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-rw-r--r--src/mesa/drivers/dri/i965/brw_vec4_vs_visitor.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_vs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_vs_visitor.cpp
index 64c72fd4224..6a1c049e1f9 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_vs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_vs_visitor.cpp
@@ -155,6 +155,7 @@ vec4_vs_visitor::make_reg_for_system_value(ir_variable *ir)
switch (ir->data.location) {
case SYSTEM_VALUE_VERTEX_ID:
+ case SYSTEM_VALUE_VERTEX_ID_ZERO_BASE:
reg->writemask = WRITEMASK_X;
break;
case SYSTEM_VALUE_INSTANCE_ID: