Is there a way for this to work with URP?

[rrahim]

I was initially confused when I added it to a project and it didn't work (no errors either). I then ran the sample project and it worked fine.

Converted a test project of mine to Built In RP, and voila it works.

So I'm guessing the documentation doesn't mention that URP is not supported.

Has anyone found a way to support URP using UnityCapture?

[ShutoTakashita]

Hi,

I had the same problem. It was necessary to use the URP rendering pipeline to capture a single UI on two cameras.

I changed UnityCapture.cs as follows and it worked fine. This is the code I had GPT4 generate, so I don't really understand the logic either. I'm not sure I actually understand the logic behind it, but I'm sharing it here because I think it will be helpful to those who just need it to work.

 using UnityEngine;
 using System.Collections;

 [RequireComponent(typeof(Camera))]
 public class UnityCapture : MonoBehaviour
 {
public enum ECaptureDevice { CaptureDevice1 = 0, CaptureDevice2 = 1, CaptureDevice3 = 2, CaptureDevice4 = 3, CaptureDevice5 = 4, CaptureDevice6 = 5, CaptureDevice7 = 6, CaptureDevice8 = 7, CaptureDevice9 = 8, CaptureDevice10 = 9 }
public enum EResizeMode { Disabled = 0, LinearResize = 1 }
public enum EMirrorMode { Disabled = 0, MirrorHorizontally = 1 }
public enum ECaptureSendResult { SUCCESS = 0, WARNING_FRAMESKIP = 1, WARNING_CAPTUREINACTIVE = 2, ERROR_UNSUPPORTEDGRAPHICSDEVICE = 100, ERROR_PARAMETER = 101, ERROR_TOOLARGERESOLUTION = 102, ERROR_TEXTUREFORMAT = 103, ERROR_READTEXTURE = 104, ERROR_INVALIDCAPTUREINSTANCEPTR = 200 };

[SerializeField] [Tooltip("Capture device index")] public ECaptureDevice CaptureDevice = ECaptureDevice.CaptureDevice1;
[SerializeField] [Tooltip("Scale image if Unity and capture resolution don't match (can introduce frame dropping, not recommended)")] public EResizeMode ResizeMode = EResizeMode.Disabled;
[SerializeField] [Tooltip("How many milliseconds to wait for a new frame until sending is considered to be stopped")] public int Timeout = 1000;
[SerializeField] [Tooltip("Mirror captured output image")] public EMirrorMode MirrorMode = EMirrorMode.Disabled;
[SerializeField] [Tooltip("Introduce a frame of latency in favor of frame rate")] public bool DoubleBuffering = false;
[SerializeField] [Tooltip("Check to enable VSync during capturing")] public bool EnableVSync = false;
[SerializeField] [Tooltip("Set the desired render target frame rate")] public int TargetFrameRate = 60;
[SerializeField] [Tooltip("Check to disable output of warnings")] public bool HideWarnings = false;

Interface CaptureInterface;
Camera cam;
RenderTexture captureTexture;

void Awake()
{
    QualitySettings.vSyncCount = (EnableVSync ? 1 : 0);
    Application.targetFrameRate = TargetFrameRate;

    if (Application.runInBackground == false)
    {
        Debug.LogWarning("Application.runInBackground switched to enabled for capture streaming");
        Application.runInBackground = true;
    }
}

void Start()
{
    CaptureInterface = new Interface(CaptureDevice);

    cam = GetComponent<Camera>();

    // Create a RenderTexture with the same dimensions as the screen
    captureTexture = new RenderTexture(Screen.width, Screen.height, 24, RenderTextureFormat.Default);
    captureTexture.Create();

    // Assign the RenderTexture to the camera's targetTexture
    cam.targetTexture = captureTexture;

    // Start the coroutine to capture frames
    StartCoroutine(CaptureCoroutine());
}

void OnDestroy()
{
    CaptureInterface.Close();

    if (captureTexture != null)
    {
        cam.targetTexture = null;
        captureTexture.Release();
        Destroy(captureTexture);
    }
}

IEnumerator CaptureCoroutine()
{
    while (true)
    {
        // Wait for the end of the frame
        yield return new WaitForEndOfFrame();

        // Send the RenderTexture to the capture interface
        switch (CaptureInterface.SendTexture(captureTexture, Timeout, DoubleBuffering, ResizeMode, MirrorMode))
        {
            case ECaptureSendResult.SUCCESS: break;
            case ECaptureSendResult.WARNING_FRAMESKIP:
                if (!HideWarnings) Debug.LogWarning("[UnityCapture] Capture device did skip a frame read, capture frame rate will not match render frame rate.");
                break;
            case ECaptureSendResult.WARNING_CAPTUREINACTIVE:
                if (!HideWarnings) Debug.LogWarning("[UnityCapture] Capture device is inactive");
                break;
            case ECaptureSendResult.ERROR_UNSUPPORTEDGRAPHICSDEVICE:
                Debug.LogError("[UnityCapture] Unsupported graphics device (only D3D11 supported)");
                break;
            case ECaptureSendResult.ERROR_PARAMETER:
                Debug.LogError("[UnityCapture] Input parameter error");
                break;
            case ECaptureSendResult.ERROR_TOOLARGERESOLUTION:
                Debug.LogError("[UnityCapture] Render resolution is too large to send to capture device");
                break;
            case ECaptureSendResult.ERROR_TEXTUREFORMAT:
                Debug.LogError("[UnityCapture] Render texture format is unsupported (only basic non-HDR (ARGB32) and HDR (FP16/ARGB Half) formats are supported)");
                break;
            case ECaptureSendResult.ERROR_READTEXTURE:
                Debug.LogError("[UnityCapture] Error while reading texture image data");
                break;
            case ECaptureSendResult.ERROR_INVALIDCAPTUREINSTANCEPTR:
                Debug.LogError("[UnityCapture] Invalid Capture Instance Pointer");
                break;
        }
    }
}

public class Interface
{
    [System.Runtime.InteropServices.DllImport("UnityCapturePlugin")] extern static System.IntPtr CaptureCreateInstance(int CapNum);
    [System.Runtime.InteropServices.DllImport("UnityCapturePlugin")] extern static void CaptureDeleteInstance(System.IntPtr instance);
    [System.Runtime.InteropServices.DllImport("UnityCapturePlugin")] extern static ECaptureSendResult CaptureSendTexture(System.IntPtr instance, System.IntPtr nativetexture, int Timeout, bool UseDoubleBuffering, EResizeMode ResizeMode, EMirrorMode MirrorMode, bool IsLinearColorSpace);
    System.IntPtr CaptureInstance;

    public Interface(ECaptureDevice CaptureDevice)
    {
        CaptureInstance = CaptureCreateInstance((int)CaptureDevice);
    }

    ~Interface()
    {
        Close();
    }

    public void Close()
    {
        if (CaptureInstance != System.IntPtr.Zero) CaptureDeleteInstance(CaptureInstance);
        CaptureInstance = System.IntPtr.Zero;
    }

    public ECaptureSendResult SendTexture(Texture Source, int Timeout = 1000, bool DoubleBuffering = false, EResizeMode ResizeMode = EResizeMode.Disabled, EMirrorMode MirrorMode = EMirrorMode.Disabled)
    {
        if (CaptureInstance == System.IntPtr.Zero) return ECaptureSendResult.ERROR_INVALIDCAPTUREINSTANCEPTR;
        return CaptureSendTexture(CaptureInstance, Source.GetNativeTexturePtr(), Timeout, DoubleBuffering, ResizeMode, MirrorMode, QualitySettings.activeColorSpace == ColorSpace.Linear);
    }
}
 }

`