I did a faithful recreation of Portal's portals as a Blender shader! : r/ Portal
Andrea Del Zoppo - ZoppoSimone on Twitter: "more procedural portal made in Blender 3d #procedural #blender #blender3d #graphicdesign #design https://t.co/hm63beD9Xw" / Twitter
How to do portal in blender? - Works in Progress - Blender Artists Community
Procedural portal shader in Blender - TUTORIAL - YouTube
Ancient Portal Tutorial by Roman Klčo on Dribbble
Dark Portal Blender 2.8 Tutorial by Roman Klčo on Dribbble