Resolved Looking for specific article about decals and dynamic painting

Hello, several months ago I saw an article ( pretty sure it wasnt a video) about an endoscopic surgery simulator on mobile. The useful thing is that it discussed the blood decal system in details ( using objects as "brushes", saving results into texture, procedural blood pooling and washing away). But now I cannot find it again. Could someone by any chance direct me to it?

 

Nevermind, remembered that it was GDC talk, not a blog post.