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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 : public WebGLSharedObject, public ScriptWrappable {
     36 public:
     37     virtual ~WebGLRenderbuffer();
     38 
     39     static PassRefPtr<WebGLRenderbuffer> create(WebGLRenderingContext*);
     40 
     41     void setInternalFormat(GC3Denum internalformat)
     42     {
     43         m_internalFormat = internalformat;
     44         m_initialized = false;
     45     }
     46     GC3Denum getInternalFormat() const { return m_internalFormat; }
     47 
     48     void setSize(GC3Dsizei width, GC3Dsizei height)
     49     {
     50         m_width = width;
     51         m_height = height;
     52     }
     53     GC3Dsizei getWidth() const { return m_width; }
     54     GC3Dsizei getHeight() const { return m_height; }
     55 
     56     bool isInitialized() const { return m_initialized; }
     57     void setInitialized() { m_initialized = true; }
     58 
     59     bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; }
     60 
     61     void setHasEverBeenBound() { m_hasEverBeenBound = true; }
     62 
     63     void setEmulatedStencilBuffer(PassRefPtr<WebGLRenderbuffer> buffer) { m_emulatedStencilBuffer = buffer; }
     64     WebGLRenderbuffer* emulatedStencilBuffer() const { return m_emulatedStencilBuffer.get(); }
     65     void deleteEmulatedStencilBuffer(GraphicsContext3D* context3d);
     66 
     67 protected:
     68     WebGLRenderbuffer(WebGLRenderingContext*);
     69 
     70     virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject);
     71 
     72 private:
     73     virtual bool isRenderbuffer() const { return true; }
     74 
     75     GC3Denum m_internalFormat;
     76     bool m_initialized;
     77     GC3Dsizei m_width, m_height;
     78 
     79     bool m_hasEverBeenBound;
     80 
     81     RefPtr<WebGLRenderbuffer> m_emulatedStencilBuffer;
     82 };
     83 
     84 } // namespace WebCore
     85 
     86 #endif // WebGLRenderbuffer_h
     87