A+ Grass – Unity
A+ Grass is a highly customizable, interactive stylized grass shader. It uses texture sampling on a mesh, has wind motion and interactive behaviour.
Use A+ Grass to make your games look amazing with interactive stylized grass. It is highly customizable, with endless possiblities. It uses texture sampling, allowing you to input any 2D sprite to render as your grass!
Supported Unity Editor Versions:
✅ 6000.3 + (Developed in 6000.3.9f1)
✅ 6000.0 + (Tested in 6000.0.71f1)
✅ 2022 + (Tested in 2022.3.62f3)
Works In All Rendering Paths:
✅ Forward
✅ Forward +
✅ Deferred
✅ Deferred +
The A+ Grass Package Includes:
A+ Grass Shader
Highly customizable grass shader with a range of features:
Texture sampling
Colour shading with gradient
Colour variation noise texture
Interactive with characters and mouse
Trail/Colour tint for bent grass
Wind settings with 2 noise blend mode
Perspective correction
Distance Fading (Dithering)
Object Culling (At Distance Fade End)
Core Scripts
Grass Manager
The Grass Manager is responsible for managing all interactive grass elements in the scene. There is also global settings for the wind and recovery of the grass from interactions.
Grass Interactor
The Grass Interactor is responsible for handling the interactions between the grass and other objects in the scene. It allows objects to affect the grass, bending and pushing it. You can have as many interactors in the scene, just make sure to add the Grass Interactor component to each.
Mouse Interaction Handler
The Mouse Grass Interaction Handler provides data from the mouse position off the camera using a ray to allow an interactor to follow the mouse position and interact with the grass.
Grass Animator
The Grass Animator allows for animation of the Grass Interactors set on a customizable path, similar to a spline. You can make it linear or curved, play once, loop or ping pong, set off unity events and more.
Placement Tool
The asset includes a placement tool that lets you paint prefabs in the scene. Easy to use and effective, making world creating effortless. (Can be used with any prefabs, not just grass)
Prefab Palettes – Creating presets to choose when painting
Pin – Click to place single prefab
Brush – Click and drag to paint multiple with set radius and density
Eraser – Click and drag to remove painted prefabs
Example Scenes
Demo 01 – Mouse Interaction
Demo 02 – Characters & Object Interaction
Demo 03 – Terrain Example
Demo 04 – Placement Tool
Demo 05 – Grass Animator
Templates
6 unique grass presets/prefabs included, ready to go
(That includes 9 unique grass textures & 3 flower textures, 1 colour noise texture, 2 wind noise textures, 1 color ramp texture)
Documentation
Each script contains tooltips
Documentation .pdf file (Inlcuded in the package)
In depth website breakdown (Link above)
YouTube/Video tutorials (Included on the website)
Technical details:
Texture based grass rendering
Texture ramp
Adjustable color with gradient settings (offset / contrast)
Color variation setup with noise map (scale / strength)
Trail – colour tinit for bent grass
Wind noise with 2 noise textures and blend settings (scroll / jitter / blend)
Interactive behavior (mouse / characters / objects)
Camera perspective correction
Distance culling
Shadow recieved strength
Grass Manager Features:
Winds multiplier
Wind direction
Transition speed (when values change at runtime)
Grass recovery speed & delay
True culling
Grass Interactor Features:
Push rate
Maximum rate
Movement threshold
Detection radius & position offset
Movement unity events
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