/* * Copyright (C) 2010 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef TextureLayerChromium_h #define TextureLayerChromium_h #if USE(ACCELERATED_COMPOSITING) #include "LayerChromium.h" namespace WebCore { class TextureLayerChromiumClient { public: // Called to prepare this layer's texture for compositing. The client may queue a texture // upload or copy on the CCTextureUpdater. // Returns the texture ID to be used for compositing. virtual unsigned prepareTexture(CCTextureUpdater&) = 0; // Returns the context that is providing the texture. Used for rate limiting and detecting lost context. virtual GraphicsContext3D* context() = 0; protected: virtual ~TextureLayerChromiumClient() { } }; // A Layer containing a the rendered output of a plugin instance. class TextureLayerChromium : public LayerChromium { public: // If this texture layer requires special preparation logic for each frame driven by // the compositor, pass in a non-nil client. Pass in a nil client pointer if texture updates // are driven by an external process. static PassRefPtr<TextureLayerChromium> create(TextureLayerChromiumClient*); virtual ~TextureLayerChromium(); void clearClient() { m_client = 0; } virtual PassOwnPtr<CCLayerImpl> createCCLayerImpl() OVERRIDE; // Sets whether this texture should be Y-flipped at draw time. Defaults to true. void setFlipped(bool); // Sets a UV transform to be used at draw time. Defaults to (0, 0, 1, 1). void setUVRect(const FloatRect&); // Sets whether the alpha channel is premultiplied or unpremultiplied. Defaults to true. void setPremultipliedAlpha(bool); // Sets whether this context should rate limit on damage to prevent too many frames from // being queued up before the compositor gets a chance to run. Requires a non-nil client. // Defaults to false. void setRateLimitContext(bool); // Code path for plugins which supply their own texture ID. void setTextureId(unsigned); virtual void setNeedsDisplayRect(const FloatRect&) OVERRIDE; virtual bool drawsContent() const OVERRIDE; virtual void update(CCTextureUpdater&, const CCOcclusionTracker*) OVERRIDE; virtual void pushPropertiesTo(CCLayerImpl*) OVERRIDE; protected: explicit TextureLayerChromium(TextureLayerChromiumClient*); private: TextureLayerChromiumClient* m_client; bool m_flipped; FloatRect m_uvRect; bool m_premultipliedAlpha; bool m_rateLimitContext; bool m_contextLost; unsigned m_textureId; }; } #endif // USE(ACCELERATED_COMPOSITING) #endif