Lightmap\render to texture problem.

Joao Sapiro

i usually use the normal map to get ambient oclusion details , but something that has been driving me insane is that using lightracer, white material with normal bump assigned wont render the lightmap with normal detail.

So i use a skylight, shadows on 10 spls blabla, same material, it renders the ambient oclusion with normal map detail, the problem is some jaggs that appear in the AO , its VERY annoying since i have to clean by hand everytime..I just select the mesh, add lightmap and render.



heres an image :

AlexanderLawrence

It's hard to make sense of that image, but what I see is grain and aliasing.

The grain is because your samples are too low. I usually use between 16-20 (using a bit of surface or gaussian blur in Photoshop will help also).

The aliasing problem will be minimized if you render the texture at 2 or 3 times the size you need, then shrink the image in Photoshop. Alternatively, you could turn on global supersampling, but it takes even longer than rendering at higher res.

Joao Sapiro

well, im ok with the grain , the thing i those vertical lines messing around the image, and rendering 2 to 3 sizes is oerkill eheh..

imurpet

have you tried turn off the lightracer,just use the 3dmax default scanline render,and set the render slot to shadow map instead of light map?

SuperOstrich

Hard to tell from your pic, but to me it looks like your normal map is causing a seam where those vertical lines are. Do your UVs have a break or do they mirror along those lines?

Joao Sapiro

nop, no mirror, its continuous , no brokenverts etc

snap.crackle.pop

Johny you got to tell me how you paint those wonderful eyes, really classy