Sergey Sharybin 6046c03f5c Cycles: Ignore zero size instances in BVH
In certain types of animation it's possible to have some objects
scaling to zero. In this case we can save render times by avoid
traversing such instances.

Better to do ti ahead of a time, so traversal stays simple.

Reviewers: lukasstockner97, dingto, brecht

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2048
2016-06-06 09:23:53 +02:00
2013-12-24 22:57:27 +06:00
2016-01-04 14:20:48 +05:00
2010-10-13 14:44:22 +00:00
2016-05-21 05:48:10 +10:00
2016-02-10 00:26:12 +11:00
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