Function ggez::graphics::set_drawable_size

pub fn set_drawable_size(
    context: &mut Context, 
    width: f32, 
    height: f32
) -> GameResult

Sets the window size (in physical pixels) / resolution to the specified width and height.

Note: These dimensions are only interpreted as resolutions in true fullscreen mode. If the selected resolution is not supported this function will return an Error.