Blender Git Loki

Fix T51592: Simplify AO Cycles setting remains active while Simplify is disabled

DwM: optimize material access

- Split BMesh/Mesh loops.
- Loop over faces instead of tris.
- Add out-of-bounds check for material index (rare but can happen).

Cleanup: use more generic naming

Can be used by any user that needs faces split by materials.

DwM: texture paint support & mask mode

Uses workaround so material slots are used when neither blender-internal
or cycles are enabled.

Merge branch 'master' into blender2.8

Conflicts:
source/blender/blenloader/intern/versioning_270.c

Gawain: replace switch with lookup table

This function is not performance critical, but I prefer the branch-free code and no hack needed to appease gcc.

Follow-up to recent 23035cf46fb4dd6a0bf7e688b0f15128030c77d1 and f637145450010d14660fcb029d41560a138eae14.

Add PovRay syntax hilghting.

Since we already have a rather advanced PovRay exporter, makes sense to
also nicely display generated 'code'.

Patch by Maurice Raybaud (@mauriceraybaud), thanks!
Cleanup (mostly styling) by @mont29.

Reproject the point while drawing

If the point is not reprojected and the axis is locked, the thickness of the drawing stroke is different when the stroke is completed.

Reprojecting the stroke drawing buffer simulate the stroke thickness when it will be reprojected in 3D space and get better drawing feedback.

New function to reproject a point

This function will be used while drawing in draw manager gpencil engine

Cleanup: Rename function

Cleanup: extract reproject functions

fix for loading bakes from official build (single objects)

also reverted from exact volume calculation of shards to bbox (faster)
removed some development printouts

Fix T51308: Bright/Contrast Doesn't respect Pre-multiplied Alpha

Brightness/contrast node was changing color but did not modify alpha
or ensured colors are premultiplied on the output. This was giving
artifacts later on unless alpha was manually converted.

Compositor is supposed to work in premultiplied alpha (except of
some really corner cases) so it makes sense to ensure premultiplied
alpha after brightness/contrast node.

This is now done as an option enabled by default, so we:

(a) Keep compatibility with old files.
(b) Have correct behavior for newly created files.

Later on we can get rid of this option.

Fix T51318: Non-update of preview when switching from world to lamp panel.

Lamp preview panel is in DATA buttons context...

Enhance vgroup handling when merging meshes.

We were looping over all vgroups in destination mesh and making string
comparison, for every vgroup of every vertex of merged mesh! Crazy!

Now we simply create a temp mapping of vgroup indices, seriously
simplifies things (and gives significant speedup when merging huge meshes
with lots of vgroups, here with quick stupid test went from 120ms in
vgroup merging to less than 5ms, 25 times quicker!).

Fix T51520: Broken vertex weights after two mesh joining.

Root of the issue here was that two stupid modifiers could create named
vgroup CD layers (vgroup editing ones... shame on me :") ).

Fix that, and added some versionning code to also fix 'corrupted' blend
files created by those so far.

Fix wrong comment in BLI_findstringindex (returns 0-based index!).

Implement UBOs for particles

This fixes the issue where all particles were drawn with the colors and
size of the last psys to be drawn.

Minor cleanup of previous hair commits

Merge branch 'blender2.8' into greasepencil-object