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/*
* Copyright (C) 2009-2017 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 "WebGLObject.h"
#if ENABLE(WEBGL)
#include "WebCoreOpaqueRoot.h"
#include "WebGLCompressedTextureS3TC.h"
#include "WebGLDebugRendererInfo.h"
#include "WebGLDebugShaders.h"
#include "WebGLLoseContext.h"
#include "WebGLRenderingContextBase.h"
namespace WebCore {
WebGLObject::WebGLObject(WebGLRenderingContextBase& context, PlatformGLObject object)
: m_context(context.createRefForContextObject())
, m_object(object)
{
}
WebGLObject::~WebGLObject() = default;
WebGLRenderingContextBase* WebGLObject::context() const
{
return m_context.get();
}
Lock& WebGLObject::objectGraphLockForContext()
{
// Should not call this if the object or context has been deleted.
ASSERT(m_context);
return m_context->objectGraphLock();
}
GraphicsContextGL* WebGLObject::graphicsContextGL() const
{
return m_context ? m_context->graphicsContextGL() : nullptr;
}
void WebGLObject::runDestructor()
{
auto& lock = objectGraphLockForContext();
if (lock.isHeld()) {
// Destruction of WebGLObjects can happen in chains triggered from GC.
// The lock must be held only once, at the beginning of the chain.
auto locker = AbstractLocker(NoLockingNecessary);
deleteObject(locker, nullptr);
} else {
Locker locker { lock };
deleteObject(locker, nullptr);
}
}
void WebGLObject::deleteObject(const AbstractLocker& locker, GraphicsContextGL* context3d)
{
m_deleted = true;
if (!m_object)
return;
if (!m_context)
return;
if (!m_attachmentCount) {
if (!context3d)
context3d = graphicsContextGL();
if (context3d)
deleteObjectImpl(locker, context3d, m_object);
}
if (!m_attachmentCount)
m_object = 0;
}
void WebGLObject::onDetached(const AbstractLocker& locker, GraphicsContextGL* context3d)
{
ASSERT(m_attachmentCount); // FIXME: handle attachment with WebGLAttachmentPoint RAII object and remove the ifs.
if (m_attachmentCount)
--m_attachmentCount;
if (m_deleted)
deleteObject(locker, context3d);
}
bool WebGLObject::validate(const WebGLRenderingContextBase& context) const
{
return &context == m_context;
}
WebCoreOpaqueRoot root(WebGLObject* object)
{
return WebCoreOpaqueRoot { object };
}
} // namespace WebCore
#endif // ENABLE(WEBGL)
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