Sculpt: crash when using radius sensitivity #32381

Closed
opened 2012-08-22 03:42:11 +02:00 by Jean Ayer · 4 comments

%%%Sculpting with a tablet and brush sensitivity set to radius, a very light stroke of the tablet frequently and abruptly crashes blender. It's difficult to reproduce intentionally, but always seems to occur during this sort of stroke. It's quite likely that the slowdown caused by tiny brush sizes during sculpting is a known issue. To remedy this, I feel a minimum size for brush radius may help. For it to be configurable would be even better, as the user could prevent unintended slowdown - but perhaps at least a hardcoded minimum size would help prevent the crashing.

The slowdown is at least very replicable - place multires on a mesh, subdivide and sculpt with an unreasonably tiny brush (size 2 for example). Perhaps this only occurs on dated hardware, but the slowdown causes Blender to temporarily cease responding and too often crash outright. Perhaps the values become too tiny? As a user, I feel unable to safely use this fairly integral feature.%%%

%%%Sculpting with a tablet and brush sensitivity set to radius, a very light stroke of the tablet frequently and abruptly crashes blender. It's difficult to reproduce intentionally, but always seems to occur during this sort of stroke. It's quite likely that the slowdown caused by tiny brush sizes during sculpting is a known issue. To remedy this, I feel a minimum size for brush radius may help. For it to be configurable would be even better, as the user could prevent unintended slowdown - but perhaps at least a hardcoded minimum size would help prevent the crashing. The slowdown is at least very replicable - place multires on a mesh, subdivide and sculpt with an unreasonably tiny brush (size 2 for example). Perhaps this only occurs on dated hardware, but the slowdown causes Blender to temporarily cease responding and too often crash outright. Perhaps the values become too tiny? As a user, I feel unable to safely use this fairly integral feature.%%%
Author

Changed status to: 'Open'

Changed status to: 'Open'

%%%Slowdown is caused by spacing stroke type. You can make it faster for small brushes using Spacing slider in Stroke panel. Can not currently think about reliable way to control this automatically from code.

But i can not reproduce the crash here (linux 64bit) using my bamboo tablet. Maybe somebody else would be more lucky here?%%%

%%%Slowdown is caused by spacing stroke type. You can make it faster for small brushes using Spacing slider in Stroke panel. Can not currently think about reliable way to control this automatically from code. But i can not reproduce the crash here (linux 64bit) using my bamboo tablet. Maybe somebody else would be more lucky here?%%%

%%%fixed r50608.%%%

%%%fixed r50608.%%%

Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
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Reference: blender/blender#32381
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