1/*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2009 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28
29#if ENABLE(WEBGL)
30
31#include "WebGLUniformLocation.h"
32
33namespace WebCore {
34
35PassRefPtr<WebGLUniformLocation> WebGLUniformLocation::create(WebGLProgram* program, GC3Dint location, GC3Denum type)
36{
37    return adoptRef(new WebGLUniformLocation(program, location, type));
38}
39
40WebGLUniformLocation::WebGLUniformLocation(WebGLProgram* program, GC3Dint location, GC3Denum type)
41    : m_program(program)
42    , m_location(location)
43    , m_type(type)
44{
45    ASSERT(m_program);
46    m_linkCount = m_program->getLinkCount();
47}
48
49WebGLProgram* WebGLUniformLocation::program() const
50{
51    // If the program has been linked again, then this UniformLocation is no
52    // longer valid.
53    if (m_program->getLinkCount() != m_linkCount)
54        return 0;
55    return m_program.get();
56}
57
58GC3Dint WebGLUniformLocation::location() const
59{
60    // If the program has been linked again, then this UniformLocation is no
61    // longer valid.
62    ASSERT(m_program->getLinkCount() == m_linkCount);
63    return m_location;
64}
65
66GC3Denum WebGLUniformLocation::type() const
67{
68    // If the program has been linked again, then this UniformLocation is no
69    // longer valid.
70    ASSERT(m_program->getLinkCount() == m_linkCount);
71    return m_type;
72}
73
74}
75
76#endif // ENABLE(WEBGL)
77