OOPCanvasRenderer.h (1600B)
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_LAYERS_OOPCANVASRENDERER_H_ 8 #define MOZILLA_LAYERS_OOPCANVASRENDERER_H_ 9 10 #include "nsISupportsImpl.h" 11 12 class nsICanvasRenderingContextInternal; 13 14 namespace mozilla { 15 16 namespace dom { 17 class HTMLCanvasElement; 18 } 19 20 namespace layers { 21 class CanvasClient; 22 23 /** 24 * This renderer works with WebGL running in the host process. It does 25 * not perform any graphics operations itself -- it is the client-side 26 * representation. It forwards WebGL composition to the remote process. 27 */ 28 class OOPCanvasRenderer final { 29 NS_INLINE_DECL_THREADSAFE_REFCOUNTING(OOPCanvasRenderer) 30 31 public: 32 explicit OOPCanvasRenderer(nsICanvasRenderingContextInternal* aContext) 33 : mContext(aContext) {} 34 35 dom::HTMLCanvasElement* mHTMLCanvasElement = nullptr; 36 37 // The ClientWebGLContext that this is for 38 nsICanvasRenderingContextInternal* mContext = nullptr; 39 40 // The lifetime of this pointer is controlled by OffscreenCanvas 41 // Can be accessed in active thread and ImageBridge thread. 42 // But we never accessed it at the same time on both thread. So no 43 // need to protect this member. 44 CanvasClient* mCanvasClient = nullptr; 45 46 private: 47 ~OOPCanvasRenderer() = default; 48 }; 49 50 } // namespace layers 51 } // namespace mozilla 52 53 #endif // MOZILLA_LAYERS_OOPCANVASRENDERER_H_