Blender Git Loki

Wireframe: Fix Artifacts with MSAA

We blit the depth buffer into the MSAA depth buffer so that wires are
properly occluded. This also makes the "In front" option work with MSAA.

GPU: Change multisample resolve shader to output min depth

This will effectively make the AA passes thicker in some cases but it is
required for better AA on wireframes. The trick is to occlude the wire
passes so that they do not output fragment that could be behind actual
geometry.

Wireframe: Add depth offset to prevent zfighting of wireframe overlay

Wireframe: Refactor to use GL_LINES instead of triangles with alpha blend

This gets rid of the progressive fading of the edges as it does not work
with depth perception (sorting problem with alpha blending).

Clamp value in sheen calculation to fix fireflies.

Fixes T59784.

Reviewers: fclem

Reviewed By: fclem

Subscribers: brecht

Maniphest Tasks: T59784

Differential Revision: https://developer.blender.org/D4269

Fix T61649: Transform resize from UV editor asserts

Change logic for error checking so it's easier to follow.

Markers: Make marker lines in sequencer and graph editor optional

- Makes it possible to show a vertical line for every marker in the graph editor.
- Makes the marker line visiblity optional in the sequencer and graph editor.

Request from @hjalti.

Reviewers: brecht

Differential Revision: https://developer.blender.org/D4348

Cleanup: remove unnecessary "_pad*" members

Cleanup: use "_pad" prefix for struct members

Cleanup: move 'orig' into Object_Runtime struct

Cleanup: remove 'orig' from ObTfmBack

This is runtime data and is re-evaluated before use.

DNA: rename Object.size -> scale

Resolves a common cause of confusion.

UI: motion paths panel layout tweak

- User better alignment for the paths_range_update button.
- Use Flow layout for the Display sub-panel items.

UI: armature properties layout tweaks

- Rename 'Draw Mode' to 'Display As', consistent with other properties.
- Use flow layout.

RNA: use distance units

UI: bake panel layout improvements

All the controls were just really thrown in there without any proper
organization.
This gives it more structure.

- Correct use of sub-panels to communicate hierarchy and sections.
- Use flow layout for toggles.
- Use consistent names for "Bake Type".

UI: improve light probe properties layout

Smaller adjustments to the Light Probe properties layout.

- Correctly use alignment for multi-property values.
- Correctly use sub-panels.
- Correctly use PROP_FACTOR for visibility_bleed_bias and
visibility_blur.

Fix T61187: Fluid Particle settings UI elements

Some properties were accidentally hidden for particle fluids.

- Made sure we show the Forces and Integration
sub-panels for particle fluids.
- Slightly re-ordered the sub-panels here, so that the same sub-panels
are at the top for Newtonian and Fluid particles.
- Separated the Fluid Interaction sub-panel so we can give it a unique
name.
- Removed lingering unnecessary 'Keys' label in the Keyed physics.

Cleanup: spelling

doxygen: update doxygen & add balembic group