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SubjectRe: Linux Graphics Architecture

Alan Cox writes:

>>> Read Mark Kilgards paper on it aat SGI
>>
>> I'm not affiliated with the GGI project.
>> The only reason I suggest KGI drivers is: they exist.
>
> Read the direct render paper by Mark Kilgard,
> then you'll understand why the KGI model isnt relevant.

Read it yourself.

The requirements listed at http://reality.sgi.com/mjk/direct/node7.html
include this show-stopper:

: A context-switchable graphics engine. The state of the graphics
: hardware must be context-switchable and the context switch must be
: able to be performed preemptively, including in the middle of a command.

There are several other serious problems, including the implicit
assumption that graphics hardware will enforce security.

On a PC or Mac, everybody with graphics access can get root.
I suppose that isn't any worse than Windows 98...

No thank you. We can forget about this joke and just use KGI.
Note that the GGI library certainly can feed a graphics pipeline
if you have one available. The use of KGI does not prevent good
support for the weird features of SGI hardware.

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