Introduction

This is a GPU-based particle system, which enables the simulation of fluid, fire, and collision phenomena. The fluid simulation employs the Smoothed Particle Hydrodynamics (SPH) method [7], while the rendering of a 3D model is achieved through GPU Instancing using particles. For a visual representation, please visit this YouTube link https://www.youtube.com/watch?v=LmE4m8dSb48.

Techniques

• Computer Shader
• Shader Storage Buffer Object (SSBO)
• GPU Instancing
• Smoothed Particle Hydrodynamics(SPH)

Environment

This project is developed using C++(C++ 20), with a dependency on OpenGL 4.6. It utilizes the itugl package.

It can not run in MacOS because of the Compute Shader. Please goto the https://www.khronos.org/opengl/wiki/Compute_Shader to get more information about Compute Shader.

Execution Instructions

You can build this project using cmake. Follow the steps below:

1. Navigate to the source code directory.
2. Create a new directory named build.
3. Move into the build directory.
4. Execute the command cmake ...

REFERENCE

• Euler method. https://en.wikipedia.org/wiki/Euler_method.2021.
• Joey de Vries. LearnOpenGL: Instancing. https://learnopengl.com/Advanced-OpenGL/Instancing
• Khronos Group. OpenGL Wiki: Compute Shader. https://www.khronos.org/opengl/wiki/Compute_Shader
• Khronos Group. OpenGL Wiki: Shader Storage Buffer Object. https://www.khronos.org/opengl/wiki/Shader_Storage_Buffer_Object
• Matthias Müller, David Charypar, and Markus Gross. “Particle-Based Fluid Simulation for Interactive Applications”. In: Proceedings of the 2003 ACM SIGGRAPH/Eurographics Symposium on Computer Animation. SCA ’03. San Diego, California: Eurographics Association, 2003, pp. 154–159.ISBN:1581136595.
• Andrew Witkin and David Baraff. “Physically Based Modeling – Rigid Body Dynamics”. In: SIGGRAPH Courses. 2001.
• Yang Zeus. “Fire simulation by particles”. In: (2018).