From: Jacopo G. <sbr...@fa...> - 2004-03-30 20:34:00
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Alex Deucher ha scritto: >Based on some research and feedback I've gotten, I've re-structured the >GBD, COB, and streams code. I put together a document based on my >findings here: >http://www.botchco.com/alex/savage/Savage_Guide.txt > >I've tested on savage4 and savage IX, and all seems well. I'd like to >get more feedback from savage3D, twister, non-DDR prosavage, and >savage2000 users. I haven't gotten any feedback from savage3d users at >all yet, although, I doubt there are many as I don't think S3 released >many savage3D chips. I originally assumed twister worked like >prosavage/DDR, but it seems to be more like savage4. this is backed up >by some info on via's website (see the savage guide above) and feedback >from some users. I don't think we've gotten any testers yet on non-DDR >prosavage, so I'd like to get some feedback on that as well. Also, I >think DDR, Prosavage, and 2000 share the same 2d engine and possibly >streams, I'd like to get some feedback from savage2000 users to make >sure tiled mode and 2d (and possibly streams) works with the dri savage >driver. Savage2000 users, please try both tiled and linear mode >(option "disabletile"). Unfortunately, there is no 3D support for >savage2000 yet and it won't happen until S3 releases some code or a >databook. > >Issues: > >1. Cursor corruption. The cobIndex bitfield of register 48C14 seems to >vary between series and revisions of twister/prosavage/savage4/2000. if >you are getting hardware cursor corruption, try the "disablecob" option >to disable it. alternatively, you can try setting psav->cobIndex to 7 >from 2 or vice versa in savage_driver.c. unfortunately, I don't know >which revisions use which bitfield layout. Twisters and early revision >savage4 chips seem to use 7, while supersavage, newer savage4 and DDR >chips seem to use 2. > >2. Scrambled 3D window. This is due to variations in the bitmap >descriptor layout between chips. The two important fields seem to be >the tile format field and the bci enable bit. I haven't sorted all of >these out yet. savage4 and twister seem to be the same and prosavages, >DDRs, and 2000 seem to be the same, but there may be further variation. > >Tim, regarding 1 and 2, do you have any idea which chips use which >layout, and also how we can find out the chip revisions so we can set >this properly? > >My patch is against the savage driver in DRI cvs. See this page for >more on how to download and build cvs: >http://dri.sourceforge.net/cgi-bin/moin.cgi/Building >I've attached my patch and it's also available here: >http://www.botchco.com/alex/savage/core-rework/core-rework.diff >I've also created a binary (build on redhat9) for those that want to >try: >http://www.botchco.com/alex/savage/core-rework/savage_drv.o > >Please send feedback to myself and dri-devel. > >Thanks, > >Alex > > >__________________________________ >Do you Yahoo!? >Yahoo! Finance Tax Center - File online. File on time. >http://taxes.yahoo.com/filing.html > Just tried the binary on my twister-k with mandrake 9.2 and kernel 2.6.4 (vanilla). It loads an unusable X with weird colors and slooooow mouse that crashes just after loading KDE. |