mirror of https://github.com/axmolengine/axmol.git
133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2011 cocos2d-x.org
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Copyright (c) 2009 On-Core
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "CCGrabber.h"
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#include "ccMacros.h"
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#include "CCTexture2D.h"
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#include "platform/platform.h"
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namespace cocos2d
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{
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CCGrabber::CCGrabber(void)
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: m_fbo(0)
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, m_oldFBO(0)
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{
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memset(m_oldClearColor, 0, sizeof(m_oldClearColor));
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m_eGlesVersion = CCConfiguration::sharedConfiguration()->getGlesVersion();
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// If the gles version is lower than GLES_VER_2_0,
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// all the functions in CCGrabber return directly.
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if (m_eGlesVersion < GLES_VER_2_0)
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{
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return ;
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}
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// generate FBO
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glGenFramebuffers(1, &m_fbo);
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}
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void CCGrabber::grab(CCTexture2D *pTexture)
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{
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// If the gles version is lower than GLES_VER_2_0,
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// all the functions in CCGrabber return directly.
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if (m_eGlesVersion < GLES_VER_2_0)
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{
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return ;
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}
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &m_oldFBO);
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// bind
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glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
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// associate texture with FBO
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, pTexture->getName(), 0);
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// check if it worked (probably worth doing :) )
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GLuint status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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if (status != GL_FRAMEBUFFER_COMPLETE)
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{
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CCLOG("Frame Grabber: could not attach texture to frmaebuffer");
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}
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glBindFramebuffer(GL_FRAMEBUFFER, m_oldFBO);
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}
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void CCGrabber::beforeRender(CCTexture2D *pTexture)
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{
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CC_UNUSED_PARAM(pTexture);
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// If the gles version is lower than GLES_VER_2_0,
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// all the functions in CCGrabber return directly.
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if (m_eGlesVersion < GLES_VER_2_0)
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{
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return ;
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}
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &m_oldFBO);
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glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
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// save clear color
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glGetFloatv(GL_COLOR_CLEAR_VALUE, m_oldClearColor);
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// BUG XXX: doesn't work with RGB565.
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/*glClearColor(0, 0, 0, 0);*/
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// BUG #631: To fix #631, uncomment the lines with #631
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// Warning: But it CCGrabber won't work with 2 effects at the same time
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glClearColor(0.0f,0.0f,0.0f,1.0f); // #631
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glColorMask(true, true, true, false); // #631
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}
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void CCGrabber::afterRender(cocos2d::CCTexture2D *pTexture)
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{
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CC_UNUSED_PARAM(pTexture);
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// If the gles version is lower than GLES_VER_2_0,
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// all the functions in CCGrabber return directly.
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if (m_eGlesVersion < GLES_VER_2_0)
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{
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return ;
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}
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glBindFramebuffer(GL_FRAMEBUFFER, m_oldFBO);
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glColorMask(true, true, true, true); // #631
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// Restore clear color
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glClearColor( m_oldClearColor[0], m_oldClearColor[1], m_oldClearColor[2], m_oldClearColor[3] );
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}
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CCGrabber::~CCGrabber()
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{
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// If the gles version is lower than GLES_VER_2_0,
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// all the functions in CCGrabber return directly.
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if (m_eGlesVersion < GLES_VER_2_0)
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{
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return ;
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}
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CCLOGINFO("cocos2d: deallocing %p", this);
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glDeleteFramebuffers(1, &m_fbo);
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}
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} // end of namespace cocos2d
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