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Maniphest T53837

Sculpt glitches when using Eevee
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Description

Blender Version
Broken: 97e2b0c594a0
Worked: Not sure if it ever did.

Short description of error
Artifacts (light variation, ghosting) when sculpting with Eevee.

Exact steps for others to reproduce the error

Open the following file and continue sculpting:

dyn28.blend156 KBDownload

You will soon get artifacts like:

To reproduce from scratch you can start with a sphere, subdivide a few times. I had to turn dyntopo and sculpt a bit before turning off. But I'm not sure if it's related, or just that dyntopo gives me a particularly messy mesh.

Related Objects

Event Timeline

Dalai Felinto (dfelinto) created this task.Jan 19 2018, 1:33 PM
Dalai Felinto (dfelinto) assigned this task to Campbell Barton (campbellbarton).Jan 19 2018, 1:52 PM
Dalai Felinto (dfelinto) lowered the priority of this task from 90 to 50.
Dalai Felinto (dfelinto) added a subscriber: Clément Foucault (fclem).

So, originally I created a file in 2.79, used dyntopo a bit, turned it off. If I open the file in 2.8 I get artifacts. This is the file originally shared above. However, if I export the file as obj and re-import it, the mesh is fine (I had to clear Sharp for edges and make it Flat shaded to match the look of the other mesh).

In fact if you put both meshes side-by-side you can see that the dyntopo one is darker the moment you start sculpting (the one on the right):

dyn28_plus_obj.blend235 KBDownload

The same is valid for Clay.

Clément Foucault (fclem) added a comment.Jan 21 2018, 11:45 PM

Ok got it it's caused by TAA. Put the viewport samples to 1 and it disappear.

Now I (or someone else) need to disable TAA when doing a sculpting stroke...

Campbell Barton (campbellbarton) moved this task from Backlog to EEVEE Renderer on the BF Blender: 2.8 board.Jan 24 2018, 12:40 AM
Dalai Felinto (dfelinto) mentioned this in T52254: Blender 2.8 - Sculpting: Mesh loses all progress on ctrl+z (dyntopo) (Eevee).Jan 25 2018, 1:50 PM
Dalai Felinto (dfelinto) merged a task: T52246: Blender 2.8 - Sculpting: Mesh acts strange when using dyntopo or switching engines (see description).
Dalai Felinto (dfelinto) added subscribers: Alex (GreenXenith), Vuk Gardašević (lijenstina).
Campbell Barton (campbellbarton) mentioned this in T54387: 2.8: Code-Quest (Topics we plan to cover).Mar 21 2018, 12:32 PM
Brecht Van Lommel (brecht) edited projects, added BF Blender; removed BF Blender: 2.8.Dec 11 2018, 3:09 PM
Brecht Van Lommel (brecht) changed the task status from Unknown Status to Resolved.Mar 26 2019, 1:33 PM
Brecht Van Lommel (brecht) added a subscriber: Brecht Van Lommel (brecht).

Already fixed it seems.