Step 3

apps/LoopThroughWithOpenGLCompositing/gl/OpenGLComposite.cpp

@@ -257,7 +257,14 @@ bool OpenGLComposite::InitOpenGLState()
 
 bool OpenGLComposite::Start()
 {
-	return mVideoBackend->Start();
+	if (!mRenderEngine->StartRenderThread())
+		return false;
+
+	if (mVideoBackend->Start())
+		return true;
+
+	mRenderEngine->StopRenderThread();
+	return false;
 }
 
 bool OpenGLComposite::Stop()
@@ -272,6 +279,9 @@ bool OpenGLComposite::Stop()
 			mRuntimeStore && mRuntimeStore->IsExternalKeyingConfigured(),
 			"External keying has been disabled.");
 
+	if (mRenderEngine)
+		mRenderEngine->StopRenderThread();
+
 	return true;
 }