From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Fri, 30 Apr 2010 08:07:07 -0400 To: 9fans@9fans.net Message-ID: In-Reply-To: <9e5fc5ec-43d5-4cf3-be92-3fc8c4829ba0@l32g2000yqm.googlegroups.co> References: <7caa7a0a-fb6d-4ffa-81ef-ad3256100f2c@g21g2000yqk.googlegroups.co> <9e5fc5ec-43d5-4cf3-be92-3fc8c4829ba0@l32g2000yqm.googlegroups.co> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] ctrl radeon: not working for ATI Radeon 9600 Mobility? Topicbox-Message-UUID: 148cfddc-ead6-11e9-9d60-3106f5b1d025 > I was curious to see how performance differs from vesa. me, too. radeon performance is not good with vesa. > meanwhile, am I right if I think that the whole graphics math is done > on cpu (I mean - not on gpu), so the faster the cpu the better vesa > (and any) driver performance? cpu speed seems to have little to do with it. the main slowdown is reading from the hardware framebuffer, which plan 9 does a lot. on many modern cards there is no phsical framebuffer. it's constructed by firmware (perhaps running in smm mode on the cpu) on-the-fly. > Proprietary drivers use gpu and many > things built in the graphics controller and so they unload the cpu. > Plan 9 drivers are there to initialize and set up the device, scroll > and fill and this is, basically all, right? If this is so, the brute > force through powerful cpu + vesa is easiest solution, the way to go. i think it's mainly a question of getting the best graphics performance. but these days the 2d accelleration (especially for radeon) is fairly poor. i'd love to have my nvidia mx400 back with a pcie interface. - erik