Radeon R5xx 3D programming guide released [LWN.net]

Radeon R5xx 3D programming guide released

Posted Feb 24, 2008 23:32 UTC (Sun) by beoba (guest, #16942)
In reply to: Radeon R5xx 3D programming guide released by beoba
Parent article: Radeon R5xx 3D programming guide released

Semi-answer to my own question: Found a list of supported models here. Looks like the newest thing in that list is the HD2900 series (ie no HD3xxx).

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Radeon R5xx 3D programming guide released

Posted Feb 25, 2008 4:54 UTC (Mon) by drag (subscriber, #31333) [Link]

Wikipedia has a good comparision of GPUs.
http://en.wikipedia.org/wiki/Comparison_of_ATI_Graphics_P...

It's nice to be able to tell the differences in memory bandwidth and clock speeds and other
features. It often helps when picking out cards.

A old example is the fact that for the R200 series cards the fastest one you could get was the
8500. The later ones, like the 9200, were actually designed more for cost effectiveness then
performance.

Radeon R5xx 3D programming guide released

Posted Feb 28, 2008 10:44 UTC (Thu) by wesmo (subscriber, #50706) [Link]

http://www.techarp.com/showarticle.aspx?artno=88&pgno=0

Should have all the details (clockspeed, bandwidth..) you need

Radeon R5xx 3D programming guide released

Posted Feb 25, 2008 7:49 UTC (Mon) by eru (subscriber, #2753) [Link]

From the page you linked to:(http://wiki.x.org/wiki/radeonhd#head-cc89624fd96105127892119323e209b3d80e137d)

The following subsystems have not been implemented yet or show some limitations:

No 2D and 3D acceleration so far. No XVideo (needs 3D engine for scaling). Still, fullscreen video is working fluently for many users.
No TV, Component, and HDMI connector support so far.
No Dual Link DVI support so far.
Panels only show native resolution.
No RandR rotation support so far.
Suspend & Resume is pretty much untested. Often it just works, but your mileage may vary.

In other words, currently it seems to be little more than a dumb framebuffer. Hopefully now that documents have been released, this changes for the better. I wish I could help, but I lost the track in video hardware programming about the time VGA came along...

Radeon R5xx 3D programming guide released

Posted Feb 25, 2008 8:58 UTC (Mon) by daniels (subscriber, #16193) [Link]

Yes, this is just in the radeonhd driver.  The mainline radeon driver supports textured video,
2D and some minimal Render acceleration for everything up to r5xx, as well as dual-link DVI
and scaling for LVDS.

Radeon R5xx 3D programming guide released

Posted Feb 25, 2008 9:02 UTC (Mon) by rankincj (subscriber, #4865) [Link]

Hmm, that render acceleration for the R500 only applies to EXA, doesn't it? I certainly saw no
evidence of render acceleration being enabled with XAA. (And I did check the Xorg.0.log file.)

(Oops, I meant render acceleration for R300, not R500.) (NT).

Posted Feb 25, 2008 9:04 UTC (Mon) by rankincj (subscriber, #4865) [Link]

Yup, "no text here".

Radeon R5xx 3D programming guide released

Posted Feb 26, 2008 5:16 UTC (Tue) by njs (subscriber, #40338) [Link]

All X drivers are transitioning to using EXA exclusively; the only reason I know of to stick
with XAA is if your card's EXA support is less stable than the older XAA support.

That is unlikely to be the case when using brand-new drivers for previously unsupported
hardware :-).  I'd just turn on EXA.  (And if things break, then file bugs and maybe drop back
to unaccelerated mode, I guess.)