`defvert_array_find_weight_safe()` was confusing 'invalid vgroup' and
'valid but totally empty vgroup' cases.
Note that this also affected at least ShrinkWrap and SimpleDeform
modifiers.
This means once an ID is created,
it will keep using the same PyObject instance.
This has some advantages:
- Avoids unnecessary re-creation of instances on UI poll / redraw.
- Accessing free'd ID's gives an exception instead of crashing.
(long standing annoyance!, though this only applies to ID's
and not yet other data that uses the ID's - vertices for eg).
- Allows using instance comparison (a little faster).
Note that the instances won't be kept between undo.
Was doing 2x lookups which is OK for click-select
but this runs on mouse-move and can become slow.
May enable this again if highlighting logic changes.
Also scale hotspot by pixelsize.
- Cleanup array access, move into functions.
- Store allocated size to avoid realloc's on every add/remove.
- Make select editable from Python.
- Rename select callback to select_refresh
(collided with select boolean).
- Call select_refresh when de-selecting as well as selection.
This was cause by some post process not always sampling the highest mipmap.
But if there is no need for mipmapping (i.e. no SSR) these levels will be undefined.
So forcing all Post FX shader to sample level 0 fix this.
This add the possibility to use planar probe informations to create SSR.
This has 2 advantages:
- Tracing is less expensive since the hit is found much quicker.
- We have much less artifact due to missing information.
There is still area for improvement.
BKE_scene_copy explicitly ignores visibility of "source" collections make all
collections visible. This is also tested by regression tests.
While it seems more logical to simply preserve all possible visibility flags
and overrides, don't feel like submitting to a behavior-changes without talking
to author of those guards first.
This commit fixes cycles material preview.
If object is only listed in collection but not added to any of layers we shouldn't create
placeholder for it, because otherwise we'll leave lots of placeholder ID nodes.
Question: can we make this exception to be more reliable?
