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-rw-r--r--src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index f9a08a011f2..cb4cb877b66 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -1402,6 +1402,10 @@ vec4_visitor::visit(ir_dereference_variable *ir)
this->result = src_reg(*reg);
+ /* System values get their swizzle from the dst_reg writemask */
+ if (ir->var->mode == ir_var_system_value)
+ return;
+
if (type->is_scalar() || type->is_vector() || type->is_matrix())
this->result.swizzle = swizzle_for_size(type->vector_elements);
}