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

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• Hash : d9cd7b7f
  Author :
  Date : 2017-08-30T15:04:25
  

  ES31: Add glGetProgramInterfaceiv API
  
  Add API entry and validation checks(GLES 3.1 section 7.3).
  Add the first 4 interfaces(PROGRAM_INPUT, PROGRAM_OUTPUT,
  UNIFORM and UNIFORM_BLOCK) implementation.
  
  BUG=angleproject:1920
  TEST=angle_end2end_tests:ProgramInterfaceTestES31.*
  
  Change-Id: Iab80ba332e2a5e2b3e677039359e60a420e3d6b0
  Reviewed-on: https://chromium-review.googlesource.com/642729
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@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 "angle_gl.h"
  #include <string>
  #include <math.h>
  
  #include "common/mathutil.h"
  
  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);
  GLenum SamplerTypeToTextureType(GLenum samplerType);
  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);
  
  static const GLenum FirstCubeMapTextureTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X;
  static const GLenum LastCubeMapTextureTarget = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
  bool IsCubeMapTextureTarget(GLenum target);
  size_t CubeMapTextureTargetToLayerIndex(GLenum target);
  GLenum LayerIndexToCubeMapTextureTarget(size_t index);
  
  // Parse the base resource name and array index.  Returns the base name of the resource.
  // outSubscript is set to GL_INVALID_INDEX if the provided name is not an array or the array index
  // is invalid.
  std::string ParseResourceName(const std::string &name, size_t *outSubscript);
  
  // 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);
  
  // [OpenGL ES 3.0.2] Section 2.3.1 page 14
  // Data Conversion For State-Setting Commands
  // Floating-point values are rounded to the nearest integer, instead of truncated, as done by static_cast.
  template <typename outT> outT iround(GLfloat value) { return static_cast<outT>(value > 0.0f ? floor(value + 0.5f) : ceil(value - 0.5f)); }
  template <typename outT> outT uiround(GLfloat value) { return static_cast<outT>(value + 0.5f); }
  
  // Helper for converting arbitrary GL types to other GL types used in queries and state setting
  
  // TODO(jie.a.chen@intel.com): Add the conversion rule for all helpers as the spec requires:
  // "If a value is so large in magnitude that it cannot be represented with the requested type,"
  // "then the nearest value representable using the requested type is returned."
  
  template <typename ParamType>
  GLuint ConvertToGLuint(ParamType param)
  {
      return static_cast<GLuint>(param);
  }
  template <>
  GLuint ConvertToGLuint(GLfloat param);
  
  template <typename ParamType>
  GLint ConvertToGLint(ParamType param)
  {
      return static_cast<GLint>(param);
  }
  
  template <>
  GLint ConvertToGLint(uint32_t param);
  
  template <>
  GLint ConvertToGLint(uint64_t param);
  
  template <>
  GLint ConvertToGLint(GLfloat param);
  
  // Same conversion as uint
  template <typename ParamType>
  GLenum ConvertToGLenum(ParamType param)
  {
      return static_cast<GLenum>(ConvertToGLuint(param));
  }
  
  template <typename ParamType>
  GLfloat ConvertToGLfloat(ParamType param)
  {
      return static_cast<GLfloat>(param);
  }
  
  template <typename ParamType>
  ParamType ConvertFromGLfloat(GLfloat param)
  {
      return static_cast<ParamType>(param);
  }
  template <>
  GLint ConvertFromGLfloat(GLfloat param);
  template <>
  GLuint ConvertFromGLfloat(GLfloat param);
  
  template <typename ParamType>
  ParamType ConvertFromGLenum(GLenum param)
  {
      return static_cast<ParamType>(param);
  }
  
  template <typename ParamType>
  ParamType ConvertFromGLuint(GLuint param)
  {
      return static_cast<ParamType>(param);
  }
  
  template <typename ParamType>
  ParamType ConvertFromGLint(GLint param)
  {
      return static_cast<ParamType>(param);
  }
  
  template <typename ParamType>
  ParamType ConvertFromGLboolean(GLboolean param)
  {
      return static_cast<ParamType>(param ? GL_TRUE : GL_FALSE);
  }
  
  template <typename ParamType>
  ParamType ConvertFromGLint64(GLint64 param)
  {
      return clampCast<ParamType>(param);
  }
  
  unsigned int ParseAndStripArrayIndex(std::string *name);
  
  struct UniformTypeInfo final : angle::NonCopyable
  {
      constexpr UniformTypeInfo(GLenum type,
                                GLenum componentType,
                                GLenum samplerTextureType,
                                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),
            samplerTextureType(samplerTextureType),
            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 samplerTextureType;
      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);
  
  }  // 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);
  }
  
  namespace egl_gl
  {
  GLenum EGLCubeMapTargetToGLCubeMapTarget(EGLenum eglTarget);
  GLenum EGLImageTargetToGLTextureTarget(EGLenum eglTarget);
  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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