Thread (25 messages) 25 messages, 10 authors, 2005-03-15

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

From: Jon Smirl <hidden>
Date: 2005-03-15 19:08:32
Also in: lkml

On Tue, 15 Mar 2005 18:58:08 +0000 (GMT), James Simmons
[off-list ref] wrote:
quoted
quoted
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
commands.

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


-- 
Jon Smirl
jonsmirl@gmail.com


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