-
- /* Return an even number of verts.
- * This prevents "parity" errors when splitting long triangle strips which
- * can lead to front/back culling mix-ups.
- * Every other triangle in a strip has an alternate front/back orientation
- * so splitting at an odd position can cause the orientation of subsequent
- * triangles to get reversed.
- */
- *max_vertices = *max_vertices & ~1;