extern crate sdl2;
extern crate gl;

//use std::ffi::CString;
//pub mod draw;

static _WIN_W : u32 = 800;
static _WIN_H : u32 = 600;

fn main() {
    let _sdl = sdl2::init().unwrap();
    let _video = _sdl.video().unwrap();
    let _win = _video
        .window("foobar", _WIN_W, _WIN_H)
        .opengl() // add opengl flag
        .resizable()
        .build()
        .unwrap();

    let _gl_ctx = _win.gl_create_context().unwrap();
    let _gl = gl::load_with(|s| _video.gl_get_proc_address(s) as
                            *const std::os::raw::c_void);

//    let _vsdr = draw::Shader::load_vs_code(&CString::new(include_str!("data/quad.v.glsl").unwrap.unrap();
//    let _fsdr = draw::Shader::load_fs_code(&CString::new(include_str!("data/quad.f.glsl").unwrap.unrap();
//    let sdr_prog = draw::Program::from_shaders(&[vsdr, fsdr]).unwrap();

    unsafe {
        gl::ClearColor(0.3, 0.1, 0.1, 1.0);
    }

    let mut event_pump = _sdl.event_pump().unwrap();
    'main: loop {
        for _event in event_pump.poll_iter() {
            // handle user input here
            match _event {
                sdl2::event::Event::Quit {..} |
                sdl2::event::Event::KeyDown {keycode:
                    Some(sdl2::keyboard::Keycode::Escape), ..} =>
                        break 'main,
                _ => {},
            }
        }

        unsafe {
            gl::Clear(gl::COLOR_BUFFER_BIT);
            gl::Viewport(0, 0, _WIN_W as i32, _WIN_H as i32);
        }

        _win.gl_swap_window();
    }
}