Fog Issues

[Jusser]

i got a bug with some fog, if i make fog in a square room, i got strange shadow lines on the walls, if i put the fog something away from it it says: entity 0 brush 9 fog has multiple visible sides,

or something..

can some1 help me, its pretty annoying..

[o'dium]

Thats called zFighting. Make the fog bounds go slightly into the brush, i.e. dont make the actual fog volume flush with the empty space, instead make it go into the walls slightly. That should stop it.

[obsidian]

entity 0 brush 9 fog has multiple visible sides

Fog brushes can have at maximum, one visible face. It can either be a universal fog volume encompassing the entire bounds of the map, or it can have a single visible face from which you can enter into the fog volume (like the "fog of death" pits). If two or more sides are exposed to 'open air' then you will get this error message.

[Jusser]

instead make it go into the walls slightly.

how much is 'slightly'?
cause, i have a wall of 32 wide, and so i decided to make the fog go into the middle of it, (so 16), but i still have the shadow bug. does it have to go further or do i have to place it something back?

[obsidian]

Got a screenshot? I don't think it's a z-fighting issue, fog sides are culled. It's probably something else.

Split this into its own topic.

[Jusser]

sorry it took a while, dinner

here it is: http://www.plaatjesupload.nl/bekijken/1117458.html
( yea dutch site, i dont care )

the black strip is what i mean ^_^

oh and, this is a screenshot with the fog something in the wall

[Jusser]

i'd like a reply!

[Hipshot]

Calm down, some one will reply evidently...

[Castle]

q3map2 didnt have some kind of ambient occlusion setting did it?
You know, where it artificially makes corners and crevices darker than their surroundings. It might be a bug in this case where it treats the fog brush as if it is structural. Could be the light entity above the fog needs to messed with a bit as well.

Try making a shader for your fog and add a small value for it to cast surface light if all else fails.

You are using the latest compile tools right?

[obsidian]

Could you post the fog shader and compile settings?

[Jusser]

i don't use q3map2 actually, i don't think it has to do with the compiling.

and the shader of the fog is just the one from what quake 3 used too: sfx/hellfog

it doesn't really matter if it gets fixed or not, cause i already use something else, but would be nice for in the future

[obsidian]

i don't use q3map2 actually, i don't think it has to do with the compiling.

Well whatever you are using to compile is most likely causing the issue, it looks like the fog was casting shadows. In the future, you might want to mention 'little' details like that in the first place so everyone else doesn't go off on a wild goose chase on your behalf.

[Jusser]

well thanks anways

[Castle]

q3map2 is a godsend for quake 3 levels.
Why would you not be using it?

[fKd]

im guessing he did not know it existed.

get it dude! its the best tool for q3 mapping next to gtkrad