freddd Posted October 16, 2013 Share Posted October 16, 2013 Hi all! I have a scene with 2 areaLights and one environment light (rendering mode: ray tracing background) Metaballs are copyed on points by copy sop. So i have strange artifacts on some random frames showed on the picture. Its strange, but when i try to rerender this frames this black thing does not disappear. When i convert metaballs to geometry through ConvertMeta sop nothing changes so it defenetly not a geometry problem. Rop node refract limit : 3 , reflect limit:1, diff limit :1 any ideas? Quote Link to comment Share on other sites More sharing options...
mangi Posted October 16, 2013 Share Posted October 16, 2013 (edited) Just a wild shot . can you add the correct normals after the ConvertMeta sop. Mangi Or put up the geo so we can test Edited October 16, 2013 by mangi Quote Link to comment Share on other sites More sharing options...
freddd Posted October 16, 2013 Author Share Posted October 16, 2013 Thanks Mangi, but i think i found solution. After decreasing raytraycing bias (0.0001) the black spots disappeared. Quote Link to comment Share on other sites More sharing options...
mangi Posted October 16, 2013 Share Posted October 16, 2013 Cool , Glad you found the correct settings cheers mangi Quote Link to comment Share on other sites More sharing options...
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