- Disable VertexPaint and WeightPaint for OB_MATERIAL and OB_RENDER. Users want to see the final result
- When in OB_SOLID, the active object should be rendered without any color. The lighting information is multiplied with the VertexPaint/WeightPaint color
- Removed the use_shading flag from VertexPaint and WeightPaint
- add method to check if render engine should draw without color (DRW_object_in_only_lighting_mode)
Reviewers: fclem
Tags: #code_quest
Maniphest Tasks: T54894
Differential Revision: https://developer.blender.org/D3191