How do you paint vertex opacity in 3ds Max?

visionaryunlimited

How does one go about painting vertex opacity in Max?

I have fiddled with Vertex-paint modifier and cant seem to get it right. Tried setting the opacity slot in the material editor to vertex color but still no luck. Is it perhaps the view port shader?

Thanks in advance

Ark

Add a VertexPaint Modifier and switch to the Alpha tab.

Eric Chadwick

Yes, you need a FX shader to see vertex alpha as opacity in the viewport. You can make one fairly easily with Shader FX ... http://www.lumonix.net

Emericanized

Ark - Where should I find the alpha tab in the modifier? I have the Vertex Alpha channel radio button selected in the parameters rollout, but it doesn't seem to have an effect!
Thanks for your time

Ark

After you've added the VertexPaint modifier, on the VertexPaint menu that appears, under "Display Channel" untick the lock icon and click and hold on the box icon and Vertex Alpha is the third selection along.

Emericanized

ah, thanks so much! I've got it exported and displaying properly in Unity now (using it as a work around for the resource-hogging anti-aliasing). For some reason it didn't occur to me to paint it like a grey scale alpha map.

cptSwing

Should be able to forgo the Vertexpaint modifier (which is always horribly slow for me) and set Colors+Alpha in the Editable Poly rollout as well.