1 files changed, 53 insertions, 0 deletions
diff --git a/gfx/layers/OOPCanvasRenderer.h b/gfx/layers/OOPCanvasRenderer.h
new file mode 100644
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+++ b/gfx/layers/OOPCanvasRenderer.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_LAYERS_OOPCANVASRENDERER_H_
+#define MOZILLA_LAYERS_OOPCANVASRENDERER_H_
+
+#include "nsISupportsImpl.h"
+
+class nsICanvasRenderingContextInternal;
+
+namespace mozilla {
+
+namespace dom {
+class HTMLCanvasElement;
+}
+
+namespace layers {
+class CanvasClient;
+
+/**
+ * This renderer works with WebGL running in the host process.  It does
+ * not perform any graphics operations itself -- it is the client-side
+ * representation.  It forwards WebGL composition to the remote process.
+ */
+class OOPCanvasRenderer final {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(OOPCanvasRenderer)
+
+ public:
+  explicit OOPCanvasRenderer(nsICanvasRenderingContextInternal* aContext)
+      : mContext(aContext) {}
+
+  dom::HTMLCanvasElement* mHTMLCanvasElement = nullptr;
+
+  // The ClientWebGLContext that this is for
+  nsICanvasRenderingContextInternal* mContext = nullptr;
+
+  // The lifetime of this pointer is controlled by OffscreenCanvas
+  // Can be accessed in active thread and ImageBridge thread.
+  // But we never accessed it at the same time on both thread. So no
+  // need to protect this member.
+  CanvasClient* mCanvasClient = nullptr;
+
+ private:
+  ~OOPCanvasRenderer() = default;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // MOZILLA_LAYERS_OOPCANVASRENDERER_H_