Fabazo
I'm also trying to get the whole triplanar thing to work on my end. And through reading everything above I can replicate everything except for properly rotating each side of the triplanar individually.

I inserted a mtlxrotate3d node and rotated the X-axis 90 degrees, which does work for the X-axis's side, but for the rest of the sides my texture just becomes warped (see image).

Am i inserting the mtlxrotate3d node in the right place or what's going on? I basically want my texture to be rotated so that all sides display the grunge flowing in the same direction. I also tried splitting the "vectors" individually and tried to scale them through that, but no luck there.

eikonoklastes
Any geometry that goes into Solaris is necessarily a USD, so anything that you're generating/importing that is not in a USD format will be converted.

If you're using SOP Create / SOP Import, Houdini is doing a live conversion to USD on-the-fly, so you'll get that overhead. Once your changes are locked in, you'd ideally want to write them to USD, for better performance in Solaris.

Apart from that, everything should work - not sure why your export did not - maybe post your settings/scene.

toadstorm
Sure, this can be done pretty easily. I'm attaching an example file for you. The quick way to convert objects to packed primitives here is to use MOPs Convert, but you can also do it manually if you'd like via Connectivity, Pack, and a couple other nodes. I'm demonstrating both methods. Once everything's packed, I'm just setting up pivot points for animation and then animating a falloff to un-shrink each piece in Y over time. Let me know if you have any questions!

toadstorm
I'm not entirely sure what you're trying to do here, but any packed primitives generated or modified by MOPs are just plain packed primitives. Anything that works on points or packed primitives will work with MOPs. If you're stuck on something specific, feel free to ask here or email me at mail@motionoperators.com.