Photoshop CS4: Open GL on a Mac G5?

[René Damkot]

Just installed the trial of CS4 on my G5.

Something strange happening: My video card isn't recognised?
So I cannot use OpenGL. In CS3, the card is recognised...

This is CS3:
http://img.skitch.com/20081213-pte34nbfcn486f6sx1yn6f12pm.jpg

This is CS4:
http://img.skitch.com/20081213-m294amq745rs5y2h4t1jxm1imp.jpg

System:
Power Mac G5, 2x2GHz, ATI Radeon 9600 Pro, Mac OS X 10.4.11

Any ideas? Older version of OpenGL perhaps?

[FlyingPhotog]

ATI Driver Update time perchance?

[René Damkot]

Latest driver I can find is 2005. Did that one (http://ati.amd.com/support/drivers/mac/macosx10-4x-3x-radeon.html)...

[neumanns]

Dosent open gl require 64bit? I may be way of track...understanding computers is not my thing!

[FlyingPhotog]

Dosent open gl require 64bit? I may be way of track...understanding computers is not my thing!

Shouldn't make a difference. I was running Open GL games back in the Pentium days...

[neumanns]

Did a quick search...False information on my part. (note to self, don't dispense tech info)

[René Damkot]

Did the driver update again (to make sure). No difference...

Strange thing is that CS3 sees the card, and OpenGL engine, and CS4 doesn't even name the card...

[René Damkot]

Anyone?

[Tony-S]

René,

It must be something about CS4's support for OpenGL on that card. As you know, Adobe has a nice history of dropping support for older "things". You might have a look here (http://diglloyd.com/diglloyd/2008-10-blog.html#_20081025AdobeCS4OpenGL) for one person's comments about its performance.

Edit: Seems that Shader Model 3 (http://www.adobeforums.com/webx?14@@.59b69dcd/128) needs to be part of your vid card's ROM. Perhaps the 9600 does not have this?

[René Damkot]

Think I found the answer here (http://kb.adobe.com/selfservice/viewContent.do?externalId=kb404898&sliceId=2#known):
your card doesn't have enough video RAM to support the advanced drawing functions. We require 512 MB RAM for Advanced Drawing to be enabled.

:(

Tried the "AllowOldGPUs.plugin" mentioned here (http://www.adobeforums.com/webx/.59b72e58). No luck.

[Tony-S]

That can't be. I have a 256 mb 8600GT and CS4 supports OpenGL with it.

[René Damkot]

Well, it's either not enough memory (In other threads on the adobe forum 256Mb is mentioned as minimum), or the lack of Shader Model 3 (I think my card has v2).

Ah well.