/*
* 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 "platform/graphics/GraphicsTypes3D.h"
#include "wtf/RefCounted.h"
namespace blink {
class WebGraphicsContext3D;
}
namespace WebCore {
class WebGLContextGroup;
class WebGLRenderingContextBase;
class WebGLObject : public RefCounted<WebGLObject> {
public:
virtual ~WebGLObject();
Platform3DObject object() const { return m_object; }
// 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(blink::WebGraphicsContext3D*);
void onAttached() { ++m_attachmentCount; }
void onDetached(blink::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;
protected:
WebGLObject(WebGLRenderingContextBase*);
// setObject should be only called once right after creating a WebGLObject.
void setObject(Platform3DObject);
// deleteObjectImpl should be only called once to delete the OpenGL resource.
virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) = 0;
virtual bool hasGroupOrContext() const = 0;
virtual void detach();
virtual blink::WebGraphicsContext3D* getAWebGraphicsContext3D() const = 0;
private:
Platform3DObject m_object;
unsigned m_attachmentCount;
bool m_deleted;
};
} // namespace WebCore
#endif // WebGLObject_h