diff --git a/src/main.zig b/src/main.zig
index 09cec01..9c3f8e8 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -108,16 +108,23 @@ export fn init() void {
     };
 
     std.log.info("Backend: {}\n", .{sg.queryBackend()});
+
+    sokol.app.showMouse(false);
 }
 
 fn timef() f32 {
     return @floatCast(sokol.time.sec(sokol.time.now()));
 }
 
+var time: f32 = 0;
+
 export fn frame() void {
+    const dt: f32 = @floatCast(sokol.app.frameDuration());
+    time += dt;
+
     const col = &pass_action.colors[0].clear_value;
-    col.g = @abs(@sin(timef()));
-    col.r = @abs(@cos(timef()));
+    col.g = @abs(@sin(time));
+    col.r = @abs(@cos(time));
 
     state.vsParams.aspectRatio = sokol.app.heightf() / sokol.app.widthf();