mirror of https://github.com/axmolengine/axmol.git
513 lines
16 KiB
C++
513 lines
16 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2009 Jason Booth
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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 "CCConfiguration.h"
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#include "misc_nodes/CCRenderTexture.h"
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#include "CCDirector.h"
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#include "platform/platform.h"
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#include "platform/CCImage.h"
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#include "shaders/CCGLProgram.h"
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#include "shaders/ccGLStateCache.h"
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#include "CCConfiguration.h"
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#include "support/ccUtils.h"
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#include "textures/CCTextureCache.h"
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#include "platform/CCFileUtils.h"
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#include "CCGL.h"
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#include "support/CCNotificationCenter.h"
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#include "CCEventType.h"
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// extern
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#include "kazmath/GL/matrix.h"
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NS_CC_BEGIN
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// implementation CCRenderTexture
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CCRenderTexture::CCRenderTexture()
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: m_pSprite(NULL)
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, m_uFBO(0)
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, m_uDepthRenderBufffer(0)
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, m_nOldFBO(0)
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, m_pTexture(0)
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, m_pTextureCopy(0)
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, m_pUITextureImage(NULL)
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, m_ePixelFormat(kCCTexture2DPixelFormat_RGBA8888)
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{
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// Listen this event to save render texture before come to background.
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// Then it can be restored after coming to foreground on Android.
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CCNotificationCenter::sharedNotificationCenter()->addObserver(this,
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callfuncO_selector(CCRenderTexture::listenToBackground),
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EVENT_COME_TO_BACKGROUND,
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NULL);
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}
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CCRenderTexture::~CCRenderTexture()
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{
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CC_SAFE_RELEASE(m_pTextureCopy);
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glDeleteFramebuffers(1, &m_uFBO);
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if (m_uDepthRenderBufffer)
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{
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glDeleteRenderbuffers(1, &m_uDepthRenderBufffer);
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}
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CC_SAFE_DELETE(m_pUITextureImage);
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CCNotificationCenter::sharedNotificationCenter()->removeObserver(this, EVENT_COME_TO_BACKGROUND);
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}
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void CCRenderTexture::listenToBackground(cocos2d::CCObject *obj)
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{
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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CC_SAFE_DELETE(m_pUITextureImage);
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// to get the rendered texture data
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m_pUITextureImage = newCCImage();
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if (m_pUITextureImage)
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{
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const CCSize& s = m_pTexture->getContentSizeInPixels();
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VolatileTexture::addDataTexture(m_pTexture, m_pUITextureImage->getData(), kTexture2DPixelFormat_RGBA8888, s);
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}
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else
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{
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CCLOG("Cache rendertexture failed!");
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}
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#endif
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}
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CCSprite * CCRenderTexture::getSprite()
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{
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return m_pSprite;
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}
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void CCRenderTexture::setSprite(CCSprite* var)
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{
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m_pSprite = var;
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}
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CCRenderTexture * CCRenderTexture::renderTextureWithWidthAndHeight(int w, int h, CCTexture2DPixelFormat eFormat)
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{
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return CCRenderTexture::create(w, h, eFormat);
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}
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CCRenderTexture * CCRenderTexture::create(int w, int h, CCTexture2DPixelFormat eFormat)
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{
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CCRenderTexture *pRet = new CCRenderTexture();
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if(pRet && pRet->initWithWidthAndHeight(w, h, eFormat))
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{
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pRet->autorelease();
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return pRet;
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}
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CC_SAFE_DELETE(pRet);
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return NULL;
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}
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CCRenderTexture * CCRenderTexture::renderTextureWithWidthAndHeight(int w ,int h, CCTexture2DPixelFormat eFormat, GLuint uDepthStencilFormat)
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{
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return CCRenderTexture::create(w, h, eFormat, uDepthStencilFormat);
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}
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CCRenderTexture * CCRenderTexture::create(int w ,int h, CCTexture2DPixelFormat eFormat, GLuint uDepthStencilFormat)
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{
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CCRenderTexture *pRet = new CCRenderTexture();
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if(pRet && pRet->initWithWidthAndHeight(w, h, eFormat, uDepthStencilFormat))
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{
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pRet->autorelease();
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return pRet;
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}
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CC_SAFE_DELETE(pRet);
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return NULL;
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}
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CCRenderTexture * CCRenderTexture::renderTextureWithWidthAndHeight(int w, int h)
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{
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return CCRenderTexture::create(w, h);
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}
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CCRenderTexture * CCRenderTexture::create(int w, int h)
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{
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CCRenderTexture *pRet = new CCRenderTexture();
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if(pRet && pRet->initWithWidthAndHeight(w, h, kCCTexture2DPixelFormat_RGBA8888, 0))
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{
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pRet->autorelease();
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return pRet;
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}
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CC_SAFE_DELETE(pRet);
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return NULL;
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}
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bool CCRenderTexture::initWithWidthAndHeight(int w, int h, CCTexture2DPixelFormat eFormat)
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{
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return initWithWidthAndHeight(w, h, eFormat, 0);
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}
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bool CCRenderTexture::initWithWidthAndHeight(int w, int h, CCTexture2DPixelFormat eFormat, GLuint uDepthStencilFormat)
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{
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CCAssert(m_ePixelFormat != kCCTexture2DPixelFormat_A8, "only RGB and RGBA formats are valid for a render texture");
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bool bRet = false;
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void *data = NULL;
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do
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{
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w *= (int)CC_CONTENT_SCALE_FACTOR();
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h *= (int)CC_CONTENT_SCALE_FACTOR();
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &m_nOldFBO);
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// textures must be power of two squared
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unsigned int powW = 0;
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unsigned int powH = 0;
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if (CCConfiguration::sharedConfiguration()->supportsNPOT())
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{
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powW = w;
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powH = h;
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}
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else
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{
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powW = ccNextPOT(w);
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powH = ccNextPOT(h);
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}
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data = malloc((int)(powW * powH * 4));
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CC_BREAK_IF(! data);
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memset(data, 0, (int)(powW * powH * 4));
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m_ePixelFormat = eFormat;
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m_pTexture = new CCTexture2D();
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if (m_pTexture)
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{
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m_pTexture->initWithData(data, (CCTexture2DPixelFormat)m_ePixelFormat, powW, powH, CCSizeMake((float)w, (float)h));
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}
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else
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{
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break;
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}
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GLint oldRBO;
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glGetIntegerv(GL_RENDERBUFFER_BINDING, &oldRBO);
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if (CCConfiguration::sharedConfiguration()->checkForGLExtension("GL_QCOM"))
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{
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m_pTextureCopy = new CCTexture2D();
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if (m_pTextureCopy)
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{
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m_pTextureCopy->initWithData(data, (CCTexture2DPixelFormat)m_ePixelFormat, powW, powH, CCSizeMake((float)w, (float)h));
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}
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else
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{
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break;
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}
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}
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// generate FBO
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glGenFramebuffers(1, &m_uFBO);
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glBindFramebuffer(GL_FRAMEBUFFER, m_uFBO);
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// associate texture with FBO
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_pTexture->getName(), 0);
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if (m_uDepthRenderBufffer != 0)
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{
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//create and attach depth buffer
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glGenRenderbuffers(1, &m_uDepthRenderBufffer);
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glBindRenderbuffer(GL_RENDERBUFFER, m_uDepthRenderBufffer);
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glRenderbufferStorage(GL_RENDERBUFFER, uDepthStencilFormat, (GLsizei)powW, (GLsizei)powH);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_uDepthRenderBufffer);
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// if depth format is the one with stencil part, bind same render buffer as stencil attachment
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if (uDepthStencilFormat == CC_GL_DEPTH24_STENCIL8)
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{
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_uDepthRenderBufffer);
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}
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}
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// check if it worked (probably worth doing :) )
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CCAssert(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE, "Could not attach texture to framebuffer");
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m_pTexture->setAliasTexParameters();
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m_pSprite = CCSprite::createWithTexture(m_pTexture);
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m_pTexture->release();
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m_pSprite->setScaleY(-1);
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this->addChild(m_pSprite);
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ccBlendFunc tBlendFunc = {GL_ONE, GL_ONE_MINUS_SRC_ALPHA };
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m_pSprite->setBlendFunc(tBlendFunc);
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glBindRenderbuffer(GL_RENDERBUFFER, oldRBO);
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glBindFramebuffer(GL_FRAMEBUFFER, m_nOldFBO);
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bRet = true;
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} while (0);
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CC_SAFE_FREE(data);
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return bRet;
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}
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void CCRenderTexture::begin()
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{
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// Save the current matrix
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kmGLPushMatrix();
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const CCSize& texSize = m_pTexture->getContentSizeInPixels();
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// Calculate the adjustment ratios based on the old and new projections
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CCDirector *director = CCDirector::sharedDirector();
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CCSize size = director->getWinSizeInPixels();
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float widthRatio = size.width / texSize.width;
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float heightRatio = size.height / texSize.height;
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// Adjust the orthographic projection and viewport
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glViewport(0, 0, (GLsizei)texSize.width, (GLsizei)texSize.height);
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kmMat4 orthoMatrix;
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kmMat4OrthographicProjection(&orthoMatrix, (float)-1.0 / widthRatio, (float)1.0 / widthRatio,
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(float)-1.0 / heightRatio, (float)1.0 / heightRatio, -1,1 );
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kmGLMultMatrix(&orthoMatrix);
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &m_nOldFBO);
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glBindFramebuffer(GL_FRAMEBUFFER, m_uFBO);
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/* Certain Qualcomm Andreno gpu's will retain data in memory after a frame buffer switch which corrupts the render to the texture. The solution is to clear the frame buffer before rendering to the texture. However, calling glClear has the unintended result of clearing the current texture. Create a temporary texture to overcome this. At the end of CCRenderTexture::begin(), switch the attached texture to the second one, call glClear, and then switch back to the original texture. This solution is unnecessary for other devices as they don't have the same issue with switching frame buffers.
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*/
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if (CCConfiguration::sharedConfiguration()->checkForGLExtension("GL_QCOM"))
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{
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// -- bind a temporary texture so we can clear the render buffer without losing our texture
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_pTextureCopy->getName(), 0);
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CHECK_GL_ERROR_DEBUG();
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_pTexture->getName(), 0);
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}
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}
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void CCRenderTexture::beginWithClear(float r, float g, float b, float a)
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{
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this->begin();
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// save clear color
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GLfloat clearColor[4];
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glGetFloatv(GL_COLOR_CLEAR_VALUE,clearColor);
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glClearColor(r, g, b, a);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// restore clear color
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glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
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}
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void CCRenderTexture::beginWithClear(float r, float g, float b, float a, float depthValue)
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{
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this->begin();
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// save clear color
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GLfloat clearColor[4];
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GLfloat depthClearValue;
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glGetFloatv(GL_COLOR_CLEAR_VALUE,clearColor);
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &depthClearValue);
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glClearColor(r, g, b, a);
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glClearDepth(depthValue);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// restore clear color
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glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
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glClearDepth(depthClearValue);
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}
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void CCRenderTexture::beginWithClear(float r, float g, float b, float a, float depthValue, int stencilValue)
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{
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this->begin();
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// save clear color
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GLfloat clearColor[4];
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GLfloat depthClearValue;
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int stencilClearValue;
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glGetFloatv(GL_COLOR_CLEAR_VALUE,clearColor);
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &depthClearValue);
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glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &stencilClearValue);
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glClearColor(r, g, b, a);
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glClearDepth(depthValue);
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glClearStencil(stencilValue);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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// restore clear color
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glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
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glClearDepth(depthClearValue);
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glClearStencil(stencilClearValue);
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}
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void CCRenderTexture::end()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, m_nOldFBO);
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kmGLPopMatrix();
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CCDirector *director = CCDirector::sharedDirector();
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CCSize size = director->getWinSizeInPixels();
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// restore viewport
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glViewport(0, 0, GLsizei(size.width * CC_CONTENT_SCALE_FACTOR()), GLsizei(size.height * CC_CONTENT_SCALE_FACTOR()));
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// special viewport for 3d projection + retina display
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if ( director->getProjection() == kCCDirectorProjection3D && CC_CONTENT_SCALE_FACTOR() != 1 )
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{
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glViewport((GLsizei)(-size.width/2), (GLsizei)(-size.height/2), (GLsizei)(size.width * CC_CONTENT_SCALE_FACTOR()), (GLsizei)(size.height * CC_CONTENT_SCALE_FACTOR()));
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}
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director->setProjection(director->getProjection());
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}
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void CCRenderTexture::clear(float r, float g, float b, float a)
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{
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this->beginWithClear(r, g, b, a);
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this->end();
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}
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void CCRenderTexture::clearDepth(float depthValue)
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{
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this->begin();
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//! save old depth value
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GLfloat depthClearValue;
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &depthClearValue);
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glClearDepth(depthValue);
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glClear(GL_DEPTH_BUFFER_BIT);
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// restore clear color
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glClearDepth(depthClearValue);
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this->end();
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}
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void CCRenderTexture::clearStencil(int stencilValue)
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{
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// save old stencil value
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int stencilClearValue;
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glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &stencilClearValue);
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glClearStencil(stencilValue);
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glClear(GL_STENCIL_BUFFER_BIT);
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// restore clear color
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glClearStencil(stencilClearValue);
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}
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bool CCRenderTexture::saveToFile(const char *szFilePath)
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{
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bool bRet = false;
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CCImage *pImage = newCCImage();
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if (pImage)
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{
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bRet = pImage->saveToFile(szFilePath, kCCImageFormatJPEG);
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}
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CC_SAFE_DELETE(pImage);
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return bRet;
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}
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bool CCRenderTexture::saveToFile(const char *fileName, tCCImageFormat format)
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{
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bool bRet = false;
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CCAssert(format == kCCImageFormatJPEG || format == kCCImageFormatPNG,
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"the image can only be saved as JPG or PNG format");
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CCImage *pImage = newCCImage();
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if (pImage)
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{
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std::string fullpath = CCFileUtils::sharedFileUtils()->getWriteablePath() + fileName;
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bRet = pImage->saveToFile(fullpath.c_str(), true);
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}
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CC_SAFE_DELETE(pImage);
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return bRet;
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}
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/* get buffer as CCImage */
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CCImage* CCRenderTexture::newCCImage()
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{
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CCAssert(m_ePixelFormat == kCCTexture2DPixelFormat_RGBA8888, "only RGBA8888 can be saved as image");
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if (NULL == m_pTexture)
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{
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return NULL;
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}
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const CCSize& s = m_pTexture->getContentSizeInPixels();
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// to get the image size to save
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// if the saving image domain exceeds the buffer texture domain,
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// it should be cut
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int nSavedBufferWidth = (int)s.width;
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int nSavedBufferHeight = (int)s.height;
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GLubyte *pBuffer = NULL;
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GLubyte *pTempData = NULL;
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CCImage *pImage = new CCImage();
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do
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{
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CC_BREAK_IF(! (pBuffer = new GLubyte[nSavedBufferWidth * nSavedBufferHeight * 4]));
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if(! (pTempData = new GLubyte[nSavedBufferWidth * nSavedBufferHeight * 4]))
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{
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delete[] pBuffer;
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pBuffer = NULL;
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break;
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}
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this->begin();
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glPixelStorei(GL_PACK_ALIGNMENT, 1);
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glReadPixels(0,0,nSavedBufferWidth, nSavedBufferHeight,GL_RGBA,GL_UNSIGNED_BYTE, pTempData);
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this->end();
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// to get the actual texture data
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// #640 the image read from rendertexture is dirty
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for (int i = 0; i < nSavedBufferHeight; ++i)
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{
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memcpy(&pBuffer[i * nSavedBufferWidth * 4],
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&pTempData[(nSavedBufferHeight - i - 1) * nSavedBufferWidth * 4],
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nSavedBufferWidth * 4);
|
|
}
|
|
|
|
pImage->initWithImageData(pBuffer, nSavedBufferWidth * nSavedBufferHeight * 4, CCImage::kFmtRawData, nSavedBufferWidth, nSavedBufferHeight, 8);
|
|
} while (0);
|
|
|
|
CC_SAFE_DELETE_ARRAY(pBuffer);
|
|
CC_SAFE_DELETE_ARRAY(pTempData);
|
|
|
|
return pImage;
|
|
}
|
|
|
|
NS_CC_END
|