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v1.18.0

kevinraymond/fosforav1.18.0Jul 24, 2026by github-actions[bot]

AI Summary

Introduces a new fluid simulation effect and extends the rendering pipeline to allow custom effects to chain render passes.

Key Highlights

  • New 'Sumi' effect featuring an incompressible fluid simulation with dye colors mapped to pitch classes.
  • Custom effects can now sample earlier passes' output and iterate for relaxation solves.
  • New binding source 'audio.key_hue' allows layers to lock color to the current key.

New Features

  • Sumi fluid effect with Jacobi pressure solve and vorticity confinement
  • Chaining render passes in custom effects (input0, input1, prev_inputs)
  • audio.key_hue binding source

Full Release Notes


### Added
- **New effect: Sumi — ink drops bloom in water on every onset.** A real incompressible fluid — advection, a Jacobi pressure solve, and vorticity confinement — carries twelve dye colours, one per pitch class, that splat onto a circle-of-fifths ring. Bass makes the ink rise, spectral flux sharpens the swirl, and the central drop takes the hue of the detected key.
- **Custom effects can now chain render passes.** A pass in a `.pfx` may sample earlier passes' output this frame through `input0(uv)`, `input1(uv)`, …, read any feedback pass's previous frame via `prev_inputs`, and iterate in place for relaxation solves. This is the machinery behind Sumi's fluid solver and the groundwork for more multi-stage looks.

## Downloads

| Platform | File | Notes |
|----------|------|-------|
| **macOS** | `.dmg` | Universal binary (Apple Silicon + Intel) |
| **Linux x86_64** | `.tar.gz` | glibc 2.35+ (Ubuntu 22.04+, Debian 12+) |
| **Windows x64** | `.zip` | Windows 10+ |

## Getting started

**macOS**: Open the DMG, drag Fosfora.app to Applications (or run directly). Signed and notarized.

**Linux / Windows**: Extract, run `fosfora` from the extracted directory. The `assets/` folder must be next to the binary.

## Requirements

- **GPU**: Vulkan (Linux/Windows) or Metal (macOS)
- **Audio**: Built-in mic or line-in for audio-reactive visuals
- **NDI®** (optional): [NDI® SDK runtime](https://ndi.video) for network video output
- **Video playback** (optional): `ffmpeg` on PATH for media layers

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