tor-browser

The Tor Browser
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RenderCompositorEGL.h (2470B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H
      8 #define MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H
      9 
     10 #include "GLTypes.h"
     11 #include "mozilla/webrender/RenderCompositor.h"
     12 
     13 namespace mozilla {
     14 
     15 namespace wr {
     16 
     17 class RenderCompositorEGL : public RenderCompositor {
     18 public:
     19  static UniquePtr<RenderCompositor> Create(
     20      const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError);
     21 
     22  explicit RenderCompositorEGL(const RefPtr<widget::CompositorWidget>& aWidget,
     23                               RefPtr<gl::GLContext>&& aGL);
     24  virtual ~RenderCompositorEGL();
     25 
     26  bool BeginFrame() override;
     27  RenderedFrameId EndFrame(const nsTArray<DeviceIntRect>& aDirtyRects) final;
     28  void Pause() override;
     29  bool Resume() override;
     30  bool IsPaused() override;
     31 
     32  gl::GLContext* gl() const override { return mGL; }
     33 
     34  bool MakeCurrent() override;
     35 
     36  bool UseANGLE() const override { return false; }
     37 
     38  LayoutDeviceIntSize GetBufferSize() override;
     39 
     40  // Interface for partial present
     41  bool UsePartialPresent() override;
     42  bool RequestFullRender() override;
     43  uint32_t GetMaxPartialPresentRects() override;
     44  bool ShouldDrawPreviousPartialPresentRegions() override;
     45  size_t GetBufferAge() const override;
     46  void SetBufferDamageRegion(const wr::DeviceIntRect* aRects,
     47                             size_t aNumRects) override;
     48 
     49  RefPtr<layers::Fence> GetAndResetReleaseFence() override;
     50 
     51 protected:
     52  EGLSurface CreateEGLSurface();
     53 
     54  void DestroyEGLSurface();
     55 
     56  RefPtr<gl::GLContext> mGL;
     57 
     58  EGLSurface mEGLSurface;
     59 
     60  // Whether we are in the process of handling a NEW_SURFACE error. On Android
     61  // this is used to allow the widget an opportunity to recover from the first
     62  // instance, before raising a WebRenderError on subsequent occurences.
     63  bool mHandlingNewSurfaceError = false;
     64 
     65  // FileDescriptor of release fence.
     66  // Release fence is a fence that is used for waiting until usage/composite of
     67  // AHardwareBuffer is ended. The fence is delivered to client side via
     68  // ImageBridge. It is used only on android.
     69  RefPtr<layers::Fence> mReleaseFence;
     70 };
     71 
     72 }  // namespace wr
     73 }  // namespace mozilla
     74 
     75 #endif  // MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H