Darats wrote:

> Is there something like a "change all materials to a white pigment" command I
> can write in order to avoid manual changing of all the object's material ?

Not really. The best you could do is to enclose all your texture
statements in an #if (!USE_DEFAULT_TEXTURE) ... #end block and set
the variable to on for plain renders. Something like this might
actually be handy to have built-in, not just for ambient
occlusion but also, e.g., for creating a depth image
based on a gray gradient.

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