Blender Git Loki

Color management: When look is applied, we can not consider spaces to match

This should fix T52812 after merge to blender2.8.

Correct error in cage2d draw style enum

Merge remote-tracking branch 'origin/master' into blender2.8

Fix T52800: fix UI flickering with Mesa on Linux.

Use triple buffer by default now on all platforms, remaing ones where:
* Mesa: seems to have been working well for a long time now, and not using
it gives issues with the latest Mesa 17.2.0.
* Windows software OpenGL: no longer supported since OpenGL 2.1 requirement
was introduced.
* OS X with thousands of colors: this option was removed in OS X 10.6, and
that's our minimum requirement.

Merge branch 'master' into blender2.8

Fix Cycles adaptive compile without volumes broken after recent changes.

Differential Revision: https://developer.blender.org/D2847

Fix T52801: reload scripts causes Cycles viewport render crash.

Fix T52432: Blender crashes while using Ghost (new depsgraph)

Math Lib: add divide_floor_i

Integer division that floors on negative output (like Python's).

BMesh: move bridge tools stepping logic into macro

Also use floor division since regular division was giving a bias
on negative error values.

Cleanup: SGI format, remove unused struct members

UI: avoid int cast before clamping number input

Values outside int range would overflow.

Cleanup: SGI format, use uint/short/char types

Cleanup: SGI format, avoid overflow

Harmless but causes warnings

Fix SGI foramt reader CVE-2017-2901

Integer Overflow Code Execution Vulnerability.

Reader no longer crashes on corrupt images (from own fuzz testing).

Cycles: Fix compilation error with OpenCL split kernel

Fix T51074: Boolean modifier inverts operation

Support for negative scaled objects.

Fix writing Iris images w/ invalid header

Regression in e142ae77cadf

DRW: Fix Ubo binding logic and improve Texture binding logic

Ubo needs to be rebound every times the shader changes.
This simplify the logic a bit.

Also modify texture binding logic to potentially reuse more already bound textures.

Fix T52384: Bridge pair result depends on other loops

When 2x loops have different number of vertices,
the distribution for vertices fan-fill depended on the loop order
and was often lop-sided.

This caused noticeable inconstancies depending on the input
since edge-loops are flipped to match each others winding order.