Starstruk Logo MarkStarstruk

v1.19.0

kevinraymond/fosforav1.19.0Jul 25, 2026by github-actions[bot]

AI Summary

Modifies particle trails to act as long-exposure light streaks and exposes the particle velocity field to custom effects. This allows for more sophisticated visualizations of particle motion and flow.

Key Highlights

  • **Chronoflow** feature: Particle trails now flow along motion like long-exposure photographs.
  • Added `beat_snap` and `flow_stretch` parameters to tune the trail behavior.
  • Custom effects can now read the particle velocity field via `@particles.velocity`.
  • Existing `trail_decay` values retain their meaning in the new system.

New Features

  • Chronoflow trails
  • Particle velocity field input

Full Release Notes


### Added
- **Chronoflow: particle trails are now long-exposure light streaks.** Phosphor, Flux, and Murmur trails flow *along* each particle's motion like a long-exposure photograph instead of ghosting in place, and on every beat a shutter snap collapses the streaks so the image goes momentarily crisp. Loudness stretches the exposure; new `beat_snap` and `flow_stretch` params (plus `trail_exposure` on Murmur) tune it live, and existing `trail_decay` values keep their meaning.
- **Custom effects can read the particle velocity field.** A `.pfx` pass may declare `"inputs": ["@particles.velocity"]` (with `"velocity_field": true` under `particles`) to sample the compute rasterizer's per-pixel particle velocity as `input0(uv)` — the primitive behind Chronoflow, available to any custom multi-pass effect.

## 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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