Multiple Importance sampling for environment broken after mult-threading commit #43999
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Thomas Dinges
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Reference: blender/blender#43999
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System Information
An Ivy Bridge i7 CPU, an ATI HD9xxx GPU, 16 gigs RAM, Windows 7 64 bit.
Blender Version
Broken: Blender 2.74 hash
3824e0f1Worked: Any build done March 11 and before
Short description of error
It looks like the commit to multi-thread the generation of the environmental importance map has broken the feature completely.
Exact steps for others to reproduce the error
Download the .blend and switch to rendered mode, you'll see a lot of white fireflies which should be solid illumination (because of the MIS map), but the map is not generated and/or used in current builds.
.blend
BrokenMIS.blend
Changed status to: 'Open'
Added subscriber: @Ace_Dragon
Added subscriber: @nudelZ
strange setup but yes everything > 512 map res isn't working!
Added subscriber: @candreacchio
This issue was referenced by
60df4d10ffChanged status from 'Open' to: 'Resolved'
Closed by commit
60df4d10ff.This issue was referenced by blender/cycles@66fb5112b4