On 04/20/2012 12:31 AM, Werner LEMBERG wrote: > >> It competes with freetype-gl really. It's a GPU rasterizer. The >> main different with freetype-gl is that I don't do any sampling, so >> the glyphs are truly infinitely zoomable. > > Nice! No time to look at it more closely, but I've recently skimmed > over a paper which uses wavelet transformation to achieve something > similar
Yes, I saw that exchange, but have not read it yet. > (the paper was mentioned on this list a few days ago). Maybe > you are something into this direction also? Not really, for this I just wanted to avoid signal processing by all means :). Essentially, it's a generic SDF rasterizer, like freetype-gl is, but instead of using a 2D sample to represent the SDF, we use circular-arc splines. So, essentially, what GLyphy does is: - Convert glyph outlines to bunch of circular arcs, - Build a datastructure to make it fast finding which arc is closest given a point, - Upload these all to the GPU, do the math in the fragment shader. The devil is in the corner cases of course. And in making it fast. behdad > Werner > _______________________________________________ Freetype-devel mailing list Freetype-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/freetype-devel
