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 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 45 LayerTexture::~LayerTexture() 46 { 47 if (m_token) 48 m_textureManager->releaseToken(m_token); 49 } 50 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 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 74 void LayerTexture::bindTexture() 75 { 76 ASSERT(m_textureManager->hasTexture(m_token)); 77 m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId); 78 } 79 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
