Blender Git Loki

Merge branch 'master' into soc-2020-fluid-tools

Cleanup: Minor refactoring and naming updates

Merge branch 'master' into property-search-ui-v2

Renamed draw/engines/editors to draw/engines/image

Fix typo: missing `f` string prefix in Alembic export test

Initial commit for image unavailable texture

Fix last commit

Cleanup: Alembic tests, add note explaining how the export tests work

No functional changes.

Cleanup: rename `alembic_tests.py` to `alembic_tests_export.py`

Rename `alembic_tests.py` to `alembic_tests_export.py`, as this makes it
clearer what is being tested.

No functional changes.

Tests: Better error reporting in `AbstractAlembicTest`

Instead of checking for the length of a list, just handle the error that
occurs when the length is incorrect.

No functional changes to any actual test.

Fix formatting bug in `AbstractAlembicTest` class

Replace `formatstring, value` with the correct `formatstring % value`.

No functional changes to any actual tests.

InfoEditor: add log type to default log format

Cleanup: remove unused includes and format files

InfoEditor: add autoscroll

UI: Only draw node menu search if categories exist

Currently, the search operator in the node add menu NODE_MT_add is drawn
even if no node categories exists. This patch only draws the operator if
at least one node category passes the poll.

This patch is needed because some add-ons use custom search operator and
do not register node categories. In this case, it is undesirable to have
a search operator drawn that do nothing and is not used. One such add-on
is Animation Nodes.

Reviewed By: Jacques Lucke

Differential Revision: https://developer.blender.org/D8576

Cleanup: Change BLI_bitmap for BLI_edgeset for internal springs

The BLI_bitmap had the potential to eat a lot of memory as it was a
dense map between all the vertices in the mesh.

Now we instead use BLI_edgeset so that we only store data when needed
(creating a spare map instead of a dense).

Fix T77340: nested nodes alpha issues

Reviewers: Severin

Differential Revision: https://developer.blender.org/D8573

Silenced warning in draw_view.c

UV Line drawing: better screen space perp

Export vertex normals if smooth shading is enabled.

`s on/off` line will not be written if that is not checked in the
exporter parameters.