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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.
*/
#ifndef WebGLObject_h
#define WebGLObject_h
#include "bindings/core/v8/ScriptWrappable.h"
#include "platform/graphics/GraphicsTypes3D.h"
#include "platform/heap/Handle.h"
#include "wtf/RefCounted.h"
namespace blink {
class WebGraphicsContext3D;
}
namespace blink {
class WebGLContextGroup;
class WebGLRenderingContextBase;
template <typename T>
Platform3DObject objectOrZero(const T* object)
{
return object ? object->object() : 0;
}
class WebGLObject : public GarbageCollectedFinalized<WebGLObject>, public ScriptWrappable {
public:
virtual ~WebGLObject();
// deleteObject may not always delete the OpenGL resource. For programs and
// shaders, deletion is delayed until they are no longer attached.
// FIXME: revisit this when resource sharing between contexts are implemented.
void deleteObject(WebGraphicsContext3D*);
void onAttached() { ++m_attachmentCount; }
void onDetached(WebGraphicsContext3D*);
// This indicates whether the client side issue a delete call already, not
// whether the OpenGL resource is deleted.
// object()==0 indicates the OpenGL resource is deleted.
bool isDeleted() { return m_deleted; }
// True if this object belongs to the group or context.
virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContextBase*) const = 0;
virtual bool hasObject() const = 0;
DEFINE_INLINE_VIRTUAL_TRACE() { }
protected:
explicit WebGLObject(WebGLRenderingContextBase*);
// deleteObjectImpl should be only called once to delete the OpenGL resource.
// After calling deleteObjectImpl, hasObject() should return false.
virtual void deleteObjectImpl(blink::WebGraphicsContext3D*) = 0;
virtual bool hasGroupOrContext() const = 0;
void detach();
void detachAndDeleteObject();
virtual WebGraphicsContext3D* getAWebGraphicsContext3D() const = 0;
private:
unsigned m_attachmentCount;
bool m_deleted;
};
} // namespace blink
#endif // WebGLObject_h
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