Undo don't restor proper geometry in sculpt mode #66312
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Reference: blender/blender#66312
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System Information
Operating system: UBUNTU 18.04.02 Linux-4.18.0-25-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 670MX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.116
Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-06-30 19:51, hash:
bbb3500c97Also broke in the last build of 2.79
Short description of error
When you sculpt something with a very hard edge, like a Blob with a strong fallof, when undo there is broken geometry in all the contour were the blob was. It can be seen in the view-port and when you do again a Blob there is broken geometry in that places.
I can see the error also in wire-frame also. The only way to fix the issue is to go with Shift and pas on the surface, that restore the surface and the shading error in the view port, some brushes also fix the issue when you sculpt near this areas. Also cavity is able to see it in the viewport, that is why I think is a problem with the mesh data, and not the shading.
In 2.79 you have to enable smooth shading to see it, you can't see it with shading flat, but the error occurred when sculpting.
Exact steps for others to reproduce the error
Add a cube then a subdivision modifier with 6 subdivisión apply, go to sculpt mode, make a blob with the stroke in drag dot and an abrupt fallof.
Undo
Make a blob again in the same spot
Also present in 2.79:
Added subscriber: @TonatiuhdeSanJulian
Added subscriber: @mano-wii
I can't replicate. Is there any missing step?
No, that is all it is needed, But I think you need to drag the bloob, maybe?
I dragged it and still no difference.
Are you sure you can reproduce this bug in the latest Blender builds?
I just download the last one.
vokoscreen-2019-07-02_18-13-59.mp4
Added subscriber: @ebarranco
@mano-wii The problem exists you need to have smooth shading to see it easily. I can reproduce it.
Same issue in blender 2.79.7 confirmed too.
vokoscreen-2019-07-02_20-18-58.mp4
it is a geometry problem. Here you can see the wireframe.
In eevee is even worst :(
Also something strage happen when you sculpt with the overlay face orientation enable:
Added subscriber: @jfmatheu
Kinda crazy but "cool".... looks like it's weirdly pussing out the 'blob' that suffer a "compression", playing with dots... 2019-07-03 20-49-52.mp4
Any progress in this bug?
Added subscriber: @DanielGrauer
This issue was referenced by
ae7bea265dThe mesh problem is fix, but the visual distortion is still present, Not a big problem though.
Changed status from 'Open' to: 'Resolved'