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/*
* Copyright (C) 2015 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"
#if ENABLE(WEBGL)
#include "WebGLSync.h"
#include "HTMLCanvasElement.h"
#include "WebGLRenderingContextBase.h"
#include <wtf/Lock.h>
#include <wtf/Locker.h>
namespace WebCore {
RefPtr<WebGLSync> WebGLSync::create(WebGLRenderingContextBase& context)
{
auto object = context.protectedGraphicsContextGL()->fenceSync(GraphicsContextGL::SYNC_GPU_COMMANDS_COMPLETE, 0);
if (!object)
return nullptr;
return adoptRef(*new WebGLSync { context, object });
}
WebGLSync::~WebGLSync()
{
if (!m_context)
return;
runDestructor();
}
WebGLSync::WebGLSync(WebGLRenderingContextBase& context, GCGLsync object)
: WebGLObject(context, static_cast<PlatformGLObject>(-1)) // This value is unused because the sync object is a pointer type, but it needs to be non-zero or other parts of the code will assume the object is invalid.
, m_sync(object)
{
}
void WebGLSync::deleteObjectImpl(const AbstractLocker&, GraphicsContextGL* context3d, PlatformGLObject)
{
context3d->deleteSync(m_sync);
m_sync = nullptr;
}
void WebGLSync::updateCache(WebGLRenderingContextBase& context)
{
if (m_syncStatus == GraphicsContextGL::SIGNALED || !m_allowCacheUpdate)
return;
m_allowCacheUpdate = false;
m_syncStatus = context.protectedGraphicsContextGL()->getSynci(m_sync, GraphicsContextGL::SYNC_STATUS);
if (m_syncStatus == GraphicsContextGL::UNSIGNALED)
scheduleAllowCacheUpdate(context);
}
GCGLint WebGLSync::getCachedResult(GCGLenum pname) const
{
switch (pname) {
case GraphicsContextGL::OBJECT_TYPE:
return GraphicsContextGL::SYNC_FENCE;
case GraphicsContextGL::SYNC_STATUS:
return m_syncStatus;
case GraphicsContextGL::SYNC_CONDITION:
return GraphicsContextGL::SYNC_GPU_COMMANDS_COMPLETE;
case GraphicsContextGL::SYNC_FLAGS:
return 0;
}
ASSERT_NOT_REACHED();
return 0;
}
bool WebGLSync::isSignaled() const
{
return m_syncStatus == GraphicsContextGL::SIGNALED;
}
void WebGLSync::scheduleAllowCacheUpdate(WebGLRenderingContextBase& context)
{
context.canvasBase().queueTaskKeepingObjectAlive(TaskSource::WebGL, [protectedThis = Ref { *this }]() {
protectedThis->m_allowCacheUpdate = true;
});
}
}
#endif // ENABLE(WEBGL)
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