public PictureRenderer(PictureCanvas canvas)
{
Canvas = canvas;
for (var index = 0; index < DitherPalette.Length; index++)
DitherPalette[index] = DefaultDithers[index % EgaDitherPaletteSize];
Canvas.Clear();
Canvas.Visual.SetColor(0, 0);
Canvas.Priority.SetColor(0);
}