Re: [ PATCH-LINK ] fb accel capabilities - take 2
From: Antonino A. Daplas <hidden>
Date: 2004-05-28 07:42:28
On Friday 28 May 2004 11:38, David Eger wrote:
Thomas Winischhofer eloquently put:quoted
David Eger wrote:
It's all part of fixing bugs ;-) When my "accelerated" fb driver is still super-slow, i consider that a bug. And it's a bug of the framebuffer subsystem, not really of the drivers. Your lovely
There is also another cause for the slowdown. Although 2.6 fbcon is slightly faster than 2.4 fbcon (not considering other variables such as panning), the speed can be increased further more (around 30-50%). This is mainly due to the use of sys_inbuf and sys_outbuf, which are used a lot, for transferring data from the pixmap when creating the monochrome bitmap (for use by xxx_imageblit). I guess we just need to use standard memcopy (or similar), possibly inlined, if the pixmap is in system RAM, and only use sys_inbuf and sys_outbuf when the pixmap is in video/DMA/etc memory. Tony ------------------------------------------------------- This SF.Net email is sponsored by: Oracle 10g Get certified on the hottest thing ever to hit the market... Oracle 10g. Take an Oracle 10g class now, and we'll give you the exam FREE. http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click