gl/syncmeta: implement synchronisation without glFenceSync

Uses glFinish as that's the best we have for lesser OpenGL versions.

diff --git a/gst-libs/gst/gl/gstglsyncmeta.c b/gst-libs/gst/gl/gstglsyncmeta.c
index 23806aa514f88956f440e3e9d4f1585951409543..f680353fb05c80b48290d1dabb37dc8cb4ba2cab 100644 (file)
--- a/gst-libs/gst/gl/gstglsyncmeta.c
+++ b/gst-libs/gst/gl/gstglsyncmeta.c
@@ -69,9 +69,11 @@ _set_sync_point (GstGLContext * context, GstGLSyncMeta * sync_meta)
       gl->DeleteSync (sync_meta->glsync);
     }
     sync_meta->glsync = gl->FenceSync (GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+    gl->Flush ();
     GST_LOG ("setting sync object %p", sync_meta->glsync);
+  } else {
+    gl->Finish ();
   }
-  gl->Flush ();
 }
 
 void