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

• Show log

  Commit

• Hash : 75782629
  Author :
  Date : 2015-09-25T11:28:50
  

  Fix possible compiler errors on linux
  
  Change-Id: Ifc45446c749690eddc406f66f144304262f04664
  Reviewed-on: https://chromium-review.googlesource.com/302478
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Tested-by: Corentin Wallez <cwallez@chromium.org>
  

Download

• src/compiler/translator/blocklayout.h

• //
  // Copyright (c) 2013-2014 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_BLOCKLAYOUT_H_
  #define COMMON_BLOCKLAYOUT_H_
  
  #include <cstddef>
  #include <vector>
  
  #include "angle_gl.h"
  #include <GLSLANG/ShaderLang.h>
  
  namespace sh
  {
  struct ShaderVariable;
  struct InterfaceBlockField;
  struct Uniform;
  struct Varying;
  struct InterfaceBlock;
  
  struct COMPILER_EXPORT BlockMemberInfo
  {
      BlockMemberInfo() : offset(-1), arrayStride(-1), matrixStride(-1), isRowMajorMatrix(false) {}
  
      BlockMemberInfo(int offset, int arrayStride, int matrixStride, bool isRowMajorMatrix)
          : offset(offset),
            arrayStride(arrayStride),
            matrixStride(matrixStride),
            isRowMajorMatrix(isRowMajorMatrix)
      {}
  
      static BlockMemberInfo getDefaultBlockInfo()
      {
          return BlockMemberInfo(-1, -1, -1, false);
      }
  
      int offset;
      int arrayStride;
      int matrixStride;
      bool isRowMajorMatrix;
  };
  
  class COMPILER_EXPORT BlockLayoutEncoder
  {
    public:
      BlockLayoutEncoder();
      virtual ~BlockLayoutEncoder() {}
  
      BlockMemberInfo encodeType(GLenum type, unsigned int arraySize, bool isRowMajorMatrix);
  
      size_t getBlockSize() const { return mCurrentOffset * BytesPerComponent; }
      size_t getCurrentRegister() const { return mCurrentOffset / ComponentsPerRegister; }
      size_t getCurrentElement() const { return mCurrentOffset % ComponentsPerRegister; }
  
      virtual void enterAggregateType() = 0;
      virtual void exitAggregateType() = 0;
  
      static const size_t BytesPerComponent = 4u;
      static const unsigned int ComponentsPerRegister = 4u;
  
      static size_t getBlockRegister(const BlockMemberInfo &info);
      static size_t getBlockRegisterElement(const BlockMemberInfo &info);
  
    protected:
      size_t mCurrentOffset;
  
      void nextRegister();
  
      virtual void getBlockLayoutInfo(GLenum type, unsigned int arraySize, bool isRowMajorMatrix, int *arrayStrideOut, int *matrixStrideOut) = 0;
      virtual void advanceOffset(GLenum type, unsigned int arraySize, bool isRowMajorMatrix, int arrayStride, int matrixStride) = 0;
  };
  
  // Block layout according to the std140 block layout
  // See "Standard Uniform Block Layout" in Section 2.11.6 of the OpenGL ES 3.0 specification
  
  class COMPILER_EXPORT Std140BlockEncoder : public BlockLayoutEncoder
  {
    public:
      Std140BlockEncoder();
  
      void enterAggregateType() override;
      void exitAggregateType() override;
  
    protected:
      void getBlockLayoutInfo(GLenum type,
                              unsigned int arraySize,
                              bool isRowMajorMatrix,
                              int *arrayStrideOut,
                              int *matrixStrideOut) override;
      void advanceOffset(GLenum type,
                         unsigned int arraySize,
                         bool isRowMajorMatrix,
                         int arrayStride,
                         int matrixStride) override;
  };
  
  }
  
  #endif // COMMON_BLOCKLAYOUT_H_
  

Download