Blender Git Loki

Blender world value viewport update

This patch will update the 3D viewport if a word value has changed.

This patch does not depends on an other patch, but should applied after https://developer.blender.org/D151 otherwise the the word value viewport update is be slow.

Reviewers: brecht

Reviewed By: brecht

Subscribers: thelasthope, darkxiv

Differential Revision: https://developer.blender.org/D159