Blender Git Loki

Buildbot: Fix typo

Buildbot: Initial work to move linux build environment to CMake

This is so called "seems to work in dry tests" commit which is aimed to switch
linux release environment to CMake.

Some notes:

- There's no special handle of libstdc++, but it wasn't really static for quite
some time in SCons configuration and nobody really complained.

- It was quite tricky to get OpenMP linked statically with just using some
configuration so we went ahead and added a special option to CMake now which is
only exist on Linux and advertised as shouldn't be used.

- Packing is happening manually in slave_pack.py. This is because we have to add
some really special files to the archive (mesa libraries for example) which we
can't really handle from CMake/CPack in a nice generic way.

Don't think it's bad approach, at least crappynness is localized and it's not
_that_ crappy anyway.

- Windows buildbot should keep working, but needs doublechecing. It's just a
build folder changed, but you never know what it might imply.

- Some further tweaks are likely needed to ensure all builders are working.

Thanks Campbell for assistance in this patch!

CMake: Enable Cycles OSL for the full blender configuration

Cycles: Avoid recursion when doing constant fold

This reduces stress on the the stack memory which could be really handy
on certain operation systems which applies strict limits on the stack.

Reviewers: brecht, juicyfruit, dingto

Reviewed By: brecht, juicyfruit, dingto

Differential Revision: https://developer.blender.org/D1656

Cycles: Fix SSS object not properly reflected in glossy object with indirect clamping

This fixes remained issues reported in T46908.

Fix T46815: Changing playback setting makes blender crash

Copied the fix from upstream audaspace.

Cleanup: ignore unused args in stubs

Using term 'origin' for mathutils.bvhtree docs

Matches rna ray-cast API

Update template for changes in ray-cast

PyAPI: Change ray_cast to fix & improve behavior

- It wasn't possible to know when Object.ray_cast was successful
in the case when it hit a face with no original index.
- Take (ray_start, ray_direction) vectors.
- Take an optional distance argument.
- Scene/Object.ray_cast now use matching arguments & return values.

See D1650 (own patch)

Transform Snap: add optional face index arg

Cleanup: transform snap arguments

This was getting very hard to follow,

- mixing input/output args.
- mixing arg order between functions.
- arg names (mode, snap_mode) rename to (snap_to, snap_select)

Cleanup: double-conversion warnings

Cleanup: warnings & spelling

Fix T46909: Text strip not themeable

Normally we don't allow adding new theme options if we can avoid it, but this is a legit exception since all other strips are themeable.

Default color for text strip is now yellow-ish. Not nice but there are also not many other colors left.

Cycles: Fix wrong SSS intersection refinement when this option is disabled

The code is disabled by default, but we'd better keep it all correct.

Cycles: Fix wrong SSS on scaled instanced objects

Was a mistake on searching refined position form ray and hit distance.

Remember kids: SSS distance is in the object space!

Cycles: Remove TODO, it is possible there'll be more intersections recorded

It's just only few of them will be stored in the intersection array, nothing
wrong with that what's so ever.

Cleanup: Remove some more code for BVH cache. I missed that somehow.

Comment assert in id_us_min, currently we can get zero user count at this point.