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Old 04-29-2013, 03:06 PM   #1
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Mark Walczak
Chicago, USA
Join Date: Apr 2007
Posts: 563
Shadow Errors

Hi everyone,

I've been doing some look development lately, and noticed a problem in my shadow pass. On any rounded surface (i.e. spheres, cylinders, complex shapes), a harsh line gets rendered on the object where the light begins to fall off. This is causing issues with regard to compositing. Please see my attached examples, and download the scene file for yourself. I've tested this with both R13 and R14 and am seeing the problem in both versions. I've also seen this happen with both Area and Shadow Maps, but my example file is using Area shadows.

Any help you could give would be greatly appreciated.

Thank you so much!

Scene File:
Attached Images
File Type: jpg Cylinder_Shadow_Test.jpg (23.5 KB, 15 views)
File Type: jpg Cylinder_Shadow_Test_shadow_edit.jpg (36.4 KB, 30 views)
Mark Walczak
Old 09-12-2013, 11:02 AM   #2
Will MacNeil
London, United Kingdom
Join Date: Mar 2005
Posts: 861
Have you ticked shadow correction in the multipass settings?

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Old 10-01-2013, 07:53 PM   #3
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Kimmo Rinta-Pollari
CG Artist
Kraphik 3D
Oulu, Finland
Join Date: Jul 2003
Posts: 492
Have you tried to render shadow channels with Open EXR file ?
It could work better with compositing your shadows.
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Old 10-01-2013, 07:53 PM   #4
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