Unity export with transparent background

Thanks to someone who comment in the last post at: http://www.geekyhamster.com/2013/12/unityplayer-as-subview-with-transparent.html#comment-form_2814123588175991591

I tried it and it works nicely..

1. In Unity, MainCamera ClearFlags set to solid color with alpha = 0

2. Export to iOS

3. In Xcode classes folder, search for 2 files :

a - GlesHelper.mm in CreateSystemRenderingSurfaceGLES method - Add this line:-

 surface->layer.opaque = NO;

b - MetalHelper.mm in CreateSystemRenderingSurfaceMTL method - Add these lines:-

 surface->layer.opaque = NO;
 CGFloat backgroundColor[] = {0,0,0,0};

ta-dah~~ transparent background. Tested on Unity version 5.2.3f