CGTalk - Help with MR and Shadows

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DracoNB

11-10-2004, 12:52 AM

Hello,

I'm having some problems with Mentral Ray and shadows for an animation and noticed that it is displaying shadows on my background (sphere with normals fliped), even when the cast/recieve checkboxes are unchecked in the properties setting.

I did a quick test scene to try and fix this problem and noticed that scanline rendering works fine, but as I am using Mentral ray materials in my scene I can't switch back.

Is there any way for me to tell Mental Ray to ignore my background, or is there a better way that I can do the background for it?

The scene is a space station with a space background thats mapped to the sphere.

Thanks!
DracoNB

PS: I just wrote a longer post for this but hit back on my mouse when going to submit so sorry if I didn't give enough info. :(

-Vormav-

11-10-2004, 06:03 AM

Hey. If your background is a bitmap, then if you create a new 'mental ray' material and apply the bitmap as the surface shader, mental ray won't cast shadows on it.
However, if you're just placing a flipped sphere around your scene, it's probably better to just include the material for the sphere as an environment map. Go to rendering->environment and set an environment map there. Mental Ray won't case shadows on environments.
Good luck.

DracoNB

11-10-2004, 07:04 AM

Ah! lol

Changing it from standard to mental ray worked, thanks!

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