rvgl on pi

sending incremental file list
./

sent 6,553 bytes  received 122 bytes  13,350.00 bytes/sec
total size is 25,369,688  speedup is 3,800.70
LIBGL: Initialising gl4es
LIBGL: Batch mode enabled
LIBGL: v0.9.4 built on Feb 20 2017 00:06:52
LIBGL:loaded: libbcm_host.so
LIBGL:loaded: libvcos.so
LIBGL:loaded: /opt/vc/lib/libGLESv1_CM.so
LIBGL:loaded: libEGL.so
LIBGL: Extension GL_OES_framebuffer_object detected and used
LIBGL: Extension GL_OES_depth24 detected and used
LIBGL: Extension GL_OES_rgb8_rgba8 detected and used
LIBGL: Extension GL_EXT_texture_format_BGRA8888 detected and used
LIBGL: Max texture size: 2048
LIBGL: Texture Units: 4, Max lights: 8
LIBGL: Implementation Read is GL_RGBA/GL_UNSIGNED_BYTE
LIBGL: glGetError() always return GL_NOERROR
LIBGL: Current folder is:/home/pi/.rvgl
glXGetProcAddress: glXGetSwapIntervalMESA not found.
glXGetProcAddress: glXGetSwapIntervalMESA not found.