/CubeCollision

Primary LanguageC++

UE5 simulating 1000 particles free fall with compute shader

This project is a starting point using compute shaders to do physics simulation in UE5. It implements a 1000 particles collsion simulation in the GPU.

collision.mp4

Implementation details

1. simlation method

I use Discrete Element Method(DEM) to simulate particle collision.

2. Accleration method of neighborhood search

  • I'm using a hashed grid to accelerate the neighborhood search of particles.
  • Be sure that the particle size must be smaller than the grid size.
  • For detailed hashed algorithm, you can look into the refrence tutorial.

3. TODO

  • Use prefix sum to accelerate neighborhood search.
  • Use UInstanceStaticMeshComponent to speed up the rendering.

reference

1.DEM method of particle collision simulation