+use mandelwow_lib::*;
+
+#[cfg(target_os = "emscripten")]
+use std::os::raw::{c_int, c_void};
+
+fn screenshot(display : &glium::Display) {
+ let image: glium::texture::RawImage2d<u8> = display.read_front_buffer();
+ let image = image::ImageBuffer::from_raw(image.width, image.height, image.data.into_owned()).unwrap();
+ let image = image::DynamicImage::ImageRgba8(image).flipv();
+ let mut output = std::fs::File::create(&std::path::Path::new("screenshot.png")).unwrap();
+ image.save(&mut output, image::ImageFormat::PNG).unwrap();
+}
+
+fn gl_info(display : &glium::Display) {
+ let version = *display.get_opengl_version();
+ let api = match version {
+ glium::Version(glium::Api::Gl, _, _) => "OpenGL",
+ glium::Version(glium::Api::GlEs, _, _) => "OpenGL ES"
+ };
+ println!("{} context verson: {}", api, display.get_opengl_version_string());
+}
+
+#[cfg(target_os = "emscripten")]
+#[allow(non_camel_case_types)]
+type em_callback_func = unsafe extern fn();
+#[cfg(target_os = "emscripten")]
+extern {
+ fn emscripten_set_main_loop(func : em_callback_func, fps : c_int, simulate_infinite_loop : c_int);
+}
+
+#[cfg(target_os = "emscripten")]
+thread_local!(static MAIN_LOOP_CALLBACK: std::cell::RefCell<*mut c_void> =
+ std::cell::RefCell::new(std::ptr::null_mut()));