Replace gl_frag_attrib enum with gl_varying_slot (part 110111000)
Replace gl_frag_attrib enum with gl_varying_slot (part 110111001)
Replace gl_frag_attrib enum with gl_varying_slot (part 11011101)
Replace gl_frag_attrib enum with gl_varying_slot (part 1101111)
Replace gl_frag_attrib enum with gl_varying_slot (part 111)