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

• Show log

  Commit

• Hash : e703c606
  Author :
  Date : 2018-02-20T10:21:48
  

  Add gl::RenderbufferState shared state helper.
  
  This shared state will be read-only visible in the RenderbufferImpl
  class. It mirrors existing structs for Textures, Buffers, and other
  classes. It allows the implementation class to have a read-only view
  as to the current GL state of an object.
  
  This will be useful to the Vulkan back-end, which would like to know
  the current Renderbuffer state before having to redefine the storage.
  If the current parameters match, it might not have to redefine the
  storage at all.
  
  The solution involves passing around the gl::RenderbufferState
  through various factory methods.
  
  Also name the Renderbuffer implementation pointer consistently and
  make it use std::unique_ptr.
  
  Bug: angleproject:2347
  Change-Id: Ied6e0358e24e74a7fedbe4aea692edee909b5838
  Reviewed-on: https://chromium-review.googlesource.com/922457
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

Download

• src/libANGLE/Renderbuffer.h

• //
  // Copyright (c) 2002-2010 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.
  //
  
  // Renderbuffer.h: Defines the renderer-agnostic container class gl::Renderbuffer.
  // Implements GL renderbuffer objects and related functionality.
  // [OpenGL ES 2.0.24] section 4.4.3 page 108.
  
  #ifndef LIBANGLE_RENDERBUFFER_H_
  #define LIBANGLE_RENDERBUFFER_H_
  
  #include "angle_gl.h"
  #include "common/angleutils.h"
  #include "libANGLE/Debug.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/FramebufferAttachment.h"
  #include "libANGLE/Image.h"
  #include "libANGLE/formatutils.h"
  #include "libANGLE/renderer/RenderbufferImpl.h"
  
  namespace rx
  {
  class GLImplFactory;
  }  // namespace rx
  
  namespace gl
  {
  // A GL renderbuffer object is usually used as a depth or stencil buffer attachment
  // for a framebuffer object. The renderbuffer itself is a distinct GL object, see
  // FramebufferAttachment and Framebuffer for how they are applied to an FBO via an
  // attachment point.
  
  class RenderbufferState final : angle::NonCopyable
  {
    public:
      RenderbufferState();
      ~RenderbufferState();
  
      GLsizei getWidth() const;
      GLsizei getHeight() const;
      const Format &getFormat() const;
      GLsizei getSamples() const;
  
    private:
      friend class Renderbuffer;
  
      void update(GLsizei width,
                  GLsizei height,
                  const Format &format,
                  GLsizei samples,
                  InitState initState);
  
      GLsizei mWidth;
      GLsizei mHeight;
      Format mFormat;
      GLsizei mSamples;
  
      // For robust resource init.
      InitState mInitState;
  };
  
  class Renderbuffer final : public egl::ImageSibling,
                             public LabeledObject
  {
    public:
      Renderbuffer(rx::GLImplFactory *implFactory, GLuint id);
      ~Renderbuffer() override;
  
      Error onDestroy(const Context *context) override;
  
      void setLabel(const std::string &label) override;
      const std::string &getLabel() const override;
  
      Error setStorage(const Context *context, GLenum internalformat, size_t width, size_t height);
      Error setStorageMultisample(const Context *context,
                                  size_t samples,
                                  GLenum internalformat,
                                  size_t width,
                                  size_t height);
      Error setStorageEGLImageTarget(const Context *context, egl::Image *imageTarget);
  
      rx::RenderbufferImpl *getImplementation() const;
  
      GLsizei getWidth() const;
      GLsizei getHeight() const;
      const Format &getFormat() const;
      GLsizei getSamples() const;
      GLuint getRedSize() const;
      GLuint getGreenSize() const;
      GLuint getBlueSize() const;
      GLuint getAlphaSize() const;
      GLuint getDepthSize() const;
      GLuint getStencilSize() const;
  
      // FramebufferAttachmentObject Impl
      Extents getAttachmentSize(const ImageIndex &imageIndex) const override;
      const Format &getAttachmentFormat(GLenum binding, const ImageIndex &imageIndex) const override;
      GLsizei getAttachmentSamples(const ImageIndex &imageIndex) const override;
  
      void onAttach(const Context *context) override;
      void onDetach(const Context *context) override;
      GLuint getId() const override;
  
      InitState initState(const ImageIndex &imageIndex) const override;
      void setInitState(const ImageIndex &imageIndex, InitState initState) override;
  
    private:
      rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const override;
  
      RenderbufferState mState;
      std::unique_ptr<rx::RenderbufferImpl> mImplementation;
  
      std::string mLabel;
  };
  
  }  // namespace gl
  
  #endif   // LIBANGLE_RENDERBUFFER_H_
  

Download