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      1 /*
      2  * Copyright (C) 2009 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 COMPUTER, 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 WebGLRenderbuffer_h
     27 #define WebGLRenderbuffer_h
     28 
     29 #include "bindings/v8/ScriptWrappable.h"
     30 #include "core/html/canvas/WebGLSharedObject.h"
     31 #include "wtf/PassRefPtr.h"
     32 
     33 namespace WebCore {
     34 
     35 class WebGLRenderbuffer FINAL : public WebGLSharedObject, public ScriptWrappable {
     36 public:
     37     virtual ~WebGLRenderbuffer();
     38 
     39     static PassRefPtr<WebGLRenderbuffer> create(WebGLRenderingContextBase*);
     40 
     41     void setInternalFormat(GLenum internalformat)
     42     {
     43         m_internalFormat = internalformat;
     44     }
     45     GLenum internalFormat() const { return m_internalFormat; }
     46 
     47     void setSize(GLsizei width, GLsizei height)
     48     {
     49         m_width = width;
     50         m_height = height;
     51     }
     52     GLsizei width() const { return m_width; }
     53     GLsizei height() const { return m_height; }
     54 
     55     bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; }
     56 
     57     void setHasEverBeenBound() { m_hasEverBeenBound = true; }
     58 
     59     void setEmulatedStencilBuffer(PassRefPtr<WebGLRenderbuffer> buffer) { m_emulatedStencilBuffer = buffer; }
     60     WebGLRenderbuffer* emulatedStencilBuffer() const { return m_emulatedStencilBuffer.get(); }
     61     void deleteEmulatedStencilBuffer(blink::WebGraphicsContext3D* context3d);
     62 
     63 protected:
     64     WebGLRenderbuffer(WebGLRenderingContextBase*);
     65 
     66     virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE;
     67 
     68 private:
     69     virtual bool isRenderbuffer() const OVERRIDE { return true; }
     70 
     71     GLenum m_internalFormat;
     72     GLsizei m_width, m_height;
     73 
     74     bool m_hasEverBeenBound;
     75 
     76     RefPtr<WebGLRenderbuffer> m_emulatedStencilBuffer;
     77 };
     78 
     79 } // namespace WebCore
     80 
     81 #endif // WebGLRenderbuffer_h
     82