Index: t_vtx_exec.c
===================================================================
RCS file: /cvs/mesa/Mesa/src/mesa/tnl/t_vtx_exec.c,v
retrieving revision 1.18
diff -u -r1.18 t_vtx_exec.c
--- t_vtx_exec.c	25 Apr 2006 00:53:26 -0000	1.18
+++ t_vtx_exec.c	22 Nov 2006 17:44:08 -0000
@@ -239,6 +239,11 @@
 	 return 2;
       }
    case GL_TRIANGLE_STRIP:
+      /* no parity issue, but need to make sure the tri is not drawn twice */
+      if (nr & 1) {
+	 tnl->vtx.prim[tnl->vtx.prim_count-1].count--;
+      }
+      /* fallthrough */
    case GL_QUAD_STRIP:
       switch (nr) {
       case 0: ovf = 0; break;