Making Screenshots at Runtime

public class ScreenshotMaker : Component
{
	public enum Format
	{
		tga = 0,
		png,
		jpg
	}

	[ShowInEditor]
	private string namePrefix = "screenshot";

	[ShowInEditor]
	[ParameterSlider(Min = 1)]
	private int width = 640;

	[ShowInEditor]
	[ParameterSlider(Min = 1)]
	private int height = 480;

	[ShowInEditor]
	private Format format = Format.png;

	[ShowInEditor]
	private bool alphaChannel = false;

	private Image image = null;
	private Viewport viewport = null;
	private int count = 0;

	private void Init()
	{
		image = new Image();
		viewport = new Viewport();
		viewport.SkipFlags = Viewport.SKIP_VISUALIZER;

		Unigine.Console.Onscreen = true;
		Unigine.Console.OnscreenMessageLine(vec4.GREEN, "Screenshot component is initialized.");
	}

	private void Update()
	{
		if (Input.IsKeyDown(Input.KEY.T))
		{
			Player player = Game.Player;
			if (player == null)
			{
				Unigine.Console.OnscreenMessageLine(vec4.RED, "No active camera.");
				return;
			}

			Unigine.Console.OnscreenMessageLine(vec4.GREEN, "Trying to take a screenshot...");

			viewport.Mode = Render.ViewportMode;

			// We temporarily set exposure adaptation time to 0, otherwise the image may be too dark
			float exposureAdaptation = Render.ExposureAdaptation;
			Render.ExposureAdaptation = 0.0f;

			// We render with velocity buffer turned off to avoid temporal effects artifacts
			viewport.AppendSkipFlags(Viewport.SKIP_VELOCITY_BUFFER);
			viewport.RenderImage2D(player.Camera, image, width, height);
			viewport.RemoveSkipFlags(Viewport.SKIP_VELOCITY_BUFFER);

			Render.ExposureAdaptation = exposureAdaptation;

			if (!alphaChannel || format == Format.jpg)
			{
				if (image.Format == Image.FORMAT_RGBA8)
					image.ConvertToFormat(Image.FORMAT_RGB8);
				else if (image.Format == Image.FORMAT_RGBA16F)
					image.ConvertToFormat(Image.FORMAT_RGB16F);
			}

			string fullName = $"{namePrefix}_{count}.{format}";
			image.Save(fullName);
			Unigine.Console.OnscreenMessageLine(vec4.GREEN, $"{fullName} saved.");

			count++;
		}
	}
}