Blender Git Loki

Grid: Fix T51813: Opaque grid on OSX.

3D View: minor change to NDOF view orbit

This change is needed for 2.8, where the NULL check isn't a reliable way
of testing if dynamic offset is needed.

Fix restrict error in BLI_str_format_byte_unit

Don't use sprintf to append a string to it's self.

Also correct BLI_str_rstrip_float_zero's return value.

Merge branch 'hair_guides' into hair_guides_grooming

Merge branch 'blender2.8' into hair_guides

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'hair_guides' into hair_guides_grooming

Add an offset to ensure hair guide curves start on the scalp in export caches.

Properly set loop and poly indices in mesh samples where possible.

Use edit data so that hair is updated while editing groom objects.

Finish bounding box functions for groom objects.

Add groom object type to Eevee cache population check.

make.bat : Fix builtime.txt being written in the wrong folder.

Fix h value not being computed correctly.

The new code only works for thick curves, not ribbons, but should hopefully
work correctly for that case. If we already know the normal we don't need to
look at the curve geometry, which simplifies things.

Cycles: Add Support for IES files as textures for light strength

This patch adds support for IES files, a file format that is commonly used to store the directional intensity distribution of light sources.
The new IES node is supposed to be plugged into the Strength input of the Emission node of the lamp.

Since people generating IES files do not really seem to care about the standard, the parser is flexible enough to accept all test files I have tried.
Some common weirdnesses are distributing values over multiple lines that should go into one line, using commas instead of spaces as delimiters and adding various useless stuff at the end of the file.

The user interface of the node is similar to the script node, the user can either select an internal Text or load a file.
Internally, IES files are handled similar to Image textures: They are stored in slots by the LightManager and each unique IES is assigned to one slot.

The local coordinate system of the lamp is used, so that the direction of the light can be changed. For UI reasons, it's usually best to add an area light,
rotate it and then change its type, since especially the point light does not immediately show its local coordinate system in the viewport.

Reviewers: #cycles, dingto, sergey, brecht

Reviewed By: #cycles, dingto, brecht

Subscribers: OgDEV, crazyrobinhood, secundar, cardboard, pisuke, intrah, swerner, micah_denn, harvester, gottfried, disnel, campbellbarton, duarteframos, Lapineige, brecht, juicyfruit, dingto, marek, rickyblender, bliblubli, lockal, sergey

Differential Revision: https://developer.blender.org/D1543

Fix sd->dPdu normalization, renamed dPdCD to Y, increase assert epsilon.

Cleanup: use kernel_assert() instead of assert() in kernel.

Cleanup: keep BSDF local frame computation out of curve code.

Workbench: Shadow: Refine camera in shadow test.

Test if all nearplane points are not in front of the shadow BBox.

Pydoc: Fix multiple bpy.type modules