Mesh.vertexBufferTarget

描述

The intended target usage of the Mesh GPU vertex buffer.

By default, Mesh vertex buffers have GraphicsBuffer.Target.Vertex usage target. If you want to access the mesh vertex buffer from a compute shader, additional targets need to be requested, for example GraphicsBuffer.Target.Raw.

using UnityEngine;

public class ExampleScript : MonoBehaviour
{
    public Mesh mesh;
    public ComputeShader computeShader;
    void Start()
    {
        // Mark the vertex buffer as needing "Raw"
        // (ByteAddressBuffer, RWByteAddressBuffer in HLSL shaders)
        // access.
        mesh.vertexBufferTarget |= GraphicsBuffer.Target.Raw;
        // Get the vertex buffer of the Mesh, and set it up
        // as a buffer parameter to a compute shader.
        var vertexBuffer = mesh.GetVertexBuffer(0);
        computeShader.SetBuffer(0, "MeshVertexBuffer", vertexBuffer);
        vertexBuffer.Dispose();
    }
}

Additional resources: Target, GetVertexBuffer, indexBufferTarget.