title: Fast Gaussian blur at pause
body: <p>In <strong>cocos2d-x</strong> I need to implement fast gaussian blur and here is how it should looks like( I just found some game on the App Store with already done such blur, in unity):</p>
  
  <p><a href="https://i.stack.imgur.com/5wfLe.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5wfLe.gif" alt="enter image description here"></a></p>
  
  <p>So, it's nice <strong>fadeIn</strong>-<strong>fadeOut</strong> blur when user pauses the game. </p>
  
  <p>GPUImage already has a fast blur I need, but I can't find solution for cocos2d-x.</p>
  
  <ul>
  <li><p><a href="https://github.com/BradLarson/GPUImage/blob/master/framework/Source/GPUImageGaussianBlurFilter.m#L41" rel="nofollow noreferrer">v1 code when it was (GPUImage v1)</a> Objective
  C</p></li>
  <li><p><a href="https://github.com/BradLarson/GPUImage2/blob/master/framework/Source/Operations/GaussianBlur.swift#L75" rel="nofollow noreferrer">v2 code when is now
  Swift(GPUImage v2)</a> Swift</p></li>
  <li><a href="https://github.com/wangyijin/GPUImage-x/blob/master/GPUImage-x/proj.iOS/GPUImage-x/GPUImage-x/filter/GaussianBlurMonoFilter.cpp" rel="nofollow noreferrer">GPUImage-x</a> C++ version</li>
  </ul>
  
  <p><a href="https://media.giphy.com/media/3ov9jUMsVIpukMwvFm/giphy.gif" rel="nofollow noreferrer">Here is result of live camera view using GPUImage2</a> - tested on iPod Touch 5G, and it works fast on this slow and old device. </p>
  
  <p>Blur in GPUImage works very fast even on very slow devices like iPod Touch 5G.<br>
  Looking for solution with super fast Gaussian blur for cocos2d-x. </p>