Post snippet "Getting Lost in Unsafe Region snippets" on Medium

correct.rs

pgr.draw(viewport::Viewport {
    rect: [ 0, 0, w as i32, h as i32 ],
    draw_size: [ w as u32, h as u32 ],
    window_size: [ w.into(), h.into() ],
}, |c, pgr| {
    use graphics::*;

    let mut glycache = opengl_graphics::GlyphCache::new("./assets/fonts/FiraCode-Regular.ttf", (), opengl_graphics::TextureSettings::new()).unwrap();

    unsafe { gl::Enable(gl::TEXTURE_2D); };
    text::Text::new_color(WHITE, fontsize)
    .draw(
        "H",
        &mut glycache,
        &DrawState::default(),
        c.transform.trans(100.0, 200.0),
        pgr
    ).unwrap();
    unsafe { gl::Disable(gl::TEXTURE_2D); };
});

windowed_context.swap_buffers().unwrap();

Getting Lost in Unsafe Region snippets

Post snippet "Getting Lost in Unsafe Region snippets" on Medium

incorrect.rs

pgr.draw(viewport::Viewport {
    rect: [ 0, 0, w as i32, h as i32 ],
    draw_size: [ w as u32, h as u32 ],
    window_size: [ w.into(), h.into() ],
}, |c, pgr| {
    use graphics::*;

    let mut glycache = opengl_graphics::GlyphCache::new("./assets/fonts/FiraCode-Regular.ttf", (), opengl_graphics::TextureSettings::new()).unwrap();

    unsafe { gl::Enable(gl::TEXTURE_2D); };
    text::Text::new_color(WHITE, fontsize)
    .draw(
        "H",
        &mut glycache,
        &DrawState::default(),
        c.transform.trans(100.0, 200.0),
        pgr
    ).unwrap();
    unsafe { gl::Disable(gl::TEXTURE_2D); };
});

windowed_context.swap_buffers().unwrap();