agb/examples/syscall.rs
2021-03-08 01:59:54 +00:00

22 lines
465 B
Rust

#![no_std]
#![feature(start)]
extern crate gba;
use gba::{display, syscall};
#[start]
fn main(_argc: isize, _argv: *const *const u8) -> isize {
let mut gba = gba::Gba::new();
let mut bitmap = gba.display.video.bitmap3();
for x in 0..display::WIDTH {
let y = syscall::sqrt(x << 6);
let y = (display::HEIGHT - y).clamp(0, display::HEIGHT - 1);
bitmap.draw_point(x, y, 0x001F);
}
loop {
syscall::halt();
}
}