Blender Git Loki

Fix UI button text for Eevee "Use Nodes"

Freestyle is back for 2.8

It works with Cycles and Blender Internal for now.

The Blender Internal support will disappear, but we should be able to
integrate it with the Draw manager and use it with Clay, Eevee, ...

Install_deps: py 3.5.3, collada 22b1f4ff026881b4 (2.6.47), OCIO 6de971097c7f5.

Rename Iterator struct to BLI_Iterator

Draw Manager: Fix buffer reuse.

Use the correct depsgraph for freestyle

Freestyle itself is still not working, but that's to be addressed
separately.

Draw Manager: Fix instancing. Again.

GPUMaterial: Add support for tangent node.

Cycles: Fix crash loading single channel texture

Was typo in recent isfinite check.

Make sure external engines also render fine with depsgraph + freestyle wip

There is still a crash when using freestyle and Cycles,
but the changes here present are harmless

Correct own error using u32 for back-buffer select

Correct last commit

VERT_VISIT was used in a nested function.

Fix T51408: Cycles - Principled BSDF Shader - Transparency is not working as expected

Renamed the "Transparency" input of the Principled BSDF to
"Transmission" and "Refraction Roughness" to "Transmission Roughness".

Fix T51539: BMesh boolean crash

In some cases the vertex visit queue would exceed its max length,
visiting the same vertex multiple times.

DwM: Support flat-shaded w/ clay & eevee engines

Needed for sculpt mode drawing w/ engines, see: T51497

DwM: Armature: Cleanup envelope bone code a bit.

Mainly adding 'wire' suffix to wire/distance drawing func and shader.

Also, match wire vertex shader behavior with solid one regarding
head/tail only drawing (i.e. alwas expect head bone mat, never tail one,
and assume that if a radius is negative, then we only draw on the other
end of the bone).

DwM: Armature: add solid envelope bone drawing.

Envelope bones are now pretty much identical to old drawing code.

Note that currently new DwM drawing code does not seem to care about
wire/solid drawing modes at all, guess this is still TODO... For now we
hence just get both wire and solid for envelope bones, this can be
refined later.

DwM: Armature: refine drawing condition of envelope distance outline.

Should match better original 2.7x behavior now.

Separate zdepth to function to use in future

Now, the value is fixed but need to be calculated.

Re-use vertex position VBO in weight-paint mode