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+--- Thread: Billboarding particle woes... (/thread-2026.html)
Billboarding particle woes... - Howard Day - 10-31-2020
Hi, all! I'm attempting to do some flipbook particle animation In VRay RTX mode, and I'm running into a couple issues I'm hoping to resolve.
The first is getting a normalized Particle Age that I can put in the Custom Properties to send to the material on the particles. I know I can normalize it to a specific frame length - but some of these particles live longer than others, and on those, the animation simply starts looping.
The second is getting that information to render in VRay - tyBitmap isn't a supported map, so it's completely ignored. I've tried to figure out some method of substituting an OSL-based solution to bypass this, but I've yet to find an OSL shader that can load a IFL file list. Does anyone know of a method to do this? ?
I'm also trying to figure out a way to scale particles based on distance to the camera. I thought I might get away with a displace + distance falloff map but apparently that doesn't really work.
Thanks for taking a look!