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-rw-r--r--mesalib/src/mesa/tnl/t_draw.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mesalib/src/mesa/tnl/t_draw.c b/mesalib/src/mesa/tnl/t_draw.c
index 2a11091c8..741f0ed3f 100644
--- a/mesalib/src/mesa/tnl/t_draw.c
+++ b/mesalib/src/mesa/tnl/t_draw.c
@@ -468,6 +468,8 @@ void _tnl_draw_prims( struct gl_context *ctx,
break;
}
+ assert(prim[i].num_instances > 0);
+
/* Binding inputs may imply mapping some vertex buffer objects.
* They will need to be unmapped below.
*/