Re: 2 faces or 2-sided lighting ?

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Lionel Maiaux (maiaux++at++platine.corys.fr)
Wed, 7 Aug 1996 08:26:33 -0600

On Aug 6, 5:45pm, Chris Cederwall wrote:

> If your object is single sided, when you look at it from the back side
> it will not be drawn when backface removal is enabled. Enabling Backface
> removal will usually gain you 20% increase in drawing times on average.

My object is double sided (that's why I must choose between the 2 options I
mentionned in my previous mail).

In this case, I don't understand how backface removal could gain me 20%
increase in drawing time (normals must be tested). Could you explain me why ?

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