jME 3.10.0-alpha5

Try to set the environment variable ANGLE_DEFAULT_PLATFORM=vulkan before launching the app, I suspect calling

SDLStdinc.SDL_setenv_unsafe

from within the app is too late for it to take full effect (it needs to be set before sdl calls).

By the way, I can also change the default platform for windows in our angle build if there is a reason to use vulkan instead of directx11.