Comment 12 for bug 124519

If the check for GL_MAX_TEXTURE_SIZE doesn't fail for the radeon card in question (where it is supposed to fail), it will probably be necessary to write a tiny test program in C which tries to allocate a GL_PROXY_TEXTURE2D of the required size. The GL_MAX_*_SIZE constants are only rough indicators of the real texture capabilities at runtime. In any case checking GL_MAX_3D_TEXTURE_SIZE is definitely broken.

It would be great if the original reporter could confirm whether the patched script still properly disables compiz for her/him. But I think a new upload is in order regardless of this particular problem. The patch definitely breaks more than it fixes. I believe only very high-end cards -- or alternatively just lying drivers -- will be able to get past this test as it is now.