Get GL ES 2.0 working on emulator

[ljbade]

Me and @springmeyer can't get the app to run on the emulator due to it not providing any GL ES 2.0 configs from eglChooseConfig when using EGL_CONFORMANT = EGL_OPENGL_ES2_BIT.

I submitted it to Google to see what they say:
https://code.google.com/p/android/issues/detail?id=78977

[ljbade]

Now I get this on Android 5.0 emulator:
E/../../android/cpp/NativeMapView.cpp:128﹕ eglChooseConfig(NULL) returned error 12288

12288 is 0x3000, which is EGL_SUCCESS!

That means eglChooseConfig is returning EGL_FALSE to say it failed, but not setting the eglGetError() code to something.

Bad...

[ljbade]

OK I got it working in emulator after trying many combos.

We can't use EGL_CONFORMANT, EGL_OPENGL_ES2_BIT in eglChooseConfig, despite the fact that later on eglGetConfigAttrib tells us EGL_CONFORMANT = EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT for every config it returns!

Emulator also does not like EGL_COLOR_BUFFER_TYPE, EGL_RGB_BUFFER, setting that causes eglChooseConfig to fail.

[ljbade]

OK done 4854527