Sculpt : Enabling Smooth Normals inside Dynatopo tab and painting a Mask hard crashes Blender 2.83.3 LTS #79366

New Issue

Fasit · 2020-07-29T12:19:56+02:00

Fasit commented

2020-07-29 12:19:56 +02:00

System Information
Operating system: Windows
Graphics card: ATI Radeon 6850 HD

Blender Version
Broken: 2.83.3 LTS ++
Worked: 2.79b

Short description of error
Enabling Smooth Normals inside Dynatopo tab and painting a Mask hard crashes Blender 2.83.3 LTS

Exact steps for others to reproduce the error

Add a cube.
(Optional) Make sure AutoSmooth is disabled.
Enter Sculpt mode.
Enable Dynatopo
Disable Smooth Normals.
Enable Smooth Normals.
Choose Mask Brush and continously paint a mask on the cube.... Hard crash..

Here a video of above steps with crash and without crash on same version.
283.3_MaskSmoothNormalsCrashFile--startup.blend
BL283-3-LTS-Mask&SmoothNormalsCrash.mp4

**System Information** Operating system: Windows Graphics card: ATI Radeon 6850 HD **Blender Version** Broken: 2.83.3 LTS ++ Worked: 2.79b **Short description of error** Enabling Smooth Normals inside Dynatopo tab and painting a Mask hard crashes Blender 2.83.3 LTS **Exact steps for others to reproduce the error** Add a cube. (Optional) Make sure AutoSmooth is disabled. Enter Sculpt mode. Enable Dynatopo Disable Smooth Normals. Enable Smooth Normals. Choose Mask Brush and continously paint a mask on the cube.... Hard crash.. Here a video of above steps with crash and without crash on same version. [283.3_MaskSmoothNormalsCrashFile--startup.blend](https://archive.blender.org/developer/F8730550/283.3_MaskSmoothNormalsCrashFile--startup.blend) [BL283-3-LTS-Mask&SmoothNormalsCrash.mp4](https://archive.blender.org/developer/F8728167/BL283-3-LTS-Mask_SmoothNormalsCrash.mp4)

Fasit commented

2020-07-29 12:19:56 +02:00

Added subscriber: @ygtsvtr

Philipp Oeser commented

2020-07-30 10:36:41 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-07-30 10:36:41 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Philipp Oeser commented

2020-07-30 10:36:41 +02:00

Cannot reproduce here

System Information
Operating system: Linux-5.7.10-201.fc32.x86_64-x86_64-with-fedora-32-Thirty_Two 64 Bits
Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100
version: 2.91.0 Alpha, branch: master, commit date: 2020-07-30 07:45, hash: 742ad5acbc (also tested 2.83.3)

Just to make sure:

are GPU drivers up to date? [which driver version are you using?]
does this happen wit factory Defaults as well?
does this happen in a fresh build from https://builder.blender.org/download/ as well?

Cannot reproduce here **System Information** Operating system: Linux-5.7.10-201.fc32.x86_64-x86_64-with-fedora-32-Thirty_Two 64 Bits Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100 version: 2.91.0 Alpha, branch: master, commit date: 2020-07-30 07:45, hash: `742ad5acbc` (also tested 2.83.3) Just to make sure: - are GPU drivers up to date? [which driver version are you using?] - does this happen wit factory Defaults as well? - does this happen in a fresh build from https://builder.blender.org/download/ as well?

Fasit commented

2020-07-30 12:52:52 +02:00

Gpu drivers are the latest available for the card (non beta or non alpha) (its a an old card).

Edit : Gpu Drivers version 15.301.1901.0

Edit 2: I checked the website for drivers again, the site shows a 15.7 driver but when trying to install it says the latest drivers (15.301.1901) are installed and wont let me override the drivers. So this might be the WHQL driver supported for this card; maybe 7800+series or higher cards might be able to install that driver; but I'm not able to.

But I tested with factory defaults as well; first time on a non subdivided cube it seemed to work; then I re-tested (fresh Blender execution, fresh defaults). This time I added a bevel modifier, subdivided the default cube 6 levels and applied the modifiers. Then I redid the exact steps and could reproduce again. So the number of vertices might play a factor here...

Edit: Tested with a nightly build from buildbot. 2.90.0-a8d058dbf42f-windows64 can also reproduce it on that version.

Gpu drivers are the latest available for the card (non beta or non alpha) (its a an old card). Edit : Gpu Drivers version 15.301.1901.0 Edit 2: I checked the website for drivers again, the site shows a 15.7 driver but when trying to install it says the latest drivers (15.301.1901) are installed and wont let me override the drivers. So this might be the WHQL driver supported for this card; maybe 7800+series or higher cards might be able to install that driver; but I'm not able to. But I tested with factory defaults as well; first time on a non subdivided cube it seemed to work; then I re-tested (fresh Blender execution, fresh defaults). This time I added a bevel modifier, subdivided the default cube 6 levels and applied the modifiers. Then I redid the exact steps and could reproduce again. So the number of vertices might play a factor here... Edit: Tested with a nightly build from buildbot. 2.90.0-a8d058dbf42f-windows64 can also reproduce it on that version.

Philipp Oeser commented

2020-07-30 13:05:58 +02:00

It might be best to just share that file here (makes sure we are all on the same page...)

Fasit commented

2020-07-30 13:17:12 +02:00

Here you go... 283.3_MaskSmoothNormalsCrashFile--startup.blend

Here you go... [283.3_MaskSmoothNormalsCrashFile--startup.blend](https://archive.blender.org/developer/F8730550/283.3_MaskSmoothNormalsCrashFile--startup.blend)

Philipp Oeser commented

2020-07-30 13:27:13 +02:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

Philipp Oeser commented

2020-07-30 13:27:13 +02:00

Hm, still cannot reproduce...

Richard Antalik commented

2020-08-01 23:08:21 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-08-01 23:08:21 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Archived'

Richard Antalik closed this issue

2020-08-01 23:08:21 +02:00

Richard Antalik self-assigned this 2020-08-01 23:08:21 +02:00

Richard Antalik commented

2020-08-01 23:08:21 +02:00

Thanks for the report. This GPU is below the minimum requirements for Blender, so there is no longer support for it. https://www.blender.org/download/requirements/

Installing the latest graphics driver sometimes helps to make such GPUs work, see here for more information. https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html

If that doesn't help, you can use Blender 2.79: https://www.blender.org/download/previous-versions/

Thanks for the report. This GPU is below the minimum requirements for Blender, so there is no longer support for it. https://www.blender.org/download/requirements/ Installing the latest graphics driver sometimes helps to make such GPUs work, see here for more information. https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html If that doesn't help, you can use Blender 2.79: https://www.blender.org/download/previous-versions/

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Sculpt : Enabling Smooth Normals inside Dynatopo tab and painting a Mask hard crashes Blender 2.83.3 LTS #79366