Some Problems and Solutions encountered when using ndk for 3D effects on Android

When I honestly follow 3D practices, the 3. X and 4. x platforms are both good, with the same effect as I imagined.
2.3 there will be a layer coverage problem above. After setting the background of glsurfaceview transparent, it will be fine.
On the 2.2 page, the screen is displayed in white. I tried it, mainly because the image width and height of the texture must be 2 to the Npower.

Some engines handle this problem internally. For example, if you input a 48*59 graph, the engine will help you make it into a 64*64 graph and then only render the part of 48*59.

Supplement:

Run the 3D file written by ndk for the first time in a process.CodeThe entire screen is black for half a second, and there is no result after several days. This problem also occurs when you take out the San-* That comes with ndk. By accident, I mentioned that two colleagues said they could set a transparent topic for the application. Sure enough, the problem is solved.
1. Add a style
<Style name = "background">
<Item name = "Android: windowbackground"> @ color/transparent </item> <! -- Transparent background -->
</Style>
2. Set a topic for the activity
Android: theme = "@ style/background"