Shader error only under Mac OSX

[Orphis]

For OSX, you rely on the OS updates. I'm worried, didn't you have the recent graphical driver updates ? It was issued last week, but I'm not sure it applies to your computer. And with it, you wouldn't have such a low OpenGL profile...

[biohazard]

My Mac Book Pro has 2 videos cards, 1 onboard 9400m and 1 offboard 9600m GT, i have already instaled the graphical patch

Code:

What's included?

The Snow Leopard Graphics Update contains stability and performance fixes for graphics applications and games:

    * Addresses frame rate issues occurring in Portal and Team Fortress 2 by Valve, on iMac (Late 2009 and Mid 2010), Mac mini (Early 2009 and Mid 2010), Mac Pro (Early 2009), MacBook (Early 2009 and Mid 2010) and MacBook Pro (15-inch, Mid 2010) or MacBook Pro (17-inch, Mid 2010) models.
    * Resolves an issue that could cause Aperture 3, or StarCraft II by Blizzard, to unexpectedly quit or become unresponsive.
    * Resolves an image corruption issue that may occur when disconnecting and reconnecting external displays while the system is running.

Mac users can only use up to OpenGL 2.1, though, due to lack of support on current Mac video cards.

Part of the issue with bringing OpenGL 3.0 support is that the newer versions deprecated many older functions from OpenGL 2.x in an attempt to modernize and simplify the overall API. All three revisions of OpenGL 3.x also include revisions to the shader language as well. Updating all the support requires work on Apple's part as well as the cooperation of GPU vendors to get drivers into shape. OpenGL 3.1 and 3.2 were released last year, well into Snow Leopard's development cycle, and drivers offering beta support for those versions of OpenGL were the norm on Windows Vista.