-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello,
we ( that's NetBSD ) are in the process of updating our in-tree Xserver from Xorg 1.4.2 to 1.6.* - I noticed some problems when porting my driver for the SGI O2's rendering engine: - - anti-aliased font rendering performance went down the drain. In 1.4.2 I got >160000 characters per second in x11perf -aa10text, now it's down to a mere 8000, just about what I'd expect with pure software rendering. It still goes through the hardware-accelerated composite functions though. What changed here? Also, drawing non-anti- aliased text is not affected, it's still going at about 400000/s. - - horizontal and vertical lines all of sudden fall back to software instead of using the hardware-accelerated functions. I have no idea why, other lines and other rectangle fills work just as before. The driver uses XAA and we don't have a linear framebuffer which is why falling back to software rendering isn't only slow, it gives completely wrong results. The driver uses its own Composite() handler instead of XAA's in order to catch all whatever-to-vram composite operations - CRIME can accelerate them all and fallback to software has to be prevented. Going through the changes in XAA didn't yield anything that looks related. Any ideas? Somehow I don't think any of this has much to do with the driver or the underlying hardware. have fun Michael -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iQEVAwUBSkumzcpnzkX8Yg2nAQK+Qgf/a2ur7PKDbF84f3p46X/PGCVC+cMXbvpy jA89a/bEnoz1x3INExeLJ3ieFOWqF8n0ojB14cvIdHB1kjOnWhST1cwUtoWdhbXu wFunpO7RF2It60Ol+/+QeZ5RfvHyB1NavskwawkyXGEugXkmm20+MnRqzYZVjp9i zZ87MXlvNGizL01cpDxZ5BFgfZ+vFC9nobY3q6+g2r7yiBDu1h3/Yc5JpRA3iCX0 72tqNosUB3FSJUyAoT2yijGs7PConXz9qUYqcgG+9HBa/OVQjlBPtPbHNuJS6J+e 0qQrBFi4AU9oJwxW1CoO/3TtyQgEBxli1q+1pyNcIvq6CLyDY05AAQ== =3n47 -----END PGP SIGNATURE----- _______________________________________________ xorg-devel mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-devel
