"Tom & Lu Melly" <all### [at] tomandlucouk> wrote in message
news:3e2c89d9@news.povray.org...

... or to put it another way, the sample texture in the docs at 3.9.10 is
broken, and the statement (and similiar statements elsewhere):

"Another touch we want to add to the cloth are some wrinkles as if the cloth had
been rumpled. This is not another texture layer, but when working with layered
textures, we must keep in mind that changes to the surface normal must be
included in the uppermost layer of the texture. Changes to lower layers have no
effect on the final product (no matter how transparent the upper layers are)."

would appear to be wrong.

I've found that the work-around is to place the normal in all of the layered
texture's distinct textures, but this *seems* to cause a slow-down (well, it is
slower, but given the normal is being applied to a larger surface, the slow-down
may not be gratuitous).

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