1/*
2 * Copyright (C) 2011 Google 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ProgramBinding_h
27#define ProgramBinding_h
28
29#if USE(ACCELERATED_COMPOSITING)
30
31#include "PlatformString.h"
32
33namespace WebCore {
34
35class GraphicsContext3D;
36
37class ProgramBindingBase {
38public:
39    explicit ProgramBindingBase(GraphicsContext3D*);
40    ~ProgramBindingBase();
41
42    bool init(const String& vertexShader, const String& fragmentShader);
43
44    unsigned program() const { return m_program; }
45    bool initialized() const { return m_initialized; }
46
47protected:
48
49    unsigned loadShader(unsigned type, const String& shaderSource);
50    unsigned createShaderProgram(const String& vertexShaderSource, const String& fragmentShaderSource);
51
52    GraphicsContext3D* m_context;
53    unsigned m_program;
54    bool m_initialized;
55};
56
57template<class VertexShader, class FragmentShader>
58class ProgramBinding : public ProgramBindingBase {
59public:
60    explicit ProgramBinding(GraphicsContext3D* context)
61        : ProgramBindingBase(context)
62    {
63        if (!ProgramBindingBase::init(m_vertexShader.getShaderString(), m_fragmentShader.getShaderString()))
64            return;
65        if (!m_vertexShader.init(m_context, m_program))
66            return;
67        if (!m_fragmentShader.init(m_context, m_program))
68            return;
69        m_initialized = true;
70    }
71
72    const VertexShader& vertexShader() const { return m_vertexShader; }
73    const FragmentShader& fragmentShader() const { return m_fragmentShader; }
74
75private:
76
77    VertexShader m_vertexShader;
78    FragmentShader m_fragmentShader;
79};
80
81} // namespace WebCore
82
83#endif // USE(ACCELERATED_COMPOSITING)
84
85#endif
86