commit 9bb9373ae7f784e6eb028fe42a24825409d315f0
Author:     Robin <e.robin154@gmail.com>
AuthorDate: Sat Feb 18 16:48:46 2023 +0100
Commit:     Turo Lamminen <turol@users.noreply.github.com>
CommitDate: Tue Feb 21 15:10:08 2023 +0200

    Add display command line parameter
---
 src/i_video.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/i_video.c b/src/i_video.c
index 8cf0e7a5..4e650ec6 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -1030,6 +1030,24 @@ void I_GraphicsCheckCommandLine(void)
         }
     }

+    //!
+    // @category video
+    // @arg <x>
+    //
+    // Specify the display number on which to show the screen.
+    //
+
+    i = M_CheckParmWithArgs("-display", 1);
+
+    if (i > 0)
+    {
+        int display = atoi(myargv[i + 1]);
+        if (display >= 0)
+        {
+            video_display = display;
+        }
+    }
+
     //!
     // @category video
     //