MaterialPropertyBlock.SetColor

参数

描述

设置颜色属性。

向代码块添加属性。如果具有给定名称的颜色属性已存在，则替换旧值。

颜色值被视为始终在 sRGB 空间中设置，会在活动颜色空间是线性时转换为线性。如果在颜色空间之间进行切换，则需要手动更新颜色值。

using UnityEngine;

// Draws 3 meshes with the same material but with different colors.
public class ExampleClass : MonoBehaviour
{
    public Mesh mesh;
    public Material material;
    private MaterialPropertyBlock block;

    void Start()
    {
        block = new MaterialPropertyBlock();
    }

    void Update()
    {
        // red mesh
        block.SetColor("_Color", Color.red);
        Graphics.DrawMesh(mesh, new Vector3(0, 0, 0), Quaternion.identity, material, 0, null, 0, block);

        // green mesh
        block.SetColor("_Color", Color.green);
        Graphics.DrawMesh(mesh, new Vector3(5, 0, 0), Quaternion.identity, material, 0, null, 0, block);

        // blue mesh
        block.SetColor("_Color", Color.blue);
        Graphics.DrawMesh(mesh, new Vector3(-5, 0, 0), Quaternion.identity, material, 0, null, 0, block);
    }
}

采用 nameID 的函数变体会更快。如果要使用相同名称反复更改属性， 则使用 Shader.PropertyToID 获取该名称的唯一标识符，然后将该标识符传递给 SetColor。

using UnityEngine;

// Draws 3 meshes with the same material but with different colors.
public class ExampleClass : MonoBehaviour
{
    public Mesh mesh;
    public Material material;
    private MaterialPropertyBlock block;
    private int colorID;

    void Start()
    {
        block = new MaterialPropertyBlock();
        colorID = Shader.PropertyToID("_Color");
    }

    void Update()
    {
        // red mesh
        block.SetColor(colorID, Color.red);
        Graphics.DrawMesh(mesh, new Vector3(0, 0, 0), Quaternion.identity, material, 0, null, 0, block);

        // green mesh
        block.SetColor(colorID, Color.green);
        Graphics.DrawMesh(mesh, new Vector3(5, 0, 0), Quaternion.identity, material, 0, null, 0, block);

        // blue mesh
        block.SetColor(colorID, Color.blue);
        Graphics.DrawMesh(mesh, new Vector3(-5, 0, 0), Quaternion.identity, material, 0, null, 0, block);
    }
}

另请参阅：SetFloat、SetVector、SetMatrix、SetTexture。