Print frame which shows issue

agb/examples/text_render.rs

@@ -47,7 +47,17 @@ fn main(mut gba: agb::Gba) -> ! {
     bg.commit();
     bg.show();
 
+    let mut frame = 0;
+
     loop {
         vblank.wait_for_vblank();
+
+        let mut writer = FONT.render_text((4u16, 0u16).into(), 1, 2, &mut bg, &mut vram);
+
+        writeln!(&mut writer, "Frame {}", frame).unwrap();
+        writer.commit();
+        bg.commit();
+
+        frame += 1;
     }
 }