Hi André,
Thanks for the exhustive testing. I don't quite have the same set up
here, but a bit similiar I have a X2 3800, 2GB RAM, Linux, 7800GT x 2,
2 screens (one per card). All the examples you have problems run
great on my system, nothing is slow, no crashes, no artifacts on any
of the screens, frustrating for me as when things break on my machine
I have a good chance of fixing them. Anyway, one should expect all of
the apps, in all of the threading combinations to work well.
A couple of observations:
osgprecipitation makes use of GLSL heavily, and while it vertex
and pixel fill requirments
won't stress a 7900GT, I wouldn't be surprised if inbuilt graphics
will struggle. Could it
be the once of screens is being driven by the NVIDIA 6150?
The osgparticle and osgparticleeffects examples all use CPU based
partilcle systems
which is very diffrent to osgprecipitation so I wouldn't expect
the same issues, or
at least the same causes/effects.
osgplanets in pretty straight forward case of textured geometry
with a few transforms,
if this one doesn't work then my guess is the graphics contexts
haven't been created
managed correctly.
W.r.t different aspect ratios across screens, this is something
that I didn't account
for when setting up the initial aspect ratios. I'll have a look
at the relevant code
today.
With the crashes, is there any pattern to when things crash and
where the crash is?
What happens we you run all the examples on one or two screens?
Do you get the same low performance in threaded modes when you
using osgviewer?
If so then have a look at the stats to see where the problem lies.
Update, Cull, Draw?
Robert.
On 2/15/07, André Garneau <[EMAIL PROTECTED]> wrote:
I did some testing yesterday evening on Windows and here are my results:
{ Platform: Athlon X2 4200+, 2GB RAM, Windows XP latest patches, NVIDIA
GF7900GT & low-end NVIDIA 6150, 3 screens }
Running runexamples.bat for each threading model
Single-Threaded
===============
osgimpostor (extremely slow)
osgplanets (corrupted image on center & right screens - left screen OK) -
will double check my setup
all other examples perform well
CullDrawThreadPerContext
========================
osgprecipitations (slow)
crashes for:
osgdistortion
osgdepthshadow
osgimpostor
osgprerender
osgprerendercubemap
osgshadowtexture
osgsimulation
DrawThreadPerContext
====================
osgprecipitations (slow)
update processing seems to be out-of-sync
(very fast movements when mouse is used)
No smoke/fire effects visible for:
(probably due to issue above)
osgblendequation
osgmultitexture
crashes for:
osgdistortion
osgdepthshadow
osgimpostor
osgprerender
osgprerendercubemap
osgshadowtexture
osgsimulation
osgpick
osgspheresegment
CullThreadPerCameraDrawThreadPerContext
=======================================
osgprecipitations (slow)
update processing normal but performance generally sluggish on all examples
crashes for:
osgdistortion
osgdepthshadow
osgimpostor
osgprerender
osgprerendercubemap
osgshadowtexture
osgsimulation
osgpick
osgfxbrowser
I will try to look at some of these issues this evening.
André
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