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

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• Author : Jamie Madill
  Date : 2017-06-20 12:57:39
  Hash : 4928b7ca
  Message : Proliferate gl::Context everywhere. This gives the D3D back-end access to the GL state almost anywhere. This uses the onDestroy hook for Textures to push errors up from destructors, although they still don't quite make it to the Context. There are places, such as in EGL object (Context/Surface) destruction, where we end up calling through to GL implementation internals without having access to a gl::Context. We handle this via a proxy Context to a Display, basically a null context, that has access to impl-side state like the Renderer pointer if necessary. It does not have access to the normal GL state. Also Pass gl::Context to RefCountObject::release(). Since we're using destroy() methods now, we should not ever call the destructor directly. BUG=angleproject:1156 Change-Id: Ie4c32ad6bf6caaff0289901f30b5c6bafa2ce259 Reviewed-on: https://chromium-review.googlesource.com/529707 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

• src/libANGLE/Surface.h

• //
  // Copyright (c) 2002-2014 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.
  //
  
  // Surface.h: Defines the egl::Surface class, representing a drawing surface
  // such as the client area of a window, including any back buffers.
  // Implements EGLSurface and related functionality. [EGL 1.4] section 2.2 page 3.
  
  #ifndef LIBANGLE_SURFACE_H_
  #define LIBANGLE_SURFACE_H_
  
  #include <EGL/egl.h>
  
  #include "common/angleutils.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/FramebufferAttachment.h"
  #include "libANGLE/RefCountObject.h"
  #include "libANGLE/formatutils.h"
  #include "libANGLE/renderer/SurfaceImpl.h"
  
  namespace gl
  {
  class Framebuffer;
  class Texture;
  }
  
  namespace rx
  {
  class EGLImplFactory;
  }
  
  namespace egl
  {
  class AttributeMap;
  class Display;
  struct Config;
  
  struct SurfaceState final : private angle::NonCopyable
  {
      SurfaceState(const egl::Config *configIn);
  
      gl::Framebuffer *defaultFramebuffer;
      const egl::Config *config;
  };
  
  class Surface : public gl::FramebufferAttachmentObject
  {
    public:
      rx::SurfaceImpl *getImplementation() const { return mImplementation; }
  
      EGLint getType() const;
  
      Error initialize(const Display *display);
      Error swap(const gl::Context *context);
      Error swapWithDamage(const gl::Context *context, EGLint *rects, EGLint n_rects);
      Error postSubBuffer(const gl::Context *context,
                          EGLint x,
                          EGLint y,
                          EGLint width,
                          EGLint height);
      Error querySurfacePointerANGLE(EGLint attribute, void **value);
      Error bindTexImage(const gl::Context *context, gl::Texture *texture, EGLint buffer);
      Error releaseTexImage(const gl::Context *context, EGLint buffer);
  
      Error getSyncValues(EGLuint64KHR *ust, EGLuint64KHR *msc, EGLuint64KHR *sbc);
  
      EGLint isPostSubBufferSupported() const;
  
      void setSwapInterval(EGLint interval);
      Error setIsCurrent(const gl::Context *context, bool isCurrent);
      Error onDestroy(const Display *display);
  
      const Config *getConfig() const;
  
      // width and height can change with client window resizing
      EGLint getWidth() const;
      EGLint getHeight() const;
      EGLint getPixelAspectRatio() const;
      EGLenum getRenderBuffer() const;
      EGLenum getSwapBehavior() const;
      EGLenum getTextureFormat() const;
      EGLenum getTextureTarget() const;
  
      gl::Texture *getBoundTexture() const { return mTexture.get(); }
      gl::Framebuffer *getDefaultFramebuffer() { return mState.defaultFramebuffer; }
  
      EGLint isFixedSize() const;
  
      // FramebufferAttachmentObject implementation
      gl::Extents getAttachmentSize(const gl::ImageIndex &imageIndex) const override;
      const gl::Format &getAttachmentFormat(GLenum binding,
                                            const gl::ImageIndex &imageIndex) const override;
      GLsizei getAttachmentSamples(const gl::ImageIndex &imageIndex) const override;
  
      void onAttach(const gl::Context *context) override {}
      void onDetach(const gl::Context *context) override {}
      GLuint getId() const override;
  
      bool flexibleSurfaceCompatibilityRequested() const
      {
          return mFlexibleSurfaceCompatibilityRequested;
      }
      EGLint getOrientation() const { return mOrientation; }
  
      bool directComposition() const { return mDirectComposition; }
  
    protected:
      Surface(EGLint surfaceType, const egl::Config *config, const AttributeMap &attributes);
      virtual ~Surface();
      rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const override { return mImplementation; }
  
      gl::Framebuffer *createDefaultFramebuffer(const Display *display);
  
      // ANGLE-only method, used internally
      friend class gl::Texture;
      void releaseTexImageFromTexture(const gl::Context *context);
  
      SurfaceState mState;
      rx::SurfaceImpl *mImplementation;
      int mCurrentCount;
      bool mDestroyed;
  
      EGLint mType;
  
      bool mPostSubBufferRequested;
      bool mFlexibleSurfaceCompatibilityRequested;
  
      bool mFixedSize;
      size_t mFixedWidth;
      size_t mFixedHeight;
  
      bool mDirectComposition;
  
      EGLenum mTextureFormat;
      EGLenum mTextureTarget;
  
      EGLint mPixelAspectRatio;      // Display aspect ratio
      EGLenum mRenderBuffer;         // Render buffer
      EGLenum mSwapBehavior;         // Buffer swap behavior
  
      EGLint mOrientation;
  
      gl::BindingPointer<gl::Texture> mTexture;
  
      gl::Format mBackFormat;
      gl::Format mDSFormat;
  
    private:
      Error destroyImpl(const Display *display);
  };
  
  class WindowSurface final : public Surface
  {
    public:
      WindowSurface(rx::EGLImplFactory *implFactory,
                    const Config *config,
                    EGLNativeWindowType window,
                    const AttributeMap &attribs);
      ~WindowSurface() override;
  };
  
  class PbufferSurface final : public Surface
  {
    public:
      PbufferSurface(rx::EGLImplFactory *implFactory,
                     const Config *config,
                     const AttributeMap &attribs);
      PbufferSurface(rx::EGLImplFactory *implFactory,
                     const Config *config,
                     EGLenum buftype,
                     EGLClientBuffer clientBuffer,
                     const AttributeMap &attribs);
  
    protected:
      ~PbufferSurface() override;
  };
  
  class PixmapSurface final : public Surface
  {
    public:
      PixmapSurface(rx::EGLImplFactory *implFactory,
                    const Config *config,
                    NativePixmapType nativePixmap,
                    const AttributeMap &attribs);
  
    protected:
      ~PixmapSurface() override;
  };
  
  using SurfacePointer = angle::UniqueObjectPointer<Surface, Display>;
  
  }  // namespace egl
  
  #endif   // LIBANGLE_SURFACE_H_