Unity URPのScriptableRendererFeatureで画面をキャプチャ

CaptureRendererFeature.cs

using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

public class CaptureRendererFeature : ScriptableRendererFeature
{
    public event System.Action<CaptureRendererFeature> OnCaptured;

    [SerializeField] private RenderPassEvent _renderPassEvent = RenderPassEvent.AfterRenderingOpaques;

    private CaptureRendererPass _captureRendererPass;
    public RenderTexture Buffer { get; private set; }

    public bool NeedCapture { get; set; }

    public override void Create()
    {
        if (_captureRendererPass == null)
        {
            Buffer = new RenderTexture(Screen.width, Screen.height, 1, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB);
            Buffer.Create();
            _captureRendererPass = new CaptureRendererPass(_renderPassEvent, Buffer);
            _captureRendererPass.OnCaptured += () =>
            {
                NeedCapture = false;
                OnCaptured?.Invoke(this);
            };
        }
    }

    public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
    {
        if (!NeedCapture) return;

        renderer.EnqueuePass(_captureRendererPass);
    }

    #region ### ------------------------------ Pass ------------------------------ ###

    private class CaptureRendererPass : ScriptableRenderPass
    {
        public event System.Action OnCaptured;

        private const string kName = nameof(CaptureRendererPass);

        private RenderTexture _renderTexture;

        public CaptureRendererPass(RenderPassEvent passEvent, RenderTexture renderTexture)
        {
            renderPassEvent = passEvent;
            _renderTexture = renderTexture;
        }

        public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
        {
            CommandBuffer buffer = CommandBufferPool.Get(kName);

            ref CameraData cameraData = ref renderingData.cameraData;
            if (cameraData.isSceneViewCamera) return;

            RenderTargetIdentifier colorAttachmentIdentifier = cameraData.renderer.cameraColorTargetHandle.nameID;
            buffer.Blit(colorAttachmentIdentifier, _renderTexture);

            context.ExecuteCommandBuffer(buffer);
            CommandBufferPool.Release(buffer);

            OnCaptured?.Invoke();
        }
    }

    #endregion ### ------------------------------ Pass ------------------------------ ###
}