I hope that I can explain myself. I need to be able to access data that links a pixel on the rendered image to the vertex in the 3D model from which it was rendered. Is there anything in mesa that could do that?
Try picking render mode, or gluProject/gluUnproject.
Could someone point me to some documentation on gluUnProject, all I have is an OpenGL reference guide.
You can find the GLU specification on opengl.org.
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