Hi,
I have a shader that works great on all the machines I’ve tested except for a couple of laptops. There are 4 laptops each with an nVidia Quadro FX Go 1400 card… two of them render fine, the other two don’t.
The reason the shader does not work appears to be related to gl_FrontFacing. If I replace gl_FrontFacing with just a constant bool (like ‘true’) then it works fine… but of course I don’t get the benefit of detecting the face direction.
I’ve installed the latest driver for the card (with assistance from laptopvideo2go.com) but it still does not work. What else should I be looking for? I’ve looked all over nVidia’s website, but can’t find anything that remotely helps.
Thanks in advance!
Walker