Hello there. I'm kinda stuck on an issue, I want to create a "metaball" shader within the shader graph. (The metaball effect) I did successfuly get all the "particles" as a single texture : But now I'd like to make an outline. For that I probably need to write a custom node, but I tried my best all day and I really don't get how I can simply compare the neighbor pixels to see if there are or not next to a transparent pixel. Thanks for your help!