kc3-lang/angle/src/common/utilities.h

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• Hash : 99d492c2
  Author :
  Date : 2018-02-27T15:17:10
  

  Use packed enums for the texture types and targets, part 2
  
  This completes the refactor by using the packed enums in the gl:: layer
  and in the backends.
  
  The packed enum code generation is modified to support explicitly
  assigning values to the packed enums so that the TextureTarget cube map
  faces are in the correct order and easy to iterate over.
  
  BUG=angleproject:2169
  
  Change-Id: I5903235e684ccf382e92a8a1e10c5c85b4b16a04
  Reviewed-on: https://chromium-review.googlesource.com/939994
  Commit-Queue: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/common/utilities.h

• //
  // Copyright (c) 2002-2013 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.
  //
  
  // utilities.h: Conversion functions and other utility routines.
  
  #ifndef COMMON_UTILITIES_H_
  #define COMMON_UTILITIES_H_
  
  #include <EGL/egl.h>
  #include <EGL/eglext.h>
  
  #include <math.h>
  #include <string>
  #include <vector>
  #include "angle_gl.h"
  
  #include "common/mathutil.h"
  
  namespace sh
  {
  struct ShaderVariable;
  }
  
  namespace gl
  {
  
  int VariableComponentCount(GLenum type);
  GLenum VariableComponentType(GLenum type);
  size_t VariableComponentSize(GLenum type);
  size_t VariableInternalSize(GLenum type);
  size_t VariableExternalSize(GLenum type);
  int VariableRowCount(GLenum type);
  int VariableColumnCount(GLenum type);
  bool IsSamplerType(GLenum type);
  bool IsImageType(GLenum type);
  bool IsAtomicCounterType(GLenum type);
  bool IsOpaqueType(GLenum type);
  bool IsMatrixType(GLenum type);
  GLenum TransposeMatrixType(GLenum type);
  int VariableRegisterCount(GLenum type);
  int MatrixRegisterCount(GLenum type, bool isRowMajorMatrix);
  int MatrixComponentCount(GLenum type, bool isRowMajorMatrix);
  int VariableSortOrder(GLenum type);
  GLenum VariableBoolVectorType(GLenum type);
  
  int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize);
  
  // Parse the base resource name and array indices. Returns the base name of the resource.
  // If the provided name doesn't index an array, the outSubscripts vector will be empty.
  // If the provided name indexes an array, the outSubscripts vector will contain indices with
  // outermost array indices in the back. If an array index is invalid, GL_INVALID_INDEX is added to
  // outSubscripts.
  std::string ParseResourceName(const std::string &name, std::vector<unsigned int> *outSubscripts);
  
  // Find the child field which matches 'fullName' == var.name + "." + field.name.
  // Return nullptr if not found.
  const sh::ShaderVariable *FindShaderVarField(const sh::ShaderVariable &var,
                                               const std::string &fullName);
  
  // Find the range of index values in the provided indices pointer.  Primitive restart indices are
  // only counted in the range if primitive restart is disabled.
  IndexRange ComputeIndexRange(GLenum indexType,
                               const GLvoid *indices,
                               size_t count,
                               bool primitiveRestartEnabled);
  
  // Get the primitive restart index value for the given index type.
  GLuint GetPrimitiveRestartIndex(GLenum indexType);
  
  bool IsTriangleMode(GLenum drawMode);
  bool IsIntegerFormat(GLenum unsizedFormat);
  
  // Returns the product of the sizes in the vector, or 1 if the vector is empty. Doesn't currently
  // perform overflow checks.
  unsigned int ArraySizeProduct(const std::vector<unsigned int> &arraySizes);
  
  // Return the array index at the end of name, and write the length of name before the final array
  // index into nameLengthWithoutArrayIndexOut. In case name doesn't include an array index, return
  // GL_INVALID_INDEX and write the length of the original string.
  unsigned int ParseArrayIndex(const std::string &name, size_t *nameLengthWithoutArrayIndexOut);
  
  struct UniformTypeInfo final : angle::NonCopyable
  {
      constexpr UniformTypeInfo(GLenum type,
                                GLenum componentType,
                                GLenum textureType,
                                GLenum transposedMatrixType,
                                GLenum boolVectorType,
                                int rowCount,
                                int columnCount,
                                int componentCount,
                                size_t componentSize,
                                size_t internalSize,
                                size_t externalSize,
                                bool isSampler,
                                bool isMatrixType,
                                bool isImageType)
          : type(type),
            componentType(componentType),
            textureType(textureType),
            transposedMatrixType(transposedMatrixType),
            boolVectorType(boolVectorType),
            rowCount(rowCount),
            columnCount(columnCount),
            componentCount(componentCount),
            componentSize(componentSize),
            internalSize(internalSize),
            externalSize(externalSize),
            isSampler(isSampler),
            isMatrixType(isMatrixType),
            isImageType(isImageType)
      {
      }
  
      GLenum type;
      GLenum componentType;
      GLenum textureType;
      GLenum transposedMatrixType;
      GLenum boolVectorType;
      int rowCount;
      int columnCount;
      int componentCount;
      size_t componentSize;
      size_t internalSize;
      size_t externalSize;
      bool isSampler;
      bool isMatrixType;
      bool isImageType;
  };
  
  const UniformTypeInfo &GetUniformTypeInfo(GLenum uniformType);
  
  const char *GetGenericErrorMessage(GLenum error);
  
  unsigned int ElementTypeSize(GLenum elementType);
  
  }  // namespace gl
  
  namespace egl
  {
  static const EGLenum FirstCubeMapTextureTarget = EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
  static const EGLenum LastCubeMapTextureTarget = EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR;
  bool IsCubeMapTextureTarget(EGLenum target);
  size_t CubeMapTextureTargetToLayerIndex(EGLenum target);
  EGLenum LayerIndexToCubeMapTextureTarget(size_t index);
  bool IsTextureTarget(EGLenum target);
  bool IsRenderbufferTarget(EGLenum target);
  
  const char *GetGenericErrorMessage(EGLint error);
  }  // namespace egl
  
  namespace egl_gl
  {
  GLuint EGLClientBufferToGLObjectHandle(EGLClientBuffer buffer);
  }
  
  namespace gl_egl
  {
  EGLenum GLComponentTypeToEGLColorComponentType(GLenum glComponentType);
  }  // namespace gl_egl
  
  #if !defined(ANGLE_ENABLE_WINDOWS_STORE)
  std::string getTempPath();
  void writeFile(const char* path, const void* data, size_t size);
  #endif
  
  #if defined (ANGLE_PLATFORM_WINDOWS)
  void ScheduleYield();
  #endif
  
  #endif  // COMMON_UTILITIES_H_
  

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