I am trying to add light to my scene and pretty much like the result of the daylight system but when the daylight system target a plane with alpha the polygons show as black. can anyone explain me a work around or what I do wrong?

thank you in advance.

With daylight system

With out

what material type are you using?

3ds Max Design 2010/11/12, 64bit, Boxx technologies, dual quad core 2.8, nvidia quadro 4000, 20GB Ram, use mental ray for rendering, windows XP pro 64bit

I had same kind of problems in the past using standard materials (with an opacity map) and MR renderer. I did replace these materials with Arch & Design with a stand alone alpha map in cutout slot and now it works perfectly.

amarhys

Max 2011, Win7-Pro 64.
NVidia GeForce GTX 460
Core i7 950 3.06Ghz, 24Gb Ram.

Arch and Design solved the problem, just alot more work because you cant use the material override and need to make a multi-sub mat but it work.

thx, if anyone as the technique of doing it in the vray plz let me know.
Also where do you put the specular map in arch and design? -.-