Hi; On 10/28/05, Clemens Eisserer <[EMAIL PROTECTED]> wrote: > > I wonder why the API should make such a bit difference - I am quite > sure that cpu/memory throughput is far more a problem. The ARM9 in tne > 770 is quite a bit, well, turkey ... and to fill a 100x100 shape which > is quite a bit more complex than a rectangle needs many million > cylcles.
An FP API will make a difference if your calling it thousands of times ( i.e in an animation ). Of course this is only one factor as I previously mentioned but believe me FP operations really hurt on hardfloat ARM - a simple timed test of adding ints vs floats will prove this. > You can see this when benchmarking the X11 implementation of the > device - quite nice but to fill a larger pixmap with a color takes > ages of course. > I depends on *how* you paint that pixmap of course. Using a 'core' X fillrect should be pretty fast. Doing the same thing via cairo is going to be slower - it offers much more feature wise that 'core' X cannot do and as not yet fully optimised basic operations may not be 'fast pathed'. -- Matthew _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
