mediump vec4 xlat_main( in highp float face ); mediump vec4 xlat_main( in highp float face ) { return vec4( face); } varying highp float xlv_VFACE; void main() { mediump vec4 xl_retval; xl_retval = xlat_main( highp float(xlv_VFACE)); gl_FragData[0] = mediump vec4( xl_retval); }