Spreadsheet: support showing data of specific node

Previously, the spreadsheet editor could only show data of the original
and of the final evaluated object. Now it is possible to show the data
at some intermediate stages too.

For that the mode has to be set to "Node" in the spreadsheet editor.
Furthermore, the preview of a specific node has to be activated by
clicking the new icon in the header of geometry nodes.

The exact ui of this feature might be refined in upcoming commits.
It is already very useful for debugging node groups in it's current
state though.

Differential Revision: https://developer.blender.org/D10875

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 1c56312b38b..002071fac30 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -1756,6 +1756,10 @@ void BKE_object_free_derived_caches(Object *ob)
     BKE_geometry_set_free(ob->runtime.geometry_set_eval);
     ob->runtime.geometry_set_eval = NULL;
   }
+  if (ob->runtime.geometry_set_preview != NULL) {
+    BKE_geometry_set_free(ob->runtime.geometry_set_preview);
+    ob->runtime.geometry_set_preview = NULL;
+  }
 }
 
 void BKE_object_free_caches(Object *object)
@@ -1806,6 +1810,18 @@ void BKE_object_free_caches(Object *object)
   }
 }
 
+/* Can be called from multiple threads. */
+void BKE_object_set_preview_geometry_set(Object *ob, struct GeometrySet *geometry_set)
+{
+  static ThreadMutex mutex = BLI_MUTEX_INITIALIZER;
+  BLI_mutex_lock(&mutex);
+  if (ob->runtime.geometry_set_preview != NULL) {
+    BKE_geometry_set_free(ob->runtime.geometry_set_preview);
+  }
+  ob->runtime.geometry_set_preview = geometry_set;
+  BLI_mutex_unlock(&mutex);
+}
+
 /**
  * Actual check for internal data, not context or flags.
  */