Re: need help with xorg.conf

[Stephen Powell <zlinuxman@wowway.com>]

On Sat, 13 Mar 2010 14:17:10 -0500 (EST), Stephen Powell wrote:
> I did indeed do the math incorrectly!  What a schoolboy mistake!
> I neglected to convert from bits to bytes.  But I don't understand
> your version either.  The correct math, by the way I have traditionally
> done it, is 
> 
>    1366*768*3/1024 = 3073.5k
>    1366*768*4/1024 = 4098k
> 
> This is based on a formula obtained from "Upgrading and Repairing
> PCs", Sixth Edition, by Scott Mueller, page 443.  (This book is
> quite dated, having been copyrighted in 1996.)
> 
> Where did you get the stuff about three buffers?  Does this have
> something to do with 3D graphics acceleration?

I did some more research and answered my own question.  I decided
to consult a much more recent version of "Upgrading and Repairing
PCs".  In particular, I consulted the Seventeenth Edition, which
was copyrighted in 2006, ten years later than the Sixth Edition.

It does indeed have to do with 3D graphics.
The three buffers are the front buffer, back buffer, and Z buffer.
So multiply the numbers above by 3, which is what you said.  That's
assuming that double buffering is used.  But if triple buffering
is used, multiply by 4, not 3.

-- 
  .''`.     Stephen Powell    <zlinuxman@wowway.com>
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