Fewer brushes vs. larger "nodraw" area?

[Doran]

this one's confused me a bit, but when you're creating a map is it better to have 1 brush with parts of the texture concealed by walls, or 3 brushes with a nodraw area behind the concealing wall with two textured brushes to either side?

http://img296.imageshack.us/img296/9881/nodrawsxz5.png

black = nodraw texture, red = 'normal' texture (assume top down view)

[DJive]

I'd love to help on this, but for some reason *maybe my own* i can't seem to get what you mean. Whats the "green" for in the E? walls or hallway and "white" is wall area?

Picture 2 is better for displacements and allows better editing later if need be.

[Jive Turkey]

I'm not sure what you mean, but for what it's worth world brush sides completely covered by other world brush sides, such as a mitered corner between two walls, automatically get nodrawwed (http://www.student.ru.nl/rvanhoorn/optimization.php?chapter=nodraw).

If I'm reading that picture correctly, it doesn't matter which way you build the brush work. The first picture will end up cut up like the second picture by the compile tools.

[Doran]

you answered my question already, the green part was just supposed to distinguish between blocks / nonblocks. Also, thanks for the link, rather interesting.