A render engine with no editor, built for the agent holding the wheel

What it does

vork renders 3D scenes and VFX on a GPU with no editor, no viewport, and no human-facing controls. An agent (or you) writes scene JSON — or TypeScript/Python via SDKs — renders a frame, inspects the output, and revises. The examples are ambitious: a million simulated birds steered by Slang compute programs, a Schwarzschild black hole bending light, VFX composited onto real footage, and a GPU liquid simulation using APIC/FLIP methods.

The interesting bit

Most creative tools expose controls a person can operate; vork instead exposes programs. Public hooks let a scene author swap out camera rays, material response, light propagation, and film response without touching the renderer — the black hole example is literally a custom light-propagation program plugged into that hook. The agent can write a shader mid-shot.

Key highlights

• Written in Rust and Slang; renders through Vulkan and Metal, with hardware ray queries
• Default pipeline combines raster visibility with ray-traced lighting; a path tracer is also available, with bundled OIDN denoising
• Deep built-in help system (vork help, topic and per-field references) so an agent can discover features without leaving the terminal
• Scene content and render quality are decoupled via profiles (std/previs to iterate, std/final to deliver)
• Runs fully offline for initialization — bundled primitives, no downloads; npm-based setup works from cache without network

Caveats

• Research preview: source-available and free “during the research preview,” which is a phrase with an expiration date
• Rendering needs Apple Silicon or an NVIDIA GPU with Vulkan ray queries; no GPU means authoring only
• The black hole is a numerical approximation, not an exact relativistic solver, and the README is candid that validation catches errors rather than guaranteeing physical exactness

Verdict

Worth a look if you’re building agent pipelines that produce visual output and are tired of video models hallucinating frames. Less relevant if you want a traditional DCC tool with a viewport — the whole point is that nobody’s driving but the agent.