kc3-lang/angle/src/compiler/translator/hlsl/blocklayoutHLSL.h

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• Hash : 9b63700b
  Author :
  Date : 2023-07-11T10:25:40
  

  Translator: Reorganize files
  
  This change makes the translator files more organized by:
  
  - Grouping files that are specific to a certain output under their own
    directory,
  - Moving transformations under tree_ops
  - Removing Direct from metal translation now that that SPIR-V Cross path
    is removed
  
  Bug: angleproject:6394
  Change-Id: Iaf5bb8d5604b84748dece029821b1f77b2813967
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4678780
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/compiler/translator/hlsl/blocklayoutHLSL.h

• //
  // Copyright 2013 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.
  //
  // blocklayout.h:
  //   Methods and classes related to uniform layout and packing in GLSL and HLSL.
  //
  
  #ifndef COMMON_BLOCKLAYOUTHLSL_H_
  #define COMMON_BLOCKLAYOUTHLSL_H_
  
  #include <cstddef>
  #include <vector>
  
  #include <GLSLANG/ShaderLang.h>
  #include "angle_gl.h"
  #include "compiler/translator/blocklayout.h"
  
  namespace sh
  {
  // Block layout packed according to the D3D9 or default D3D10+ register packing rules
  // See http://msdn.microsoft.com/en-us/library/windows/desktop/bb509632(v=vs.85).aspx
  // The strategy should be ENCODE_LOOSE for D3D9 constant blocks, and ENCODE_PACKED
  // for everything else (D3D10+ constant blocks and all attributes/varyings).
  
  class HLSLBlockEncoder : public BlockLayoutEncoder
  {
    public:
      enum HLSLBlockEncoderStrategy
      {
          ENCODE_PACKED,
          ENCODE_LOOSE
      };
  
      HLSLBlockEncoder(HLSLBlockEncoderStrategy strategy, bool transposeMatrices);
  
      void enterAggregateType(const ShaderVariable &structVar) override;
      void exitAggregateType(const ShaderVariable &structVar) override;
      void skipRegisters(unsigned int numRegisters);
  
      bool isPacked() const { return mEncoderStrategy == ENCODE_PACKED; }
  
      static HLSLBlockEncoderStrategy GetStrategyFor(ShShaderOutput outputType);
  
    protected:
      void getBlockLayoutInfo(GLenum type,
                              const std::vector<unsigned int> &arraySizes,
                              bool isRowMajorMatrix,
                              int *arrayStrideOut,
                              int *matrixStrideOut) override;
      void advanceOffset(GLenum type,
                         const std::vector<unsigned int> &arraySizes,
                         bool isRowMajorMatrix,
                         int arrayStride,
                         int matrixStride) override;
  
      HLSLBlockEncoderStrategy mEncoderStrategy;
      bool mTransposeMatrices;
  };
  
  // This method returns the number of used registers for a ShaderVariable. It is dependent on the
  // HLSLBlockEncoder class to count the number of used registers in a struct (which are individually
  // packed according to the same rules).
  unsigned int HLSLVariableRegisterCount(const ShaderVariable &variable, ShShaderOutput outputType);
  }  // namespace sh
  
  #endif  // COMMON_BLOCKLAYOUTHLSL_H_
  

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