Cycles old behaviour is to hide the duplicator on rendering at all times.
We have since a few months an option in 2.8 to control the duplicator
visibility on its own. However when the duplicator is also duplicated, things
were not working properly.
What we do now is, in addition to the duplicator visibility control, is to not
have the source collection of the duplicator object to ever influence its
visibility when the object is been duplicated.
So if the user wants to reproduce Cycles old behaviour all that is required is
to have different collections, one for the original to-be duplicated objects
that you hide in for the view layer used in the final render. And another
collection with only the first duplicator (which in turn duplicates other
duplicators).
I know this all may sound confusing, so please just give it a try, it's simpler
than it sounds.
This leads to a huge improvement of AntiAliasing quality.
There is no other distribution now and there is not settings displayed to the user. That's for another commit.
This adds midlevel and object/world space for displacement, and a
vector displacement node with tangent/object/world space, midlevel
and scale.
Note that tangent space vector displacement still is not exactly
compatible with maps created by other software, this will require
changes to the tangent computation.
Differential Revision: https://developer.blender.org/D1734
When duplicating a layer collection directly linked to the view layer we copy
the collection and link it.
For all the not directly linked layer collectionns, we try to sync the layer
collection flags, overrides, ...
Also we make sure the new collection is right after the original collection.
We also expose this in RNA, via collection.duplicate().
Was happening when viewport visibility on the particle system is disabled.
This became an issue after c45afcf, but the actual issue goes a bit deeper
and the following aspects were involved:
- Relations builder for particle system was ignoring particle system if
it's visibility is not enabled for viewport. This is something what
shouldn't have been done -- depsgraph relations are supposed to be the
same no matter if it's viewport or render.
- Relation builder was only dealing with duplication set to object, but
was ignoring group duplication.
This is technically a regression in 2.79a-RC as well, so would need to
backport this fix to the branch after extra testing is done here in the
studio.
This is rather a workaround to avoid main thread freeing all glyph caches
at the same time as sequencer uses fonts to draw text sequences.
Ideally we need to either make cache more local, or user-counted or to make
somewhat more global locks. All this ends up in a bigger refactor which is
better for 2.8. For the meantime let's make Blender more stable with a tiny
workaround.
Downside is that keeping zooming things up and down in interface during render
will increase memory usage by unused glyph caches. It's not too bad though,
all unused caches will be freed first time at area zoom after render.
Thanks Bastien for review!
