Hi! The idea behind this tutorial is somewhat similar to my older particles on 3D SDF, but instead of mathematically describing 3D geometry with sign distance function, here we using difference in brightness of 2D texture to calculate particle velocities.
Hi there, I've made a new example how to build a particle system using a compute shader in TouchDesigner. This one is based on instancing and uses a heightmap for the particle to collide with. I tried to explain everything as much as possible using little textDATs docked to most components.