Aris Lyu

Summary: Create a large amount of mesh using GPU Instancing in Unity, which is useful for creating grass.

The steps to create a square-shaped grass include:

• Create a C# script to generate meshes.
• Calculate the position, vertices, and other properties of each bush in a Compute Shader.
• "Run" the Compute Shader with .Dispatch.
• Detect collision with the box collision component in a C# script.

GPU Instancing

The grass is actually a collection of two-piece meshes. Using GPU instancing makes it fast and efficient to render the same mesh in the same draw call.

Add more grass count

Collision

Moving the capsule will cause the nearby grass to wobble.

Moving the cube eraser can destroy grass.