pub const SCREEN_WIDTH: u32 = 256;
pub const SCREEN_HEIGHT: u32 = 240;
pub const PIXEL_BYTES: u32 = 3;
pub const PIXELS_CAPACITY: usize =
SCREEN_WIDTH as usize * SCREEN_HEIGHT as usize * PIXEL_BYTES as usize;
pub trait Display {
fn render_pixel(&mut self, x: u16, y: u16, c: u32);
fn vblank(&mut self);
fn copy_to_rgba_pixels(&self, pixels: &mut [u8]);
}