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Use CTX_DATA_BEGIN_FOR_ID

Fix sculpt curve stroke paint

Merge branch 'master' into blender2.8

Fix cmake not triggering rebuild on .glsl changes

At least on windows we do not re-run datatoc when the .glsl files change.

To test is simple, just change edit_mesh_overlay_common_lib.glsl
remove lines, write plain text, ..., now rebuild and go in edit mode
with the default cube.

I also had to remove the entry in gpu/CMakeLists.txt for
gpu_shader_material.glsl since this was being tracked directly, as well
as running data_to_c_simple (otherwise CMake raises an error for
duplicated entries).

We probably want to do the same for the other datatoc functions.

Reviewers: LazyDodo, brecht
Differential Revision: https://developer.blender.org/D3803

Multi-Objects: POSE_OT_ik_add + POSE_OT_constraint_add_with_targets

You can now add the target from the non-active armature when they are
both in pose mode.

There were different ways of going about those operators:

* We could create one constraint on each active bone of each object.
That wouldn't follow what creating constraints from the UI does
though.

* We could change the selection/active order and create a constraint for
all the selected bones, to the active bone. However this would change
the design of changing only the active bone (which also is the one we
see in the buttons editor).

But in the end I think it makes more sense to let users set a constraint
from a charactor to a prop in a handy way.

This is pretty much what we had in 2.7x. There we would go for the
selected objects, if no selected bone was found in the active object.
In 2.8, however, we need this change to make things working as
before/intended.

Optimization: Edit Mesh Overlay: Avoid computing fixvec unnecessarily.

This brings a big difference to meshes with edit cage adjusted for modifiers.
In my tests, the suzanne with subdivision modifier level 3 went from 4.80ms to 3.05ms.

Multi-Objects: POSE_OT_constraints_copy (refactor)

This was already supporting multiple objects, but I changed it to use the API
we are using elsewhere.

Multi-Objects: POSE_OT_constraints_clear

Multi-Objects: POSE_OT_ik_clear

Fix armature bones spline ik lines offset

Fix armature bones ik lines offset

Edit Mesh Overlay Geometry Shader: Ignore correction geometry for loops that are not part of an edge.

By the tests I could only observe a considerable difference in the peformanse when the vertex size is 30.
Vertice 3 showed no difference in a suzzane with subdivision modifier level 3 + show-on-cage.

Point Size 30: 7.29ms vs 2.55ms

Reviewers: fclem

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D3805

DRW: Fix assert with BoundBox object display mode

Fix cmake not triggering rebuild on .glsl changes

At least on windows we do not re-run datatoc when the .glsl files change.

To test is simple, just change edit_mesh_overlay_common_lib.glsl
remove lines, write plain text, ..., now rebuild and go in edit mode
with the default cube.

I also had to remove the entry in gpu/CMakeLists.txt for
gpu_shader_material.glsl since this was being tracked directly, as well
as running data_to_c_simple (otherwise CMake raises an error for
duplicated entries).

We probably want to do the same for the other datatoc functions.

Reviewers: LazyDodo, brecht
Differential Revision: https://developer.blender.org/D3803

UI: fix misaligned underline for menu item shortcut keys.

UI: tweak icon spacing in menus to put them in the middle of the edge and text.

UI: icon set updates Andrzej Ambroz.

This adds and changes various icons, in particular modifier and force field
icons are now included.

Fix T56250: brush cycling with shortcuts is broken.

It was cycling both in the brush system and tool system which conflicted.
Now it uses just the tool system. This is more of a temporary fix until
the new tool/brush decoupled design is in place.

node_shader_utils: fix bad setting of use_nodes in readonly case.

Also added access to extension property in texture wrapper.

Dope Sheet: unify comparison threshold for the ActKeyColumn tree.

Use the same floating point precision threshold to merge keys
when building the tree as when searching it.