2 Threaded OpenGL Problem

rewb0rn · Post by **rewb0rn** » Fri Nov 10, 2006 2:02 pm

Hi Folks,
im having a program using a various number of threads (between 1 and 2 atm^^). It works well for 1 or 2 threads using directx or the software renderers but if i switch to opengl it just renders everything black (no endless loop or something, just whole screen is black), this only appears if i use opengl and 2 threads.
Cause I cant find the mistake im asking if there is any known issue with opengl and multithreading (already searched forums but didnt find anything). Thx in advance!

JP · Post by JP » Fri Nov 10, 2006 2:14 pm

What are your threads being used for? Irrlicht isn't thread safe so this could be a problem to do with that i guess...

rewb0rn · Post by **rewb0rn** » Fri Nov 10, 2006 2:30 pm

Im using 1 for rendering and 1 for updating the scene, but thats only temporarily because i have nothing like ai or anything like that yet

Saturn · Post by **Saturn** » Fri Nov 10, 2006 2:55 pm

Maybe it is the issue with OpenGL that Steve Streeting recently wrote about in his blog: http://www.stevestreeting.com/?p=404

Resources are local to the thread they are created in and if this isn't the thread you render in, then they are not drawn.

rewb0rn · Post by **rewb0rn** » Fri Nov 10, 2006 2:59 pm

Yes they are not drawn in that thread, thx alot, has to be it!