Increaes Doom3 performance by up to 40% doom

[Guest zerodamage]

http://www.beyond3d.com/forum/viewtopic.php?t=14874

[Guest zerodamage]

A few people are getting artifacts in some places. This is a quoted idea from Humus as to how to fix this:

 

Humus

Senior Member

Senior Member

 

 

Joined: 06 Feb 2002

Posts: 2721

Location: Toronto, Canada

 

PostPosted: Sun Aug 08, 2004 7:04 am    Post subject:  Reply with quote

kyleb wrote:

nasty bright white areas with humus' code:

 

http://www.sunflower.com/~kyleb/with.jpg

 

but looks good without:

 

http://www.sunflower.com/~kyleb/without.jpg

 

 

Have you tried changing the specular exponent to something lower. I'm just shooting from the hip here and chose 16 without any particular motivation except that's what I'm usually using in my own code. But it could very well be that the specular exponents in Doom3 generally are lower than that to avoid too nasty specular artifacts. See if the problem remains if you lower it to for instance 12 or 8.

 

Like this instead:

PARAM specExp = { 8, 0, 0, 0 };

Edited August 8, 2004 by zerodamage

[Guest zerodamage]

Here is a tweak guide I found. Looks promising.

 

http://www.viperlair.com/articles/howto/software/tweakd3/