v1.21.0

Added

• Obstacles can now be 3D models. Any collision effect (Tide, Vessel, Cleave, …) can flow particles over a spinning 3D model — pick Model in the Obstacle panel and load a .glb/.gltf mesh or a .ply/.splat cloud. The new Drape collision mode reads the model's surface relief and sheets water down the form and into its hollows (eye sockets, recesses) instead of parting around a flat silhouette, with a Show model underlay to see the shape the water flows over.
• Trail length is now a live control. A Trail length slider in the Particles panel sets any effect's trails from 0 (off) up to 32 points at runtime — shorten it to read individual particle paths, or add trails to an effect that ships without them. Presets remember the setting.

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 for network video output
• Video playback (optional): ffmpeg on PATH for media layers

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