This is in preparation of upgrading our library dependencies, some of which
need C++11. We already use C++11 in blender2.8 and for Windows and macOS, so
this just affects Linux.
On many distributions this will not require any changes, on some
install_deps.sh will need to be run again to rebuild libraries.
Differential Revision: https://developer.blender.org/D3568
Hopefully this will fix issue with camera rig where camera properties
(like, near/far clip) are driven by custom properties from bones, and
those bones are actually belong to proxied armature.
`BKE_pose_rebuild()` should (ideally) always trigger a rebuild of the
depsgraph, since it can add or remove posechannels.
This function now takes a Main parameter to ensure that related
depsgraphes are tagged as dirty (kept it optional, for some corner cases).
We should also probably double-check calls to that function, think in
theory it should only be called from depsgraph itself? But for now...
This separate probe rendering from viewport rendering, making possible to
run the baking in another thread (non blocking and faster).
The baked lighting is saved in the blend file. Nothing needs to be
recomputed on load.
There is a few missing bits / bugs:
- Cache cannot be saved to disk as a separate file, it is saved in the DNA
for now making file larger and memory usage higher.
- Auto update only cubemaps does update the grids (bug).
- Probes cannot be updated individually (considered as dynamic).
- Light Cache cannot be (re)generated during render.
Old behavior: tagging ID with DEG_TAG_COPY_ON_WRITE will do copy-on-write
(as requested), but will also flush changes to all operations with depends
on it. This means, for example, tagging object for copy-on-write will force
its modifier stack to be evaluated.
This was needed in the earlier days of copy-on-write when things were not
well defined and when lots of areas were not doing proper tagging.
New behavior: tagging ID with DEG_TAG_COPY_ON_WRITE will only ensure copy
of the dadatblock is up to date, without flushing updates to any dependencies.
This means following things:
- We can update parts of ID without invoking heavy computation of other
parts of same ID. For example, tagging object for COPY_ON_WRITE update
on mode change will not force modifiers stack to update.
- If some dependent datablock is dependent on pointers which are invalidated
by copy-on-write (like, evaluated mesh referencing custom data layers from
original mesh), this will either require explicit tag or explicit relation
in the dependency graph.
Currently can not find a faulty case since tagging of mesh happens with
either 0 (which means, everything) or with GEOMETRY, which also forces
all dependent modifier stacks to be re-evaluated.
This fixes missing PBVH when going into sculpt mode (sculpt mode toggle
was tagging object for COPY_ON_WRITE update, which was forcing modifier
stack to be updated, which was freeing PBVH.
Some other operations might also become faster with this change.
Shading is supposed to be dealing with draw manager batch cached
thingamajigs, but was causing full object update.
This was causing both flickering in sculpt mode (PBVH was removed,
why it was SOMETIMES restored before draw is a mystery), and was
also causing things to be really slow.
This way we guarantee that animation component on the datablock will
totally wait for action to be fully evaluated before attempting to
evaluate f-curves.
Fixes T55642: Inconsistent result on animated DoF file
To find all effectors in the scene, we need to loop over all objects.
Doing this during depsgraph evaluation caused crashes because not all
objects are guaranteed to be evaluated yet.
To fix this, we now cache the relations as part of the dependency graph
build. As a bonus this also makes evaluation faster for big scenes,
since looping over all objects for each particle system is slow.
Fixes T55156.
Transform evaluation does depend on that matrix, but relation was never
in dependency graph. It was not even in the old dependency graph, which
makes me wonder how this thing worked reliably to begin with.
Should fix flickering issue in the render farm.
Transform evaluation doesn't not depend on objects which are being duplicated,
so should not be any regressions here.
The whole relation should probably be gone as it's kind of rooting back to
legacy times, but that would need more clear research and investigation and
regression testing.
Note this is now separate from H key hiding, and meant for more persistent
ways to define which objects are relevant to the viewport or render.
This avoids some cases where you'd have to create collection specifically
to hide objects for viewport/render.
Currently done for mesh batch cache update, and for base flags sync.
Those components do not need anything from original object, and hence
can skip CoW tag and have faster update after them used.
Completely ignore animation for legacy zero update tag.
If one needs animation to be evaluated, tag with proper update tag, stop relying
on direct assignment of adt->>recalc with zero update tag for DEG.
This commit might cause missing updates when needed, those needs to be looked
into once they happen.
