Sculpt mod crashes #73185
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Unbreak Now!
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Reference: blender/blender#73185
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System Information
Operating system: Windows 10 64
Graphics card: Nvidia 1060 ti
Blender Version
Broken: (example: 2.80,
edbf15d3c0
, master, 2018-11-28, as found on the splash screen)Worked: (optional)
Short description of error
When switching to sculpt mod on my object (not verry high poly'- 200k)
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
Model1.blend
Added subscriber: @omer8007
Added subscriber: @lichtwerk
Changed status from 'Needs Triage' to: 'Needs User Info'
Mind sharing that .blend file (otherwise we cannot reproduce...)?
Added subscribers: @Sergey, @PabloDobarro
That file contains a triangulated mesh with 211570 triangles and a Multires with 5 levels of subdivisions. Just by previewing level 1 in object mode Blender is taking 22GB of RAM on my system when calculating the topology, so if it enters Sculpt Mode on level 5 directly it will probably run out of memory. If I apply a regular subdivision surface modifier on it, it also takes about 20GB of memory.
Multires is not intended to be used in triangulated meshes. I think this is a know limitation of OpenSubdiv performance with non quads topology.
@Sergey Is this right or it may be something else happening here?
Added subscriber: @ideasman42
Changed status from 'Needs User Info' to: 'Archived'
Closing since this is an out-of-memory error.