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| 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 SKY_ENGINE_CORE_HTML_CANVAS_WEBGLOBJECT_H_ | |
| 27 #define SKY_ENGINE_CORE_HTML_CANVAS_WEBGLOBJECT_H_ | |
| 28 | |
| 29 #include "sky/engine/platform/graphics/GraphicsTypes3D.h" | |
| 30 #include "sky/engine/platform/heap/Handle.h" | |
| 31 #include "sky/engine/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 RefCounted<WebGLObject> { | |
| 43 public: | |
| 44 virtual ~WebGLObject(); | |
| 45 | |
| 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 implemente
d. | |
| 51 void deleteObject(blink::WebGraphicsContext3D*); | |
| 52 | |
| 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. | |
| 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 WebGLRenderingContextB
ase*) const = 0; | |
| 63 | |
| 64 protected: | |
| 65 explicit WebGLObject(WebGLRenderingContextBase*); | |
| 66 | |
| 67 // setObject should be only called once right after creating a WebGLObject. | |
| 68 void setObject(Platform3DObject); | |
| 69 | |
| 70 // deleteObjectImpl should be only called once to delete the OpenGL resource
. | |
| 71 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject
) = 0; | |
| 72 | |
| 73 virtual bool hasGroupOrContext() const = 0; | |
| 74 | |
| 75 void detach(); | |
| 76 void detachAndDeleteObject(); | |
| 77 | |
| 78 virtual blink::WebGraphicsContext3D* getAWebGraphicsContext3D() const = 0; | |
| 79 | |
| 80 private: | |
| 81 Platform3DObject m_object; | |
| 82 unsigned m_attachmentCount; | |
| 83 bool m_deleted; | |
| 84 }; | |
| 85 | |
| 86 } // namespace blink | |
| 87 | |
| 88 #endif // SKY_ENGINE_CORE_HTML_CANVAS_WEBGLOBJECT_H_ | |
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