diff --git a/src/xenia/gpu/gl4/command_processor.cc b/src/xenia/gpu/gl4/command_processor.cc
index 2dd6b7b44..907427790 100644
--- a/src/xenia/gpu/gl4/command_processor.cc
+++ b/src/xenia/gpu/gl4/command_processor.cc
@@ -686,6 +686,10 @@ bool CommandProcessor::ExecutePacketType3(RingbufferReader* reader,
       result =
           ExecutePacketType3_EVENT_WRITE_SHD(reader, packet_ptr, packet, count);
       break;
+    case PM4_EVENT_WRITE_EXT:
+      result =
+          ExecutePacketType3_EVENT_WRITE_EXT(reader, packet_ptr, packet, count);
+      break;
     case PM4_DRAW_INDX:
       result = ExecutePacketType3_DRAW_INDX(reader, packet_ptr, packet, count);
       break;
@@ -1096,6 +1100,17 @@ bool CommandProcessor::ExecutePacketType3_EVENT_WRITE_SHD(
   return true;
 }
 
+bool CommandProcessor::ExecutePacketType3_EVENT_WRITE_EXT(
+    RingbufferReader* reader, uint32_t packet_ptr, uint32_t packet,
+    uint32_t count) {
+  // generate a screen extent event
+  XETRACECP("[%.8X] Packet(%.8X): PM4_EVENT_WRITE_EXT", packet_ptr, packet);
+  reader->TraceData(count);
+  uint32_t unk0 = reader->Read();
+  uint32_t unk1 = reader->Read();
+  return true;
+}
+
 bool CommandProcessor::ExecutePacketType3_DRAW_INDX(RingbufferReader* reader,
                                                     uint32_t packet_ptr,
                                                     uint32_t packet,
diff --git a/src/xenia/gpu/gl4/command_processor.h b/src/xenia/gpu/gl4/command_processor.h
index 481bb98ff..6a21459dd 100644
--- a/src/xenia/gpu/gl4/command_processor.h
+++ b/src/xenia/gpu/gl4/command_processor.h
@@ -151,6 +151,9 @@ class CommandProcessor {
   bool ExecutePacketType3_EVENT_WRITE_SHD(RingbufferReader* reader,
                                           uint32_t packet_ptr, uint32_t packet,
                                           uint32_t count);
+  bool ExecutePacketType3_EVENT_WRITE_EXT(RingbufferReader* reader,
+                                          uint32_t packet_ptr, uint32_t packet,
+                                          uint32_t count);
   bool ExecutePacketType3_DRAW_INDX(RingbufferReader* reader,
                                     uint32_t packet_ptr, uint32_t packet,
                                     uint32_t count);
diff --git a/src/xenia/gpu/xenos.h b/src/xenia/gpu/xenos.h
index 77e9b766a..3b8446e27 100644
--- a/src/xenia/gpu/xenos.h
+++ b/src/xenia/gpu/xenos.h
@@ -398,6 +398,7 @@ enum Type3Opcode {
   PM4_EVENT_WRITE           = 0x46,   // generate an event that creates a write to memory when completed
   PM4_EVENT_WRITE_SHD       = 0x58,   // generate a VS|PS_done event
   PM4_EVENT_WRITE_CFL       = 0x59,   // generate a cache flush done event
+  PM4_EVENT_WRITE_EXT       = 0x5a,   // generate a screen extent event
   PM4_EVENT_WRITE_ZPD       = 0x5b,   // generate a z_pass done event
 
   PM4_DRAW_INDX             = 0x22,   // initiate fetch of index buffer and draw