There you go-

The comparison of the mesh / particle looks very interesting. Can you send me that file?

Bake all in general doesnt do anything. It my last test, also cloth or other items wont start baking when using "Bake all". I haven tested 2.81 or latest build though.

Confirmed, checking...

FYI, the skipping of hair particles with Bake All Dynamics was introduced in rB66918b3add4d.
On first sight, I dont see a particular reason to skip [tested non-skipping which seems to work], but this is ancient, so I guess this has never been considered a bug...

Well, I didn't know that the pre-roll feature was removed as I'm a beginner. So, I think it's better to show a warning message when someone tries to bake while entering a negative value. For me, the best thing is to make this feature work again. I know there might be programming limitations but the more features the software has, the better it will be.

This is tied to the simulation having a negative start frame.

Hello & thanks! (Sebbas) Downloaded the latest build last night from blender.org, much better!

The trails in the "with subframes" example seem to produce a "staircase" effect. Will investigate this further.

I think this issue resolved itseld with 0d31127d6ca2. Before that commit, some names were still old ("smoke" instead of "manta") and no additional modifiers could be added. So your bug was probably related to this.

Good catch, I was able to reproduce the issue. It seems there was an issue with the dependency graph. I made the particle emitter use the same setup as the mesh emitter and now I am able to generate decent smoke trails.

Hi Gottfried!

I think this could be a great feature for animation, too, if you have a part of a rig that depends on a simulation. The cloth in a character's clothing could simulate while the animator is moving things, and stop when there's no transform going on. This would only give an idea of what the position of the cloth will be when baked, but it would be useful since you'd catch a lot of mistakes before a lengthy baking process.

FYI: I made a couple of different sims yesterday- and neither did the above, so it's not happening every time.

Note: removed the BF Blender tag, as this is not yet in official 'master' branch (still pending review).

I found another issue - here the fluid is has an offset to both the inflow and the collision object. The domain has been changed in edit mode:

@Sergey Sharybin (sergey) is this a limitation of the cloth simulation?

In T69727#780050, @Jacques Lucke (JacquesLucke) wrote:

Did this work in older versions of Blender? I'm not entirely sure which kinds of interactions the current cloth system supports.

Did this work in older versions of Blender? I'm not entirely sure which kinds of interactions the current cloth system supports.

@Sergey Sharybin (sergey) want to add this to the depsgraph bug fix guide? How to proceed for race conditions in the depsgraph evaluation?

Note the crasher on delete, undo is also fixed by D5755: Fix T68645: Hair Particle Edit - Particle Mirror crash when children are visible in the viewport

You could integrate HairNet in Blender 2.81

This actually seems a running condition issue, likely on depsgraph end.

BLI_assert failed: //source/blender/blenkernel/intern/customdata.c:2099, CustomData_get_active_layer_index(), at 'customdata_typemap_is_valid(data)'
Full backtrace: P1102

This needs bigger design changes to the dependency graph and physics, and while it would be good if we can, it is not a requirement to be fixed for 2.81.

while compiling die manta-flow branch on ubuntu 18.04 i get many errors. there are no errors when compling the masterbranch.
i added the terminalout in a text file.

Note this has been reported before T62882: Dynamic Paint weight paint mode not working?, will merge these reports...

Note this has been reported before T62882: Dynamic Paint weight paint mode not working?, will merge these reports...

Note this has been reported before T62882: Dynamic Paint weight paint mode not working?, will merge these reports...