3D 纹理

只能从脚本创建 3D 纹理。以下代码片段将创建 3D 纹理，其中每个轴 X、Y 和 Z 对应于红色、绿色和蓝色的颜色值。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Example : MonoBehaviour
{

    Texture3D texture;

    void Start ()
    {
        texture = CreateTexture3D (256);
    }

    Texture3D CreateTexture3D (int size)
    {
        Color[] colorArray = new Color[size * size * size];
        texture = new Texture3D (size, size, size, TextureFormat.RGBA32, true);
        float r = 1.0f / (size - 1.0f);
        for (int x = 0; x < size; x++) {
            for (int y = 0; y < size; y++) {
                for (int z = 0; z < size; z++) {
                    Color c = new Color (x * r, y * r, z * r, 1.0f);
                    colorArray[x + (y * size) + (z * size * size)] = c;
                }
            }
        }
        texture.SetPixels (colorArray);
        texture.Apply ();
        return texture;
    }
        
}