摄像头拍摄模型、特效给UI

using UnityEngine;
using UnityEngine.UI;

public class CameraRTT
{
    public RenderTexture ShowTex { get { return m_renderTexture; } }
    static int Layer_ModelRTT = 9;
    static int s_count = 0;
    
    private RenderTexture m_renderTexture;
    private GameObject m_gameObject;
    private Camera m_camera;

    public CameraRTT(int size = 512)
    {
        s_count++;

        m_renderTexture = new RenderTexture(size, size, 24, RenderTextureFormat.ARGB32);
        m_renderTexture.name = "RTTTexture" + s_count;        

        m_gameObject = new GameObject("RTTGameObject" + s_count);
        m_gameObject.layer = Layer_ModelRTT;
        m_gameObject.transform.localPosition = new Vector3(s_count * 100f, 0f, 0f);
        m_gameObject.SetActive(false);

        m_camera = m_gameObject.AddComponent();
        m_camera.orthographic = true;
        m_camera.orthographicSize = 1;
        m_camera.cullingMask = 1 << Layer_ModelRTT;
        m_camera.clearFlags = CameraClearFlags.SolidColor;
    }
    
    public void ShowSingleModel(GameObject obj, RawImage uiTexture, Vector3 pos, Vector3 rot, Vector3 scale)
    {
        if (m_gameObject == null || m_camera == null) return;

        obj.transform.parent = m_gameObject.transform;
        obj.layer = Layer_ModelRTT;
        obj.transform.localPosition = pos;
        obj.transform.eulerAngles = rot;
        obj.transform.localScale = scale;

        m_camera.targetTexture = m_renderTexture;
        uiTexture.texture = m_renderTexture;

        m_gameObject.SetActive(true);
    }
}

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