Am Montag, 6. Dezember 2004 22:32 schrieb Roland Scheidegger: > Dieter Nützel wrote: > > Am Samstag, 4. Dezember 2004 00:47 schrieb Roland Scheidegger: > >> Here's the new patch version (finally...). > > > > Works so far on r200 here, too;-) > > > >> - when only stencil (or only z) buffer is cleared in a visual which > >> supports stencil and z, now a proper fallback clear is used (still > >> with z-buffer compression, but not with fast z-clear - I believe > >> this is a hardware limitation, or if it isn't a hardware limitation > >> I don't know how to do it...). The algorithm which decides if a > >> fallback clear is requried isn't very sophisticated though, so if > >> an app uses a visual with stencil but never uses the stencil it > >> will always use fallback clears. You can see that with QuakeIII, if > >> you do r_stencilbits 8 but leave cg_shadows at 1, quake3 will > >> never write to stencil nor clear it, which causes clear fallbacks. > > > > I'm running with both and your fix [Bug 2010] but can't see any > > problems with q3a. > > Well, you should not SEE anything - the clear fallback should just cause > (and that indeed happens) a performance loss, but no visual anomalies.
OK. > >> The code required to avoid fallbacks in such cases wouldn't be that > >> complicated, but kludgy (it would not only be necessary to > >> remember if stencil has been written or not, but also the last the > >> last clear values had to be remembered and such). The fallback > >> clears fix DoomIII and NWN errors. > > > > True for DoomIII, but who can switch the lights ON, finally...? ;-) > > That is some weird texcoord problem. (I actually have a one-line > workaround for that, which breaks submitting texgen and non-texgen > coordinates at the same time more or less completely). Let me test. > > Your older version (with my little changes) was much more 'robust' > > with multiple apps and/or 'zooming' a 3D app (e.g. with VTK). > > > > 'Zooming' a 3D VTK prog from the upper left corner into a bigger > > window in the desktop middle show missing z/buffer clearing/redraw. > > > > Was OK before. > > Hmm, do you have a screenshot of that (or preferably more than one, I'm > interested what happens when you move the window from top-left to > top-right, bottom-left and bottom-right)? No zoom, then nothing. After zoom only the lower, left part of the window would be redrawn right. In all places. See our domain ;-) http://www.nuetzel-hh.de/public > Basically, this shouldn't be different than when you just changed the > clear mask with the old patch. > (Except when you're trying to use hier-z, then the results will be > different - I also believe that the new drm and dri hyperz patches are > not compatible to the old ones, you need to update both since I changed > some bit in the ioctl.) I'm running with both new. > >> Private z buffers might not help neither for that problem. It would > >> help for the z buffer compression issue (each application could > >> use it or not without causing problems), but fast z clear would > >> still not work correctly. I've not implemented anything though with > >> regards to multiple apps. glxgears and quake3 seemed to run quite > >> happily together though (on a rv250). > > > > Should I play with the clearmask, again? > > No, not unless you're serious about implementing a real hierarchical-z > solution. Maybe I'm somewhat unclear, here. I mean this one: --- radeon_state.c.orig 2004-11-11 22:08:37.000000000 +0100 +++ radeon_state.c.aktuell 2004-11-13 14:08:32.000000000 +0100 @@ -894,7 +894,8 @@ } else { /* FIXME : reverse engineer that for Rx00 cards */ - clearmask = (0xff<<22)|(0xff<<6)| 0x003f003f; + /* clearmask = (0xff<<22)|(0xff<<6)| 0x003f003f; */ + clearmask = 0x0; > > [Bug 2010] New: depth and stencil readback are broken beyond x > > > 1023 Fix do not show any changes. zreaddraw is corrupted even with > > screen redraw. > > Do you mean with hyperz? Of course ;-) > That's to be expected (at least for now). That > bug 2010 depth readback problem is meant for cases without hyperz. I see. > > Have a look into SPECViewperf 7.1.2/8.0.1 _ugs_, too. Depth is mostly > > broken there, too. > > Works perfect (though slow as always...) for me (7.1). Screenshot? With and without hyperz. (maybe unrelated). Depth and clear (?) is broken. http://www.nuetzel-hh.de/public/ugs02QualityFull.png http://www.nuetzel-hh.de/public/ugs03Full.png E.g. depth would be wrapped on 'big' desktops (1280x1024x24/32). http://www.nuetzel-hh.de/public/ugs06Full-depth.png With viewperf-smp I get mostly empty/black windows with ugsXXX. I hope someone get it. Cheers, Dieter ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
