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/*
* Copyright (C) 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "modules/webgl/WebGLObject.h"
#include "modules/webgl/WebGLRenderingContextBase.h"
namespace blink {
WebGLObject::WebGLObject(WebGLRenderingContextBase* context)
: m_cachedNumberOfContextLosses(context->numberOfContextLosses()),
m_attachmentCount(0),
m_deleted(false),
m_destructionInProgress(false) {}
WebGLObject::~WebGLObject() {}
uint32_t WebGLObject::cachedNumberOfContextLosses() const {
return m_cachedNumberOfContextLosses;
}
void WebGLObject::deleteObject(gpu::gles2::GLES2Interface* gl) {
m_deleted = true;
if (!hasObject())
return;
if (!hasGroupOrContext())
return;
if (currentNumberOfContextLosses() != m_cachedNumberOfContextLosses) {
// This object has been invalidated.
return;
}
if (!m_attachmentCount) {
if (!gl)
gl = getAGLInterface();
if (gl) {
deleteObjectImpl(gl);
// Ensure the inherited class no longer claims to have a valid object
ASSERT(!hasObject());
}
}
}
void WebGLObject::detach() {
m_attachmentCount = 0; // Make sure OpenGL resource is deleted.
}
void WebGLObject::detachAndDeleteObject() {
// To ensure that all platform objects are deleted after being detached,
// this method does them together.
detach();
deleteObject(nullptr);
}
void WebGLObject::runDestructor() {
DCHECK(!m_destructionInProgress);
// This boilerplate destructor is sufficient for all subclasses, as long
// as they implement deleteObjectImpl properly, and don't try to touch
// other objects on the Oilpan heap if the destructor's been entered.
m_destructionInProgress = true;
detachAndDeleteObject();
}
bool WebGLObject::destructionInProgress() const {
return m_destructionInProgress;
}
void WebGLObject::onDetached(gpu::gles2::GLES2Interface* gl) {
if (m_attachmentCount)
--m_attachmentCount;
if (m_deleted)
deleteObject(gl);
}
DEFINE_TRACE_WRAPPERS(WebGLObject) {}
} // namespace blink
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