On 12 Feb 2013, at 21:15, Robert Vogel wrote:
> Originally the UI was generated using Fluid, > but lately I have been hand-coding it. > Just to be sure there is no misunderstanding > the formerly generated code is now an > element called NotGenerated.cxx. It contains > a small routine, LightIt, which colors > the bars when sequencing and scrolls. > The last line of LightIt is a redraw statement. > If I comment it our in Fedora, timing recovers. > > I use the same 64 bit machine for both U12.4 and F17. > So, here's the question: What's the difference > between Ubuntu and Fedora that could cause this ? Hard to say: there is *nothing* in the fltk lib that knows about different Linux distro's, so we don't do anything different for Ubuntu vs Fedora. Or any other linux for that matter... Hmm, OK, I just tried a run on a VM here; Ubuntu 12.10 32-bit vs F17 32-bit, with some rendering tests I had. No idea how representative that will be of your usage, mind you... Didn't really see much, if any, difference in the numbers - both came out about the same in every test. In my GL frame test the Ubuntu box came in at 152 fps, the F17 was at 149, but other tests I couldn't say I saw any difference that was not just noise. Ah, now, here's a thought - What graphics card are you using? Ubuntu quite often will install the vendor supplied (non-free) binary drivers, whereas F17 will not (unless you force it to) and that can make a *substantial* difference to rendering. In particular if you have a Nvidia card, the vendor binary driver is *much* faster than the nv/nouveau free drivers; in one test I did recently the nv driver managed 18 fps, the nvidia driver was over 500 fps. Running *the same* executable. That sort of delta might make a difference! _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
