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

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• Hash : 74ba598f
  Author :
  Date : 2018-03-13T11:22:16
  

  Fix cubemap robust resource init for GenerateMipmap
  
  The code in gl::Texture would only check whether the first cube map face
  is correctly initialized but not for the others.
  
  BUG=angleproject:2169
  
  Change-Id: Ib565579a4570e731da785b5c74c8d1a6511ebcd4
  Reviewed-on: https://chromium-review.googlesource.com/960571
  Commit-Queue: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@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 "libANGLE/PackedGLEnums.h"
  
  #include "angle_gl.h"
  
  namespace gl
  {
  
  class ImageIndexIterator;
  
  struct ImageIndex
  {
      TextureType type;
      TextureTarget target;
  
      GLint mipIndex;
  
      GLint layerIndex;
      GLint numLayers;
  
      ImageIndex(const ImageIndex &other);
      ImageIndex &operator=(const ImageIndex &other);
  
      bool hasLayer() const { return layerIndex != ENTIRE_LEVEL; }
      bool is3D() const;
      GLint cubeMapFaceIndex() const;
      bool valid() const;
  
      static ImageIndex Make2D(GLint mipIndex);
      static ImageIndex MakeRectangle(GLint mipIndex);
      static ImageIndex MakeCube(TextureTarget target, GLint mipIndex);
      static ImageIndex Make2DArray(GLint mipIndex, GLint layerIndex);
      static ImageIndex Make2DArrayRange(GLint mipIndex, GLint layerIndex, GLint numLayers);
      static ImageIndex Make3D(GLint mipIndex, GLint layerIndex = ENTIRE_LEVEL);
      static ImageIndex MakeGeneric(TextureTarget target, GLint mipIndex);
      static ImageIndex Make2DMultisample();
  
      static ImageIndex MakeInvalid();
  
      static const GLint ENTIRE_LEVEL = static_cast<GLint>(-1);
  
    private:
      friend class ImageIndexIterator;
  
      ImageIndex(TextureType typeIn,
                 TextureTarget targetIn,
                 GLint mipIndexIn,
                 GLint layerIndexIn,
                 GLint numLayersIn);
  };
  
  bool operator<(const ImageIndex &a, const ImageIndex &b);
  bool operator==(const ImageIndex &a, const ImageIndex &b);
  bool operator!=(const ImageIndex &a, const ImageIndex &b);
  
  // To be used like this:
  //
  // ImageIndexIterator it = ...;
  // while (it.hasNext())
  // {
  //     ImageIndex current = it.next();
  // }
  class ImageIndexIterator
  {
    public:
      ImageIndexIterator(const ImageIndexIterator &other);
  
      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();
      static ImageIndexIterator MakeGeneric(TextureType type, GLint minMip, GLint maxMip);
  
      ImageIndex next();
      ImageIndex current() const;
      bool hasNext() const;
  
    private:
      ImageIndexIterator(TextureType type,
                         angle::EnumIterator<TextureTarget> targetLow,
                         angle::EnumIterator<TextureTarget> targetHigh,
                         const Range<GLint> &mipRange,
                         const Range<GLint> &layerRange,
                         const GLsizei *layerCounts);
  
      GLint maxLayer() const;
  
      const angle::EnumIterator<TextureTarget> mTargetLow;
      const angle::EnumIterator<TextureTarget> mTargetHigh;
      const Range<GLint> mMipRange;
      const Range<GLint> mLayerRange;
      const GLsizei *const mLayerCounts;
  
      ImageIndex mCurrentIndex;
  };
  
  }
  
  #endif // LIBANGLE_IMAGE_INDEX_H_
  

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