https://github.com/arceryz/raylib-gpu-particles

Raylib 100% GPU particles example in 3D. Uses compute shaders and is fully documented. Millions of particles at 60 fps on a laptop.
https://github.com/arceryz/raylib-gpu-particles

c compute-shader example glsl gpu gpu-acceleration gui lorenz-attractor raygui raylib raylib-examples tutorial

Last synced: 2 months ago
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Raylib 100% GPU particles example in 3D. Uses compute shaders and is fully documented. Millions of particles at 60 fps on a laptop.

• Host: GitHub
• URL: https://github.com/arceryz/raylib-gpu-particles
• Owner: arceryz
• License: mit
• Created: 2024-04-09T18:19:21.000Z (10 months ago)
• Default Branch: master
• Last Pushed: 2024-06-08T09:55:45.000Z (8 months ago)
• Last Synced: 2024-06-08T10:55:54.372Z (8 months ago)
• Topics: c, compute-shader, example, glsl, gpu, gpu-acceleration, gui, lorenz-attractor, raygui, raylib, raylib-examples, tutorial
• Language: C
• Homepage:
• Size: 23.4 MB
• Stars: 40
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Raylib GPU Particles



**This example creates a 3D particle system fully on the GPU**.

On a simple laptop (MSI Katana) you can draw 2 million particles per frame at 60 fps. The particles are rendered as triangles with direction and magnitude.

The code is **Highly** documented, you will absolutely understand! It uses Raylib, rlgl (lower level Raylib) and Raygui. You can learn GPU Instancing, particle billboarding and rotating to movement and compute shaders all in Raylib!

---

This example requires raylib to be compiled with `GRAPHIC_API=GRAPHICS_API_OPENGL_43`, otherwise you won't be able to use compute shaders.

Features:

- **Highly** documented, you will absolutely understand!

- 100% GPU updated and drawn particles.

- `raylib.h` API.

- `rlgl.h` lower level API.

- `raygui.h` API for **fun** sliders and playing around.

- GPU Instancing example.

- Particle billboarding and rotating to movement example.

- Compute shader example.

## Usage

There are four files in this project. The shaders should be placed under the /Shaders subdirectory. Make sure you have `raygui.h` in your source.

- `main.c`

- `particle_compute.glsl`: Update the particles positions and velocity.

- `particle_vertex.glsl`: Convert triangles to particles by rotating, scaling, coloring and facing them to the camera.

- `particle_fragment.glsl`: Output color.

The simulating parameters can be modified with sliders provided by RayGUI.