On Thu, 2009-03-26 at 09:22 -0500, Jud Craft wrote: > No idea. Probably something to ask the freetype people, or whoever > implements the rest of the subpixel filters. > > There is someone who implemented such an idea by considering the red > and blue subpixels as dependently linked, since together red and blue > have an approximate luminance as green. It was called the SubRGB > algorithm, and there was a page with source, a library, and examples > -- but I can't find it in google. I don't believe it was ever used in > any font-rendering library, but it was suggested as a possible > non-patent infringing replacement. Note that a FreeType developer is not so convinced that SubLCD is completely in the clear: http://david.freetype.org/cleartype-patents.html
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