Intel driver missing shading language extension

[Brian Paul]

Mateusz Kaduk wrote:
> I am trying examples and when I run this on my system
> http://www.lighthouse3d.com/opengl/glsl/examples/glutglsl-unix.tar.gz
> Xorg is restarting in a loop. Restarting gdm does not help. Only 
> restarting the whole system fix this and not running this "helloworld" 
> example. I think this is a bug.

I'm not sure what's causing the crash, but I suspect it's a GLX issue.

I tried the glutglsl-unix.tar.gz test program and found a problem.

It doesn't work with Mesa as-is because there are two fragment shaders. 
  Mesa's GLSL linker doesn't yet handle linking multiple fragment 
shaders or multiple vertex shaders.  If you just provide one fragment 
shader and one vertex shader it'll work.

Also, the glut program is a bit poorly written.  It continuously redraws 
the scene over and over even though nothing is changing.  It also 
doesn't check for GLSL compile/link errors.

-Brian