Experimenting with the new SDF nodes in Geometry Nodes. 30k particles colliding with a complex scene in realtime. The scene is baked into SDF grid. Blender 4.5 #blender #b3d #geometrynodes

Beautiful! Can you explain why SDF makes this simulation possible? Are mesh collisions just too slow to compute?

Thank you! Traditional mesh collisions have to loop every polygon in the scene and calculate for intersections for each particle. With SDF, you just need to sample the 3d grid once to get the distance to the closest geometry. (Or 4 times to calculate normal too).

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wow so nice, there's no intersecting going on? really smart!

I like what I see! 🤘

Jesus Christ XD

Oh wow 😍

cool

Wonderful example!

This looks absolutely stunning! The detail and interaction of particles make the scene feel so alive.

Oh my! I have to try this on my laptop!!