Which is better? OpenGL or X Rendering? My graphic card is AMD 780G Radeon HD3200,OpenGL doesn’t work with it for 3D,just X Rendering. 
Well OpenGL is a graphics library (API) which applications use for 3D. X was originall just 2D, and various redevelopment were required to drive the new generation of 3D hardware.
So the question doesn’t make much sense. You want both, they have their purposes, so what does it mean for one to be ‘better’ or ‘worse’?
Thank u Still lots to learn from u guys.