I'm investigating the way to draw bezier curves / nurbs etc. with shaders, here is a list a links and information I found that can improve render times with OF. Any way I must admit I'm new to openGL & shaders so maybe someone can take this to implement maybe an add-on or maybe to added to the core.
Resolution Independent Curve Rendering using Programmable Graphics Hardware https://www.microsoft.com/en-us/research/wp-content/uploads/2005/01/p1000-loop.pdf
Resolution independent GPU accelerated Curve & Font rendering GPU based Resolution Independent Font & Curve Rendering – initial Release http://jausoft.com/blog/2011/04/01/resolution-independent-gpu-accelerated-curve-font-rendering/ http://ramisantina.com/blog/?p=73 http://vimeo.com/21810192