Remove G.relbase_valid

In almost all cases there is no difference between `G.relbase_valid`
and checking `G.main->filepath` isn't an empty string.

In many places a non-empty string is already being used instead of
`G.relbase_valid`.

The only situation where this was needed was when saving from
`wm_file_write` where they temporarily became out of sync.
This has been replaced by adding a new member to `BlendFileWriteParams`
to account for saving an unsaved file for the first time.

Reviewed By: brecht

Ref D13564

1 files changed, 3 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_main.c b/source/blender/makesrna/intern/rna_main.c
index 93d7059d2a6..a162aa26b78 100644
--- a/source/blender/makesrna/intern/rna_main.c
+++ b/source/blender/makesrna/intern/rna_main.c
@@ -56,9 +56,10 @@ static void rna_Main_use_autopack_set(PointerRNA *UNUSED(ptr), bool value)
   }
 }
 
-static bool rna_Main_is_saved_get(PointerRNA *UNUSED(ptr))
+static bool rna_Main_is_saved_get(PointerRNA *ptr)
 {
-  return G.relbase_valid;
+  const Main *bmain = (Main *)ptr->data;
+  return (bmain->filepath[0] != '\0');
 }
 
 static bool rna_Main_is_dirty_get(PointerRNA *ptr)