On Tue, May 22, 2001 at 11:46:34AM -0400, Mike A. Harris wrote:
> On Tue, 22 May 2001, Daryll Strauss wrote:
>
> >> Then, you should have at least a couple megabytes left over for
> >> the X pixmap cache and for OpenGL textures.
> >
> >Please realize these are important and significant parts of the
> >calculation. For example, in the tdfx driver you can be using up to 1MB
> >of command fifo, you can have 2048 lines (times the screen width) of
> >offscreen pixmap cache, and basically whatever extra is used as
> >textures. There may also be interesting alignment issues. Memory had to
> >sit on 4k boundaries on the tdfx hardware. The driver tries to make
> >intelligent choices, but sometimes they are difficult. Would you rather
> >have offscreen pixmap memory which can be used for playing a video or
> >have more texture memory which makes quake go faster?
> >
> >So, the calculation Brian listed is the minimum requirement for 3D to
> >work in a given mode, but it isn't the maximum. Each board is different
> >and may change as the code changes. You're not going to get one formula
> >that says "With ram X and depth Y your maximum resolution is Z"
>
> Right, but what I want is "Here are your options, and you cannot
> choose DRI in a configuration that will make the machine lock up
> due to memory constraints."
>
Regardless of what you put in a config tool, or when the Xserver starts, the
machine should NEVER lock up.
Can you let us know which particular configurations cause a lockup and we
should fix them.
Alan.
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