From: Jon Smirl <jonsmirl@gmail.com>
To: linux-fbdev-devel@lists.sourceforge.net
Subject: Re: framebuffer ioctl
Date: Tue, 7 Sep 2004 10:17:39 -0400 [thread overview]
Message-ID: <9e47339104090707172cdc258d@mail.gmail.com> (raw)
In-Reply-To: <1094505860.31465.211.camel@admin.tel.thor.asgaard.local>
The numbers compare two peices of software that exist. Sure you could
probably write a super optimized library for CPU based drawing in 2D
mode that would be faster, but this library doesn't exist. No matter
what you do using the GPU to draw is always going to beat using the
CPU by a wide margin because of the memory bandwidth difference.
Would Cairo on hardware OpenGL vs Cairo on software only OpenGL be a
better comparison? Those ratios are even worse.
Why does everyone want to write another accelerated drawing library
when we already have a really good one that follows standards and has
excellent documentaition? Why not help integrate DRM and fbdev
instead.
On Mon, 06 Sep 2004 17:24:20 -0400, Michel Dänzer <michel@daenzer.net> wrote:
> On Mon, 2004-09-06 at 17:02 -0400, Jon Smirl wrote:
> >
> > Check out the Cairo benchmarks. The OpenGL drivers can beat the
> > performance of 2D drivers 100:1 and some cases 400:1. OpenGL uses the
> > GPU to do the drawing instead of the main CPU.
>
> Please stop reiterating these bogus (optimized OpenGL vs. unoptimized
> software-rendered Render extension) numbers, unless you think bogus
> numbers are a good way to make a point.
>
> --
> Earthling Michel Dänzer | Debian (powerpc), X and DRI developer
> Libre software enthusiast | http://svcs.affero.net/rm.php?r=daenzer
>
>
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--
Jon Smirl
jonsmirl@gmail.com
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next prev parent reply other threads:[~2004-09-07 14:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-04 11:04 framebuffer ioctl (fwd) Geert Uytterhoeven
2004-09-04 21:44 ` Otto Wyss
2004-09-05 17:13 ` framebuffer ioctl Zack
2004-09-06 1:33 ` Antonino A. Daplas
2004-09-06 15:36 ` Otto Wyss
2004-09-06 21:21 ` Antonino A. Daplas
2004-09-06 21:58 ` Zack
2004-09-06 23:05 ` Antonino A. Daplas
2004-09-06 19:56 ` Zack
2004-09-06 21:02 ` Jon Smirl
2004-09-06 21:11 ` [OT] " Otto Solares
2004-09-06 21:39 ` Jon Smirl
2004-09-07 0:01 ` Otto Solares
2004-09-07 0:11 ` Jon Smirl
2004-09-06 21:24 ` Michel Dänzer
2004-09-07 14:17 ` Jon Smirl [this message]
2004-09-07 14:26 ` Geert Uytterhoeven
2004-09-07 14:38 ` Jon Smirl
2004-09-07 15:58 ` Otto Wyss
2004-09-07 14:45 ` Jon Smirl
2004-09-07 15:52 ` Michel Dänzer
2004-09-08 5:43 ` Jon Smirl
2004-09-08 13:59 ` Ville Syrjälä
2004-09-08 22:47 ` Jon Smirl
2004-09-13 15:54 ` vga softboot code repository Richard Smith
2004-09-13 16:00 ` vga softboot code repository oops Richard Smith
2004-09-13 16:06 ` vga softboot code repository Jon Smirl
2004-09-06 18:43 ` framebuffer ioctl Otto Solares
2004-09-06 19:08 ` Jon Smirl
2004-09-06 19:24 ` Otto Solares
2004-09-06 19:33 ` Jon Smirl
2004-09-07 15:48 ` Otto Wyss
2004-09-07 16:01 ` Jon Smirl
2004-09-07 18:09 ` Otto Solares
2004-09-06 19:33 ` Jon Smirl
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