Draw image from thread

We generally load a image in ofApp::setup() function. do changes on image in ofApp::update() function and and display (draw) image in ofApp::draw() function.

I want to write a application using openframeworks. I want to create two threads. one should be read the image and another should display (draw) image. The draw thread is not displaying. Could anyone suggest me why it is happening?

Hey, are you drawing the image the gl thread?
Are you using thread mutexes or locks ?
Your description sounds correct, please provide some code.