> It could help you to understand why you are getting that poor > performances > with your pretty fast beast GTX 670M.
Thanks, though I remain mystified. There are few differences I can spot: * you have tree density to 0.7 in the shots, I had it at 2.4 - since there's lots of trees in the scene (it's tropical forest), that would be expected to have an impact * you have cloud density set to 0.4 whereas I have set it to 1, and also in vaguely remember seeing a bit more clouds * you have dds textures used, I have used the regional set - my understanding was that this should affect texture loading times and available resolution, but not really runtime performance, but this needs to be checked -> So I have 4 times the number of trees in the scene and 2-3 times the number of cloud sprites. I'm not completely sure how Rembrandt manages trees, but it could be that since they're semi-transparent they're like the clouds taken out of the deferred rendering approach. Multiple cloud sprites in a row are a significant drain on both vertex and fragment shaders as you may need hundreds of texture lookups - so the available performance for Rembrandt-specific tasks isn't quite the same. My gut feeling is that this can't account for a factor 4 in framerate though, especially since there is still the pixel number working the opposite way this time - I will have to test this. In addition there's the question of having two GPUs. I wonder if they're both utilized for the job - if so, maybe one needs such a setup to get above 30 fps with shadows? It would be helpful if a few other Rembrandt users could give some indication of what framerates they usually get and what the main framerate killers are. * Thorsten ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
