RE: [osg-users] UC: reading back values from a FBO

2006-09-05 Thread Poirier, Guillaume
behalf of Howard James Sent: Tue 8/22/2006 11:20 AM To: 'osg-users@openscenegraph.net' Subject: [osg-users] UC: reading back values from a FBO I'm rendering to a floating point texture using a frame buffer object. The render is in high dynamic range but needs to be correctly scale

[osg-users] UC: reading back values from a FBO

2006-08-22 Thread Howard James
I'm rendering to a floating point texture using a frame buffer object. The render is in high dynamic range but needs to be correctly scaled. I need to be able to read back the minimum and maximum values in the frame. How can I go about doing this? (and as fast as possible)   I was thinkin