default “Double Side” is on.
Why is on for the default?
I don’t know the reason. I always try to turn it off.
It’s always been on by default hasn’t it ?
Why would you want to turn it off ?
does it save some memory for the engine?
If not, I still like to.
I think double sided actually consumes more memory.
nope, no more memory either way
may be A BIT (think: 3 or four cpu cycles per face, not noticeable) slower, but don’t worry about it.
it is useful to have it off when normals matter (radiosity for example) or to leave it on when you don’t want to think about it (modeling, when you add new faces sometimes they point the “wrong” way).
but it needs to be off for the mirrored linked duplicate trick to work right (else one side is dark)
I think the default is fine
I really doubt it takes more CPU cycle, since you can’t really show both side at once. And a backside will show black anyway if double sided is off.
Martin
Herm,
double side is an obscure feature bounded to game engine and radiosity (if I’m not mistaken)
Surely in rendering and modelling it is useless and you won’t have any benefit in turning it on and off because it is plainly not checked…
Stefano
S68: What you’re talking about is the TwoSided option which is a per-face option. Double Sided is a per mesh option and actually affects rednering when the No Normal Flip option is turned on. Only faces which are Double Sided or are facing the camera (normals) are rendered. However, by default, Blender flips the normal to make them face the camera at render time, so you have to turn that off to really see what Double Sided does.
It can be useful if you want to move your camera away from your target through obstacles whitout having to move them to another layer.
Martin