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Diffstat (limited to 'src/mesa/tnl/t_vb_arbprogram.c')
-rw-r--r--src/mesa/tnl/t_vb_arbprogram.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vb_arbprogram.c b/src/mesa/tnl/t_vb_arbprogram.c
index 8b16835677..68499faafa 100644
--- a/src/mesa/tnl/t_vb_arbprogram.c
+++ b/src/mesa/tnl/t_vb_arbprogram.c
@@ -129,6 +129,8 @@ static void do_RSW( struct arb_vp_machine *m, union instruction op )
GLuint swz = op.rsw.swz;
GLuint neg = op.rsw.neg;
+ ASSERT(result != arg0); /* this would be very bad */
+
result[0] = arg0[GET_RSW(swz, 0)];
result[1] = arg0[GET_RSW(swz, 1)];
result[2] = arg0[GET_RSW(swz, 2)];