public class ScreenshotTool : MonoBehaviour, IAfterRender
    {
        private GrabPass grabPass;

        public ScriptableRenderPass GetPassToEnqueue()
        {
            if (grabPass == null)
                grabPass = new GrabPass();

            return grabPass;
        }
    }

    public class GrabPass : ScriptableRenderPass
    {
        public override void Execute(ScriptableRenderer renderer, ScriptableRenderContext context, ref RenderingData renderingData)
        {
            CommandBuffer buffer = new CommandBuffer();

            Camera camera = renderingData.cameraData.camera;
            using (new ProfilingSample(buffer, "test"))
            {
                RenderTextureDescriptor desc = ScriptableRenderer.CreateRenderTextureDescriptor(ref renderingData.cameraData);
                RenderTexture rt = new RenderTexture(desc);

                Texture2D tex = new Texture2D(camera.pixelWidth, camera.pixelHeight);
                RenderTexture.active = rt;
                tex.ReadPixels(new Rect(0, 0, camera.pixelWidth, camera.pixelHeight), 0, 0);
                tex.Apply();

                File.WriteAllBytes(Path.Combine(Application.persistentDataPath, $"screenshot.jpg"), tex.EncodeToJPG());
                Object.DestroyImmediate(tex);
            }

            context.ExecuteCommandBuffer(buffer);
        }
    }