Unity-5.x : low level rendering plugin (opengles 2.0) no longer works on iOS

Unity Engine
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Hi there,
the low level native rendering plugin (found here Unity - Manual: Low-level native plug-in interface) no longer works on iOS since updated to Unity 5.x : it simply draws nothing on iOS (works fine on android though).
i traced the program, it looks all the exported functions are correct and excutes, but nothing drawn on screen.

to verify the problem, i re-compiled the project with Unity 4.6.4, and everything works as expected, so i am pretty sure its something about unity 5.x, any ideas?

Thank you.

Update :

  1. It’s a problem of Unity 5.1.2, because other version (at lease 5.0.1 and 4.6.4 are fine)
  2. Both Android and iOS wont draw any thing as long as built with 5.1.2
  3. Built with option ‘OpenGLES 2.0’ only (no Metal or whatever)
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it’s disgusting that they never fixed or indeed did the iOS version. it is possible - we finally worked it out (2019) with vast effort

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