3D coordinates of a 2D point?

Hello !!

I need the 3D coordinates of a point on the screen… I used to use gluProject and gluUnProject to do that with openGL, but as i can’t get the depth value of a pixel, i don’t know how to do…

I thought about a raycasting method, but i try to do a general method, with no knowlege about the scene…

Someone thinks about something ?

Thank you !

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