Re: [Linux-fbdev-devel] [announce 0/7] fbsplash - The Framebuffer Splash

From: Jon Smirl
Date: Tue Mar 15 2005 - 14:12:51 EST

On Tue, 15 Mar 2005 18:58:08 +0000 (GMT), James Simmons
<jsimmons@xxxxxxxxxxxxxxxxx> wrote:
> > > Why do we need patches in the kernel. Just set you config to
> > > CONFIG_DUMMY_CONSOLE, CONFIG_FB, CONFIG_INPUT and don't set fbcon or
> > > vgacon. Then have a userspace app using /dev/fb and /dev/input create a
> > > userland console. There is no need to do special hacks in the kernel.
> >
> > /dev/fb is not accelerated, if you want full acceleration use
> > /dev/dri. Using /dev/dri you can write a fully composited console that
> > displays dengavi in realtime. This is also a path to getting multiuser
> > working without a lot of kernel patches.
> Not every device has a 3D core!!! DRM is not the answer for the entire graphics
> world. Its only for 3D functionality. If you want eye candy without 3D on small
> devices use fbdev.

DRM doesn't know a thing about 3D. All it does is DMA, memory
management and queue things up for the GPU to work on. You don't even
have to have a GPU processor you could use the CPU to execute the

It's the code up in mesa that knows about 3D and builds the commands
to be sent to DRM.

Jon Smirl
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