Blender Git Loki

Create multisample buffer for render

As render does not create default buffers by default, the render needs to create multisample default buffer in order to use antialiasing.

Fix render artifacts

When 3D object was in front there was some noise.

Fix render error when previous result is NULL

Fix error when sky is transparent

If the sky is transprarent the zdepth value is not valid to check, so it's better don't copy the pixels.

Interpolate render result for transparent colors

There is still some problems with AA.

Cleanup: Rename variables

Check exist grease pencil objects before render

If the scene has not grease pencil objects, it's not required to call grease pencil rendr functions.

Missed in previous commit

WIP: Render mixing GP and Eevee or Cycles

Still there are problems with AA, but now it's possible to get a composed result with Cycle/Eevee and Grease Pencil.

Temp fix for object mode

The function ED_object_base_activate() was calling again the mode set and undo the mode change.

Do we need this function? Really the object is already the active one.

Fix infinite loop in mode set

The mode set entered in an infinite loop

Fix compiler error after merge

Fix on previous commit to use active_object

Need to use active_object, not object

Fix python object mode changes

After last changes, need to use workspace mode

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/blenkernel/intern/paint.c

Merge branch 'blender2.8' into greasepencil-object

Cleanup: Rename function to keep render grouped

Keep all render functions name with _render prefix.

More compile Fixes for object->mode refactor

TODO: I've come across some rather fishy-looking code in a few places
that will need more careful review later

* gpencil-select.c - 1181
* object_edit.c - 1596
* view3d_select.c - 1626
* undo.c - 230

Cleanup: Rename variables

WIP: Initial commit to use zdepth render data

Still not tested (branch is broken), but this commit is to keep log of the changes.