Warp nous apporta ses lumieres en ce 21-01-2007 10:13:
> Alain <ele### [at] netscapenet> wrote:
>> Layered textures are slower than simple oned as each layer have to be evaluated 
>> (but only if behind a transparent part of the preceding one(s)). So, yess, 
>> layered textures do slow you down

>   If I'm not completely mistaken, each individual texture in a layered
> texture is evaluated fully (in the same way as in an average texture map).
> This means that, for example, if you have 10 textures layered, each one
> reflective, 10 reflection rays will be shot for each evaluation of the
> layered texture.

>   If you have this situation, try turning off reflections for the textures
> which really don't need them.

OK. It's beter to have only one with reflection (most importent), phong and 
specular.

-- 
Alain
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Don't cry because it is over, smile because it happened.

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