103 lines
3.8 KiB
C++
103 lines
3.8 KiB
C++
/*
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* Copyright (C) 2009-2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(WEBGL)
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#include "GraphicsTypesGL.h"
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#include <wtf/Forward.h>
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#include <wtf/RefCounted.h>
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namespace WebCore {
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class GraphicsContextGL;
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class WebGLContextGroup;
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class WebGLRenderingContextBase;
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class WebGLObject : public RefCounted<WebGLObject> {
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public:
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virtual ~WebGLObject() = default;
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PlatformGLObject object() const { return m_object; }
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// deleteObject may not always delete the OpenGL resource. For programs and
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// shaders, deletion is delayed until they are no longer attached.
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// FIXME: revisit this when resource sharing between contexts are implemented.
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// The AbstractLocker argument enforces at compile time that the objectGraphLock
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// is held. This isn't necessary for all object types, but enough of them that
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// it's done for all of them.
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void deleteObject(const WTF::AbstractLocker&, GraphicsContextGL*);
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void onAttached() { ++m_attachmentCount; }
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void onDetached(const WTF::AbstractLocker&, GraphicsContextGL*);
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// This indicates whether the client side issue a delete call already, not
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// whether the OpenGL resource is deleted.
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// object()==0 indicates the OpenGL resource is deleted.
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bool isDeleted() { return m_deleted; }
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// True if this object belongs to the group or context.
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virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContextBase&) const = 0;
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// Returns the object graph lock associated with the context most
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// closely associated with this object. Since the
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// WEBGL_shared_objects extension specification never shipped (and
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// is unlikely to), this basically returns the same result for
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// both context objects and shared objects.
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virtual Lock& objectGraphLockForContext() = 0;
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protected:
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WebGLObject() = default;
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// setObject should be only called once right after creating a WebGLObject.
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void setObject(PlatformGLObject);
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void runDestructor();
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// deleteObjectImpl should be only called once to delete the OpenGL resource.
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virtual void deleteObjectImpl(const WTF::AbstractLocker&, GraphicsContextGL*, PlatformGLObject) = 0;
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virtual bool hasGroupOrContext() const = 0;
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virtual void detach();
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virtual GraphicsContextGL* getAGraphicsContextGL() const = 0;
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private:
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PlatformGLObject m_object { 0 };
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unsigned m_attachmentCount { 0 };
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bool m_deleted { false };
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};
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inline PlatformGLObject objectOrZero(WebGLObject* object)
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{
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return object ? object->object() : 0;
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}
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} // namespace WebCore
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#endif
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