From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <589116.91988.qm@web1202.biz.mail.gq1.yahoo.com> References: <7caa7a0a-fb6d-4ffa-81ef-ad3256100f2c@g21g2000yqk.googlegroups.co> <9e5fc5ec-43d5-4cf3-be92-3fc8c4829ba0@l32g2000yqm.googlegroups.co> Date: Fri, 30 Apr 2010 05:30:15 -0700 From: =?iso-8859-1?Q?Gabriel_D=EDaz?= To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: [9fans] ctrl radeon: not working for ATI Radeon 9600 Mobility? Topicbox-Message-UUID: 14a26c94-ead6-11e9-9d60-3106f5b1d025 hello=0A=0A=0AVesa code has some problems to deal with ati hd5750 cards her= e. Themouse cursor disappear when a lot of scrolling is happening, vesa is= unable to drive the card beyond 8bit depth modes or 1280x1024 resolutions.= Besides that, the performance i see is almost the same i had with the rade= on driver and the 9500 i had in the thinkpad, or the intel driver (given th= at my stress test is reading man pages and watching flickr photos. . . .)= =0A=0AI guess the radeon driver is unable to work with modern ati cards no?= =0A=0AI would love a book recommendation to learn something about graphics = programming, so at least i can guess what or where to look to try to debug = the problem.=0A=0Aslds.=0A=0Agabi=0A=0A=0A=0A----- Original Message ----=0A= From: erik quanstrom =0ATo: 9fans@9fans.net=0ASent: = Fri, April 30, 2010 2:07:07 PM=0ASubject: Re: [9fans] ctrl radeon: not work= ing for ATI Radeon 9600 Mobility?=0A=0A> I was curious to see how performan= ce differs from vesa.=0A=0Ame, too. radeon performance is not good with ve= sa.=0A=0A> meanwhile, am I right if I think that the whole graphics math is= done=0A> on cpu (I mean - not on gpu), so the faster the cpu the better ve= sa=0A> (and any) driver performance?=0A=0Acpu speed seems to have little to= do with it. the main slowdown=0Ais reading from the hardware framebuffer,= which plan 9 does a lot.=0Aon many modern cards there is no phsical frameb= uffer. it's=0Aconstructed by firmware (perhaps running in smm mode on the= =0Acpu) on-the-fly.=0A=0A> Proprietary drivers use gpu and many=0A> things = built in the graphics controller and so they unload the cpu.=0A> Plan 9 dri= vers are there to initialize and set up the device, scroll=0A> and fill and= this is, basically all, right? If this is so, the brute=0A> force through = powerful cpu + vesa is easiest solution, the way to go.=0A=0Ai think it's m= ainly a question of getting the best graphics=0Aperformance. but these day= s the 2d accelleration (especially=0Afor radeon) is fairly poor. i'd love = to have my nvidia mx400=0Aback with a pcie interface.=0A=0A- erik