double normals 3ds max...
polycounter lvl 12
A plane has a positive face and a negative face, I think, where the latter has no normal just a black face. How can I get normals on both sides of a flat plane?
For example, a hair plane. Ive thought about making an uber thin box method and I couldent find the option anywhere else, there must be a better way. Thanks!
For example, a hair plane. Ive thought about making an uber thin box method and I couldent find the option anywhere else, there must be a better way. Thanks!
Replies
1)select the faces you want to double side
2)click "Detach" in the command panel and check "detach to element" and "detach as clone"
3)the cloned faces are now selected, click "Flip" in the edit polygon command panel
I'm not too sure but I think in general its more efficient to just add the flipped geo.
I believe double sided materials cost the same as duplicated faces performance-wise. Double sided materials don't light correctly - it's lit based on the face normal, there may be a way to compensate for it with a fancy shader but I think that will be more of a performance hit than duplicate faces.
OK, I was told it doesn't cost as much depending on the engine... so ask your engine programmer or do whatever looks the best.