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

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• Author : Geoff Lang
  Date : 2014-07-09 16:22:55
  Hash : 268b6bcd
  Message : Clean up copyimage.h Change-Id: Ie4b81bb37dbbe6a9584dfc6a6c92670a9b73cda5 Reviewed-on: https://chromium-review.googlesource.com/207374 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• 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 uint8_t *source, uint8_t *dest);
  typedef void (*ColorWriteFunction)(const uint8_t *source, uint8_t *dest);
  typedef void (*ColorCopyFunction)(const uint8_t *source, uint8_t *dest);
  
  typedef void (*VertexCopyFunction)(const uint8_t *input, size_t stride, size_t count, uint8_t *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_