Geometry Nodes: support instancing collections

The Point Instance node can instance entire collections now.
Before, only individual collections were supported.

Randomly selecting objects from the collection on a per point basis
is not support, yet.

Last part of D9739.

Ref T82372.

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/drawnode.c b/source/blender/editors/space_node/drawnode.c
index f1ab433c639..f8c71791054 100644
--- a/source/blender/editors/space_node/drawnode.c
+++ b/source/blender/editors/space_node/drawnode.c
@@ -3182,6 +3182,13 @@ static void node_geometry_buts_attribute_math(uiLayout *layout,
   uiItemR(layout, ptr, "input_type_b", DEFAULT_FLAGS, IFACE_("Type B"), ICON_NONE);
 }
 
+static void node_geometry_buts_point_instance(uiLayout *layout,
+                                              bContext *UNUSED(C),
+                                              PointerRNA *ptr)
+{
+  uiItemR(layout, ptr, "instance_type", DEFAULT_FLAGS | UI_ITEM_R_EXPAND, NULL, ICON_NONE);
+}
+
 static void node_geometry_buts_attribute_fill(uiLayout *layout,
                                               bContext *UNUSED(C),
                                               PointerRNA *ptr)
@@ -3219,6 +3226,9 @@ static void node_geometry_set_butfunc(bNodeType *ntype)
     case GEO_NODE_ATTRIBUTE_MATH:
       ntype->draw_buttons = node_geometry_buts_attribute_math;
       break;
+    case GEO_NODE_POINT_INSTANCE:
+      ntype->draw_buttons = node_geometry_buts_point_instance;
+      break;
     case GEO_NODE_ATTRIBUTE_FILL:
       ntype->draw_buttons = node_geometry_buts_attribute_fill;
       break;