Home | History | Annotate | Download | only in canvas 
      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 #if ENABLE(WEBGL)
     29 
     30 #include "WebGLObject.h"
     31 
     32 #include "WebGLRenderingContext.h"
     33 
     34 namespace WebCore {
     35 
     36 WebGLObject::WebGLObject(WebGLRenderingContext* context)
     37     : m_object(0)
     38     , m_context(context)
     39     , m_attachmentCount(0)
     40     , m_deleted(false)
     41 {
     42 }
     43 
     44 WebGLObject::~WebGLObject()
     45 {
     46     if (m_context)
     47         m_context->removeObject(this);
     48 }
     49 
     50 void WebGLObject::setObject(Platform3DObject object)
     51 {
     52     // object==0 && m_deleted==false indicating an uninitialized state;
     53     ASSERT(!m_object && !m_deleted);
     54     m_object = object;
     55 }
     56 
     57 void WebGLObject::deleteObject()
     58 {
     59     m_deleted = true;
     60     if (!m_context || !m_object)
     61         return;
     62     if (!m_attachmentCount) {
     63         m_context->graphicsContext3D()->makeContextCurrent();
     64         deleteObjectImpl(m_object);
     65         m_object = 0;
     66     }
     67 }
     68 
     69 }
     70 
     71 #endif // ENABLE(WEBGL)
     72