From 8916569f7c1468f53a4385d87d5e59b2958a6901 Mon Sep 17 00:00:00 2001
From: rachytski <siarhei.rachytski@gmail.com>
Date: Thu, 1 Nov 2012 19:01:39 +0300
Subject: [PATCH] this fixes "GPU Wait On Buffer" issue found in Xcode
 Instruments - OpenGL ES Analyzer.

---
 yg/buffer_object.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/yg/buffer_object.cpp b/yg/buffer_object.cpp
index 3a14709822..be9143fd52 100644
--- a/yg/buffer_object.cpp
+++ b/yg/buffer_object.cpp
@@ -46,7 +46,14 @@ namespace yg
         m_size = size;
         makeCurrent();
         if (g_isBufferObjectsSupported)
+        {
           OGLCHECK(glBufferDataFn(m_target, m_size, 0, GL_DYNAMIC_DRAW));
+          /// In multithreaded resource usage scenarios the suggested way to see
+          /// resource update made in one thread to the another thread is
+          /// to call the glFlush in thread, which modifies resource and then rebind
+          /// resource in another threads that is using this resource, if any.
+          OGLCHECK(glFlush());
+        }
       }
     }