| x | 要设置的像素的 x 坐标。范围为 0 至（纹理宽度 - 1）。 |
| y | 要设置的像素的 y 坐标。范围为 0 至（纹理高度 - 1）。 |
| color | 要设置的颜色。 |
| mip | 要写入到的 Mipmap 级别。范围为 0 至纹理的 Texture.mipmapCount。默认值为 0。 |
| face | 要写入到的 CubemapFace。 |
设置坐标 (x,y) 的像素颜色。
此方法为 CPU 内存中的纹理设置像素数据。 Texture.isReadable 必须为 true，并且必须在 SetPixel 后调用 Apply，才能将已更改的像素上载至 GPU。
Apply 是一项高开销操作，因为它会复制纹理中的所有像素，即使你只更改了部分像素也如此，因此在调用它之前尽可能多地更改像素。SetPixel 可能比一些其他纹理方法慢，因为它会将 Color 结构转换为纹理所使用的格式。若要更快速地设置像素数据，请改用 SetPixelData。
某个面的左下角为 (0, 0)。如果像素坐标超出纹理的尺寸，Unity 会根据纹理的 TextureWrapMode 将其裁剪或重复。
如果你需要获取大块像素，则使用 SetPixels 可能会更快。
你可以使用 SetPixel 和以下 纹理格式
对于所有其他格式，Unity 会忽略 SetPixel。
其他资源：SetPixels、SetPixelData、GetPixel、Apply。
using UnityEngine;
public class Example : MonoBehaviour { public Cubemap cubeMap;
void Start() { // Set the pixel at (0,0) of the +X face red. cubeMap.SetPixel(CubemapFace.PositiveX, 0, 0, Color.red); cubeMap.Apply(); // Apply the stuff done to the Cubemap. } }
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