Compute-driven curl fields and attracted tube trails with luminous gradient shading, two behaviours and saved URP presets. Includes editable components and an English manual.Create flowing tube trails driven by GPU compute simulation. Vector Field Particle Swarm VFX URP includes curl-field and attracted-trail behaviours, a shared tube template, luminous gradient shading and saved presets.Components are present in the Editor, with optional edit-preview redraw near 30 Hz. Each effect owns its GPU buffers and cloned simulation/material resources, released when disabled. No VFX Graph dependency or particle texture is required. Five-page English PDF manual included.This is an abstract visual simulation, not a vector-field importer/editor, collision system, flocking AI or physical trail solver. Original Swarm work by Keijiro Takahashi and noise work by Ashima Arts / Stefan Gustavson remain explicitly credited under retained notices.Unity 6000.0.30f1 / URP 17.0.3. Requires compute shaders and GPU instancing; verified on Windows / Direct3D 11 only.Two behaviours, shared tube template, gradient material, saved presets and five-page English manual. Opaque unlit/stylized shading without realtime shadows.Floating advances at fixed 60 Hz with capped frame delta and history warmup. Supplied 160 tubes x 160 segments can submit about 412,160 triangles. Read manual for bounds, non-uniform-scale, startup and memory limits.Offline video is not an FPS benchmark. Mobile, XR, WebGL and other rendering pipelines are not certified.AI was used during code refactoring and scene preparation.
