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GrassFlow is a complete vegetation system centered around a highly interactive/customizable/optimized shader.

Automatically handles placement/rendering, controlled by familiar painting tools.
Render pipeline compatibility
The Built-in Render Pipeline is Unity’s default render pipeline. It is a general-purpose render pipeline that has limited options for customization. The Universal Render Pipeline (URP) is a Scriptable Render Pipeline that is quick and easy to customize, and lets you create optimized graphics across a wide range of platforms. The High Definition Render Pipeline (HDRP) is a Scriptable Render Pipeline that lets you create cutting-edge, high-fidelity graphics on high-end platforms.
Unity VersionBuilt-inURPHDRP
2019.4.40f1
Compatible
Compatible
Not compatible
Description

Documentation Available Here


GrassFlow is as simple as adding a renderer and setting your mesh/terrain, the rest is handled for you~

No need for any additional plugins/scripts.


Whether realistic or stylized, we've got 100% More vibes than the competition


Features:


~Grass placement and GPU instancing/batching handled automatically so you don't have to worry about individual game objects or other inefficient bottlenecks.


~Simple but strong editing tools to let you create grass the way you want and paint color and grass parameters for perfect artistic control right from the editor just like the Unity terrain tools. Even supports undo/redo!


~Easily add player interactivity with simple components for pushing or flatenning grass, plus other effects in realtime.


~Supports using custom 3D meshes to draw grass.


~Nice and cheap lighting effects using normal maps and specular highlights.


~Supports grass texture atlas and you can paint density of individual textures to lay out your grass as you please.


~Can be attached precisely to meshes or Unity terrain with terrain layer/splat map support.


~Automatically normalize mesh density to avoid remeshing.


~URP support.


~Deferred support.


~Cast and receive shadows, supporting semi transparent textures.


~Baked 3D noise allows for efficient dynamic and evolving wind effects.


~Dynamic LOD system that decreases grass in the distance while scaling it to fill in the gaps and smoothly fading in-between LOD steps.


~Use of asynchronous multithreading in key areas to speed up loading and rendering.


~Supports multiple Unity lights.


~VR supported including single-pass instanced.


~Versatile, can be used as a more traditional billboard renderer with enhanced features or used in any way you see fit.


~Custom inspectors make it easy to edit all the settings you need and has descriptive tooltips for every option.


~Example scenes are provided that show how to set up and interface with GrassFlow. Even comes with the models seen in the demo video, bonus!


~Source code available if you fancy.


Technical details

Important Notes:


• GrassFlow requires compute shader support and at least one compute buffer input to vertex shaders. (Only relevant to mobile, but most modern mobile devices support this.)

If this is an issue for you, please let me know.


• All demo videos rendered with a GTX1080ti and i7-8700K.


• URP is supported, but not the older LWRP or HDRP.


Demo scene models and animation provided by my good friend, Richard Sööt.



Any questions about functionality don't hesitate to ask me!

GrassFlow 2

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License type: Single Entity
Single Entity
Recommended for individuals and small businesses.
Multi Entity
Recommended for large enterprises working across multiple locations.
Refund policy
This asset is covered by the Unity Asset Store Refund Policy. Please see section 2.9.3 of the EULA for details.
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Supported payment methods: Visa, Mastercard, Maestro, Paypal, Amex
License type
File size
42.3 MB
Latest version
2.75
Latest release date
Jan 16, 2025
Original Unity version
2019.4.40
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