added some assertions to catch unexpected swizzle values in cvp_emit_arg(), currently...

diff --git a/src/mesa/tnl/t_vb_arbprogram.c b/src/mesa/tnl/t_vb_arbprogram.c
index 14011f4..3212e00 100644 (file)
--- a/src/mesa/tnl/t_vb_arbprogram.c
+++ b/src/mesa/tnl/t_vb_arbprogram.c
@@ -790,6 +790,13 @@ static struct reg cvp_emit_arg( struct compilation *cp,
     */
    rsw.dword = 0;
    rsw.rsw.neg = src->Negate ? WRITEMASK_XYZW : 0;
+
+   /* we're expecting 2-bit swizzles below... */
+   ASSERT(GET_SWZ(src->Swizzle, 0) < 4);
+   ASSERT(GET_SWZ(src->Swizzle, 1) < 4);
+   ASSERT(GET_SWZ(src->Swizzle, 2) < 4);
+   ASSERT(GET_SWZ(src->Swizzle, 3) < 4);
+
    rsw.rsw.swz = ((GET_SWZ(src->Swizzle, 0) << 0) |
                  (GET_SWZ(src->Swizzle, 1) << 2) |
                  (GET_SWZ(src->Swizzle, 2) << 4) |