Quadratic shape rendering with the GPU .
Based on this excellent paper http.developer.nvidia.com/GPUGems3/gpugems3_ch25.html

The main difference are : Instead of computing Cubic coefficient I convert the curve into Quadratic segment ( the upper middle ‘e’ in the video )
And the AntiAliasing is all computed in the shader without any MSAA because I compute the thin layer of 1 pixel wide around shape edges.