Artifacts with CoronaLightMtl

Corona Corona for 3ds Max Issues
1

Strange artifacts appear as black triangles on a self-luminous material with a grid bitmap or other contrast textures.

After many tests it turned out that they occur in the following cases:

-specific bitmap contrast in CoronaLightMtl (where black pixels RGB=0)
-many faces of geometry
-render view from afar

Test scene link (max 2014):
https://cloud.mail.ru/public/GfLJ/GwB2q6RhE

Artifacts_01.png
Artifacts_01.png796×598 115 KB

Artifacts_02.jpg
Artifacts_02.jpg794×597 90.8 KB

Artifacts_03.jpg
Artifacts_03.jpg1281×783 310 KB

Artifacts_04.jpg
Artifacts_04.jpg1281×783 312 KB

2

test

info_02.png
info_02.png1076×815 45.5 KB

info_03.jpg
info_03.jpg1865×957 285 KB

info_01.png
info_01.png1210×828 135 KB

3

I remember this was an issue some time ago but I thought it was fixed. Thanks for a detailed report. Ondrej will have to take a look at this.

4

Fixed in the newest daily.

5

Great!