Like the man says, if you intend on using plot in any significance, you really need to batch process your plots, so you aren't calling glBegin/glEnd all the time. Very wasteful.
WritePixel certainly executes faster, but the time taken to DrawPixmap (or LoadImage/DrawImage) might offset the speed gain some what.
In either case, like tony said, it depends a lot on what you want to do (and probably what hardware you want to do it on).
WritePixel certainly executes faster, but the time taken to DrawPixmap (or LoadImage/DrawImage) might offset the speed gain some what.
In either case, like tony said, it depends a lot on what you want to do (and probably what hardware you want to do it on).