Sculpt Mode not updating in LookDev or Rendered #58890

New Issue

George · 2018-12-06T21:32:28+01:00

George commented

2018-12-06 21:32:28 +01:00

Operating system: Windows 10
Graphics card: Nvidia GeForce 1060 GTX

Broken: blender2.8, commit date: 2018-12-06 00:27, hash: 74db65e542, type: Release
Worked: (optional)

I don't know if this was already adressed, so sorry for the duplicate if yes :), but when you're in sculpt mode it would be nice if you could sculpt in Rendered shading mode; right now you can only sculpt real time in solid mode; for the changes to happen you need to switch to Object Mode for the changes to take effect in LookDev or Rendered shading modes; here's a video demonstrating:

Sculpt Mode not updating in LookDev or Rendered view.mp4

Create an object; enter sculpt mode, try to sculpt some details; if you're in solid shade mode it works; switch to lookdev or rendered, nothing happens; it would be nice to see the changes real time;

Cheers!

Operating system: Windows 10 Graphics card: Nvidia GeForce 1060 GTX Broken: blender2.8, commit date: 2018-12-06 00:27, hash: 74db65e5424, type: Release Worked: (optional) I don't know if this was already adressed, so sorry for the duplicate if yes :), but when you're in sculpt mode it would be nice if you could sculpt in Rendered shading mode; right now you can only sculpt real time in solid mode; for the changes to happen you need to switch to Object Mode for the changes to take effect in LookDev or Rendered shading modes; here's a video demonstrating: [Sculpt Mode not updating in LookDev or Rendered view.mp4](https://archive.blender.org/developer/F5861082/Sculpt_Mode_not_updating_in_LookDev_or_Rendered_view.mp4) Create an object; enter sculpt mode, try to sculpt some details; if you're in solid shade mode it works; switch to lookdev or rendered, nothing happens; it would be nice to see the changes real time; Cheers!

George commented

2018-12-06 21:32:28 +01:00

Added subscriber: @nomad1983

blender-admin commented

2018-12-06 21:32:28 +01:00

#62307 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#62133 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#57606 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#62069 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#61973 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#60633 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#61865 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#61182 was marked as duplicate of this issue

blender-admin commented

2018-12-06 21:32:28 +01:00

#58230 was marked as duplicate of this issue

Sebastian Parborg commented

2018-12-07 12:05:17 +01:00

Added subscriber: @ZedDB

Clément Foucault was assigned by Sebastian Parborg

2018-12-07 12:05:17 +01:00

Sebastian Parborg commented

2018-12-07 12:05:17 +01:00

I talked to Sergey about this a bit on IRC and it seems like there will be slow down if we are to support this.

George commented

2018-12-07 13:37:41 +01:00

Oh, I understand, it's no big deal, sculpt in solid, then preview for render later, is a fine workflow; thanks for looking into it, cheers!

Sebastian Parborg commented

2019-02-01 17:40:18 +01:00

Added subscriber: @jamesponge

Sebastian Parborg commented

2019-02-04 19:00:02 +01:00

Added subscriber: @WilliamReynish

William Reynish commented

2019-02-04 19:11:21 +01:00

The thing that seems unintuitive, is that it does update if Dyntopo is enabled, which should be heavier.

The thing that seems unintuitive, is that it *does* update if Dyntopo is enabled, which should be heavier.

Brecht Van Lommel commented

2019-02-25 19:11:22 +01:00

Added subscribers: @NathanWondrak, @brecht

Brecht Van Lommel commented

2019-02-25 19:12:24 +01:00

Added subscribers: @Interference, @fclem

Brecht Van Lommel commented

2019-02-26 15:08:08 +01:00

Added subscriber: @szymi

Brecht Van Lommel commented

2019-03-01 04:09:25 +01:00

Added subscriber: @MassimilianoPuliero

Brecht Van Lommel commented

2019-03-01 05:32:01 +01:00

Added subscribers: @MalDuffin, @ThinkingPolygons, @tzj, @lichtwerk

Mal Duffin commented

2019-03-01 08:46:55 +01:00

The thing that seems unintuitive, is that it does update if Dyntopo is enabled, which should be heavier.

I'm just confirming that it does update when Dynotopo is enabled.

I talked to Sergey about this a bit on IRC and it seems like there will be slow down if we are to support this.

I'd take a bit of slow-down in LookDev and Rendered ( which aren't currently supported anyway ) over the consistency of having it work like the other modes ( wireframe and Solid ). If people want the full speed, they can go back to Solid model to sculpt.

> The thing that seems unintuitive, is that it *does* update if Dyntopo is enabled, which should be heavier. I'm just confirming that it does update when Dynotopo is enabled. > I talked to Sergey about this a bit on IRC and it seems like there will be slow down if we are to support this. I'd take a bit of slow-down in LookDev and Rendered ( which aren't currently supported anyway ) over the consistency of having it work like the other modes ( wireframe and Solid ). If people want the full speed, they can go back to Solid model to sculpt.

Sebastian Parborg commented

2019-03-04 11:39:19 +01:00

Added subscribers: @Facu, @Mets

Brecht Van Lommel commented

2019-03-04 18:34:49 +01:00

Setting to high because this gets reported so often.

Demeter Dzadik commented

2019-03-04 18:45:32 +01:00

Just wanted to point out that the mesh also updates when sculpting a shape key in lookdev mode.

Clément Foucault commented

2019-03-07 04:47:31 +01:00

Added subscriber: @Sergey

Clément Foucault commented

2019-03-07 04:47:31 +01:00

This is only for standard sculpt mode (no multires or dyntopo):

I have a patch for it but it does have problems: P926

In this patch I'm directly tagging ID_RECALC_GEOMETRY because otherwise the eval object is not updated with the new data. Also doing this invalidates the batch cache so no need for partial invalidation.

Also for some reason in Dyntopo the mesh disappear randomly (or is replaced by the "non-optimized-drawing" version) after a stroke (caused by ob_eval->sculpt->pbvh is NULL). This looks like a threading issue to me but running with -t 1 and disabling threaded sculpt did not help.

@Sergey Is there another way to flush down the geometry changes? so we could at least do partial (only pos & nor) batch cache invalidation.

I know this is a hack but would it be enough to do this only when the viewport who is doing the stroke is in lookdev or render mode?

This is only for standard sculpt mode (no multires or dyntopo): I have a patch for it but it does have problems: [P926](https://archive.blender.org/developer/P926.txt) In this patch I'm directly tagging ID_RECALC_GEOMETRY because otherwise the eval object is not updated with the new data. Also doing this invalidates the batch cache so no need for partial invalidation. Also for some reason in Dyntopo the mesh disappear randomly (or is replaced by the "non-optimized-drawing" version) after a stroke (caused by ob_eval->sculpt->pbvh is NULL). This looks like a threading issue to me but running with -t 1 and disabling threaded sculpt did not help. @Sergey Is there another way to flush down the geometry changes? so we could at least do partial (only pos & nor) batch cache invalidation. I know this is a hack but would it be enough to do this only when the viewport who is doing the stroke is in lookdev or render mode?

Sergey Sharybin commented

2019-03-07 09:54:22 +01:00

I know this is a hack but would it be enough to do this only when the viewport who is doing the stroke is in lookdev or render mode?

We had some checks like that in 2.7. The issue is that it is not uncommon to have a separate rendered viewport, to see how the sculpted object looks like. So you can't really rely on just a single viewport.
Probably, something to do together with the customdata mask, where we need to accumulate flags across all the viewports as well?

Keep in mind, those "flushes" makes sculpting considerably slower, and are to be avoided as much as possible.

(caused by ob_eval->sculpt->pbvh is NULL). This looks like a threading issue to me but running with -t 1 and disabling threaded sculpt did not help.

I'm not sure wt which exact point pbvh is NULL.
If this issue happens with a single object with no modifiers, then the only operations which might run in parallel is the batch cache tag for redraw and geometry. However, with -t 1 or --debug-depsgraph-no-threads those will not run in parallel, and the evaluation order will be deterministic.

Dependency graph update and viewport drawing could never have threading issues, drawing happens after dependency graph threads have finished their work.

> I know this is a hack but would it be enough to do this only when the viewport who is doing the stroke is in lookdev or render mode? We had some checks like that in 2.7. The issue is that it is not uncommon to have a separate rendered viewport, to see how the sculpted object looks like. So you can't really rely on just a single viewport. Probably, something to do together with the customdata mask, where we need to accumulate flags across all the viewports as well? Keep in mind, those "flushes" makes sculpting considerably slower, and are to be avoided as much as possible. > (caused by ob_eval->sculpt->pbvh is NULL). This looks like a threading issue to me but running with -t 1 and disabling threaded sculpt did not help. I'm not sure wt which exact point `pbvh` is NULL. If this issue happens with a single object with no modifiers, then the only operations which might run in parallel is the batch cache tag for redraw and geometry. However, with `-t 1` or `--debug-depsgraph-no-threads` those will not run in parallel, and the evaluation order will be deterministic. Dependency graph update and viewport drawing could never have threading issues, drawing happens after dependency graph threads have finished their work.

Sebastian Parborg commented

2019-03-07 13:01:15 +01:00

Added subscriber: @DinIulianSilviu

blender-admin commented

2019-03-07 18:08:32 +01:00

This issue was referenced by d77b7b097d

This issue was referenced by d77b7b097d3411a0d28e579bb2d67c8dfa8d04c7

Clément Foucault commented

2019-03-10 03:36:08 +01:00

Changed status from 'Open' to: 'Resolved'

Clément Foucault closed this issue

2019-03-10 03:36:08 +01:00

Szymon Warunek commented

2019-03-15 14:37:54 +01:00

thank you Dear Developers for your hard Work! - i am happy,because this bug is finally fixed - i can see polygons in viewport,when i use sculpt tool in material view,thank you for fixing this issue.

Ivo commented

2019-05-18 20:36:01 +02:00

Added subscriber: @idd

Ivo commented

2019-05-18 20:36:01 +02:00

Actually there is still the issue. Just downloaded build from May, 17th and when I tryied to use Brush in Sculpting Mode with Multiresolution Modifier I didn't see any change in View untill I switch Quality to any other numbers (doesn't meter to lower or upper). I have to switch it every time then I want to see how is going to looks like. Ohh, and it doesn't work in all mods (Solid, LookDev and Rendered).
I tried on Mac and PC - same.

Actually there is still the issue. Just downloaded build from May, 17th and when I tryied to use Brush in Sculpting Mode with Multiresolution Modifier I didn't see any change in View untill I switch Quality to any other numbers (doesn't meter to lower or upper). I have to switch it every time then I want to see how is going to looks like. Ohh, and it doesn't work in all mods (Solid, LookDev and Rendered). I tried on Mac and PC - same. ![blnd_bug.PNG](https://archive.blender.org/developer/F7045839/blnd_bug.PNG)

Jakub Badin commented

2019-05-29 17:40:08 +02:00

Added subscriber: @Jakuba

Julian commented

2020-04-03 15:39:12 +02:00

Added subscriber: @joolian.4bes

Julian commented

2020-04-03 15:39:12 +02:00

If you have Multires or Subdivision Surface modifiers, bring the "Preview" value up to get a more accurate representation of the sculpted mesh.

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Sculpt Mode not updating in LookDev or Rendered #58890