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/*
* Copyright (C) 2011 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.
*/
#ifndef WebGLContextGroup_h
#define WebGLContextGroup_h
#include "bindings/core/v8/ScriptWrappable.h"
#include "modules/webgl/WebGLRenderingContextBase.h"
#include "wtf/HashSet.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
namespace blink {
class WebGLContextGroup final : public GarbageCollected<WebGLContextGroup>,
public TraceWrapperBase {
WTF_MAKE_NONCOPYABLE(WebGLContextGroup);
public:
WebGLContextGroup();
void addContext(WebGLRenderingContextBase*);
// There's no point in having a removeContext method any more now that
// the context group is GarbageCollected. The only time it would be
// called would be during WebGLRenderingContext destruction, and at that
// time, the context is not allowed to refer back to the context group
// since both are on the Oilpan heap.
gpu::gles2::GLES2Interface* getAGLInterface();
void loseContextGroup(WebGLRenderingContextBase::LostContextMode,
WebGLRenderingContextBase::AutoRecoveryMethod);
// This counter gets incremented every time context loss is
// triggered. Because there's no longer any explicit enumeration of
// the objects in a given context group upon context loss, each
// object needs to keep track of the context loss count when it was
// created, in order to validate itself.
uint32_t numberOfContextLosses() const;
DEFINE_INLINE_TRACE() { visitor->trace(m_contexts); }
DECLARE_VIRTUAL_TRACE_WRAPPERS();
private:
friend class WebGLObject;
uint32_t m_numberOfContextLosses;
HeapHashSet<TraceWrapperMember<WebGLRenderingContextBase>> m_contexts;
};
} // namespace blink
#endif // WebGLContextGroup_h
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