Using Open GL/ Advanced Drawing with HDR

Question

Hey all -
I've just switched to using Vista and now have a new vid card (GTX285) so I'm using the OpenGL stuff for the first time. I can't get my head around how to use the Debugging section to get accurate results with linear data images.
I'm looking at 32bit .exr renders and normally they have a gamma of 1 and I make adjustments in Pshop before going to 8bit, but how what setting in the Advanced Drawing settings can I trust?  Depending on what I have set there the image looks very different, but also converts to 8 bit looking very different.
What is the default workfflow setup that best matches what CS4 does *without* the OpenGL stuff active - but still makes use of the acceleration? The documentation on that stuff is pretty thin.
Thanks
b

Answer 1

Truly appreciate your input.  Thanks.  I will try instalation of Catalyst 11.7 after removal of 11.11 and return to you soon of results.  Thanks, again.
From: Noel Carboni <[email protected]>
To: aldpal <[email protected]>
Sent: Wednesday, November 30, 2011 8:09 AM
Subject: Open GL Advanced Mode?
Re: Open GL Advanced Mode? created by Noel Carboni in Photoshop Windows - View the full discussion
I do not know why the Radeon HD 4600 should not provide Photoshop with the features it expects to see to be able to enable OpenGL.  The crop tool behaving badly could be another indication of a display driver problem.
It's possible the 11.11 driver for that particular card has a bug, or that something else installed on your system is interfering with OpenGL operation.  You're using an older (but not ancient) card on an outdated operating system, so it's possible the driver developers could have concentrated more on other things (e.g., Windows 7 operation) during their development.
Some things you could try:
Check for any other software, such as a remote accesss package (e.g., where you or someone could log in to your system from the network) that could interfere with OpenGL operation.
Remove the Catalyst 11.11 driver, reboot, and install an older version (I suggest trying 11.7, which seemed very stable).
-Noel
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