>>373049641
one of these two maybe?

Animation Showcase［UDON］
https://en.vrcw.net/world/detail/wrld_ab4c71f4-507a-4ea7-8e71-76157e76e751
ShaderMotion Lab
https://en.vrcw.net/world/detail/wrld_695dbcd6-081a-4ca4-b00f-fc7938ec08ad