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

• Show log

  Commit

• Hash : 13c0dd46
  Author :
  Date : 2017-07-04T18:27:01
  

  Add texture rectangle extension.
  
  This is needed to support binding IOSurfaces to textures on OSX. This
  commit adds support in the API and tests, but didn't need to implement
  compiler changes as it already supported ARB_texture_rectangle.
  
  Implementation of CHROMIUM_opy_texture for rectangle texture and the
  spec are left for follow-up commits.
  
  Change-Id: I45c66be763a9d3f6f619640f9f95f39b05c70867
  Reviewed-on: https://chromium-review.googlesource.com/559106
  Commit-Queue: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

Download

• 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; }
      bool is3D() const;
  
      static ImageIndex Make2D(GLint mipIndex);
      static ImageIndex MakeRectangle(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 Make2DMultisample();
  
      static ImageIndex MakeInvalid();
  
      static const GLint ENTIRE_LEVEL = static_cast<GLint>(-1);
  
      bool operator<(const ImageIndex &other) const;
      bool operator==(const ImageIndex &other) const;
      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 MakeRectangle(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);
      static ImageIndexIterator Make2DMultisample();
  
      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;
      void done();
  
      GLenum mType;
      Range<GLint> mMipRange;
      Range<GLint> mLayerRange;
      const GLsizei *mLayerCounts;
      GLint mCurrentMip;
      GLint mCurrentLayer;
  };
  
  }
  
  #endif // LIBANGLE_IMAGE_INDEX_H_
  

Download