diff --git a/src/animations.rs b/src/animations.rs
index ba687d8..78c1f93 100644
--- a/src/animations.rs
+++ b/src/animations.rs
@@ -37,7 +37,9 @@ impl<T: Surface> IdleTask<T> {
 }
 
 impl<T: Surface> Task for IdleTask<T> {
-    fn name(&self) -> &'static str { "Idle" }
+    fn start(&mut self) {
+        self.surface.set_shader(Box::new(IdleShader { frame: self.frame }));
+    }
 
     fn tick(&mut self) {
         self.updater.run(|| {
@@ -114,7 +116,9 @@ impl<T: Surface> TestPattern<T> {
 }
 
 impl<T: Surface> Task for TestPattern<T> {
-    fn name(&self) -> &'static str { "Idle" }
+    fn start(&mut self) {
+        self.surface.set_shader(Box::new(TestShader { pattern: self.pattern }));
+    }
 
     fn tick(&mut self) {
         self.updater.run(|| {