Stylized grass, wind, clouds and sky for Unity 6 URP.
A simple setup with one rig: grass sways and parts around characters, cloud shadows drift, and the sky turns from day to night on one clock.URP only: Unity 6000.0 or newer with URP 17.0 or newer.Built-in and HDRP are not supported.Cloud shadows need Light Cookies on your URP asset (the Fable Setup window turns them on).Without compute shaders (WebGL 2, OpenGL ES 3), grass switches to a slower CPU path automatically.Grass is lit by the main light, ambient and fog, not by point or spot lights.Fable is a stylized environment rig for Unity 6 and URP. One Fable object runs four modules that share one wind and one clock, so everything in the scene moves together.Grass: GPU-instanced blades on any mesh, or drawn along a spline as strips and filled areas. Five ready-made looks (Meadow, Lawn, Savanna, Frost, Blossom). Objects push the blades aside and leave a wake, and the grass can blend its colour with the ground beneath.Wind: one breeze and gust field that the grass, the clouds and your own shaders all follow.Clouds: drifting cloud shadows cast through the sun, with no geometry and no extra shadow pass. The sky draws the same clouds overhead.Sky: a stylized gradient sky with sun, moon and stars on a day/night cycle that also drives ambient light, fog and post-processing.Everything is edited in one tabbed inspector, with search, presets and one-click copies of any preset.Fable Setup checks your project and adds a working rig to your scene in one click.The Core Demos sample has one small room per feature, with steps to click through and live controls.Full C# source included.DocumentationOnline manual: https://alfredwooden.github.io/fable-docs/Offline copy included in the package (Documentation~/Fable.md).Support - DiscordFeaturesWind, Sky, Clouds and Grass modules on one rig, with a tabbed, searchable inspector.GPU grass from compute shaders, with an automatic CPU fallback.Spline grass (strips and fills), grass interaction (up to 64 objects at once), ground colour blending, distance fade and quality presets.Cloud shadows through the sun's light cookie, matched by the sky's clouds.Day/night sky with sun, moon and stars, driving ambient light, fog and post-processing.Works with Domain Reload disabled.Core Demos sample: six rooms.RequirementsUnity 6000.0 or newer, URP 17.0 or newer. Built-in and HDRP are not supported.Light Cookies on the URP asset, for cloud shadows. Fable Setup turns them on.Supported platformsEditor: Windows and macOS.WebGL tested (WebGPU and WebGL 2). Without compute shaders, grass uses a CPU path about 3x slower.Mobile uses the same code paths but is lightly tested.The C# code, shaders and editor tools were written with an AI coding assistant (Claude) working under my direction. I designed, reviewed and tested every change.All the art section, textures and models were done by myself.
