GPU Compute Shaders for Simulation of fluids, diffusion reaction etc.

This talk was given last friday (4.02.2022) at local polish LBM workshop in Kraków (LBM in Krakow 2022) organized at AGH. Here I present two tutorials on GPU Compute Shaders for Simulations of fluids, diffusion reaction etc. . Tutorials describe the Gray Scott reaction diffusion and fluid flows in 3D using the Lattice Boltzmann Method. I briefly introduce the concept of GPU, shaders, OpenFrameworks used as graphics API and then describe how to work with both tutorials.

Plan:
00:00 Intro
02:24 What is GPU?
04:13 Why Compute Shaders?
05:41 Intruduction to Open Frameworks
06:55 Tutorial 1 (Gray Scott) starts here
08:16 Starting Open Frameworks code
09:34 Gray-Scott model details
12:43 Buffer allocation on GPU
13:35 GPU buffer bindings explained with wires
14:58 Textures in OF
16:00 The Shader related code starts here (loading, linging, ping-pong, dispatch)
19:30 The Compute shader for Gray-Scott
24:09 The result Gray-Scott model (run live)
24:54 Gray-Scott with bumpmapping (run live)
26:15 The Lattice Boltzmann in 2D (run live)
27:06 Tutorial 2 on 3D fluids with Lattice Boltzmann starts here
28:00 3D LBM realtime (run live)
29:00 Surprise - 3D multiphase volumetric rendered CFD Wrocław #9 invitro with music from n1k-o

The tutorials with code can be found under these links:

1:   / gpu-compute-shaders-in-open-frameworks-tut...  
2:   / gpu-compute-shaders-part-2-fluids  
(1 copy on blogspot): https://maciejmatyka.blogspot.com/202...

The talk was originaly given for local polish workshop LBM in Kraków organized at AGH. Unfortunately the original sound was not recorded so this is repeated one but I bet is 90% the same. Remember for the futur, that Teams from MS overtakes the microphone and doesn't allow other software to use the input, which I didn't know.

Final invitro is recorded here in better quality:    • CFD Wrocław #9 Invitro  
#tutorial #computeshaders #openframeworks