[behdad]

Thank you for the question. Rasterization is not my specialty. There definitely is still immense amount of research going into rasterizing fonts and 2D graphics on the GPU efficiently. Here's the latest from Raph Levien's research for example:

  https://www.youtube.com/watch?v=_sv8K190Zps

[wiz21c]

Thanks, so that video (wasn't much impressed, just some "tile compression").

My question was more about the quality of the rendering (or other challenges) than about the speed of rendering.