I’m currently writing a script to identify if any objects in the scene with a standard material that has a diffuse (or opacity map) that have the preMultAlpha switched set to on and if so report it (so I know what material was changed) and then switch it off. Simple enough, only I can’t seem to set the switches for preMultAlpha to off and I can’t get the opacity map part to work either. (Which is most of the script actually...ahem) Can anyone please help me out. Thank you.

From 3d Studio R4 through to 3ds Max 2008
Windows XP (SP3)
Pentium 4 CPU 2.8 GHz, 3.0 GB RAM
ATI Radeon X300 series, DX 9.0c
Coffee: Almost empty

This will disable the preMultAlpha switch for all bitmaps in the scene:

Personally I wouldn’t dig through the materials, I would use what I did and change the BitMapTexture Objects. Without seeing your code (and possibly a sample scene) it is going to be hard to pinpoint what the problem is.

-Eric

Eric Craft
“The Evil Monkey hiding in your closet.”

Look up “StandardMaterial - Material” in the Maxscript Help Index.

Max 4.2 through 2013.
XP-64 (SP2)
NVidia 9800GTX-512 (Driver 266.58).
Core 2 Quad Q6600 2.4GHz, 8Gb Ram, DX9.0c.