Thank you both. Really appreciate your help. Spent the days since your posts trying to get this to work and am close. Am pretty much brute-forcing it at this point so if you have any additional thoughts, would really appreciate it. I was able to successfully unwrap the UV to world space but can't figure out how to position the verts so they are correctly facing the camera/centered in the viewport -- especially when my object is rotated/translated. I've tried multiplying it by different transformation matrices to achieve a billboard and then center the resulting verts by adding each vert's position to the delta vector between the object's position and my desired position (arbitrarily placed in the center of the camera's viewport). Instead of unwrapping to world space, is there a correct approach to unwrap to screen/clip space -- or even to just convert from clip space to world space and back again? Thanks in advance! -- As an aside: would love some type of debug node to see the actual values being piped through the graph.