Original Post
Today I downloaded a newer driver from the nVidia website. Right after that, my game ran 30 frames slower, and the HDR was fubar. First I thought I changed something recently, so I started looking for the problem. The measurement of the average luminance for tone-mapping went wrong, the luminance was much lower, although at some strange spots it was high. I also found out that this was the problem of the slowdown. I'm downscaling the scene 3 times: - Render the original FBO on a quad, but now in a smaller buffer (64x64) - Render the result from the previous buffer to an even smaller buffer (16x16) - Again, but now in a 4x4 buffer This went wrong, and was slow... why? I uninstalled the new driver and got back to 81.95. Thank god, everything was ok again. But I wonder what could be wrong... 30 frames slower and strange graphics because of an update that is supposed to make things better... Anyone experience with that? Greetings, Rick