void oc_reset_cc_gl_state(){
//reset to cocos2d-x render state
static GLuint s_cc_gl_program = 0;
static CCDirector* s_cc_director = NULL;
if( 0 == s_cc_gl_program ){
CCShaderCache* cache = CCShaderCache::sharedShaderCache();
CCGLProgram* glp = cache->programForKey(kCCShader_PositionTextureColor);
s_cc_gl_program = glp->getProgram();
}
if( NULL == s_cc_director ){
s_cc_director = CCDirector::sharedDirector();
}
glUseProgram(s_cc_gl_program);
s_cc_director->setAlphaBlending(true);
s_cc_director->setDepthTest(false);
s_cc_director->setProjection(kCCDirectorProjection3D);
// glDisable( GL_CULL_FACE );
}
bool YUVSprite::initWidthYUV420P(int w,int h,uint8_t *yuv[3],int linesize[3])
{
/* 初始化shader program */
//double t0 = cc_clock();
CCShaderCache * ccsc = CCShaderCache::sharedShaderCache();
while(1){
if(ccsc){
_prog = ccsc->programForKey(_yuv420pShaderName);
if(!_prog){
_prog = new CCGLProgram();
if(_prog && _prog->initWithVertexShaderByteArray(_vshader,_fshader) ){
//add attribute
_prog->addAttribute("position", ATTRIB_VERTEX);
_prog->addAttribute("TexCoordIn", ATTRIB_TEXTURE);
if(_prog->link()){
_prog->updateUniforms();
ccsc->addProgram(_prog, _yuv420pShaderName);
_prog->release();
CHECK_GL_ERROR_DEBUG();
break;
}else{
CCLOG("yuv420p shader program link failed");
}
}else{
CCLOG("yuv420p shader program compile failed");
}
}else break;
}
CCLOG("YUVSprite::initWidthYUV420P yuv420p shader program init failed");
return false;
}
//double t1 = cc_clock();
/* 加载texture */
if(CCSprite::init()){
if(yuv){
_width = w;
_height = h;
setContentSize(CCSize(w,h));
CCRect rect = CCRectZero;
rect.size = CCSize(w,h);
setTextureRect(rect,false,rect.size);
textureUniformY = glGetUniformLocation(_prog->getProgram(), "tex_y");
textureUniformU = glGetUniformLocation(_prog->getProgram(), "tex_u");
textureUniformV = glGetUniformLocation(_prog->getProgram(), "tex_v");
borderUniformY = glGetUniformLocation(_prog->getProgram(), "yborder");
borderUniformU = glGetUniformLocation(_prog->getProgram(), "uborder");
borderUniformV = glGetUniformLocation(_prog->getProgram(), "vborder");
_border[0] = (float)w/(float)linesize[0];
_border[1] = (float)w/(2.0f*linesize[1]);
_border[2] = (float)w/(2.0f*linesize[2]);
// double t2 = cc_clock();
glGenTextures(1, &id_y);
glBindTexture(GL_TEXTURE_2D, id_y);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, linesize[0], h, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, yuv[0]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
// double t3 = cc_clock();
glGenTextures(1, &id_u);
glBindTexture(GL_TEXTURE_2D, id_u);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE,linesize[1], h/2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, yuv[1]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
// double t4 = cc_clock();
glGenTextures(1, &id_v);
glBindTexture(GL_TEXTURE_2D, id_v);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, linesize[2], h/2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, yuv[2]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
// double t5 = cc_clock();
// CCLOG("prog %f, unif %f , y= %f , u=%f , v=%f",t1-t0,t2-t1,t3-t2,t4-t3,t5-t4);
CHECK_GL_ERROR_DEBUG();
textureDone = 1;
}
return true;
}
return false;
}
