[メモこぴぺ]
http://www.das-werkstatt.com/forum/werkstatt/viewtopic.php?f=7&t=2105
http://wings2fly.jp/yaneura/raspberry-pi-performance-up/
http://stackoverflow.com/questions/14769107/libusb-bulk-transfer
http://wili.cc/blog/opengl-cs.html
http://ce-publications.et.tudelft.nl/publications/1362_hardware_algorithms_for_tilebased_realtime_rendering.pdf