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

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• Hash : f703443b
  Author :
  Date : 2019-09-21T14:10:35
  

  Use Resource IDs in RefCountObject.
  
  This lets us use strongly typed IDs pretty much everywhere. Only one or
  two additional places still use GLuint IDs. Mostly for external queries
  and for Framebuffer Attachments.
  
  With some clever type reflection helpers lets us define a single
  template function for handling operator== and != for resource IDs.
  
  Refactor in preparation for more Capture/Replay work.
  
  Bug: angleproject:3611
  Change-Id: I1c0c848e89eb8a4b769714d57686f816daf01634
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1815550
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tobin Ehlis <tobine@google.com>
  

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• src/libANGLE/Renderbuffer.h

• //
  // Copyright 2002 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 RefCountObject<RenderbufferID>,
                             public egl::ImageSibling,
                             public LabeledObject
  {
    public:
      Renderbuffer(rx::GLImplFactory *implFactory, RenderbufferID id);
      ~Renderbuffer() override;
  
      void onDestroy(const Context *context) override;
  
      void setLabel(const Context *context, const std::string &label) override;
      const std::string &getLabel() const override;
  
      angle::Result setStorage(const Context *context,
                               GLenum internalformat,
                               size_t width,
                               size_t height);
      angle::Result setStorageMultisample(const Context *context,
                                          size_t samples,
                                          GLenum internalformat,
                                          size_t width,
                                          size_t height);
      angle::Result 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;
  
      GLint getMemorySize() const;
  
      // FramebufferAttachmentObject Impl
      Extents getAttachmentSize(const ImageIndex &imageIndex) const override;
      Format getAttachmentFormat(GLenum binding, const ImageIndex &imageIndex) const override;
      GLsizei getAttachmentSamples(const ImageIndex &imageIndex) const override;
      bool isRenderable(const Context *context,
                        GLenum binding,
                        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_
  

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