kc3-lang/angle/src/libGLESv2/formatutils.h

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• Hash : 5d601382
  Author :
  Date : 2014-07-22T15:14:06
  

  Simplify formatutils.h by exposing the info structures.
  
  Removed all the separate query functions and simply expose the internal
  info structures.  This reduces the number of std::map/std::set operations
  that were hidden behind the API.
  
  Moved the validation tables for ES3 format combinations and effective
  internal formats into validationES3.cpp so that formatutils.h only has
  generic GL format queries.
  
  BUG=angle:658
  
  Change-Id: Ieb60d42b8eafcdb4f21dcbec130b39478ce5f7c5
  Reviewed-on: https://chromium-review.googlesource.com/206835
  Reviewed-by: Nicolas Capens <capn@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libGLESv2/formatutils.h

• //
  // Copyright (c) 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.
  //
  
  // formatutils.h: Queries for GL image formats.
  
  #ifndef LIBGLESV2_FORMATUTILS_H_
  #define LIBGLESV2_FORMATUTILS_H_
  
  #include "angle_gl.h"
  
  #include "libGLESv2/Caps.h"
  #include "libGLESv2/angletypes.h"
  
  #include <cstddef>
  
  typedef void (*MipGenerationFunction)(size_t sourceWidth, size_t sourceHeight, size_t sourceDepth,
                                        const uint8_t *sourceData, size_t sourceRowPitch, size_t sourceDepthPitch,
                                        uint8_t *destData, size_t destRowPitch, size_t destDepthPitch);
  
  typedef void (*LoadImageFunction)(size_t width, size_t height, size_t depth,
                                    const uint8_t *input, size_t inputRowPitch, size_t inputDepthPitch,
                                    uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch);
  
  typedef void (*InitializeTextureDataFunction)(size_t width, size_t height, size_t depth,
                                                uint8_t *output, size_t outputRowPitch, size_t outputDepthPitch);
  
  typedef void (*ColorReadFunction)(const void *source, void *dest);
  typedef void (*ColorWriteFunction)(const void *source, void *dest);
  typedef void (*ColorCopyFunction)(const void *source, void *dest);
  
  typedef void (*VertexCopyFunction)(const void *input, size_t stride, size_t count, void *output);
  
  namespace gl
  {
  
  struct FormatType
  {
      FormatType();
  
      GLenum internalFormat;
      ColorWriteFunction colorWriteFunction;
  };
  const FormatType &GetFormatTypeInfo(GLenum format, GLenum type);
  
  struct Type
  {
      Type();
  
      GLuint bytes;
      bool specialInterpretation;
  };
  const Type &GetTypeInfo(GLenum type);
  
  struct InternalFormat
  {
      InternalFormat();
  
      GLuint redBits;
      GLuint greenBits;
      GLuint blueBits;
  
      GLuint luminanceBits;
  
      GLuint alphaBits;
      GLuint sharedBits;
  
      GLuint depthBits;
      GLuint stencilBits;
  
      GLuint pixelBytes;
  
      GLuint componentCount;
  
      bool compressed;
      GLuint compressedBlockWidth;
      GLuint compressedBlockHeight;
  
      GLenum format;
      GLenum type;
  
      GLenum componentType;
      GLenum colorEncoding;
  
      typedef bool (*SupportCheckFunction)(GLuint, const Extensions &);
      SupportCheckFunction textureSupport;
      SupportCheckFunction renderSupport;
      SupportCheckFunction filterSupport;
  
      GLuint computeRowPitch(GLenum type, GLsizei width, GLint alignment) const;
      GLuint computeDepthPitch(GLenum type, GLsizei width, GLsizei height, GLint alignment) const;
      GLuint computeBlockSize(GLenum type, GLsizei width, GLsizei height) const;
  };
  const InternalFormat &GetInternalFormatInfo(GLenum internalFormat);
  
  GLenum GetSizedInternalFormat(GLenum internalFormat, GLenum type);
  
  typedef std::set<GLenum> FormatSet;
  const FormatSet &GetAllSizedInternalFormats();
  
  }
  
  #endif LIBGLESV2_FORMATUTILS_H_
  

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