kc3-lang/angle/src/compiler/translator/ShaderStorageBlockOutputHLSL.h

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• Hash : ac8e1196
  Author :
  Date : 2021-03-20T11:29:50
  

  SSBO handling rewrite.
  
  The basic idea is to replace the current SSBO output traversal by build
  a new AST for the Load and Store subtrees, then traverse that AST with
  the regular OutputHLSL traversal.
  
  This way, all the paren balancing and state management can go away.
  
  BUG: angleproject:5734
  Change-Id: I14d2fecd724d7419fbc9315fad4e9202a741b03f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2773401
  Commit-Queue: Stephen White <senorblanco@chromium.org>
  Reviewed-by: Jiajia Qin <jiajia.qin@intel.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/ShaderStorageBlockOutputHLSL.h

• //
  // 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(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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