Quoting Erik Hofman : > Martin Spott wrote: > > Tiago Gusmão wrote: > > > >> Anyway, my biggest problem right now is that it's eating 10fps in my > >> GF4MX without actually drawing anything. > >> Any tips for increasing performance in render-to-texture? If not, is > >> this performance unacceptable? > > > > I think you are actually facing the most obvious problem of the whole > > idea here: By rendering into a texture you put load on the CPU for > > doing a job that could be much better done by appropriate OpenGL > > hardware. You could try to circumvent this problem by shifting the > > render-to-texture job onto the graphics board, but such a solution > > would come out to be _very_ hardware-specific, i.e.totally > > non-portable. > > Well, we now have a RenderTexture class in SimGear which should take the > burden from the developer for making it portable. > This class however doesn't support MacOS-X (yet, I contacted someone who > has expressed the desire to do so) and the class may fall back to > software emulation when no hardware rendering is available. > > However, most modern and less modern hardware should be able to do it in > hardware.
But people using this feature must optimize their drawing just like we did by using display lists. There are numerous way to get a result. Among them, some are faster than others. -Fred ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid3432&bid#0486&dat1642 _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
