kc3-lang/angle/src/libANGLE/renderer/renderer_utils.h

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• Hash : d2b50a0b
  Author :
  Date : 2016-06-09T00:13:35
  

  Move ReadPixels logic to helper methods.
  
  These routines were pretty much duplicated between D3D9 and D3D11.
  Since I was going to have to rewrite them again for Vulkan, I
  figured it would be best to move them into a common location and
  clean them up a bit.
  
  BUG=angleproject:1319
  
  Change-Id: I15d39b052daf3e1020dbd0880f01ae84f3686a0a
  Reviewed-on: https://chromium-review.googlesource.com/349630
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/renderer_utils.h

• //
  // Copyright 2016 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.
  //
  // renderer_utils:
  //   Helper methods pertaining to most or all back-ends.
  //
  
  #ifndef LIBANGLE_RENDERER_RENDERER_UTILS_H_
  #define LIBANGLE_RENDERER_RENDERER_UTILS_H_
  
  #include <cstdint>
  
  #include <map>
  
  #include "libANGLE/angletypes.h"
  
  namespace gl
  {
  struct FormatType;
  struct InternalFormat;
  }
  
  namespace rx
  {
  
  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 std::map<gl::FormatType, ColorCopyFunction> FastCopyFunctionMap;
  
  struct PackPixelsParams
  {
      PackPixelsParams();
      PackPixelsParams(const gl::Rectangle &area,
                       GLenum format,
                       GLenum type,
                       GLuint outputPitch,
                       const gl::PixelPackState &pack,
                       ptrdiff_t offset);
  
      gl::Rectangle area;
      GLenum format;
      GLenum type;
      GLuint outputPitch;
      gl::Buffer *packBuffer;
      gl::PixelPackState pack;
      ptrdiff_t offset;
  };
  
  void PackPixels(const PackPixelsParams &params,
                  const gl::InternalFormat &sourceFormatInfo,
                  const FastCopyFunctionMap &fastCopyFunctionsMap,
                  ColorReadFunction colorReadFunction,
                  int inputPitch,
                  const uint8_t *source,
                  uint8_t *destination);
  
  ColorWriteFunction GetColorWriteFunction(const gl::FormatType &formatType);
  ColorCopyFunction GetFastCopyFunction(const FastCopyFunctionMap &fastCopyFunctions,
                                        const gl::FormatType &formatType);
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_RENDERER_UTILS_H_
  

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