Attribute Control Of Shaders / Vops

[mattd]

I have figured out how to get simple things like color and alpha primitive attributes to control a shader, since (most?) shaders will respect the Cd and Ca attributes and pipe them to the correct location. However, I would like to have either a custom attribute (or alpha) control which texture from a imagesequence to use. I am looking at the print VOP as perhaps a way to change out the map input of a texture VOP, but is there an easier way that I am missing? I also can't seem to get an expression to work in that VOP, so no padded zeros on the sequence?(not a big deal)

My use is different, but this would be part of a system for rendering dynamically animated sprites.

Is there any way for a VOP network to react to anything other than the attributes made available in the globals VOP?

I am also a bit confused about attribute names and the varios local attribute name acces. Is there a map or a secret understanding that I do not get? e.g. $ALPHA is Alpha is $CA

Thanks

MD

[Jason]

Hi Matt,

You can do this easily by adding your own Parameter VOP with a name matching the attribute name that is varing. You can find a good description here: VEXUsageTips

Cheers,

Jason

[mattd]

Very nice, I missed that one. I knew it had to be easy.

Thanks

MD

Hi Matt,

You can do this easily by adding your own Parameter VOP with a name matching the attribute name that is varing. You can find a good description here: VEXUsageTips

Cheers,

Jason