Recently presented at Linuxconf.au was Glyphy, a text renderer implemented using OpenGL ES2 shaders. Current OpenGL applications rasterize text on the CPU using Freetype or a similar library, uploading glyphs to the GPU as textures. This inherently limits quality and flexibility (e.g. rotation, perspective transforms, etc. cause the font hinting to become incorrect and you cannot perform subpixel antialiasing). Glyphy, on the other hand, uploads typeface vectors to the GPU and renders text in real time, performing perspective correct antialiasing. The presentation can be watched or downloaded on Vimeo. The slide sources are in Python, and I generated a PDF of the slides (warning: 15M due to embedded images). Source code is at Google Code (including a demo application), under the Apache License.
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