how would you rank these in their contribution to memory usage and ability to produce lag? just curious.

terrain patches

curve patches

brushes

xmodels

Assuming that their all the same size...

from least to greatest:

1. terrain patches/curve patches

2. brushes

3. Xmodels

As far as i know, the game only renders one side of a patch so thats only one surface, a brush then has 4 sides and 4 surfaces to render, and an xmodel kind of depends on which xmodel were talking about, but i assume that most of the time its more than a brush.

the game only renders one side of a patch so thats only one surface

That depends on the texture, if the texture is a two sided texture then it will render both sides.

another question..

does making repetitive scenery in your map prefabs save on memory?



did I save on memory by making one Titan Barrel a prefab, and copying it throughout the map? as oppose to if they were all stamped in?

or does it only save time?

Prefabs are "stamped" upon compile.

- Phil.

i think the real order is
from the least to the greatest
1-xmodels
2-brush
3-terrain/curves

because xmodels doesnt have collision or use a simplified coll map so it doesnt have to calculate collision for all its faces
then brushes have the feature that the compiler will delete hidden brush sides but they have collision so thats more memory use for your gpu
and finally terrain patches, the same amount of faces you have is the same ammount of collision it has, also terrain tends to be blended which means another patch with same quantity of verts and compiler doesnt remove any faces from a terrain curve patch so i think that would  be the order.