3f02013b@news.povray.org...
> But the bump effect is nearly unvisible. Something wrong with it?

- Is it radiosity-only lighting? If that's the case, don't forget to add
"normal on" to the radiosity statement.
- be sure to have the whole black->white range in your bump map. Narrow
ranges don't give good bumps.
- replace the pigment map by a simple color (such as white or cyan) so you
can see the effect better during the tests ; then add a finish such as
finish{diffuse 1 ambient 0 specular 1 roughness 1/20} and start from here
- increase the lighting
- change the light position (shallow angles work better)

G.


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