20 Nov 2003 anholt   » (Master)

kdrive:
More work on Xati. Added the Rage 128 PCI IDs. Fixed 24-bit accel, using a cute hack (the cards don't support acceleration for 24bpp, so you put the accelerator in 8-bit mode and multiply). Got offscreen pixmaps working, improving performance. There seems to be some bug with composite, though, which I've reproduced with Xvesa. Not sure if it's xcompmgr's fault or the server's, but in some cases things don't get redrawn when dragging a window back in from offscreen. Seen some resizing issues, too. However, dragging xterms over the top of a mozilla is beautiful -- no flicker while the window underneath refreshes. I can't wait to see what things are like when we get render accel.

Issues that I know of with it, hmm. Radeon with acceleration and 1400x1050 mode doesn't work right because of limitations in pitch -- we need to do our own mode setup (hopefully we can figure out how to do that in a clean manner) or use radeonfb for that. Lacks render accel (need help from keithp for infrastructure). Lacks xv (needs to be done using 3d hardware instead of overlay). Hardware cursor not supported (insignificant, at least with standard X cursors). Doesn't use the DRM. The DRM is my next task, fixing up that poor r128drm code I had done to be used with Xati. I have this hope, and I think it's pretty realistic, that a lot of code can be shared between r128_dri.c and radeon_dri.c, so I can have a single ati_dri.c.

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