Extremely low FPS in open gl for bsp_demo?

A place for users of OGRE to discuss ideas and experiences of utilitising OGRE in their games / demos / applications.
M&M
Kobold
Posts: 25
Joined: Thu Feb 24, 2005 9:12 pm
Location: Egypt

Extremely low FPS in open gl for bsp_demo?

Post by M&M »

Well, i was testing with the old demo package (0.15) and i changed the maps being loaded to a few more simpler maps. And i couldnt help but notice that the FPS was really low. Averaging around 30 in a box style map :? . It reached 10 FPS in other maps a bit more advanced.

When i tested ogre on another pc with updated vga drivers (Same card) the results were slightly better but not too much. So i downloaded the new demo pack (actually, i was unaware i was using the old one) and i tried again on the pc with old drivers. Surprisingly the fps was ALOT smoother. However, when i tried it on the pc with the newer drivers the FPS was even more terrible !! :shock: It was really wierd to see that, i tried changing the maps but the fps was still not satisfactory.

The VGA card is the radeon 9200 with 64mbs of memory. Its not dazzling but its powerful enough in my opinion. Other bsp based games play on both pcs very well so i cant see why there is a sudden drop in the fps for ogre.

Using DX9 the FPS seems to sky rocket into a stable 100 fps.

Also, trying the terrain demo (1.0.0) with ogl, i got almost 0 FPS (and spend 10 minutes trying to quit). It worked very well with the new drivers though.

So can anyone tell me why FPS is being low in the bsp demos for open gl and any tips to improve ?
Image
User avatar
IoN_PuLse
Goblin
Posts: 220
Joined: Mon May 31, 2004 5:54 am
Location: Canada

Post by IoN_PuLse »

What version of drivers are you running, operating system?
User avatar
jacmoe
OGRE Retired Moderator
OGRE Retired Moderator
Posts: 20570
Joined: Thu Jan 22, 2004 10:13 am
Location: Denmark
x 179

Post by jacmoe »

Can you run Return to Castle Wolfenstein ?
/* Less noise. More signal. */
Ogitor Scenebuilder - powered by Ogre, presented by Qt, fueled by Passion.
OgreAddons - the Ogre code suppository.
User avatar
sinbad
OGRE Retired Team Member
OGRE Retired Team Member
Posts: 19269
Joined: Sun Oct 06, 2002 11:19 pm
Location: Guernsey, Channel Islands
x 66

Post by sinbad »

If it's fine with D3D, it'll be rubbish GL drivers. With good GL drivers there should be little or no difference between D3D and GL performance.
M&M
Kobold
Posts: 25
Joined: Thu Feb 24, 2005 9:12 pm
Location: Egypt

Post by M&M »

oops, I forgot to mention the system specs.

Pc with old drivers:
2.4ghz/ 256ddram / Win XP pro sp2 / Catalyst drivers v4.9 (release 09/09/04)
Pc with new drivers:
1.7ghz / 256ddram / Win XP pro sp2 / Catalyst Drivers v5.3 (release 03/08/05)
p.s: i got that from the readme, but i think they've swapped the 3 with 8.

I've ran the following tests at the EXACT same position in both maps cause the fps varies at other areas (naturally)
OGL
Average FPS on old drivers for BSP demo: 55 FPS
Average FPS on new drivers for BSP demo: 20 fps

DX9 averages around 80-90 on both pcs.
Can you run Return to Castle Wolfenstein ?
Yes, it runs quite smoothly but i've never looked at the FPS before
Image
User avatar
jacmoe
OGRE Retired Moderator
OGRE Retired Moderator
Posts: 20570
Joined: Thu Jan 22, 2004 10:13 am
Location: Denmark
x 179

Post by jacmoe »

M&M wrote:
Can you run Return to Castle Wolfenstein ?
Yes, it runs quite smoothly but i've never looked at the FPS before
RTCW is being used as an OpenGL benchmark - if you can run it smoothly, then OpenGL probably works OK.
What about Doom III? (That's putting OpenGL to the test even more).
/* Less noise. More signal. */
Ogitor Scenebuilder - powered by Ogre, presented by Qt, fueled by Passion.
OgreAddons - the Ogre code suppository.
M&M
Kobold
Posts: 25
Joined: Thu Feb 24, 2005 9:12 pm
Location: Egypt

Post by M&M »

hmm, i havent tried doom 3 on either of those pcs. i did try it on another pc with a different card (geforce fx 5200) but it was rather slow due to my low ram (256mbs)
Image