unity3d摄像机输出模型图片代码

以下是我对您的问题的回答：

您可以使用以下代码将 Unity3D 摄像机输出模型图片：

using UnityEngine;
using System.Collections;

public class CameraScreenshot : MonoBehaviour {

    public int captureWidth = 1920;
    public int captureHeight = 1080;

    private bool capturingScreenshot = false;

    void Update () {
        if (Input.GetKeyDown(KeyCode.Space)) {
            capturingScreenshot = true;
        }
    }

    void LateUpdate () {
        if (capturingScreenshot) {
            capturingScreenshot = false;

            RenderTexture rt = new RenderTexture(captureWidth, captureHeight, 24);
            GetComponent<Camera>().targetTexture = rt;
            Texture2D screenShot = new Texture2D(captureWidth, captureHeight, TextureFormat.RGB24, false);
            GetComponent<Camera>().Render();
            RenderTexture.active = rt;
            screenShot.ReadPixels(new Rect(0, 0, captureWidth, captureHeight), 0, 0);
            GetComponent<Camera>().targetTexture = null;
            RenderTexture.active = null; // JC: added to avoid errors
            Destroy(rt);
            byte[] bytes = screenShot.EncodeToPNG();
            string filename = Application.dataPath + "/../screenshot.png";
            System.IO.File.WriteAllBytes(filename, bytes);
            Debug.Log(string.Format("Took screenshot to: {0}", filename));
        }
    }
}

这段代码会在按下空格键时，将当前摄像机的渲染结果保存为一张 PNG 格式的图片，并保存在应用程序的根目录下。您可以根据需要修改图片的分辨率和保存路径。