqueId to a variable.
using ReferencedInterfaceBlocks = std::map<int, const TReferencedBlock *>;
// Used to save shader storage block field member information.
using BlockMemberInfoMap = std::map<const TField *, BlockMemberInfo>;
using ShaderVarToFieldMap = std::map<std::string, const TField *>;
class ShaderStorageBlockOutputHLSL
{
public:
ShaderStorageBlockOutputHLSL(OutputHLSL *outputHLSL,
ResourcesHLSL *resourcesHLSL,
const std::vector<InterfaceBlock> &shaderStorageBlocks);
~ShaderStorageBlockOutputHLSL();
// This writes part of the function call to store a value to a SSBO to the output stream. After
// calling this, ", <stored value>)" should be written to the output stream to complete the
// function call.
void outputStoreFunctionCallPrefix(TIntermTyped *node);
// This writes the function call to load a SSBO value to the output stream.
void outputLoadFunctionCall(TIntermTyped *node);
// This writes the function call to get the lengh of unsized array member of SSBO.
void outputLengthFunctionCall(TIntermTyped *node);
// Writes the atomic memory function calls for SSBO.
void outputAtomicMemoryFunctionCallPrefix(TIntermTyped *node, TOperator op);
void writeShaderStorageBlocksHeader(GLenum shaderType, TInfoSinkBase &out) const;
private:
void traverseSSBOAccess(TIntermTyped *node, SSBOMethod method);
TIntermTyped *traverseNode(TInfoSinkBase &out,
TIntermTyped *node,
BlockMemberInfo *blockMemberInfo);
int getMatrixStride(TIntermTyped *node,
TLayoutBlockStorage storage,
bool rowMajor,
bool *isRowMajor) const;
TIntermTyped *writeEOpIndexDirectOrIndirectOutput(TInfoSinkBase &out,
TIntermBinary *node,
BlockMemberInfo *blockMemberInfo);
// Common part in dot operations.
TIntermTyped *createFieldOffset(const TField *field, BlockMemberInfo *blockMemberInfo);
void collectShaderStorageBlocks(TIntermTyped *node);
OutputHLSL *mOutputHLSL;
ShaderStorageBlockFunctionHLSL *mSSBOFunctionHLSL;
ResourcesHLSL *mResourcesHLSL;
ReferencedInterfaceBlocks mReferencedShaderStorageBlocks;
BlockMemberInfoMap mBlockMemberInfoMap;
const std::vector<InterfaceBlock> &mShaderStorageBlocks;
};
} // namespace sh
#endif // COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKOUTPUTHLSL_H_
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