gfx/webrender_bindings/RenderCompositorEGL.h

   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   ipc::FileDescriptor 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   ipc::FileDescriptor mReleaseFenceFd;
  70 };
  71
  72 }  // namespace wr
  73 }  // namespace mozilla
  74
  75 #endif  // MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H