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-rw-r--r--src/server/GraphImpl.cpp8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/server/GraphImpl.cpp b/src/server/GraphImpl.cpp
index ceb94748..256d607a 100644
--- a/src/server/GraphImpl.cpp
+++ b/src/server/GraphImpl.cpp
@@ -211,9 +211,11 @@ GraphImpl::pre_process(ProcessContext& context)
// Mix down input ports and connect buffers
for (uint32_t i = 0; i < num_ports(); ++i) {
PortImpl* const port = _ports->at(i);
- port->pre_process(context);
- port->pre_run(context);
- port->connect_buffers();
+ if (!port->is_driver_port()) {
+ port->pre_process(context);
+ port->pre_run(context);
+ port->connect_buffers();
+ }
}
}