test.rs

fn test_opengl_versions(video: &sdl2::VideoSubsystem) {
    let major_versions = [3u8, 2u8, 1u8];
    let minor_versions = [3u8, 2u8, 1u8, 0u8];
    for major in &major_versions {
        for minor in &minor_versions {
            let gl = video.gl_attr();
            gl.set_context_version(*major, *minor);
            // gl.set_context_profile(sdl2::video::GLProfile::Core);

            print!("Requesting GL {}.{}... ", major, minor);
            let window_builder = video.window("so full of hate", 640, 480);
            let result = gfx_window_sdl::init::<ColorFormat, DepthFormat>(window_builder);
            match result {
                Ok(_) => {
                    println!("Ok, got GL {}.{}.",
                             gl.context_major_version(),
                             gl.context_minor_version())
                }
                Err(res) => println!("Request failed: {:?}", res),
            }
        }
    }
}