1 /*
2 * Copyright (C) 2010, 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 * 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. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25 #include "config.h"
26
27 #if USE(ACCELERATED_COMPOSITING)
28
29 #include "LayerTexture.h"
30
31 #include "GraphicsContext3D.h"
32 #include "TextureManager.h"
33
34 namespace WebCore {
35
LayerTexture(GraphicsContext3D * context,TextureManager * manager)36 LayerTexture::LayerTexture(GraphicsContext3D* context, TextureManager* manager)
37 : m_context(context)
38 , m_textureManager(manager)
39 , m_token(0)
40 , m_format(0)
41 , m_textureId(0)
42 {
43 }
44
~LayerTexture()45 LayerTexture::~LayerTexture()
46 {
47 if (m_token)
48 m_textureManager->releaseToken(m_token);
49 }
50
isValid(const IntSize & size,unsigned format)51 bool LayerTexture::isValid(const IntSize& size, unsigned format)
52 {
53 return m_token && size == m_size && format == m_format && m_textureManager->hasTexture(m_token);
54 }
55
reserve(const IntSize & size,unsigned format)56 bool LayerTexture::reserve(const IntSize& size, unsigned format)
57 {
58 if (!m_token)
59 m_token = m_textureManager->getToken();
60
61 if (size == m_size && format == m_format && m_textureManager->hasTexture(m_token))
62 m_textureManager->protectTexture(m_token);
63 else {
64 m_textureId = m_textureManager->requestTexture(m_token, size, format);
65 if (m_textureId) {
66 m_size = size;
67 m_format = format;
68 }
69 }
70
71 return m_textureId;
72 }
73
bindTexture()74 void LayerTexture::bindTexture()
75 {
76 ASSERT(m_textureManager->hasTexture(m_token));
77 m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId);
78 }
79
framebufferTexture2D()80 void LayerTexture::framebufferTexture2D()
81 {
82 m_context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::TEXTURE_2D, m_textureId, 0);
83 }
84
85 }
86
87 #endif // USE(ACCELERATED_COMPOSITING)
88
89