CGTalk - bump map problem?

siriso

03-17-2009, 07:05 PM

I just apply a bump map to a wall making it have cracks and dirts on it. I set a negative value to the bump and when I render the sence, the crack on the wall do not flow uniformly.Thats mean some cracks and stipple was supposed to be concave into the wall, but now they are convex on the wall.
What's the problem with my maps?

soulburn3d

03-17-2009, 08:22 PM

What's your lighting like? I know some lighting methods will give the illusion of your bump map being inside out. Can you post a pic?

- Neil

siriso

03-18-2009, 07:38 AM

Oh...I think I know what's the problem now...after I replaced several light sources with a single one, the problem solved.

Thanks for Neil's help

soulburn3d

03-18-2009, 02:32 PM

Cool, glad it worked.

- Neil

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03-18-2009, 02:32 PM

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