Has anyone else noticed this? Is there a cure?
--
- Jussi Koukku -
Now if GPL was Dx9, :)
Alan
AFAIK you are right, it's a poly limit with DirectX but OpenGL doesn't
have the same limitation (or maybe just not yet).
99% detail bias should fix the problem, but cars in the distance visibly
change from 2D to 3D which some find irritating. Probably not as
irritating as a transparent grid though ;-)
Alternatively use earlier versions of some the GPLEA cars (with a lower
poly count), but 99% bias is probably the simplest solution.
Malc.
> >> Has anyone else noticed this? Is there a cure?
> >> --
> >> - Jussi Koukku -
> > I use 99% with my ATI 9700, no problems.
>Has anyone else noticed this? Is there a cure?
First, dissable the Z-axis in the CORE.INI. This will reduce
performance.
Second, use OpenGL instead.
Cheers!
Remco
I did the test at the back of a full AI grid at Monaco and although
the numbers jump around a bit, you can clearly see the big jumps. I
found that the frame rate increased in steps when the Detail Bias
setting was changed from 100 to 99%, 75 to 74% and 26 to 25% while
everything from 74 to 26% for example gave the same framerate and
image quality.
It seems that most or all people get the missing image at 100% bias,
but it only lasts for a few seconds (albeit at the most important part
of the race) until cars move away after the start.
Bob Simpson
> Now if GPL was Dx9, :)
> Alan
Rolf
I've done similar tests long time ago, and my impression was that detail
bias slider is very granular. AFAIR, there're only 4 different settings,
so 99% is the same as 75%.
Doesn't it only happen in DirectX? I've never seen it in OpenGL, but maybe
I don't have enough graphic updates installed.
Alex.
Malc.
Bob Simpson
> Doesn't it only happen in DirectX? I've never seen it in OpenGL, but maybe
> I don't have enough graphic updates installed.
> Alex.
>>*** side effect: the cars are partly transparent for about a second
>>after the flag drops. If I reduce the detail bias the effect
>>disappears. And this seems to be a D3D and/or Ati problem, as I only
>The problem is that the Z-axis buffer is 16 bit, and thus doesn't
>support more then 32000 polygons. There are 2 "solutions".
>First, dissable the Z-axis in the CORE.INI. This will reduce
>performance.
>Second, use OpenGL instead.
OpenGL isn't really a choice with Ati cards, so if the Z-axis thing
doesn't work, I guess I'll just avoid running with full grid ;)
--
- Jussi Koukku -
>>>*** side effect: the cars are partly transparent for about a second
>>>after the flag drops. If I reduce the detail bias the effect
>>>disappears. And this seems to be a D3D and/or Ati problem, as I only
>>The problem is that the Z-axis buffer is 16 bit, and thus doesn't
>>support more then 32000 polygons. There are 2 "solutions".
>>First, dissable the Z-axis in the CORE.INI. This will reduce
>>performance.
>>Second, use OpenGL instead.
>Thanks for the info. I will try disabling the Z-axis... does it affect
>image quality?
Cheers!
Remco
>>Thanks for the info. I will try disabling the Z-axis... does it affect
>>image quality?
>NO, just performance. The Z-axis buffer is used to sort the polygons.
>Those are drawn nearest last. So, if 32000 and a bit polygons are
>drawn, it stops. That's why you see the holes in the cars. If you put
>the slider to the left, less polygons will be drawn, thus no more
>holes.
Bob Simpson
> Ok, I tried disabling Z-buffer, but the fps dropped to about 22. I
> also noticed that max polygon count isn't reached on all tracks.
> Haven't tried that many tracks with full grid, but so far only Monaco
> (Monaco Rocks addons) seems to have this problem.
The first few seconds at the start of an online race are quite
crucial. On the other hand, our league uses a dedicated server, which
means that there'll never be a full grid =)
I'm certainly not going to keep z-buffer disabled, 22fps is far from
acceptable. 99% detail bias is also unacceptable cause my rig can
easily handle 100%. Plus it's very much noticeable.
I'm already trying to live with that 0.5% of ppl who top post, and
it's not easy ;) I'm not taking chances on failing to live with partly
transparent cars.
As if I haven't tried... =)
Anyway, the problem isn't likely to arise in any online race I take
part in. Offline it doesn't really matter.
--
- Jussi Koukku -
