Regression in classroom benchmark scene #57934
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Reference: blender/blender#57934
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System Information
Debian Buster 64bit, GTX1080 390.87
Blender Version
Broken:
b0c463a274
Worked: master, and 2.8 prior to change which forbid dupli-group on non-empties
Short description of error
Not sure this was the best solution to ignore duplication. In the reality the duplicated objects is what you care about more than the mesh. So think changing duplicator object to empty to properly keep duplication in place is a more correct solution.
Or create a separate empty object.
Or at least add a warning when opening such files.
Failing silently is not a good thing to do.
Exact steps for others to reproduce the error
Get classroom scene from https://svn.blender.org/svnroot/bf-blender/trunk/lib/benchmarks/cycles/classroom/ and open it in 2.8. All the desks are missing.
Added subscriber: @Sergey
Added subscribers: @ideasman42, @lichtwerk
Confirmed, relating commit is
2eca054e14
.Will happily work on any replacement method that @Sergey suggested (if any could be agreed on), but assigning @ideasman42 first to hear opinions...
The case of having non empty objects duplicating data is quite obscure and leads to hard to debug situations where some object doesn't render, you need to know to look for this setting to turn it off.
We could version patch the blend file to add in empties to instance the group which are parented to the meshes (so as to follow their animation).
The meshes will need render-ability turned off.
Committed classroom blend files which don't instance from meshes, we could still support this, in the short term this means 2.8 can benchmark the file against 2.7.
There are at least one of the following things i still expect to happen:
This issue was referenced by
7fe3d1e7d7
Changed status from 'Open' to: 'Resolved'