topic Re: Tiger flashing in OpenGl in Installation & update

Tiger flashing in OpenGl

Ted Taylor — Tue, 10 May 2005 21:27:55 GMT

Since installing Tiger, the following has started when OpenGL is the rendering engine. No problem with internal 3d engine.

When selecting something in 3d window , the window flashes totally white twice. When moving viewpoint it only flashes once. Tried it with and with out hardware acceleration. Tis a bit annoying. Any body else running into this?

Re: Tiger flashing in OpenGl

rm — Tue, 10 May 2005 23:18:30 GMT

Was happening here too. Except it started after 9.0 was installed for me. I'm running OS 10.3.8.

However, I updated to build 2018 and it has stopped. Are you on the latest build?

Be warned, if you update to the latest build from the first revision ( cant remember the number ) it will probably screw up AC. I had that problem. For some reason GS told me to reinstall AC 9.0 from the original disk, then update to 2018 build.

Good luck

Re: Tiger flashing in OpenGl

Ted Taylor — Wed, 11 May 2005 17:20:38 GMT

I'm running build 2018 also. Must be some particularity in my setup.

Re: Tiger flashing in OpenGl

Anonymous — Wed, 11 May 2005 20:44:47 GMT

I have the same problem. I haven't done any investigations yet into possible fixes. I see we both have the ATI Radeon card. Maybe a new driver? I'll let you know if I find something that works.

Steve Campbell
ArchiCAD 9.0 PowerMac G5 Dual 2Ghz with ATI Radeon 9600

Re: Tiger flashing in OpenGl

__archiben — Wed, 11 May 2005 22:08:33 GMT

no problem here: Mac Powerbook G4, ATI mobility card, tiger and AC9 2018 . . .

must be that super-duper new video card they're putting in the new G5's to drive the double cinema displays?

~/archiben

Re: Tiger flashing in OpenGl

Anonymous — Wed, 11 May 2005 22:33:28 GMT

I don't know if this is related:

http://www.macosrumors.com/20050506.php

Re: Tiger flashing in OpenGl

Ted Taylor — Thu, 12 May 2005 13:28:24 GMT

I downloaded and installed new driver for 10.4, apparently I now have the ability to rotate my monitor 90 degrees but unfortunately it is still flashing. I just about have the timing of my eye blinks down to matching the flash, so it is not nearly as apparent.

Ted, thanks for the link to macosrumour. That may explain it.

Re: Tiger flashing in OpenGl

__archiben — Fri, 13 May 2005 03:04:13 GMT

more on this - it is a bug: i opened another project and saw what you were talking about. i've tracked it down to the background selection. whenever i'm using 'As In Photorendering Settings' as the 3D window background, and the photorendering settings are using lightworks images (scaled in my case) you get the flashing.

anybody else verify before i send it off to the tech guys?

cheers
~/archiben

Re: Tiger flashing in OpenGl

Aussie John — Fri, 13 May 2005 05:28:02 GMT

Ted wrote:
I don't know if this is related:

http://www.macosrumors.com/20050506.php

Macosrumors is a very unreliable "rumour" site. They seem to make things up

Re: Tiger flashing in OpenGl

Gorazd — Fri, 13 May 2005 13:49:02 GMT

Hi guys. We have here very mixed environment. One Mac mini, PC with XP home and HP notebook with XP pro. They all have AC 9 installed, and flashing of the monitor appears on all machines. It doesn't flash all the time. In some project it does in others i doesn't. It drives us nuts, and we can not figure it out. Also in the same project, in the mornig it flashes, after lunch it doesn't. Any help?

Re: Tiger flashing in OpenGl

rm — Fri, 13 May 2005 17:35:43 GMT

I'm starting to wonder if it is a common library part we are all using, or some setting in preferences for redraw that is causing the problem.

Re: Tiger flashing in OpenGl

__archiben — Sat, 14 May 2005 04:53:47 GMT

rm wrote:
...or some setting in preferences for redraw that is causing the problem.

has anybody been able to verify or disprove my earlier post? i can only get the flashing when the 3D window background setting is set to 'As in Photorendering Window' and the photorendering window contains an image as the background . . .

anybody?

~/archiben

Re: Tiger flashing in OpenGl

Anonymous — Mon, 16 May 2005 18:03:27 GMT

"has anybody been able to verify or disprove my earlier post? i can only get the flashing when the 3D window background setting is set to 'As in Photorendering Window' and the photorendering window contains an image as the background . . .

anybody? "

I get just the opposite. The flashing goes away when I change my 3d Window background from 'Single Color' to 'As in Photorendering Window' and select a photo background. I had tried this earlier and got rid of the flashing, but then my 3d navigation was taking a seriously long time to start. I would click and drag to rotate, for example, and the view wouldn't start changing for 6 seconds. But with the project I have open at the moment the photo background gets rid of the flashing and I don't have a delay anymore. It's a fairly large model for us, so I don't think the model complexity is the difference.

So it seems that monkeying with the background settings could help.

Steve Campbell
ArchiCAD 9.0(US) latest build, OS X 10.4, Power G5 Dual 2.0 GHz

Re: Tiger flashing in OpenGl

__archiben — Tue, 17 May 2005 03:43:23 GMT

Steve.Campbell wrote:
So it seems that monkeying with the background settings could help.

yeah - i managed to disprove my own theory last night. but i'm sure that the background does have something to do with it . . .

~/archiben

Re: Tiger flashing in OpenGl

Anonymous — Tue, 17 May 2005 16:38:34 GMT

I think changing the background just slows down the redraw of the 3D window enough that it doesn't look like a flash anymore. It looks like what we're seeing is the 3D window goes completely blank then the model redraws the objects from farthest away to closest.

With a single color background this happens so quickly it looks like a flashing of the screen if your background has a light color. With the photo background it slows down so it's less annoying.

So maybe this redraw sequence has always been there but now with Tiger it's slowed down slightly so now we're able to see it.

I also noticed that the model I was testing with yesterday at first didn't have it but as it was open longer the flashing returned with the photo background.

Steve Campbell
OSX 10.4.1, ArchiCAD 9.0 (US) latest build, PowerMac G5 Dual 2.0 Ghz