Denis Oliver Kropp wrote: > Ben Combee wrote: >> On 8/25/07, Phil Endecott <[EMAIL PROTECTED]> wrote: >>> Great! Just one question about the hardware - does it do stretch-blits? >> >> The hardware does do stretch-blits, but only for powers-of-two. We >> worked on using the hardware for other stretches, but there were >> problems with artifacts at the edges of surfaces that we couldn't >> resolve. > > I think it supports NPOT, but the precision of the scaling factor > is too poor (5 fractional bits).
OK, so you can scale in two steps via an intermediate image, as long as your scale factor factorises into (n/32)*(m/32).... > Clipping is also a bit broken in HW. > > This is with the 2D core. We haven't started using the 3D core directly. OK, that's hopeful. IIRC my VIA driver is using the 3D core for stretch-blits. Cheers, Phil. _______________________________________________ directfb-users mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
