Sculpt mode not revealing hidden part of the model if Dyntopo is enabled #81045
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Reference: blender/blender#81045
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.14757 Core Profile Context 20.11.2 27.20.14501.18003
Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2021-01-03 01:04, hash:
1e8f266591
Worked: (newest version of Blender that worked as expected)
Short description of error
Command to unhide part of the mesh ({key Alt H}) has no effect if Dyntopo is enabled.
Exact steps for others to reproduce the error
You cant now.
DyntotoTest.blend
Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'
Added subscriber: @PaulM44
Added subscriber: @lichtwerk
Changed status from 'Needs Developer To Reproduce' to: 'Resolved'
Can confirm in 2.90, but this was fixed already in 2.91, see blender/blender-staging@cacd57b67a
Fix will be in 2.90.1, see #80396 (Potential candidates for corrective releases)
Until then, please try a frash 2.91 build from https://builder.blender.org/download/ (fix is in there)
This problem is worse: Blender crashed using Shift-H and Alt- H in sculpt mode. This is the latest build created Today, 5:34 AM: The UN-hidden didn't appear initially until playing with Dyntopo again and then trying to get the rest of the mesh back with Alt-H caused the crash:
Process: Blender [16535]
Path: /Users/USER/*/Blender 2.91a2.app/Contents/MacOS/Blender
Identifier: org.blenderfoundation.blender
Version: 2.91.0 (2.91.0 2020-09-22)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Blender [16535]
User ID: 501
Date/Time: 2020-09-22 12:40:25.305 -0700
OS Version: Mac OS X 10.15.6 (19G2021)
Report Version: 12
Anonymous UUID: E5A6D88C-4F8E-4F17-D3EF-A97E347D933F
Sleep/Wake UUID: EA3C6A7B-FE6A-46AA-99F7-C0A892FA1093
Time Awake Since Boot: 470000 seconds
Time Since Wake: 2200 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Illegal instruction: 4
Termination Reason: Namespace SIGNAL, Code 0x4
Terminating Process: exc handler [16535]
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_malloc.dylib 0x00007fff6b94df3e nanov2_allocate_from_block.cold.1 + 31
1 libsystem_malloc.dylib 0x00007fff6b92e9b1 nanov2_allocate_from_block + 574
2 libsystem_malloc.dylib 0x00007fff6b92df2b nanov2_allocate + 130
3 libsystem_malloc.dylib 0x00007fff6b92de58 nanov2_malloc + 56
4 libsystem_malloc.dylib 0x00007fff6b92dd7a malloc_zone_malloc + 104
5 libsystem_malloc.dylib 0x00007fff6b92dcf5 malloc + 21 .....
ad nauseam.....
Changed status from 'Resolved' to: 'Needs Triage'
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Needs User Info'
I can't reproduce this crash. @PaulM44 can you provide steps to cause it?
I suspect that my GPU is not a good candidate for using Blender. I seem to find a lot of problems that no one else has mentioned yet.
There needs to be a way of locking the GPU out of using this APP and using just the CPU apparantly--maybe there is and I just don't know about it. I can then go through some of the problems I have found and see if they just disappear.... Let me know.
My description above is exactly how the Hide feature is not working and I have repeated it multiple;e times with the same result, even yesterday. It is really obvious if it doesn't work when going from Modeling with just the horse head showing (still all selected or not) and then to Sculpt and the whole horse is there again until the Dyntopo / Smooth Shading is selected and just the head is there again.
Here are requirements for Blender: https://www.blender.org/download/requirements/
What is your GPU? Can you click on Help > Report a Bug and update description?
There are reports with GPU glitches and such on MacOS, since they decided to drop support for openGL. Using CPU only is technically possible with SW openGL emulation, but it is very slow.
My GPU is a premium buy for Mac:
Radeon Pro Vega 48:
iMac:
The rest of the system is 1T SSD drive with 500G SSD USB 3.0 for cache / extras.... The system was bought the end of 2019 with the hope of doing this kind of work since my 2009 Mac would nearly catch fire doing a cycles render. I have been having continuous problems in unexpected ways and wonder if it is even worth reporting here anymore as it obviously is not a supported system as no one else has these problems. Very disappointing indeed. I am not going back to MS after the constant crash problems with Vista. I wonder if any video card available for this system would work any differently with openGL not supported.....
Changed status from 'Needs User Info' to: 'Needs Triage'
I have no experience with mac HW so you would be better off looking/asking on forums. We are working on vulkan graphics engine that should work much better on mac, it takes time though.
But having said that your system is not unsupported technically. This may be a valid bug, but without similar HW I can't reproduce it unfortunately.
Changed status from 'Needs Triage' to: 'Needs User Info'
Since quite a bit of time has passed (and there have been numerous fixes in this area):
@PaulM44 : could you check if this is still an issue for you? Please also try this with a fresh build from https://builder.blender.org/download/
USING: Blender-2.92.0-5424b4821d28-macOS (6 Jan 2021)
Subdivided default cube 3 times and clicked on Modeling tab. Selected a corner section and hit Shift-H. With selected corner section only showing, clicked on Sculpt tab. Clicked on Dyntopo square and changed Resolution to 11.7 and did some quick sculpting.
DyntotoTest.blend
Changed status from 'Needs User Info' to: 'Needs Triage'
Sculpt mode not showing (Shift-H) unhidden modelto Sculpt mode not revealing hidden part of the model if Dyntopo is enabledChanged status from 'Needs Triage' to: 'Confirmed'
Added subscriber: @PabloDobarro
Changed status from 'Confirmed' to: 'Archived'
Alt + H and H in Sculpt Mode are Face Sets operators, which are not implemented for dyntopo. Dyntopo still uses the mesh flags for visibility state and does not take face sets into account (neither for visibility or for any other feature that uses face sets). In order to show the entire mesh, you should use the Sculpt -> Show All menu entry, which works as expected.