-#endif
-#ifdef DO_INDEX
- line.span.arrayMask |= SPAN_INDEX;
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- compute_plane(line.x0, line.y0, line.x1, line.y1,
- v0->attrib[FRAG_ATTRIB_CI][0],
- v1->attrib[FRAG_ATTRIB_CI][0], line.iPlane);
- }
- else {
- constant_plane(v1->attrib[FRAG_ATTRIB_CI][0], line.iPlane);
- }
-#endif