Fantastic, I will try this out tonight. Now I know what to google for the results all seem to be of the same opinion. Cheers
On 24 October 2013 15:30, Bart Botta <000...@gmail.com> wrote: > > On Thu, Oct 24, 2013 at 4:31 AM, Chris Bagley <chris.bag...@gmail.com>wrote: > >> I have two users for whom a call to (gl:get-integer :num-extensions) >> errors with: >> OpenGL signaled (1280 . iNVLID-ENUM) from GET-INTGER-V >> > I think :num-extensions requires a GL 3.0+ context, so in general you > should check that before using it. > > >> >> The only thing they both have in common it seems is OSX >> >> It seems from here >> https://developer.apple.com/library/mac/releasenotes/general/macosxlionapidiffs/OpenGL.htmlthat >> this enum was only added in OsX 10.7 (Lion) but at least one of these >> folks is using mavericks which has 4.2 support (so I'm told :)) >> >> > On OSX, I think you need to specifically request 3.0+ when creating the > context, or it will only give you a 2.x context since it actually separates > out the core profile. (On other platforms I think NVidia and AMD drivers > will default to the highest version it supports, but enable the backwards > compatibility extension or profile or whatever it is) > > >
