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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_SWGL_H
+#define MOZILLA_GFX_RENDERCOMPOSITOR_SWGL_H
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/webrender/RenderCompositor.h"
+
+namespace mozilla {
+
+namespace wr {
+
+class RenderCompositorSWGL : public RenderCompositor {
+ public:
+ static UniquePtr<RenderCompositor> Create(
+ const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError);
+
+ RenderCompositorSWGL(const RefPtr<widget::CompositorWidget>& aWidget,
+ void* aContext);
+ virtual ~RenderCompositorSWGL();
+
+ void* swgl() const override { return mContext; }
+
+ bool MakeCurrent() override;
+
+ bool BeginFrame() override;
+ void CancelFrame() override;
+ RenderedFrameId EndFrame(const nsTArray<DeviceIntRect>& aDirtyRects) final;
+
+ void StartCompositing(wr::ColorF aClearColor,
+ const wr::DeviceIntRect* aDirtyRects,
+ size_t aNumDirtyRects,
+ const wr::DeviceIntRect* aOpaqueRects,
+ size_t aNumOpaqueRects) override;
+
+ bool UsePartialPresent() override { return true; }
+ bool RequestFullRender() override;
+
+ void Pause() override;
+ bool Resume() override;
+
+ layers::WebRenderBackend BackendType() const override {
+ return layers::WebRenderBackend::SOFTWARE;
+ }
+ layers::WebRenderCompositor CompositorType() const override {
+ return layers::WebRenderCompositor::SOFTWARE;
+ }
+
+ bool SurfaceOriginIsTopLeft() override { return true; }
+
+ LayoutDeviceIntSize GetBufferSize() override;
+
+ bool SupportsExternalBufferTextures() const override { return true; }
+
+ // Interface for wr::Compositor
+ void GetCompositorCapabilities(CompositorCapabilities* aCaps) override;
+
+ private:
+ void* mContext = nullptr;
+ RefPtr<gfx::DrawTarget> mDT;
+ LayoutDeviceIntRegion mDirtyRegion;
+ // Keep consistent buffer size between BeginFrame and EndFrame/CancelFrame
+ // calls to make sure we don't change buffer size during rendering.
+ Maybe<LayoutDeviceIntSize> mRenderWidgetSize;
+ RefPtr<gfx::DataSourceSurface> mSurface;
+ uint8_t* mMappedData = nullptr;
+ int32_t mMappedStride = 0;
+#ifdef MOZ_WAYLAND
+ // On Wayland we need to request full render if widget size is changed
+ // because SW rendering backend reallocates and clears target surface.
+ LayoutDeviceIntSize mLastRenderWidgetSize;
+ bool mRequestFullRender = false;
+#endif
+
+ void ClearMappedBuffer();
+
+ bool AllocateMappedBuffer(const wr::DeviceIntRect* aOpaqueRects,
+ size_t aNumOpaqueRects);
+
+ void CommitMappedBuffer(bool aDirty = true);
+};
+
+} // namespace wr
+} // namespace mozilla
+
+#endif