Version: 2022.3
语言: 中文

ScreenCapture.CaptureScreenshotIntoRenderTexture

切换到手册
public static void CaptureScreenshotIntoRenderTexture (RenderTexture renderTexture);

参数

renderTexture 将使用屏幕内容填充的 RenderTexture。

描述

将此游戏对象的截屏捕获到 RenderTexture 对象中。

通过屏幕捕获的这种变体，可以使用 AsyncGPUReadback 异步读取像素，从而使该过程在主线程上花费的时间更少。

有关何时调用此方法的信息，请参阅 ScreenCapture.CaptureScreenshotAsTexture 中的说明。 

using UnityEngine;
using System.Collections;
using UnityEngine.Rendering;

public class ScreenCaptureIntoRenderTexture : MonoBehaviour
{
    private RenderTexture renderTexture;

    IEnumerator Start()
    {
        yield return new WaitForEndOfFrame();

        renderTexture = new RenderTexture(Screen.width, Screen.height, 0);
        ScreenCapture.CaptureScreenshotIntoRenderTexture(renderTexture);
        AsyncGPUReadback.Request(renderTexture, 0, TextureFormat.RGBA32, ReadbackCompleted);
    }

    void ReadbackCompleted(AsyncGPUReadbackRequest request)
    {
        // Render texture no longer needed, it has been read back.
        DestroyImmediate(renderTexture);

        using (var imageBytes = request.GetData<byte>())
        {
            // do something with the pixel data.
        }
    }
}

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