如何在Unity3d中使用透明背景捕获屏幕截图?

本文关键字：背景屏幕截图透明 Unity3d | 更新日期: 2023-09-27 18:16:10

我试图在Unity3D Pro中捕获游戏对象的屏幕截图，以便它具有透明的背景。这个脚本是建议给我的，它工作，当连接到主相机，只要材质没有纹理。然后我得到一个半透明的游戏物体，如这个例子所示。http://sta.sh/0iwguk5rx61。如有任何帮助，我将不胜感激。

public int resWidth = 2550; 
public int resHeight = 3300;
private bool takeHiResShot = false;
    public static string ScreenShotName(int width, int height) {
    return string.Format("{0}/screen_{1}x{2}_{3}.png", 
                         Application.dataPath, 
                         width, height, 
                         System.DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss"));
}
public void TakeHiResShot() {
    takeHiResShot = true;
}
void LateUpdate() {
    takeHiResShot |= Input.GetKeyDown("k");
    if (takeHiResShot) 
    {
        RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);
        camera.targetTexture = rt;
        Texture2D screenShot = new Texture2D(resWidth, resHeight, TextureFormat.ARGB32, false);
        camera.Render();
        RenderTexture.active = rt;
        screenShot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0);
        camera.targetTexture = null;
        RenderTexture.active = null; 
        Destroy(rt);
        byte[] bytes = screenShot.EncodeToPNG();
        string filename = ScreenShotName(resWidth, resHeight);
        System.IO.File.WriteAllBytes(filename, bytes);
        Debug.Log(string.Format("Took screenshot to: {0}", filename));
        Application.OpenURL(filename);
        takeHiResShot = false;
    }
}

西班牙

如何在Unity3d中使用透明背景捕获屏幕截图?

看看是否适合你。

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
public class Screenshot : MonoBehaviour
{
    private void Start()
    {
        string filename = string.Format("Assets/Screenshots/capture_{0}.png", DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss-fff"));
        if (!Directory.Exists("Assets/Screenshots"))
        {
            Directory.CreateDirectory("Assets/Screenshots");
        }
        TakeTransparentScreenshot(Camera.main, Screen.width, Screen.height, filename);
    }
    public static void TakeTransparentScreenshot(Camera cam, int width, int height, string savePath)
    {
        // Depending on your render pipeline, this may not work.
        var bak_cam_targetTexture = cam.targetTexture;
        var bak_cam_clearFlags = cam.clearFlags;
        var bak_RenderTexture_active = RenderTexture.active;
        var tex_transparent = new Texture2D(width, height, TextureFormat.ARGB32, false);
        // Must use 24-bit depth buffer to be able to fill background.
        var render_texture = RenderTexture.GetTemporary(width, height, 24, RenderTextureFormat.ARGB32);
        var grab_area = new Rect(0, 0, width, height);
        RenderTexture.active = render_texture;
        cam.targetTexture = render_texture;
        cam.clearFlags = CameraClearFlags.SolidColor;
        // Simple: use a clear background
        cam.backgroundColor = Color.clear;
        cam.Render();
        tex_transparent.ReadPixels(grab_area, 0, 0);
        tex_transparent.Apply();
        // Encode the resulting output texture to a byte array then write to the file
        byte[] pngShot = ImageConversion.EncodeToPNG(tex_transparent);
        File.WriteAllBytes(savePath, pngShot);
        cam.clearFlags = bak_cam_clearFlags;
        cam.targetTexture = bak_cam_targetTexture;
        RenderTexture.active = bak_RenderTexture_active;
        RenderTexture.ReleaseTemporary(render_texture);
        Texture2D.Destroy(tex_transparent);
    }
}

你可能需要刷新你的资产文件夹(Ctrl+R)，使屏幕截图文件夹出现在检查器中。

我是哥伦比亚人，我的英语不好，希望你能理解我，

我有同样的问题，并通过将TextureFormat ARGB32更改为RGB24来解决它:

...
RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);
camera.targetTexture = rt;
Texture2D screenShot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false);
camera.Render();
RenderTexture.active = rt;
...

我希望能对你有所帮助参见u，:D

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