From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Sat, 1 May 2010 10:08:12 -0400 To: 9fans@9fans.net Message-ID: <44c6dddc491d4dead1518fcd7e7de7cd@brasstown.quanstro.net> In-Reply-To: References: <7caa7a0a-fb6d-4ffa-81ef-ad3256100f2c@g21g2000yqk.googlegroups.co> <9e5fc5ec-43d5-4cf3-be92-3fc8c4829ba0@l32g2000yqm.googlegroups.co> <589116.91988.qm@web1202.biz.mail.gq1.yahoo.com> 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: 16554944-ead6-11e9-9d60-3106f5b1d025 > erik quanstrom wrote: > > 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. > > Do you happen to have any workloads where this is a problem? There is > a lot more we can do for the radeon, particularly the r100-r300 chips, > which could improve draw performance. i didn't make it clear that i'm using the vesa interface. and it's very slow for every day use with acme, but it sure displays pictures quickly. ; pci | grep vid | grep 1002 1.5.0: vid 03.00.00 1002/791e 10 0:d800000c 134217728 1:00000000 16 2:fbff0004 65536 3:00000000 16 4:0000a001 256 5:fbe00000 1048576 ; pci 1002/791e 1002/791e ATI Technologies Inc RS690 [Radeon X1200 Series] > To ask the radeon gpu to do anything interesting for you, you must > carry out a series of register writes - for example, to fill a > rectangle with a solid color, you write the rectangle's color to > DP_BRUSH_FGRD_CLR (register 0x147c), the start to DST_X_Y, and the > width and height to DST_WIDTH_HEIGHT. Everything you can ask the > radeon to do is ultimately done via register writes. i wonder if this pio doesn't explain a lot of the slowness. i would have thought that they would have used a ring. i hope you don't also pio the image data in? - erik