I am trying to add a simple feature to my application which will draw a black circular frame around an image.
I have tried to use the stencil buffer to implement this, and it works on one of my PC’s and not on the other.
The one it works on has a Core 2 - 6600 CPU with Quadro FX1400 graphics card.
On an almost identical system (same graphic card but with Q6600 CPU) the function glDrawPixels which writes the stencil map takes forever to return (few minutes).
Has anyone experienced such an issue? Any hints on how to debug or overcome this?
Thanks in advance,