CGTalk - car tail light shader?

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bluestreak

08-13-2003, 10:23 PM

hi all,

does anyone know how to get the grid pattern of the inside
of a tail light.

i tried applying a bump map, but that results in the tail light
appearing bumpy from the outside.

i only want the inside of the light to have the grid pattern,
and the outside to be smooth.

thanks in advance.

pyromania

08-13-2003, 10:35 PM

What if you apply the grid as a transparency map. Make the grid lines a liitle less transparent then the boxes. Or you could keep the bump map but put another piece of geometry over it, and give it a transparent shader.

dmcgrath

08-13-2003, 11:46 PM

Several things can be easily done. The first two that come to mind are:
Making two seperate pieces to the taillight, One inside and one outside.
Or applying two different shaders to your object, but of course, the object in question has to have some thickness to it. You will always need two surfaces. Basically what pyro already mentioned.

bluestreak

08-14-2003, 04:30 AM

thanks for the response pyromania and dmcgrath, i'll try that

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