gfx/webrender_bindings/RenderCompositorSWGL.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_SWGL_H
   8 #define MOZILLA_GFX_RENDERCOMPOSITOR_SWGL_H
   9
  10 #include "mozilla/gfx/2D.h"
  11 #include "mozilla/webrender/RenderCompositor.h"
  12
  13 namespace mozilla {
  14
  15 namespace wr {
  16
  17 class RenderCompositorSWGL : public RenderCompositor {
  18  public:
  19   static UniquePtr<RenderCompositor> Create(
  20       RefPtr<widget::CompositorWidget>&& aWidget, nsACString& aError);
  21
  22   RenderCompositorSWGL(RefPtr<widget::CompositorWidget>&& aWidget,
  23                        void* aContext);
  24   virtual ~RenderCompositorSWGL();
  25
  26   void* swgl() const override { return mContext; }
  27
  28   bool MakeCurrent() override;
  29
  30   bool BeginFrame() override;
  31   void CancelFrame() override;
  32   RenderedFrameId EndFrame(const nsTArray<DeviceIntRect>& aDirtyRects) final;
  33
  34   bool UsePartialPresent() override { return true; }
  35
  36   void Pause() override;
  37   bool Resume() override;
  38
  39   layers::WebRenderBackend BackendType() const override {
  40     return layers::WebRenderBackend::SOFTWARE;
  41   }
  42   layers::WebRenderCompositor CompositorType() const override {
  43     return layers::WebRenderCompositor::SOFTWARE;
  44   }
  45
  46   bool SurfaceOriginIsTopLeft() override { return true; }
  47
  48   LayoutDeviceIntSize GetBufferSize() override;
  49
  50   bool SupportsExternalBufferTextures() const override { return true; }
  51
  52   // Interface for wr::Compositor
  53   CompositorCapabilities GetCompositorCapabilities() override;
  54
  55  private:
  56   void* mContext = nullptr;
  57   RefPtr<gfx::DrawTarget> mDT;
  58   LayoutDeviceIntRegion mRegion;
  59   RefPtr<gfx::DataSourceSurface> mSurface;
  60   uint8_t* mMappedData = nullptr;
  61   int32_t mMappedStride = 0;
  62
  63   void ClearMappedBuffer();
  64
  65   void CommitMappedBuffer();
  66 };
  67
  68 }  // namespace wr
  69 }  // namespace mozilla
  70
  71 #endif