I have a Macbook Pro from 2009, and while it flatly refuses to run shaders on Mac, they run just fine on the Windows partition. You may just need to look into using Windows with your current hardware instead. I did this so I could play Blockland and do all of my Mac things on the same device.
If I'm remembering correctly, Mac should come with Bootcamp, which is a tool you can use to partition some of your disk space to run an entirely different OS on it. However, you will need a licensed copy of Windows (and a thumb drive or a CD or two if you want to install all the support drivers; by the way, if you don't do this, your installed copy of Windows will still be accessible, but will simply not recognize how to properly interact with a bunch of your Mac's internal hardware or how to communicate with the external ports - for instance, despite having a video card, Windows has no way of knowing this and even installing your card's appropriate drivers will not work. ALWAYS ACCEPT THE SUPPORT DRIVERS.)
its probably due to how mac os x handles the drivers... even with a GeForce 9400M G, the shaders above minimum are just corrupted or very weirdly placed
This is exactly it.
