Fixed issues with old GL versions ( <= 2.1 )

examples/modern_art/Cargo.toml

@@ -8,3 +8,4 @@ publish = false
 [dependencies]
 iced = { path = "../..", features = ["canvas", "tokio", "debug"] }
 rand = "0.8.5"
+env_logger = "0.9"

examples/modern_art/src/main.rs

@@ -9,6 +9,8 @@ use iced::{
 use rand::{thread_rng, Rng};
 
 fn main() -> iced::Result {
+    env_logger::builder().format_timestamp(None).init();
+
     ModernArt::run(Settings {
         antialiasing: true,
         ..Settings::default()