Displacement > True crash blender in this file #49324
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Reference: blender/blender#49324
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System Information
Kubuntu Linux 14.04, GTX 960
Blender Version
Broken: 2.78 from buildbot (
96f28f9
)Short description of error
This problem is related to this 'asphalt.blend' test file from this user:
https://blenderartists.org/forum/showthread.php?396697-Cycles-new-microdisplacement-build-and-testing&p=3097111&viewfull=1#post3097111
asphalt.blend
It seems that 'Ffrima' does not reported yet, so I do the report.
Blender crash when you change Displacement to True
Exact steps for others to reproduce the error
Open 'asphalt.blend' file and change Bump to True in Displacement.
Changed status to: 'Open'
Added subscriber: @YAFU
Added subscribers: @MaiLavelle, @brecht, @Sergey
Settings used for musgrave texture are quite insane, they are causing some floating point overflows, resulting in really nasty (inf, nan, fltmax) positions for vertices. This confuses BVH builder a lot.
Not sure what would be a real solution here. On the one hand BVH could become more robust perhaps (binning of such a number wouldn't be fun tho) or maybe we should clamp displacement, or maybe we should clamp node settings..
@brecht, @MaiLavelle any ideas here?
I don't think its good that the node produces such results, but maybe this could be fixed by skipping displacement of vertices when the displacement is inf/nan?
Definitely reject non-finite displacements. Fixing texture node(s) would be nice too, though I think we have to be robust to such values coming from the node system.
This issue was referenced by blender/cycles@59b8b9a0b8
This issue was referenced by
ef8ad66aa2
Changed status from 'Open' to: 'Resolved'