Blender Git Loki

Cleanup: unused var

Recently added IES conflicts w/ EEVEE

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.

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

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

Workbench: Shadow: Refine camera in shadow test.

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

Workbench: Shadows: Add frustum check and camera occlusion test.

If the object is manifold and the camera is in the shadow side, we can
use the depth fail method to fix the inverted shadow glitch.

Unfortunately this does not really work for non-manifold.

Implementation details:
We try to be as efficient as we can, we precompute camera near plane
projected into 2D shadow space so we can test for intersection with the
shadow boundbox easily.

As the intersection test is done in 2D it's pretty fast.
Unfortunately, this means the shadow bounds are all aligned to the same
space and are not the smallest bound we could extract.

Armature: Fix warning.

DRW: Add new DRW_debug API.

This new API aim to provide simple function that can be called by the draw
engines during any phase of the draw pipeline. All calls are saved and
issued after all engines have finished rendering.

This removes the need of setuping special passes and shading groups for some
simple debug drawing.

Workbench: Codestyle

Workbench: Shadow: Add shader variant for manifold case.

Totally Manifold objects only require a single increment/decrement of the
stencil value. This result in less geometry generated and less overdraw.

Workbench: Shadow: Use depth fail method for manifold objects.

Since this method have no failure case for manifold objects, use it.

Threads: add spinlock hit for hyperthreading processors on Windows.

Suggested by Percy Ross Tiglao.

Armature: Make Custom bone have the same appearance as other bones.

I had to correct some errors in the winding order of the normal bones.

Armature: Fix missing bone edges in object mode.

Armature: Modify Shape outline shader to use Line adjacency instead of tri.

This is much faster and simpler. This is also to make it compatible with
custom bone shape in the future.

Cleanup: unused defines

Cleanup: unused defines