On Tue, Dec 03, 2002 at 03:29:32PM -0800, Ian Romanick wrote:
| 
|     ...  On Windows, I can go into the OpenGL tuning app for my driver and
| click 'force anisotropic filtering.'  Since this extension was created AFTER
| Quake, there's NO WAY to enable it from Quake.  In Linux I get tough
| cookies, but on "that other" operating system I get anisotropic filtered
| goodness.  Which do YOU think is the better user experience?

Depends.  How much performance will I lose on my machine when I force
anisotropic filtering on?  Just because you can turn the feature on
doesn't mean you automatically get a "better user experience."

| The problem is that for some knobs (like ones created after the apps), the
| only place where they can possibly be turned is at the system level.

You picked a control that can be turned on without too much damage to a
game.  However, I'd bet it would cause the conformance tests to fail,
and might cause silently incorrect results for film/video editing
software that Linux-based effects houses use.  So globally enabling even
such a simple control isn't hazard-free.

And there are plenty of other controls that can't be turned on without
cooperation from the app, because they change resource requirements or
need setup at several stages of the pipeline or conflict with other
existing rendering modes.  A mechanism to allow such things to be forced
on wouldn't be of any use.

All things considered, it's an interesting example but not a compelling
argument.

Allen


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