Hi !Im trying to find ressources, tutorial, or explanation that touch the subject of stencil mask/buffer, , im planning to make a portal/rift with depth like something else is behind it, and after looking around i got told this was a technique that could work great, i sadly really cant understand the principle behind it or find a good tutorial that explain the principal?how to build that shader/effect ?I understand that a Plane i acting ask a transparent mask that then show only in that plane the thing masked to the rest of the scene, but aside that i really cant warp my head around how to actually make the whole system happen/function.Any help or good tutorial welcomed ! Sorry if that has been asked before !