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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/core/v8/ScriptWrappable.h"
     30 #include "core/html/canvas/WebGLSharedObject.h"
     31 #include "wtf/PassRefPtr.h"
     32 
     33 namespace blink {
     34 
     35 class WebGLRenderbuffer FINAL : public WebGLSharedObject, public ScriptWrappable {
     36     DEFINE_WRAPPERTYPEINFO();
     37 public:
     38     virtual ~WebGLRenderbuffer();
     39 
     40     static PassRefPtrWillBeRawPtr<WebGLRenderbuffer> create(WebGLRenderingContextBase*);
     41 
     42     void setInternalFormat(GLenum internalformat)
     43     {
     44         m_internalFormat = internalformat;
     45     }
     46     GLenum internalFormat() const { return m_internalFormat; }
     47 
     48     void setSize(GLsizei width, GLsizei height)
     49     {
     50         m_width = width;
     51         m_height = height;
     52     }
     53     GLsizei width() const { return m_width; }
     54     GLsizei height() const { return m_height; }
     55 
     56     bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; }
     57 
     58     void setHasEverBeenBound() { m_hasEverBeenBound = true; }
     59 
     60     void setEmulatedStencilBuffer(PassRefPtrWillBeRawPtr<WebGLRenderbuffer> buffer) { m_emulatedStencilBuffer = buffer; }
     61     WebGLRenderbuffer* emulatedStencilBuffer() const { return m_emulatedStencilBuffer.get(); }
     62     void deleteEmulatedStencilBuffer(blink::WebGraphicsContext3D* context3d);
     63 
     64     virtual void trace(Visitor*) OVERRIDE;
     65 
     66 protected:
     67     explicit WebGLRenderbuffer(WebGLRenderingContextBase*);
     68 
     69     virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE;
     70 
     71 private:
     72     virtual bool isRenderbuffer() const OVERRIDE { return true; }
     73 
     74     GLenum m_internalFormat;
     75     GLsizei m_width, m_height;
     76 
     77     bool m_hasEverBeenBound;
     78 
     79     RefPtrWillBeMember<WebGLRenderbuffer> m_emulatedStencilBuffer;
     80 };
     81 
     82 } // namespace blink
     83 
     84 #endif // WebGLRenderbuffer_h
     85