How Do I change Graphics Settings on a Mac?

[jack.mcsweeney]

Hi,
I've got a macbook pro, and I just booted up the game, and the frame rate is absolutely horrendous, so I want to lower the graphics settings considerably, but there's no option to do so in game, even on the main menu...it just allows you to change brightness and gamma?
I've seen other threads saying that you need to change it in launcher, but I don't know what that means, can anyone help? Thanks

Macbook pro is running:
2.5 GHz Intel Core i5
4GB RAM 1600 MHz DDR3
Intel HD Graphics 4000 1024 MB
OSX 10.9.5

[CrackeR]

Click Options in the Launcher and adjust....

[Ceejay]

Just so you know intel chipsets are not supported on the mac, it actually states this on the store page.

There is a bug in apples drivers that the developer could not work around, which causes artifacting and missing textures(which makes the game almost unplayable), on top of which even without the graphic problems, the intels performance wise, are below the minimum requirements for this game ayway, hence your frame rates.

The actual developer has posted on the threads and stated so (have a look around at the mac threads).

Edit
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Found it:

引用自 VPLTD Peter Mulholland：

As stated at purchase, Intel graphics are not supported due to bugs in the drivers under OS X. We cannot work around those bugs, so they are unsupported.

The Intel 4000 GPU does not have good enough performance to run Witcher 2 well anyway, even under Windows

引用自 VPLTD Peter Mulholland：

No, the problem is the Apple driver. "Other Steam Games" doesnt mean anything at all. REDEngine pushes things pretty hard, and if the driver is not up to spec, it will fall over. Unfortunately, this is the case with Apple's Intel drivers. We have reported a few issues with various GL functions to Apple, only to have had no response on fixing them. The same operations work correctly on AMD and Nvidia based Macs.

引用自 VPLTD Peter Mulholland：

The difference is in the Windows and Linux world, drivers get fixed and updated much more regularly. Apple only update them on each major OS release, unless it is a problem that causes a desktop issue.