Blender Git Loki

GPencil: Exchange default colors for Tint and Draw

GPencil: Reduce Palette popover width

GPencil: Move default palette code to BKE

GPencil: Move variables in struct

Also this solves some alignment errors

Merge branch 'blender-v2.81-release'

Fix T71123: OptiX error in Cycles viewport when adding HDRI

Cycles did not update the "is_enabled" flag on lights when they were synchronized again, which caused all lights disabled by "LightManager::disable_ineffective_light" to be disabled indefinitely. As a result the OptiX kernels were not reloaded with correct features when a change to a light was made. This fixes that by updating the "is_enabled" flag during synchronization.

Differential Revision: https://developer.blender.org/D6141

GPencil: Cleanup

Merge branch 'master' into greasepencil-object

GPencil: Add a default Palette

GPencil: Apply Vertex Color to Fill areas

Overlay Engine: Add Edit Mesh

GPencil: Use Vertex Color for Fill areas in Draw tools

GPencil: Initialize Weight Paint data

GPencil: Replace default Red by Violet color

GPencil: Use Icon like Dyntopo for Vertex Color

GPencil: Change default Tint and Vertex Color

LANPR: Compiler switch for space_api folder.

LANPR: More clear statement of the endpoint value in chain drawing code.

LANPR: Remove redundant libaddr code in readfile.c

Fix T71250: ID user decrement error with ID properties in ViewLayer

Credit for the original patch goes to @scorpion81.