https://github.com/naeioi/pbf-cuda

Position Based Fluids CUDA implementation
https://github.com/naeioi/pbf-cuda

cuda fluid-solver opengl real-time simulation

Last synced: 4 days ago
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Position Based Fluids CUDA implementation

• Host: GitHub
• URL: https://github.com/naeioi/pbf-cuda
• Owner: naeioi
• Created: 2018-03-31T07:48:08.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2022-01-17T05:34:45.000Z (almost 3 years ago)
• Last Synced: 2023-11-07T18:56:35.693Z (about 1 year ago)
• Topics: cuda, fluid-solver, opengl, real-time, simulation
• Language: C++
• Homepage:
• Size: 192 MB
• Stars: 121
• Watchers: 7
• Forks: 16
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# PBF-CUDA

This project is an implementation of **Position Based Fluids[1]** written in CUDA and modified **Screen Space Fluids Rendering[2]**

written in OpenGL. 

## Gallery

**Double Dam Break 32K particles** 



See [figs](https://github.com/naeioi/PBF-CUDA/tree/master/figs) for additonal screenshots of single dam, surface normal map and sweeping boundary scene.

## Features

**Techniques**

- Imcompressible fluids simulation using Macklin[1]. Vorticity confinement is not implemented. 

- Screen space surface reconstruction based on Laan[2]. 

- Surface smoothed by applying bilateral filter on depth texture.

- GPU particle neighbor searching using Green[3].

- GUI using [NanoGUI](https://github.com/wjakob/nanogui). Talk with [wjakob](https://github.com/wjakob) last year inspired me for this project. 

**Evaluation** 

Performance evaluated on a notebook with GTX 1050, i7-7700 HQ.

Under configuration of 4 incompressibility confinement iterations and 2 smoothing iterations each frame, 

this implementation runs at ~30 fps with 32K particles in Double Dam Break scene (Screenshots above).

## Dependencies

- CUDA 9.1

- Visual Studio 2017 15.4.5. \

  Higher version fails to build CUDA 9, as of 15.7.3. \

  See [Microsoft vcpkg Github issue](https://github.com/Microsoft/vcpkg/issues/2814). 

- GPU and driver support OpenGL 4.5

## Licence

[Apache License 2.0 (Apache-2.0)](https://www.apache.org/licenses/LICENSE-2.0)

## References

[1] M. Macklin and M. Müller, “Position based fluids,” ACM Trans. Graph., vol. 32, no. 4, p. 1, Jul. 2013. \

[2] W. J. van der Laan, S. Green, and M. Sainz, “Screen space fluid rendering with curvature flow,” in Proceedings of the 2009 symposium on Interactive 3D graphics and games - I3D ’09, 2009, p. 91. \

[3] S. Green, “Particle Simulation using CUDA,” cse.uaa.alaska.edu, no. September, pp. 1–12, 2013. \

[4] [Learn OpenGL, extensive tutorial resource for learning Modern OpenGL](https://learnopengl.com/) for great skybox tutorial.