Blender Git Loki

Eevee: Volumetrics: Add Volume object support.

This is quite basic as it only support boundbing boxes.
But the material can refine the volume shape in anyway the user like.

To overcome this limitation, a voxelisation should be done on the mesh (generating a SDF maybe?) and tested against every volumetric cell.

GPUMaterial: Add a domain property.

This let us know efficiently if a material has a dedicated nodetree for each of it's output node input.

Only works for Eevee at this moment.

Eevee: Volumetrics: Request aditional frames when no TAA is enabled.

Eevee: Volumetrics: Add volumetric support to alpha blended meshes.

Eevee: Overhaul the volumetric system.

The system now uses several 3D textures in order to decouple every steps of the volumetric rendering.

See https://www.ea.com/frostbite/news/physically-based-unified-volumetric-rendering-in-frostbite for more details.

On the technical side, instead of using a compute shader to populate the 3D textures we use layered rendering with a geometry shader to render 1 fullscreen triangle per 3D texture slice.

DRW: Add 3D texture support.

BLI_rand : add BLI_halton_3D

Refactor operator settings drawing to support operator-macros

Settings of operator-macros wouldn't be shown in the top-bar.

Workaround for 1 px button alignment issue

Needed to offset layout by one pixel to the right and top. Spent hours
debugging what causes this, without luck. For now a stupid workaround
should do it.

Corrections to screen-vertex placement

Showing Clay collection settings when clay is the workspace not the scene engine

Add more 'generic' way to select datablock to add as asset.

Faaarrrrr from UI/UX nice thing, but working for now...

Merge branch 'id_override_static' into asset-engine

Merge branch 'master' into id_override_static

Docs: clarify return value for BVH API

Hide transform widget when tool widget is used

Fix camera lens/ortho manipulator

Update issues remain, require listening to notifiers.

Merge branch 'master' into blender2.8

Fix T53131: Incorrect vert-edge angle calculation

Vertex w/ a single edge wasn't detected

Fix crash when trying to maximize area while hovering separator