Geometry Nodes: Add legacy warning and "View Legacy" operator

This commit adds warning messages to "legacy" nodes that will be
removed in the future. The warning is shown in the node header, but
it is not printed in the terminal or displayed in the modifier. It is
also not propogated to node groups, but that is a more general task.

If the modifier's node tree has executed a deprecated node, it will
display a warning and a "Search" button that will select the nodes and
pan to them in the node editor. This doesn't open child node trees and
select nodes in there, because I want to keep this operator simple and
avoid wasting a lot of time perfecting this behavior.

Differential Revision: https://developer.blender.org/D12454

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/node_draw.cc b/source/blender/editors/space_node/node_draw.cc
index aa241071425..10a3285be8b 100644
--- a/source/blender/editors/space_node/node_draw.cc
+++ b/source/blender/editors/space_node/node_draw.cc
@@ -1446,6 +1446,8 @@ static int node_error_type_to_icon(const geo_log::NodeWarningType type)
       return ICON_ERROR;
     case geo_log::NodeWarningType::Info:
       return ICON_INFO;
+    case geo_log::NodeWarningType::Legacy:
+      return ICON_ERROR;
   }
 
   BLI_assert(false);
@@ -1456,6 +1458,8 @@ static uint8_t node_error_type_priority(const geo_log::NodeWarningType type)
 {
   switch (type) {
     case geo_log::NodeWarningType::Error:
+      return 4;
+    case geo_log::NodeWarningType::Legacy:
       return 3;
     case geo_log::NodeWarningType::Warning:
       return 2;