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      1 /*
      2  * Copyright (C) 2011 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef LegacyCACFLayerTreeHost_h
     27 #define LegacyCACFLayerTreeHost_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 #include "CACFLayerTreeHost.h"
     32 
     33 namespace WebCore {
     34 
     35 // FIXME: Currently there is a LegacyCACFLayerTreeHost for each WebView and each
     36 // has its own WKCACFContext and Direct3DDevice9, which is inefficient.
     37 // (https://bugs.webkit.org/show_bug.cgi?id=31855)
     38 class LegacyCACFLayerTreeHost : public CACFLayerTreeHost {
     39 public:
     40     static PassRefPtr<LegacyCACFLayerTreeHost> create();
     41     virtual ~LegacyCACFLayerTreeHost();
     42 
     43 private:
     44     LegacyCACFLayerTreeHost();
     45 
     46     void initD3DGeometry();
     47 
     48     // Call this when the device window has changed size or when IDirect3DDevice9::Present returns
     49     // D3DERR_DEVICELOST. Returns true if the device was recovered, false if rendering must be
     50     // aborted and reattempted soon.
     51     enum ResetReason { ChangedWindowSize, LostDevice };
     52     bool resetDevice(ResetReason);
     53 
     54     void renderSoon();
     55     void renderTimerFired(Timer<LegacyCACFLayerTreeHost>*);
     56 
     57     virtual void initializeContext(void* userData, PlatformCALayer*);
     58     virtual void resize();
     59     virtual bool createRenderer();
     60     virtual void destroyRenderer();
     61     virtual CFTimeInterval lastCommitTime() const;
     62     virtual void flushContext();
     63     virtual void contextDidChange();
     64     virtual void paint();
     65     virtual void render(const Vector<CGRect>& dirtyRects = Vector<CGRect>());
     66 
     67     Timer<LegacyCACFLayerTreeHost> m_renderTimer;
     68     COMPtr<IDirect3DDevice9> m_d3dDevice;
     69     WKCACFContext* m_context;
     70     bool m_mightBeAbleToCreateDeviceLater;
     71     bool m_mustResetLostDeviceBeforeRendering;
     72 
     73 #ifndef NDEBUG
     74     bool m_printTree;
     75 #endif
     76 };
     77 
     78 } // namespace WebCore
     79 
     80 #endif // USE(ACCELERATED_COMPOSITING)
     81 
     82 #endif // LegacyCACFLayerTreeHost_h
     83