1 files changed, 64 insertions, 0 deletions
diff --git a/gfx/layers/ShareableCanvasRenderer.h b/gfx/layers/ShareableCanvasRenderer.h
new file mode 100644
index 0000000000..0e72f9bace
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+++ b/gfx/layers/ShareableCanvasRenderer.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 GFX_SHAREABLECANVASRENDERER_H
+#define GFX_SHAREABLECANVASRENDERER_H
+
+#include "CompositorTypes.h"
+#include "CanvasRenderer.h"
+#include "mozilla/layers/CanvasClient.h"
+
+namespace mozilla {
+namespace gl {
+class SurfaceFactory;
+}  // namespace gl
+
+namespace gfx {
+class DrawTarget;
+}  // namespace gfx
+
+namespace layers {
+
+class ShareableCanvasRenderer : public CanvasRenderer {
+  friend class CanvasClient2D;
+  friend class CanvasClientSharedSurface;
+
+ protected:
+  RefPtr<CanvasClient> mCanvasClient;
+
+ private:
+  layers::SurfaceDescriptor mFrontBufferDesc;
+  RefPtr<TextureClient> mFrontBufferFromDesc;
+
+ public:
+  ShareableCanvasRenderer();
+  virtual ~ShareableCanvasRenderer();
+
+ public:
+  void Initialize(const CanvasRendererData&) override;
+
+  virtual CompositableForwarder* GetForwarder() = 0;
+
+  virtual bool CreateCompositable() = 0;
+  virtual void EnsurePipeline() = 0;
+  virtual bool HasPipeline() { return false; };
+
+  void ClearCachedResources() override;
+  void DisconnectClient() override;
+
+  void UpdateCompositableClient();
+
+  CanvasClient* GetCanvasClient() { return mCanvasClient; }
+
+ private:
+  RefPtr<TextureClient> GetFrontBufferFromDesc(const layers::SurfaceDescriptor&,
+                                               TextureFlags);
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif