On Tue, 16 Nov 1999, john silver wrote:
> Sorry, no confusion with images. I have since discovered that the effect is
> caused by my ATI graphics card. When I turn off all the ATI extensions on
> my ProG3, the problem disappears. Turn them back on, it comes back. There
> are five ATI extensions, and every one of them has a different version
> number. I can only tell you that I downloaded and installed an ATI update
> extension (v. 1.4.8) when it was announced in MacInTouch. Thinking back, I
> first saw this problem in another stack about the time I got the new box.
>
> This time the problem came up when I created a a series of graphics with a
> "noop" ink. I got one to work correctly (with the graphic style set to
> rectangle) and then copy/pasted to make the others. I changed the graphic
> style of two of them to polygon, and got the anomalous effect. The effect
> goes away when I change the graphic type back to rectangle, and comes back
> when I switch back to polygon and reset the outline points.
>
> The effect is not as simple as the ink working or not working, because the
> graphic looks right after being edited. Also, the area of anomalous color
> does not completely fill the polygon outline--it looks like a 0.8 scale
> version, with the same topleft coordinate. Very wierd, but as repeatable as
> can be!
There have been numerous reports of problems with these ATI drivers on
the QuickTime list. Reportedly the last few releases of the driver
are much improved, but in some cases turning acceleration off (or
disabling the extensions entirely) seems to be the only reliable cure.
Just FYI, the Windows ATI drivers are pretty broken too, and they have
yet to release a driver that works properly at all resolutions and
screen depths that the cards are supposed to support. Amazingly,
these problems are easily reproducible using just the demo games that
ship on the Windows 98 CD. Not a great thing to see from what is
probably the world's largest vendor of graphics chips.
Regards,
Scott
> John T. Silver ([EMAIL PROTECTED])
> Multimedia Laboratory Coordinator
> Health Sciences Library, University of Tennesee at Memphis
> Memphis, TN 38163
> (901) 448-6817
>
********************************************************
Scott Raney [EMAIL PROTECTED] http://www.metacard.com
MetaCard: You know, there's an easier way to do that...
