RenderCompositorEGL.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H

#define MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H

#include "GLTypes.h"

#include "mozilla/webrender/RenderCompositor.h"

namespace mozilla {

namespace wr {

class RenderCompositorEGL : public RenderCompositor {

 public:

  static UniquePtr<RenderCompositor> Create(

      const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError);

  explicit RenderCompositorEGL(const RefPtr<widget::CompositorWidget>& aWidget,

                               RefPtr<gl::GLContext>&& aGL);

  virtual ~RenderCompositorEGL();

  bool BeginFrame() override;

  RenderedFrameId EndFrame(const nsTArray<DeviceIntRect>& aDirtyRects) final;

  void Pause() override;

  bool Resume() override;

  bool IsPaused() override;

  gl::GLContext* gl() const override { return mGL; }

  bool MakeCurrent() override;

  bool UseANGLE() const override { return false; }

  LayoutDeviceIntSize GetBufferSize() override;

  // Interface for partial present

  bool UsePartialPresent() override;

  bool RequestFullRender() override;

  uint32_t GetMaxPartialPresentRects() override;

  bool ShouldDrawPreviousPartialPresentRegions() override;

  size_t GetBufferAge() const override;

  void SetBufferDamageRegion(const wr::DeviceIntRect* aRects,

                             size_t aNumRects) override;

  ipc::FileDescriptor GetAndResetReleaseFence() override;

 protected:

  EGLSurface CreateEGLSurface();

  void DestroyEGLSurface();

  RefPtr<gl::GLContext> mGL;

  EGLSurface mEGLSurface;

  // Whether we are in the process of handling a NEW_SURFACE error. On Android

  // this is used to allow the widget an opportunity to recover from the first

  // instance, before raising a WebRenderError on subsequent occurences.

  bool mHandlingNewSurfaceError = false;

  // FileDescriptor of release fence.

  // Release fence is a fence that is used for waiting until usage/composite of

  // AHardwareBuffer is ended. The fence is delivered to client side via

  // ImageBridge. It is used only on android.

  ipc::FileDescriptor mReleaseFenceFd;

};

}  // namespace wr

}  // namespace mozilla

#endif  // MOZILLA_GFX_RENDERCOMPOSITOR_EGL_H