hi

i have a programm which creates a pbuffer. i am starting a thread and using this pbuffer to render a scene and saving it a dynamic texture.
the application accesses this texture to draw it. i am using this to achieve asynchronous rendering.

PROBLEM:
using this method with ATI graphiccards work fine.
but using nvidia graphiccards the scene is only rendered once. any further manipulation does not affect the dynamic texture. it seems that the pbuffer can only be written once.
once i remove threading (but keep every as is) it will work fine.

anyone can help ?

Qt 4.6.2
windows (tested: XP, vista, 7)
nvidia (tested one 3 different cards)