Function nannou::window::preferred_present_mode_and_image_count

pub fn preferred_present_mode_and_image_count(
    loop_mode: &LoopMode, 
    min_image_count: u32, 
    present_mode: Option<PresentMode>, 
    image_count: Option<u32>, 
    supported_present_modes: &SupportedPresentModes
) -> (PresentMode, u32)

Determine the optimal present mode and image count for the given loop mode.

If a specific present mode or image count is desired, they may be optionally specified.