No shadows appear in Renders, but they're switched on!

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  08 August 2009
No shadows appear in Renders, but they're switched on!

Hi, I'm having a strange problem in Maya and Mental Ray, I have a Direct light for Sun, and I have raytraced shadows switched on but when I render just using GI and not FG no shadows appear. Why is this?

Thanks
 
  08 August 2009
Version?

Which Maya version are you using?

Perhaps post a render so we can see?
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  08 August 2009




Here's a render, and a screen grab. I'm using Maya 2008, I don't know why no shadows are being cast, its very strange. Do you have to render with FG turned on to see shadows? The FG renders take too long.

Thanks for the help
 
  08 August 2009
Are the shadows enabled in the render globals as well?
 
  08 August 2009
Also, your ray depth limit is way too high unless you have an insane amount of transparent surfaces hidden in that landscape...
 
  08 August 2009
Looks like there is a giant sphere enclosing the scene. If this sphere casts shadows it will block light and shadows from the directional light to enter the scene.
If this is the case uncheck 'Casts Shadows' under Render Stats on the sphere.

/eric
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  08 August 2009
Agreed. Hopefully it's as simple as adjusting your environment sphere.

Also, FG should never take "too long". It's highly tweakable and you should be able to experience very fast FG if your settings are proper.

Those ray-depth settings are seriously absurdly high, especially for a scene with no complex glass or gems!
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Commodore 64 @ 1MHz
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"Like stone we battle the wind... Beat down and strangle the rains..."
 
  08 August 2009
Stefan, probably not the appropriate place to ask but i mailed you acouple of days ago asking if you had a tutorial about celulite with no answer.. Did you have one or no?
 
  08 August 2009
Originally Posted by Sybexmed: Stefan, probably not the appropriate place to ask but i mailed you acouple of days ago asking if you had a tutorial about celulite with no answer.. Did you have one or no?
Celulight is not publicly available so I don't see the reason for a tutorial.

Sorry for going off topic.
 
  08 August 2009
Hi, thanks epq! That worked, I forgot about the Sky sphere casting shadows. Its all rendering correctly now. Cheers
 
  08 August 2009
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