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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 #include "config.h"
     27 
     28 #include "core/html/canvas/WebGLRenderbuffer.h"
     29 
     30 #include "core/html/canvas/WebGLRenderingContext.h"
     31 
     32 namespace WebCore {
     33 
     34 PassRefPtr<WebGLRenderbuffer> WebGLRenderbuffer::create(WebGLRenderingContext* ctx)
     35 {
     36     return adoptRef(new WebGLRenderbuffer(ctx));
     37 }
     38 
     39 WebGLRenderbuffer::~WebGLRenderbuffer()
     40 {
     41     deleteObject(0);
     42 }
     43 
     44 WebGLRenderbuffer::WebGLRenderbuffer(WebGLRenderingContext* ctx)
     45     : WebGLSharedObject(ctx)
     46     , m_internalFormat(GraphicsContext3D::RGBA4)
     47     , m_initialized(false)
     48     , m_width(0)
     49     , m_height(0)
     50     , m_hasEverBeenBound(false)
     51 {
     52     ScriptWrappable::init(this);
     53     setObject(ctx->graphicsContext3D()->createRenderbuffer());
     54 }
     55 
     56 void WebGLRenderbuffer::deleteObjectImpl(GraphicsContext3D* context3d, Platform3DObject object)
     57 {
     58     context3d->deleteRenderbuffer(object);
     59     deleteEmulatedStencilBuffer(context3d);
     60 }
     61 
     62 void WebGLRenderbuffer::deleteEmulatedStencilBuffer(GraphicsContext3D* context3d)
     63 {
     64     if (!m_emulatedStencilBuffer)
     65         return;
     66     m_emulatedStencilBuffer->deleteObject(context3d);
     67     m_emulatedStencilBuffer.clear();
     68 }
     69 
     70 }
     71