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, 4 insertions, 3 deletions

diff --git a/source/blender/modifiers/intern/MOD_nodes_evaluator.hh b/source/blender/modifiers/intern/MOD_nodes_evaluator.hh
index 58eb6a4cd0b..f4ee6242dcb 100644
--- a/source/blender/modifiers/intern/MOD_nodes_evaluator.hh
+++ b/source/blender/modifiers/intern/MOD_nodes_evaluator.hh
@@ -19,20 +19,21 @@
 #include "BLI_map.hh"
 
 #include "NOD_derived_node_tree.hh"
+#include "NOD_geometry_nodes_eval_log.hh"
 #include "NOD_node_tree_multi_function.hh"
 
 #include "FN_generic_pointer.hh"
 
 #include "DNA_modifier_types.h"
 
+namespace geo_log = blender::nodes::geometry_nodes_eval_log;
+
 namespace blender::modifiers::geometry_nodes {
 
 using namespace nodes::derived_node_tree_types;
 using fn::GMutablePointer;
 using fn::GPointer;
 
-using LogSocketValueFn = std::function<void(DSocket, Span<GPointer>)>;
-
 struct GeometryNodesEvaluationParams {
   blender::LinearAllocator<> allocator;
 
@@ -48,7 +49,7 @@ struct GeometryNodesEvaluationParams {
   const NodesModifierData *modifier_;
   Depsgraph *depsgraph;
   Object *self_object;
-  LogSocketValueFn log_socket_value_fn;
+  geo_log::GeoLogger *geo_logger;
 
   Vector<GMutablePointer> r_output_values;
 };