[Bf-blender-cvs] [4c574a62db2] cycles-x: Fix image slot switching during render not working

[Brecht Van Lommel]

Commit: 4c574a62db2120889d2cd9bfd635ce632404c737
Author: Brecht Van Lommel
Date:   Thu Sep 9 17:31:45 2021 +0200
Branches: cycles-x
https://developer.blender.org/rB4c574a62db2120889d2cd9bfd635ce632404c737

Fix image slot switching during render not working

===================================================================

M	source/blender/draw/engines/external/external_engine.c

===================================================================

diff --git a/source/blender/draw/engines/external/external_engine.c b/source/blender/draw/engines/external/external_engine.c
index 3042fb95f1b..d5bed24a570 100644
--- a/source/blender/draw/engines/external/external_engine.c
+++ b/source/blender/draw/engines/external/external_engine.c
@@ -515,6 +515,10 @@ bool DRW_engine_external_use_for_image_editor(void)
     return false;
   }
 
+  if (image->render_slot != image->last_render_slot) {
+    return false;
+  }
+
   RenderEngine *engine = external_engine_get();
   if (engine == NULL) {
     return false;