Add option to Copy the active view layer, and add an empty view layer

Modify the view layer add operator (and underlying `BKE_view_layer_add`)
to allow for copying the current view layer, as well as adding a new one
but with all LayerCollections disabled by default (this is important for
heavy scenes where currently adding view layers can take a long time due
to enabling every collection by default).

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D6862

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenloader/intern/versioning_280.c b/source/blender/blenloader/intern/versioning_280.c
index a7c9c073018..eda13dce084 100644
--- a/source/blender/blenloader/intern/versioning_280.c
+++ b/source/blender/blenloader/intern/versioning_280.c
@@ -462,7 +462,7 @@ static void do_version_layers_to_collections(Main *bmain, Scene *scene)
   const bool need_default_renderlayer = scene->r.layers.first == NULL;
 
   for (SceneRenderLayer *srl = scene->r.layers.first; srl; srl = srl->next) {
-    ViewLayer *view_layer = BKE_view_layer_add(scene, srl->name);
+    ViewLayer *view_layer = BKE_view_layer_add(scene, srl->name, NULL, VIEWLAYER_ADD_NEW);
 
     if (srl->layflag & SCE_LAY_DISABLE) {
       view_layer->flag &= ~VIEW_LAYER_RENDER;
@@ -528,7 +528,7 @@ static void do_version_layers_to_collections(Main *bmain, Scene *scene)
   /* If render layers included overrides, or there are no render layers,
    * we also create a vanilla viewport layer. */
   if (have_override || need_default_renderlayer) {
-    ViewLayer *view_layer = BKE_view_layer_add(scene, "Viewport");
+    ViewLayer *view_layer = BKE_view_layer_add(scene, "Viewport", NULL, VIEWLAYER_ADD_NEW);
 
     /* If we ported all the original render layers,
      * we don't need to make the viewport layer renderable. */