kc3-lang/angle/src/libANGLE/ImageIndex.h

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• Hash : 831b1953
  Author :
  Date : 2015-05-05T11:02:27
  

  Move the IndexRangeCache and Range types to the gl namespace.
  
  BUG=angleproject:881
  
  Change-Id: Ib05149facee9fcc7714cb957ca8647b3498a36b6
  Reviewed-on: https://chromium-review.googlesource.com/269254
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Brandon Jones <bajones@chromium.org>
  

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• src/libANGLE/ImageIndex.h

• //
  // Copyright 2014 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.
  //
  
  // ImageIndex.h: A helper struct for indexing into an Image array
  
  #ifndef LIBANGLE_IMAGE_INDEX_H_
  #define LIBANGLE_IMAGE_INDEX_H_
  
  #include "common/mathutil.h"
  
  #include "angle_gl.h"
  
  namespace gl
  {
  
  class ImageIndexIterator;
  
  struct ImageIndex
  {
      GLenum type;
      GLint mipIndex;
      GLint layerIndex;
  
      ImageIndex(const ImageIndex &other);
      ImageIndex &operator=(const ImageIndex &other);
  
      bool hasLayer() const { return layerIndex != ENTIRE_LEVEL; }
  
      static ImageIndex Make2D(GLint mipIndex);
      static ImageIndex MakeCube(GLenum target, GLint mipIndex);
      static ImageIndex Make2DArray(GLint mipIndex, GLint layerIndex);
      static ImageIndex Make3D(GLint mipIndex, GLint layerIndex = ENTIRE_LEVEL);
      static ImageIndex MakeGeneric(GLenum target, GLint mipIndex);
  
      static ImageIndex MakeInvalid();
  
      static const GLint ENTIRE_LEVEL = static_cast<GLint>(-1);
  
      bool operator<(const ImageIndex &other) const;
  
    private:
      friend class ImageIndexIterator;
  
      ImageIndex(GLenum typeIn, GLint mipIndexIn, GLint layerIndexIn);
  };
  
  class ImageIndexIterator
  {
    public:
      static ImageIndexIterator Make2D(GLint minMip, GLint maxMip);
      static ImageIndexIterator MakeCube(GLint minMip, GLint maxMip);
      static ImageIndexIterator Make3D(GLint minMip, GLint maxMip, GLint minLayer, GLint maxLayer);
      static ImageIndexIterator Make2DArray(GLint minMip, GLint maxMip, const GLsizei *layerCounts);
  
      ImageIndex next();
      ImageIndex current() const;
      bool hasNext() const;
  
    private:
  
      ImageIndexIterator(GLenum type, const Range<GLint> &mipRange,
                         const Range<GLint> &layerRange, const GLsizei *layerCounts);
  
      GLint maxLayer() const;
  
      GLenum mType;
      Range<GLint> mMipRange;
      Range<GLint> mLayerRange;
      const GLsizei *mLayerCounts;
      GLint mCurrentMip;
      GLint mCurrentLayer;
  };
  
  }
  
  #endif // LIBANGLE_IMAGE_INDEX_H_
  

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