Playder - Player for Shaders

Playder is a tiny Rust tool for rendering fragment shaders into video files using OpenGL.

How it works

1. It starts with parsing input arguments with help of clap

   USAGE:
       playder <shader> <width> <height> <fps> <duration>
   

2. Then it setups OpenGL with gl-rs and a bit of glutin.

3. Lastly it renders the shader into a video file patching uniform vec3 iResolution and uniform float iTime shader parameters, similar to shadertoy.

Installation

1. Ensure you have Rust installed.

2. Ensure you have FFmpeg installed.

3. Then clone the repository and build the project:

   git clone https://github.com/k06a/playder
   сd playder
   cargo build --release

Usage

Run Playder with the following command, replacing the parameters as needed:

cargo run -- shader.frag 1920 1080 30 10 | ffmpeg -y -f rawvideo -pixel_format rgb24 -video_size 1920x1080 -framerate 30 -i pipe:0 -pix_fmt yuv420p -c:v libx265 -tag:v hvc1 output.mp4

• shader.frag - path to the shader file
• 1920 1080 - video width and height
• 30 - frames per second
• 10 - video duration in seconds

Expected output of this tool is RGB24 each 3 bytes per pixel per frame. You can use ffmpeg to convert it to any format you want.

Example rendering shader in 1920x1080 30fps HEVC of 10 seconds:

cargo run -- shader.frag 1920 1080 30 10 | ffmpeg -y -f rawvideo -pixel_format rgb24 -video_size 1920x1080 -framerate 30 -i pipe:0 -pix_fmt yuv420p -c:v libx265 -tag:v hvc1 output.mp4

Example rendering shader in 7680x3840 60fps HEVC of 10 seconds:

cargo run -- shader.frag 7680 3840 60 10 | ffmpeg -y -f rawvideo -pixel_format rgb24 -video_size 7680x3840 -framerate 60 -i pipe:0 -pix_fmt yuv420p -c:v libx265 -tag:v hvc1 output.mp4

Contributing

We welcome contributions! Please create a pull request or open an issue on GitHub. 🤝

License

This project is licensed under the MIT License.