Blender Git Loki

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.

Re-use vertex position VBO in weight-paint mode

Cleanup: simplify material checks w/ clay engine

Instead of manipulating args when checking for duplicates,
just convert the material and memcmp.

Cleanup: use pre-defined STRINGIFY macro

Fix T51538: Weight-paint circle select w/ clipping

Draw Manager: Fix instancing.

Eevee: fix orco.

Eevee: Refactor shaders defines

Eevee: fix bug with postprocess buffer sharing.

Eevee: Some changes to default shader.

Use old BI material prop and use a metallic approach.

Silence warnings in Mac (based on buildbot build report)

Fix blenderplayer