u3d 镜像模糊特效代码

以下是一个简单的U3D镜像模糊特效代码，可以将其添加到摄像机上：

using UnityEngine;

[ExecuteInEditMode]
[RequireComponent(typeof(Camera))]
public class MirrorBlurEffect : MonoBehaviour
{
    public Shader mirrorBlurShader;
    [Range(0, 10)]
    public float blurSize = 1.0f;
    [Range(0, 1)]
    public float mirrorIntensity = 0.5f;

    private Material mirrorBlurMaterial;
    private Camera mirrorCamera;
    private RenderTexture mirrorTexture;

    private void Start()
    {
        mirrorCamera = new GameObject("Mirror Camera").AddComponent<Camera>();
        mirrorCamera.enabled = false;
    }

    private void OnRenderImage(RenderTexture source, RenderTexture destination)
    {
        if (mirrorBlurMaterial == null)
        {
            mirrorBlurMaterial = new Material(mirrorBlurShader);
            mirrorBlurMaterial.hideFlags = HideFlags.HideAndDontSave;
        }

        if (mirrorTexture == null || mirrorTexture.width != source.width || mirrorTexture.height != source.height)
        {
            if (mirrorTexture != null)
                DestroyImmediate(mirrorTexture);

            mirrorTexture = new RenderTexture(source.width, source.height, 0);
            mirrorTexture.hideFlags = HideFlags.HideAndDontSave;
        }

        mirrorCamera.CopyFrom(GetComponent<Camera>());
        mirrorCamera.transform.SetPositionAndRotation(transform.position, transform.rotation * Quaternion.Euler(0, 180, 0));
        mirrorCamera.Render();

        mirrorBlurMaterial.SetFloat("_BlurSize", blurSize);
        mirrorBlurMaterial.SetFloat("_MirrorIntensity", mirrorIntensity);
        mirrorBlurMaterial.SetTexture("_MirrorTex", mirrorTexture);
        Graphics.Blit(source, destination, mirrorBlurMaterial);
    }

    private void OnDisable()
    {
        if (mirrorBlurMaterial != null)
            DestroyImmediate(mirrorBlurMaterial);

        if (mirrorTexture != null)
            DestroyImmediate(mirrorTexture);

        if (mirrorCamera != null)
            DestroyImmediate(mirrorCamera.gameObject);
    }
}

使用方法：

1. 将脚本添加到摄像机上。
2. 在Inspector窗口中设置Shader和其他参数。
3. 运行游戏，即可看到镜像模糊效果。

注意事项：

1. 该脚本需要在摄像机上执行，否则无法生成镜像。
2. Shader需要支持镜像模糊效果。
3. 在使用该脚本时，建议将Camera的Clear Flags设置为Solid Color，并将背景色设置为黑色，以避免出现不必要的镜像。