678330 - Use IOKit to get precise GPU information in GfxInfo on Mac

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[Benoit Jacob [:bjacob] (mostly away)]

Currently we use CGL to get GPU information, which is very vague. For example, for NVIDIA cards, it only tells whether the card is a Geforce 8 or newer, or not.

We need to switch to using IOKit like Chrome does: bug 678053 comment 3:

"We use IOKit to scan for PCI-based GPUs.

See http://src.chromium.org/viewvc/chrome/trunk/src/content/gpu/gpu_info_collector_mac.mm?view=markup "

Once this is done, we can stop blacklisting all Geforce 7 and older cards (bug 678053) and only blacklist the cards known to have issues (Geforce 7300 GT).

Comment 1

[Jeff Muizelaar [:jrmuizel]]

Attachment: Use IOKit some

Comment 2

[Jeff Muizelaar [:jrmuizel]]

This patch borrows some of the code from Chromium. It doesn't try to detect dual GPU situations and assumes that CGDisplayIOServicePort(kCGDirectMainDisplay) will do the correct thing. This assumption is supported by testing.

Comment 3

[Marco Bonardo [:mak] (Away Apr 25 - May 5)]

https://hg.mozilla.org/mozilla-central/rev/d747526bd066