void StimulusDisplay::addContext(int _context_id){
context_ids.push_back(_context_id);
int contextIndex = context_ids.size() - 1;
OpenGLContextLock ctxLock = opengl_context_manager->setCurrent(_context_id);
getCurrentViewportSize(bufferWidths[contextIndex], bufferHeights[contextIndex]);
CVDisplayLinkRef dl;
if (kCVReturnSuccess != CVDisplayLinkCreateWithActiveCGDisplays(&dl)) {
throw SimpleException("Unable to create display link");
}
displayLinks.push_back(dl);
displayLinkContexts.emplace_back(new DisplayLinkContext(this, contextIndex));
if (kCVReturnSuccess != CVDisplayLinkSetOutputCallback(dl,
&StimulusDisplay::displayLinkCallback,
displayLinkContexts.back().get()))
{
throw SimpleException("Unable to set display link output callback");
}
if (kCVReturnSuccess != opengl_context_manager->prepareDisplayLinkForContext(dl, _context_id)) {
throw SimpleException("Unable to associate display link with OpenGL context");
}
if (0 == contextIndex) {
setMainDisplayRefreshRate();
allocateBufferStorage();
}
}
BEGIN_NAMESPACE_MW
/**********************************************************************
* StimulusDisplay Methods
**********************************************************************/
StimulusDisplay::StimulusDisplay(bool drawEveryFrame, bool announceIndividualStimuli) :
current_context_index(-1),
mainDisplayRefreshRate(0.0),
currentOutputTimeUS(-1),
announceIndividualStimuli(announceIndividualStimuli),
announceStimuliOnImplicitUpdates(true),
drawEveryFrame(drawEveryFrame)
{
// defer creation of the display chain until after the stimulus display has been created
display_stack = shared_ptr< LinkedList<StimulusNode> >(new LinkedList<StimulusNode>());
setDisplayBounds();
setBackgroundColor(0.5, 0.5, 0.5);
opengl_context_manager = OpenGLContextManager::instance();
clock = Clock::instance();
waitingForRefresh = false;
needDraw = false;
if (kCVReturnSuccess != CVDisplayLinkCreateWithActiveCGDisplays(&displayLink) ||
kCVReturnSuccess != CVDisplayLinkSetOutputCallback(displayLink,
&StimulusDisplay::displayLinkCallback,
this))
{
throw SimpleException("Unable to create display link");
}
stateSystemNotification = shared_ptr<VariableCallbackNotification>(new VariableCallbackNotification(boost::bind(&StimulusDisplay::stateSystemCallback, this, _1, _2)));
state_system_mode->addNotification(stateSystemNotification);
}
