OpenGLES constructor
Implementation
OpenGLES(Map<String, dynamic> options) : super(options) {
final DynamicLibrary? libEGL = getEglLibrary();
final DynamicLibrary? libGLESv3 = getGLLibrary();
_libOpenGLES = LibOpenGLES(libGLESv3!);
_libEGL = LibEGL(libEGL!);
}