throttle proxied frames

1 files changed, 4 insertions, 1 deletions

diff --git a/src/webGLWorker.js b/src/webGLWorker.js
index 37b844b6..4ccc8d55 100644
--- a/src/webGLWorker.js
+++ b/src/webGLWorker.js
@@ -609,7 +609,10 @@ function WebGLWorker() {
   Module['postMainLoop'] = function() {
     if (postMainLoop) postMainLoop();
     // frame complete, send the command buffer
-    postMessage({ target: 'gl', op: 'render', commandBuffer: commandBuffer });
+    if (Math.abs(frameId - clientFrameId) <= 3) {
+      // only send if not throttling
+      postMessage({ target: 'gl', op: 'render', commandBuffer: commandBuffer });
+    }
     commandBuffer = [];
   };
 }