Freetype patent problem.

[Kouta Ikematsu]

I think that freetype is non-free, It is patent problem.

Package: freetype (affected Ubuntu and Ubuntu derived OS)

Patent: ClearType Patent (Subpixel Rendering)

See: 

http://david.freetype.org/cleartype-patents.html
https://en.wikipedia.org/wiki/Subpixel_rendering#Patents
http://www.freetype.org/patents.html


Workaround:

1. Disable subpixel rendering. (It is default)
2. Use SubLCD. (http://www.oyhus.no/SubLCD.html)


Affected Source:

ftoption.h (included source file)



Reference:

http://www.freetype.org/freetype2/docs/reference/ft2-lcd_filtering.html

Thanks.