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-rw-r--r--src/mesa/tnl/t_vb_program.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vb_program.c b/src/mesa/tnl/t_vb_program.c
index 81e166bde50..9961af70ce7 100644
--- a/src/mesa/tnl/t_vb_program.c
+++ b/src/mesa/tnl/t_vb_program.c
@@ -126,6 +126,8 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine)
}
}
+ machine->NumDeriv = 0;
+
/* init condition codes */
machine->CondCodes[0] = COND_EQ;
machine->CondCodes[1] = COND_EQ;