Implement WEBGL_shared_resources

Source/core/html/canvas/WebGLSharedResources.h

 /*
- * Copyright (C) 2011 Google Inc. All rights reserved.
+ * Copyright (C) 2013 Google 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
+ * THIS SOFTWARE IS PROVIDED BY GOOGLE, 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
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE, 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. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef OESVertexArrayObject_h
-#define OESVertexArrayObject_h
+#ifndef WebGLSharedResources_h
+#define WebGLSharedResources_h
 
-#include "bindings/v8/ScriptWrappable.h"
 #include "core/html/canvas/WebGLExtension.h"
-#include "core/html/canvas/WebGLVertexArrayObjectOES.h"
-#include "core/platform/graphics/GraphicsTypes3D.h"
+#include "core/html/canvas/WebGLSharedObject.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/UnusedParam.h"
 
 namespace WebCore {
 
-class WebGLRenderingContext;
-class WebGLVertexArrayObjectOES;
+class WebGLShader;
+class WebGLShareGroup;
 
 typedef int ExceptionCode;
 
-class OESVertexArrayObject : public WebGLExtension, public ScriptWrappable {
+class WebGLSharedResources : public WebGLExtension {
 public:
-    static PassRefPtr<OESVertexArrayObject> create(WebGLRenderingContext*);
+    static PassRefPtr<WebGLSharedResources> create(WebGLRenderingContext*);
     static bool supported(WebGLRenderingContext*);
     static const char* getExtensionName();
 
-    virtual ~OESVertexArrayObject();
+    static bool intToAcquireMode(unsigned, WebGLSharedObject::AcquireMode*);
+
+    virtual ~WebGLSharedResources();
     virtual ExtensionName getName() const;
+    virtual void lose(bool);
 
-    PassRefPtr<WebGLVertexArrayObjectOES> createVertexArrayOES();
-    void deleteVertexArrayOES(WebGLVertexArrayObjectOES*);
-    GC3Dboolean isVertexArrayOES(WebGLVertexArrayObjectOES*);
-    void bindVertexArrayOES(WebGLVertexArrayObjectOES*, ExceptionCode&);
+    PassRefPtr<WebGLShareGroup> group() const;
+
+    long acquireSharedResource(WebGLSharedObject*, unsigned, PassRefPtr<WebGLAcquireSharedResourceCallback>, ExceptionCode&);
+    void releaseSharedResource(WebGLSharedObject*, ExceptionCode&);
+    void cancelAcquireSharedResource(long);
 
 private:
-    OESVertexArrayObject(WebGLRenderingContext*);
+    WebGLSharedResources(WebGLRenderingContext*);
+
+    RefPtr<WebGLShareGroup> m_shareGroup;
 };
 
 } // namespace WebCore
 
-#endif // OESVertexArrayObject_h
+#endif // WebGLSharedResources_h