Blender Git Loki

Fix: GPencil drawing sessions now respect limits for maximum undo steps

When drawing with Grease Pencil "continous drawing" for a long time
(i.e. basically, drawing a very large number of strokes), it could be
possible to cause lower-specced machines to run out of RAM and start
swapping. This was because there was no limit on the number of undo
states that the GP undo code was storing; since the undo states grow
exponentially on each stroke (i.e. each stroke results in another undo
state which contains all the existing strokes AND the newest stroke), this
could cause issues when taken to the extreme.

Code Cleanup: Deduplicate undo node freeing code

Fix T49273: Crash during access to dupli weights at launch time.

See commit's comments for details, but this boils down to: do not try to use
purely runtime cache data as a 'real' ID pointer in readcode, it's likely
doomed to fail in some cases, and is bad practice in any case!

Thix fix implies dupliweight's object will be invalid until first scene update
(i.e. first particles evaluation).

GPencil: New interpolate strokes operators

Two new modal operators to create a grease pencil interpolate drawing
for one frame or a complete sequence between two frames. For drawing
the temporary strokes in the viewport, two drawing handlers have been
added to manage 3D and 2D stuff.

Video: https://youtu.be/qxYwO5sSg5Y

The operator shortcuts are Ctrl+E and Ctrl+Shift+E. During the modal
operator, the interpolation can be adjusted using the mouse (moving
left/right) or the wheel mouse.

OpenSubdiv: Support multiple materials drawing in Cycles textured view

Consider for inclusion into 2.78.

Gawain: add immBeginAtMost

immBegin requires us to know how many vertices will be drawn. Most times this is fine, but sometimes it can be tricky. Do we make the effort to count everything in one pass, then draw it in a second?

immBeginAtMost makes this simple. Example: I'll draw at most 100 vertices. Supply only 6 verts and it draws only 6.

Any unused space is reclaimed and given to the next immBegin.

Add XK_ISO_Left_Tab to ghost's known X11 keydefines...

Gawain: fix GL_POINTS in immediate mode

Was using GL_NONE to mean "no primitive" but GL_NONE and GL_POINTS are both defined as 0x0000.

Introducing PRIM_NONE = 0xF which does not clash with any primitive types.

Cleanup previous commit...

GHOST X11 keyboard: Attempt to fix issues with modifier keys on some systems.

Could not reproduce it here, but since users having the issue claims it comes from
rB16cb9391634dcc50e, let's try to use again ugly `XLookupKeysym()` for those modifier keys too...

[cmake/cpack] allow override of package name

Cpack generates a standard filename with git information in it, which might not always be wanted for release builds, this patch adds an option to override that default filename.

Reviewers: sergey, juicyfruit

Reviewed By: juicyfruit

Differential Revision: https://developer.blender.org/D2199

ammended to fix: wrong variable name in main CMakeLists.txt

Revert "Depsgraph: Prioritize evaluation of the new scheduled nodes"

This reverts commit 9444cd56db1a4e43d03fa8c735cd893b2e74b913.

This commit caused some flickering in the bones when swapping IK to Fk.

While it's unclear why such change caused any regressions, let's revert
it to unlock the studio.

[cmake/cpack] allow override of package name

Cpack generates a standard filename with git information in it, which might not always be wanted for release builds, this patch adds an option to override that default filename.

Reviewers: sergey, juicyfruit

Reviewed By: juicyfruit

Differential Revision: https://developer.blender.org/D2199

Fix T41883: Strip keyframes not respected for scenes rendered by other scenes

Add script which scales splash screen down

Based on reading documentation around. This particular version
is based on the ImageMagic documentation which could be found
there:

http://www.imagemagick.org/Usage/filter/
http://www.imagemagick.org/Usage/filter/nicolas/

Current filter is based on measuring mean error with the current
splash screen and choosing combination of parameters which
gives minimal mean error.

cleanup: macro whitespace alignment

Gotta be careful mixing tabs & spaces. This commit uses 4-space indent
to align the line continuation markers.

Follow-up to 3b52c4056aaf

Fix cast shadows (material option) in the viewport

Fix cast shadows options (in material tab) not working in the viewport.
An off-by-one error. See D2194 for more.

Committing for Ulysse Martin (youle) who found & fixed this.

Fix T49252: Crash when image textures used with true displacement

UI: Ctrl+Tab and Ctrl+Shift+Tab to cycle through space context "tabs"

In User Preferences, Properties Editor and toolshelf, Ctrl+Tab and Ctrl+Shift+Tab now activates the next or previous space context (or category in case of toolshelf tabs), respectively.

For Properties Editor such functionality was completely missing, only toolshelf allowed cycling using ctrl+mousewheel (or only mousewheel while hovering tab region). Ctrl+Tab and Ctrl+Shift+Tab are common web browser shortcuts, so they're a reasonable choice to go with.
Reaching the first/last item doesn't cause the cycling to stop, we continue at the other end of the list then. (I didn't add this to Ctrl+Mousewheel toggling in toolshelf since I wanted to keep its behavior unchanged.)

We could get rid of (Ctrl+)Mousewheel cycling in toolshelf, but this may break user habits.

The cycling happens using a new operator, UI_OT_space_context_cycle, for toolshelf tabs it's hardcoded in panel handling code though.
Generalized rna_property_enum_step a bit and moved it to rna_access.c to allow external reuse.

Reviewed By: venomgfx
Differential Revision: https://developer.blender.org/D2189

OpenSubdiv: Fix missing ORCO when enabling OSD but having dependency to the geometry

Was causing huge viewport lags.

Reported by angavrilov in IRC, thanks!

Safe and nice for 2.78.