mgba: tentative fix for unlimited fps (#30)

gbdev · Dec 10, 2024 · 362ec8b · 362ec8b
1 parent 284ddf1
commit 362ec8b
Showing 1 changed file with 11 additions and 5 deletions.
diff --git a/mgba.js b/mgba.js
@@ -5542,12 +5542,18 @@ var mGBA = (function () {
         setTimeout(func, delay);
       },
       requestAnimationFrame: function (func) {
-        if (typeof requestAnimationFrame === "function") {
-          requestAnimationFrame(func);
-          return;
+        if (typeof requestAnimationFrame === "function") {          
+          var now = Date.now();
+          if (Browser.nextRAF === 0) {
+            Browser.nextRAF = now + 1e3 / 60;
+          } else {
+            while (now + 2 >= Browser.nextRAF) {
+              Browser.nextRAF += 1e3 / 60;
+            }
+          }
+          var delay = Math.max(Browser.nextRAF - now, 0);
+          setTimeout(func, delay);
         }
-        var RAF = Browser.fakeRequestAnimationFrame;
-        RAF(func);
       },
       safeCallback: function (func) {
         return function () {