Blender Git Loki

Fix T48595: UI glitch with driver menu re-opening

Holding Ctrl-D would keep opening driver menus.

Bevel segments also changeable with mouse (S toggle).

Also, can use numeric input to set segments and profile when
in those respective value-adjusting modes (as per S or P toggle).
Finally, fixed problem with previous bevel commit: when changing
value-adjusting mode, would like to start off resumed value adjustment
where it was before.

Keymap: include 'Dopesheet Generic'

Fix misleading indentation in ImBuf

Fix typo in variable name as well.

Fix own error w/ undefined behavior

This happened to work for me but caused issues on OSX.

Cycles: fixed a typo that would crash shaders that use the "Is Diffuse Ray" output of the LightPath node

Merge branch 'master' into blender2.8

Fix glShadeModel being left flat in edit-mode draw

Cycles: Fix unhandled enumerator in OSL switch

Unsigned int is not supported by OSL as far as i concerned, so should not
really matter here. However, might be wrong and perhaps more proper idea
would be so set it as regular int?

Fix T48616: Auto-merge selects extra edges

Auto-merge caused all edges between selected vertices to be selected.
This only makes sense in vertex-select-mode.

Correct edge-flag merging code, which now merges flags from multiple edges.

Fix build error with GCC 6.1.

Fix Cycles debug build assert on some platforms, tighten checks to avoid this in the future.

Fix T48604: Crash on undo due to bad drawing code.

Short story: draw_lamp would add itself to delayed transp drawing list from 'xray' drawing step.
This was broken, since delayed transp drawing list is always handled **before** delayed xray one.

After undo it lead to segfault crash, v3d->afterdraw_transp still having reference to old freed scene's base.

Also added asserts that those afterdraw list are empty at end of drawing step, should help
avoiding that kind of issue in future.

Curve Fitting: offset based fallback to calculate cubics

Add a new fallback method that uses offset distance from the curve to the line between both points,
for freehand drawing it typically only fives minor improvements (1-3% fewer points),
for curve dissolve the improvements are more noticeable.

BLI_math: cleanup arg names

project functions arg naming made it hard to tell which vector was projected onto.

bmesh py api: expose BM_face_calc_tangent_*

D1988 by @wisaac, with own edits and improvements.

This improves on existing tangent calculation functions too.

- BM_face_calc_tangent_auto: Chooses method based on number of sides, used by manipulator (not exposed to Python).
- BM_face_calc_tangent_edge: from longest edge.
- BM_face_calc_tangent_edge_pair: from longest edge-pair (most useful with quads).
- BM_face_calc_tangent_edge_diagonal: edge farthest from any vertex.
- BM_face_calc_tangent_vert_diagonal: vert farthest from any vertex.

Also optimize BM_vert_tri_calc_tangent_edge* functions to avoid sqrt.

Docs: Support out-of-source reference-API builds

This was originally supported, however relative links to examples & templates made it fail.
Now files in the source tree are copied to the build-dir, with ".." replaced with "__"
to avoid having to mirror Blender's source-layout in the Sphinx build-dir.

Also skip uploading the built docs when an SSH user-name isn't passed to sphinx_doc_gen.sh
instead of aborting (so people w/o SSH access to our servers can use the shell-script).

Cleanup: API docs (whitespace/line length)

Cleanup, remove unneeded variable.