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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 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/WebGLContextObject.h"
     29 
     30 #include "core/html/canvas/WebGLRenderingContextBase.h"
     31 #include "core/html/canvas/WebGLSharedWebGraphicsContext3D.h"
     32 
     33 namespace blink {
     34 
     35 WebGLContextObject::WebGLContextObject(WebGLRenderingContextBase* context)
     36     : WebGLObject(context)
     37     , m_context(context)
     38 #if ENABLE(OILPAN)
     39     , m_sharedWebGraphicsContext3D(context->sharedWebGraphicsContext3D())
     40 #endif
     41 {
     42 }
     43 
     44 WebGLContextObject::~WebGLContextObject()
     45 {
     46 #if !ENABLE(OILPAN)
     47     if (m_context)
     48         m_context->removeContextObject(this);
     49 #endif
     50 }
     51 
     52 void WebGLContextObject::detachContext()
     53 {
     54     detach();
     55     if (m_context) {
     56         deleteObject(m_context->webContext());
     57         m_context->removeContextObject(this);
     58         m_context = nullptr;
     59 #if ENABLE(OILPAN)
     60         m_sharedWebGraphicsContext3D.clear();
     61 #endif
     62     }
     63 }
     64 
     65 blink::WebGraphicsContext3D* WebGLContextObject::getAWebGraphicsContext3D() const
     66 {
     67 #if ENABLE(OILPAN)
     68     return m_sharedWebGraphicsContext3D ? m_sharedWebGraphicsContext3D->webContext() : 0;
     69 #else
     70     return m_context ? m_context->webContext() : 0;
     71 #endif
     72 }
     73 
     74 void WebGLContextObject::trace(Visitor* visitor)
     75 {
     76     visitor->trace(m_context);
     77     WebGLObject::trace(visitor);
     78 }
     79 
     80 }
     81