a1d57dba87
Some GL implementations do not provide GL_EXT_read_format_bgra extension. Set a glReadPixels format based on whether the extensions is supported or not, and use that format in all backends. Add RGBA->BGRA swapping copy to screenshooter to keep the shm buffer data format as BGRA. Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>