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[directfb-dev] Re: directfb on xscale
Sven Neumann <firstname.lastname@example.org> wrote: > Clemens Kirchgatterer <email@example.com> writes: > > > my next aproach was a basic DFB test programm, that loads 2 png > > files > > (each 256 colors without alpha, i hope) and tried to blit one as the > > screen background and the other over that background. this is > > awfully > > slow. i can follow the blitt easily with naked eye. (1 fps, i think) > > Do you render directly from the image provider to the destination > surface or do you use an offscreen surface the same pixel format than > the destination? There are quite a few things you might be doing wrong > (or rather ineffeciently), so you will have to give us some more > details. Perhaps show us some code snippets? i just made some progression. when i set the pixelformat "explicitly" to DSPF_LUT8 on the screen and the source surface, framerate suddenly raises to 42!FPS. :-) why isn't the pixelformat set corrctly for best performance? is this a bug in DFB? or a limitation of the xscale fb? best regards ... clemens -- Info: To unsubscribe send a mail to firstname.lastname@example.org with "unsubscribe directfb-dev" as subject.