1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef WebGLObject_h 27 #define WebGLObject_h 28 29 #include "platform/graphics/GraphicsTypes3D.h" 30 #include "platform/heap/Handle.h" 31 #include "wtf/RefCounted.h" 32 33 namespace blink { 34 class WebGraphicsContext3D; 35 } 36 37 namespace blink { 38 39 class WebGLContextGroup; 40 class WebGLRenderingContextBase; 41 42 class WebGLObject : public RefCountedWillBeGarbageCollectedFinalized<WebGLObject> { 43 public: 44 virtual ~WebGLObject(); 45 object()46 Platform3DObject object() const { return m_object; } 47 48 // deleteObject may not always delete the OpenGL resource. For programs and 49 // shaders, deletion is delayed until they are no longer attached. 50 // FIXME: revisit this when resource sharing between contexts are implemented. 51 void deleteObject(blink::WebGraphicsContext3D*); 52 onAttached()53 void onAttached() { ++m_attachmentCount; } 54 void onDetached(blink::WebGraphicsContext3D*); 55 56 // This indicates whether the client side issue a delete call already, not 57 // whether the OpenGL resource is deleted. 58 // object()==0 indicates the OpenGL resource is deleted. isDeleted()59 bool isDeleted() { return m_deleted; } 60 61 // True if this object belongs to the group or context. 62 virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContextBase*) const = 0; 63 trace(Visitor *)64 virtual void trace(Visitor*) { } 65 66 protected: 67 explicit WebGLObject(WebGLRenderingContextBase*); 68 69 // setObject should be only called once right after creating a WebGLObject. 70 void setObject(Platform3DObject); 71 72 // deleteObjectImpl should be only called once to delete the OpenGL resource. 73 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) = 0; 74 75 virtual bool hasGroupOrContext() const = 0; 76 77 void detach(); 78 void detachAndDeleteObject(); 79 80 virtual blink::WebGraphicsContext3D* getAWebGraphicsContext3D() const = 0; 81 82 private: 83 Platform3DObject m_object; 84 unsigned m_attachmentCount; 85 bool m_deleted; 86 }; 87 88 } // namespace blink 89 90 #endif // WebGLObject_h 91