Blender Git Loki

readfile: Move ID refcounting to libquery.

Having that extra ID users handling at readfile level, besides generic
one ensured by libquery, has been something bothering me for a long time
(had to fix my share of bugs due to mismatches between those two areas).

Further more, work on undo speedup will require even more complex ID
refcount management if we want to keep it in readfile.c area.

So idea is instead to generalize what we did for linked data already
when undoing: recompute properly usercount numbers after liblink step,
for all IDs.

Note that extra time required here is neglectable in a whole .blend file
reading (few extra milliseconds when loading a full production scene
e.g.).

Notes:
* Some deprecated data (IPOs) are not refcounted at all anymore, this
should not be an issue in pratice since the are supposed to get deleted
after doversion anyway.
* Refcounting happens after `do_versions_after_linking`, i.e those
functions won't get valid ID usercounts currently. Again, this is not a
problem in current code, if needed we could recompute refcount before,
and then ensure `do_versions_after_linoiing()` actually handles properly
usercount, which it does not currently.

Differential Revision: https://developer.blender.org/D6881

Fix T68878: Update shapekeys during transformation

Only use the hack in `key_block_get_data` for the bmesh shapekey.
The remaining shapekeys can use the original offset values.

Differential Revision: https://developer.blender.org/D6516

Fix T73941: Custom normals from normal edit modifier ignored by further modifiers.

This commit actually fixes several issues in this modifier, but main one
from the report was caused by adding a `CD_NORMAL` layer to loops to
store temp real clnors. Unless we plan on modifying the topology itself,
this is useless, and would require some additional 'dirty normals'
tagging to work properly, so just switched to simpler, cleaner solution
of having a local array of computed clnors.

Fix T73938: Cycles Vertex Color wrong if no layer is specified

The node would render black in this case (but should use the
'active_render' layer choosen in the object data properties -- this is
now in line to how this is handled for e.g. UVs)

This introduces ATTR_STD_VERTEX_COLOR and uses this thoughout, if no
particular layer is specified in the node.

Maniphest Tasks: T73938

Differential Revision: https://developer.blender.org/D6887

Subdiv: Clarify Subdiv settings

The actual naming might also be a subject to change, especially the one
around `level`. Tricky part here is that at some point in the API there
will be change from Blender modifier's Quality to OpenSubdiv's Level,
but which API level is most suitable for this?

At least now meaning of settings is better documented ans should be
clear what's going on.

Fix make deps OSL build on some systems with Qt libraries

Fix T73859: Support executing sculpt.set_pivot_position without invoke

Reviewers: brecht

Cleanup: assign Main, use existing assignments

Avoid accessing inline since it's often used multiple times.

In some cases it was already defined.

BLI_math: unify zero area checks for barycentric weight calculation

This applies the change from T73348 fix to related functions.

Instead of checking against an epsilon to avoid divide by zero,
perform the division and check the result is finite.

This is needed since small faces can have an area under 'FLT_EPSILON',
and dividing by values close to zero can result in 'inf'.

EEVEE: Color Ramp Ease Optimisation

This patch provides an optimisation for Ease (Smoothstep) setting in the color ramp node.
This optimisation exists already for Constant and Linear modes.

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D6880

DRW: New High Quality Normal & Tangent extract

This patch adds a dedicated path to extract 16bit normals instead of packing them into 10bits/comp.
The tangents are also packed to 10bits/comp if not using the new High Quality Normal option.

Fix T61024 Degraded texture shading on dense meshes

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D6614

GPU: Fix huge performance regression regarding instancing

Under some circumstances, MultiDrawIndirect was disabled to improve perf.
of average scene. But this conflicted with the normal instancing buffer
filling if only 1 or 2 instances were needed to fill the buffer. All
consecutive drawcalls could not be batched together and performance would
degrade rapidly.

This patch make my instance test scene go from 11fps back to 40fps where
it should have been.

GPU: Limit Mesa workaround to older version

Modifiers: UVWarp modifier add invert vgroup option

Adds the invert vgroup option to the UVWarp modifier. Adds a flag and char padding to the DNA.

Differential Revision: https://developer.blender.org/D6841

Modifiers: Bevel modifier add invert vgroup option

Adds the invert vgroup option to the Bevel modifier.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D6845

Fix crash loading .blend file saved with Blender 2.25

pathJumper.blend from 2.25 release demo files in demos225.zip

Modifiers: Explode modifier add invert vgroup option

Adds the invert vgroup option to the Explode modifier.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D6844

Fix Cycles fluid motion blur not working after recent refactor

This also re-enables the fluid motion blur test.

Sculpt: Update red cursor color

Some users reported that the previous red color of the cursor was too
saturated and that can be distracting.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D6828

Modifiers: Laplacian Deform modifier add invert vgroup option

Adds the invert vgroup option to the Laplacian Deform modifier.

Differential Revision: https://developer.blender.org/D6843