Problem with Ambient Occlusion in Max (white crevices)

ZimK

So I've been having this problem for a while, whenever I render AO in 3D Max, the deepest grooves are lit. I have this issue regardless of if the grooves are part of the normal map or if they're on the actual model, and they show up with both regular renders (standard and mental ray) and Render to Texture. I'm using a skylight with Cast Shadows checked.

Eric Chadwick

You probably need to increase the AO ray distance, so it searches further for the ray hits. IIRC it's the Spread value in RTT?

ZimK

That baking an AO map rather than a shadow map yeah? Using Mental Ray instead of Scanline? I'm actually not sure what sort of lighting to use when rendering to texture with mental ray on. It doesn't seem to do skylight properlly