hi Andreas, Dirk
Andreas Zieringer wrote:
looks like you are using too much memory on the graphics card. After
optimizing the materials with vred (this reduced the textures from 120MB
to 40MB) I got about 30 fps on my FX 5900 Ultra.
mhm. When I display used texture memory size (using the stats), it
only states about 40 MB - but which size do stats show? The size of
unique files used? If materials are not shared I think we indeed have
the solution ;)
Was this an optimization that in earlier OpenSG revisions (as in 1.2
and 1.3 dailybuilds) occured automatically? This would explain the
change in speed with unchanged datasets I did experience. It's true that
the data I load has a lot of textures assigned - not too many different
ones and the wrl original format is quite - let's say - a bit
suboptimal, structurewise.
About the pot / npot issue - materials indeed don't seem to be scaled
automatically to pot - at least OSG::Image::scaleNextPower2() doesn't
seem to be called by the loaders. So I'll do that manually, right - good
point on that. Might explain why one of the driver revisions runs fast
while others don't - maybe nvidia once did special handling for npot
textures ...
Anyway, I now get about 20 fps on the fx1300, fx 3400 runs at 50 -
which is what I expected :) One thing I still find strange is that the
machine with the old driver revision runs at full speed regardless of
texture usage optimizations ..
Thanks, this helped a lot - best regards,
-.jan.-
--
Jan Wurster :: developer
IC:IDO GmbH :: Jurastr. 8 :: 70565 Stuttgart :: Germany
http://www.icido.de :: phone +49 711 27 303 163
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