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

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• Hash : a3944d4f
  Author :
  Date : 2016-07-22T22:13:26
  

  Add gl::Format to represent a texture/rb/surface format.
  
  This has a few advantages: it preserves all the information of the
  internal format, such as if it is sized or unsized. It also saves
  looking up the format multiple times in the table, which should
  improve speed in some cases.
  
  The extra sized-ness information will allow us to perform the
  correct validation in CopyTexSubImage calls.
  
  BUG=angleproject:1228
  
  Change-Id: I42954771b0a9a968f5d787b8cf6e0af721791855
  Reviewed-on: https://chromium-review.googlesource.com/362626
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/Image.h

• //
  // Copyright (c) 2015 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.
  //
  
  // Image.h: Defines the egl::Image class representing the EGLimage object.
  
  #ifndef LIBANGLE_IMAGE_H_
  #define LIBANGLE_IMAGE_H_
  
  #include "common/angleutils.h"
  #include "libANGLE/AttributeMap.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/RefCountObject.h"
  #include "libANGLE/formatutils.h"
  
  #include <set>
  
  namespace rx
  {
  class ImageImpl;
  }
  
  namespace egl
  {
  class Image;
  
  class ImageSibling : public RefCountObject
  {
    public:
      ImageSibling(GLuint id);
      virtual ~ImageSibling();
  
    protected:
      // Set the image target of this sibling
      void setTargetImage(egl::Image *imageTarget);
  
      // Orphan all EGL image sources and targets
      gl::Error orphanImages();
  
    private:
      friend class Image;
  
      // Called from Image only to add a new source image
      void addImageSource(egl::Image *imageSource);
  
      // Called from Image only to remove a source image when the Image is being deleted
      void removeImageSource(egl::Image *imageSource);
  
      std::set<Image *> mSourcesOf;
      BindingPointer<Image> mTargetOf;
  };
  
  class Image final : public RefCountObject
  {
    public:
      Image(rx::ImageImpl *impl, EGLenum target, ImageSibling *buffer, const AttributeMap &attribs);
      ~Image();
  
      const gl::Format &getFormat() const;
      size_t getWidth() const;
      size_t getHeight() const;
      size_t getSamples() const;
  
      rx::ImageImpl *getImplementation();
      const rx::ImageImpl *getImplementation() const;
  
    private:
      friend class ImageSibling;
  
      // Called from ImageSibling only notify the image that a new target sibling exists for state
      // tracking.
      void addTargetSibling(ImageSibling *sibling);
  
      // Called from ImageSibling only to notify the image that a sibling (source or target) has
      // been respecified and state tracking should be updated.
      gl::Error orphanSibling(ImageSibling *sibling);
  
      rx::ImageImpl *mImplementation;
  
      gl::Format mFormat;
      size_t mWidth;
      size_t mHeight;
      size_t mSamples;
  
      BindingPointer<ImageSibling> mSource;
      std::set<ImageSibling *> mTargets;
  };
  }
  
  #endif  // LIBANGLE_IMAGE_H_
  

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