private void OnPaintSurface(object sender, SKPaintGLSurfaceEventArgs e)
{
game.Update();
var canvas = e.Surface.Canvas;
canvas.Clear(SKColors.Black);
using var save = new SKAutoCanvasRestore(canvas, true);
scale = Math.Min(
(float)e.BackendRenderTarget.Width / baseSize.Width,
(float)e.BackendRenderTarget.Height / baseSize.Height);
var screenRect = (SKRect)e.BackendRenderTarget.Rect;
var centeredRect = screenRect.AspectFit(baseSize);
offset = centeredRect.Location;
canvas.Translate(offset);
canvas.Scale(scale);
canvas.ClipRect(SKRect.Create(baseSize));
game.Draw(canvas);
}
