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 "core/platform/graphics/GraphicsContext3D.h" 30 31 #include "wtf/RefCounted.h" 32 33 namespace WebCore { 34 35 class GraphicsContext3D; 36 class WebGLContextGroup; 37 class WebGLRenderingContext; 38 39 class WebGLObject : public RefCounted<WebGLObject> { 40 public: 41 virtual ~WebGLObject(); 42 43 Platform3DObject object() const { return m_object; } 44 45 // deleteObject may not always delete the OpenGL resource. For programs and 46 // shaders, deletion is delayed until they are no longer attached. 47 // FIXME: revisit this when resource sharing between contexts are implemented. 48 void deleteObject(GraphicsContext3D*); 49 50 void onAttached() { ++m_attachmentCount; } 51 void onDetached(GraphicsContext3D*); 52 53 // This indicates whether the client side issue a delete call already, not 54 // whether the OpenGL resource is deleted. 55 // object()==0 indicates the OpenGL resource is deleted. 56 bool isDeleted() { return m_deleted; } 57 58 // True if this object belongs to the group or context. 59 virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContext*) const = 0; 60 61 protected: 62 WebGLObject(WebGLRenderingContext*); 63 64 // setObject should be only called once right after creating a WebGLObject. 65 void setObject(Platform3DObject); 66 67 // deleteObjectImpl should be only called once to delete the OpenGL resource. 68 virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject) = 0; 69 70 virtual bool hasGroupOrContext() const = 0; 71 72 virtual void detach(); 73 74 virtual GraphicsContext3D* getAGraphicsContext3D() const = 0; 75 76 private: 77 Platform3DObject m_object; 78 unsigned m_attachmentCount; 79 bool m_deleted; 80 }; 81 82 } // namespace WebCore 83 84 #endif // WebGLObject_h 85