Created attachment 118391 [details]
Compressed shader that fails during compilation

Ok, I'm pretty sure now, that the game actually loads a Core Context, at least
the apitrace I've made (will be uploaded shortly, as soon as the compression is
done) shows a 4.1 context, when I do "lookup state".

Also, the game seems to choke on the missing AoA functionality or at least
doesn't check whether it can use AoA:
> 0:9(23): error: GL_ARB_arrays_of_arrays required for defining arrays of arrays

The shader triggering this is, however, a tessellation control shader, so maybe
Kenneth is right anyway (ie. I don't get the geometry with radeonsi because the
tessellation control shader fails to compile due to another extension, that is
as of yet missing while i965-supported GPUs don't get the geometry because
they're lacking tessellation to begin with).

The attached file is the shader triggering this error in the following call
sequence:
glCreateShader(GL_TESS_CONTROL_SHADER); # = 594
glShaderSource(594, 1, <SOURCE FROM ATTACHED FILE>, NULL);
glCompileShader(594); # compile error