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

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• Hash : 95faa233
  Author :
  Date : 2016-06-07T14:01:53
  

  Do not apply UNPACK_SKIP_IMAGES for 2D textures on D3D
  
  Resubmitted with test skip added for Intel OpenGL.
  
  GLES 3.0.4 section 3.8.3:
  
  "For the purposes of decoding the texture image, TexImage2D is
  equivalent to calling TexImage3D with corresponding arguments and
  depth of 1, except that UNPACK_SKIP_IMAGES is ignored."
  
  An "applySkipImages" boolean parameter is added to the functions in
  the D3D backend that apply skip offset to the unpack pointer. In case
  2D texture data is uploaded, the parameter is set to false and
  UNPACK_SKIP_IMAGES is not applied.
  
  BUG=angleproject:1406
  TEST=angle_end2end_tests
  
  Change-Id: I5878439e3d38dbae89cc2452a056c2d6bbf9e0b3
  Reviewed-on: https://chromium-review.googlesource.com/351330
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  

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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; }
      bool is3D() const;
  
      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;
      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 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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