unity-dev team mailing list archive

[Sam Spilsbury <sam.spilsbury@xxxxxxxxxxxxx>]

Hey All,

A small heads up so nobody gets bitten by this one ever again: If you are 
using vertex buffer objects with the nvidia, you MUST ensure that 
GL_VERTEX_ARRAY and GL_TEXTURE_COORDINATE_ARRAY client states are 
disabled. Otherwise the nvidia driver (and only the nvidia driver)  will 
crash with an unusable stacktrace (glDrawArrays if you single-step) and
you're gonna have a bad time trying to figure out why it happens.

Spending most of today made me realize and I'd like to have a place to 
document some "gotchas" that developers run into with the various graphics 
drivers so that other people don't run into them, or worse, people merge 
code without being able to test on those drivers and break other people's 
systems inadvertently.

Should we go with a wiki page? Launchpad bug reports? Something else?

(Also, if you run into a driver oddity or "different" behaviour and happen 
to fix it, that's a pretty obvious place you should look at refactoring 
the code to get it under autotest. Nobody wants to accidentally regress 
somethign that happens on hardware they don't have, that's a total 
nightmare for debugging).

Cheers,

Sam