1/*
2 * Copyright (C) 2009-2017 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 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 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#pragma once
27
28#include "GraphicsContext3D.h"
29
30namespace WebCore {
31
32class WebGLContextGroup;
33class WebGLRenderingContextBase;
34
35class WebGLObject : public RefCounted<WebGLObject> {
36public:
37 virtual ~WebGLObject() = default;
38
39 Platform3DObject object() const { return m_object; }
40
41 // deleteObject may not always delete the OpenGL resource. For programs and
42 // shaders, deletion is delayed until they are no longer attached.
43 // FIXME: revisit this when resource sharing between contexts are implemented.
44 void deleteObject(GraphicsContext3D*);
45
46 void onAttached() { ++m_attachmentCount; }
47 void onDetached(GraphicsContext3D*);
48
49 // This indicates whether the client side issue a delete call already, not
50 // whether the OpenGL resource is deleted.
51 // object()==0 indicates the OpenGL resource is deleted.
52 bool isDeleted() { return m_deleted; }
53
54 // True if this object belongs to the group or context.
55 virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContextBase&) const = 0;
56
57protected:
58 WebGLObject() = default;
59
60 // setObject should be only called once right after creating a WebGLObject.
61 void setObject(Platform3DObject);
62
63 // deleteObjectImpl should be only called once to delete the OpenGL resource.
64 virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject) = 0;
65
66 virtual bool hasGroupOrContext() const = 0;
67
68 virtual void detach();
69
70 virtual GraphicsContext3D* getAGraphicsContext3D() const = 0;
71
72private:
73 Platform3DObject m_object { 0 };
74 unsigned m_attachmentCount { 0 };
75 bool m_deleted { false };
76};
77
78} // namespace WebCore
79