022e46a7e2
The GPv3 tint modifier will give incorrect result in fill tint due to two reasons: 1) The material index being wrong; 2) The default value for `fill_color` attribute needs to be explicitly assigned as `ColorGeometry4f(float4(0.0f))` to ensure correct color mixing and switching between fill/material color in the tint modifier. Pull Request: https://projects.blender.org/blender/blender/pulls/120249