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/*
* Copyright (C) 2011-2017 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 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 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 "config.h"
#include "WebGLContextGroup.h"
#if ENABLE(WEBGL)
#include "GraphicsContextGL.h"
#include "WebGLRenderingContextBase.h"
#include "WebGLSharedObject.h"
namespace WebCore {
Ref<WebGLContextGroup> WebGLContextGroup::create()
{
return adoptRef(*new WebGLContextGroup);
}
WebGLContextGroup::~WebGLContextGroup()
{
detachAndRemoveAllObjects();
}
bool WebGLContextGroup::hasAContext() const
{
return !m_contexts.isEmpty();
}
GraphicsContextGL& WebGLContextGroup::getAGraphicsContextGL()
{
ASSERT(!m_contexts.isEmpty());
return *(*m_contexts.begin())->graphicsContextGL();
}
Lock& WebGLContextGroup::objectGraphLockForAContext()
{
ASSERT(!m_contexts.isEmpty());
// Since the WEBGL_shared_objects extension never shipped, and is
// unlikely to, this is equivalent to WebGLContextObject's
// implementation. If there were the possibility of WebGL objects
// being shared between multiple contexts, this would have to be
// rethought.
return (*m_contexts.begin())->objectGraphLock();
}
void WebGLContextGroup::addContext(WebGLRenderingContextBase& context)
{
m_contexts.add(&context);
}
void WebGLContextGroup::removeContext(WebGLRenderingContextBase& context)
{
// We must call detachAndRemoveAllObjects before removing the last context.
if (m_contexts.size() == 1 && m_contexts.contains(&context))
detachAndRemoveAllObjects();
m_contexts.remove(&context);
}
void WebGLContextGroup::removeObject(WebGLSharedObject& object)
{
m_groupObjects.remove(&object);
}
void WebGLContextGroup::addObject(WebGLSharedObject& object)
{
m_groupObjects.add(&object);
}
void WebGLContextGroup::detachAndRemoveAllObjects()
{
if (m_contexts.isEmpty()) {
// No objectGraphLock is available to cover the calls to
// WebGLObject::deleteObject.
while (!m_groupObjects.isEmpty())
(*m_groupObjects.begin())->detachContextGroupWithoutDeletingObject();
return;
}
Locker locker { objectGraphLockForAContext() };
while (!m_groupObjects.isEmpty())
(*m_groupObjects.begin())->detachContextGroup(locker);
}
void WebGLContextGroup::loseContextGroup(WebGLRenderingContextBase::LostContextMode mode)
{
for (auto& context : m_contexts)
context->loseContextImpl(mode);
detachAndRemoveAllObjects();
}
} // namespace WebCore
#endif // ENABLE(WEBGL)
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