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View Full Version : Depth buffer issue and glReadPixels?



Mars_999
05-29-2012, 06:26 AM
I am not sure what is going on, but if I run in window mode with SFML, and do ray picking I get a Z = 1 value returned from glReadPixels all the time. If I run fullscreen I get .7 or some value that works and my picking returns correct results... Have no clue what could be causing this any ideas?

Thanks

Mars_999
05-29-2012, 02:05 PM
No one here has seen this issue before?

I tried the same code now with FreeGLUT in a window mode and works fine, but not SFML. Anything with RC in the window creation cause this to happen vs. fullscreen setup?

Thanks!!!

ZbuffeR
05-29-2012, 04:15 PM
Do you explicitly ask for a depth buffer, at context creation time ?

Mars_999
05-29-2012, 04:24 PM
I do in my settings but not sure how SFML goes about the setup behind the scene...