Geometry Nodes: refactor logging during geometry nodes evaluation

Many ui features for geometry nodes need access to information generated
during evaluation:
* Node warnings.
* Attribute search.
* Viewer node.
* Socket inspection (not in master yet).

The way we logged the required information before had some disadvantages:
* Viewer node used a completely separate system from node warnings and
  attribute search.
* Most of the context of logged information is lost when e.g. the same node
  group is used multiple times.
* A global lock was needed every time something is logged.

This new implementation solves these problems:
* All four mentioned ui features use the same underlying logging system.
* All context information for logged values is kept intact.
* Every thread has its own local logger. The logged informatiton is combined
  in the end.

Differential Revision: https://developer.blender.org/D11785

1 files changed, 16 insertions, 7 deletions

diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
index f730f199ca4..44b17b8c391 100644
--- a/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_data_source_geometry.cc
@@ -31,11 +31,15 @@
 
 #include "ED_spreadsheet.h"
 
+#include "NOD_geometry_nodes_eval_log.hh"
+
 #include "bmesh.h"
 
 #include "spreadsheet_data_source_geometry.hh"
 #include "spreadsheet_intern.hh"
 
+namespace geo_log = blender::nodes::geometry_nodes_eval_log;
+
 namespace blender::ed::spreadsheet {
 
 void GeometryDataSource::foreach_default_column_ids(
@@ -438,13 +442,18 @@ GeometrySet spreadsheet_get_display_geometry_set(const SpaceSpreadsheet *sspread
         }
       }
       else {
-        if (object_eval->runtime.geometry_set_previews != nullptr) {
-          GHash *ghash = (GHash *)object_eval->runtime.geometry_set_previews;
-          const uint64_t key = ED_spreadsheet_context_path_hash(sspreadsheet);
-          GeometrySet *geometry_set_preview = (GeometrySet *)BLI_ghash_lookup_default(
-              ghash, POINTER_FROM_UINT(key), nullptr);
-          if (geometry_set_preview != nullptr) {
-            geometry_set = *geometry_set_preview;
+        const geo_log::NodeLog *node_log =
+            geo_log::ModifierLog::find_node_by_spreadsheet_editor_context(*sspreadsheet);
+        if (node_log != nullptr) {
+          for (const geo_log::SocketLog &input_log : node_log->input_logs()) {
+            if (const geo_log::GeometryValueLog *geo_value_log =
+                    dynamic_cast<const geo_log::GeometryValueLog *>(input_log.value())) {
+              const GeometrySet *full_geometry = geo_value_log->full_geometry();
+              if (full_geometry != nullptr) {
+                geometry_set = *full_geometry;
+                break;
+              }
+            }
           }
         }
       }