Adds an update flag to the bNode struct (similar to bNodeTree->update).

This prevents access to non-existent typeinfo during type initialization,
when node types have been removed and such nodes are deleted from older files.
All blenkernel functions now only set the node->update flag instead of directly
calling the update function.  All operators, etc. calling blenkernel functions
to modify nodes should make a ntreeUpdate call afterward (they already did that
anyway).

Editor/RNA/renderer/etc. high-level functions still can do immediate updates by
using nodeUpdate and nodeUpdateID (replacing NodeTagChanged/NodeTagIDChanged
respectively). These old functions were previously used only for setting
compositor node needexec flags and clearing cached data, but have become generic
update functions that require type-specific functionality (i.e. a valid typeinfo
struct).

1 files changed, 6 insertions, 1 deletions

diff --git a/source/blender/nodes/shader/node_shader_tree.c b/source/blender/nodes/shader/node_shader_tree.c
index 28f0f983454..9f3e7ce3c73 100644
--- a/source/blender/nodes/shader/node_shader_tree.c
+++ b/source/blender/nodes/shader/node_shader_tree.c
@@ -85,6 +85,11 @@ static void local_sync(bNodeTree *localtree, bNodeTree *ntree)
 	}
 }
 
+static void update(bNodeTree *ntree)
+{
+	ntreeSetOutput(ntree);
+}
+
 bNodeTreeType ntreeType_Shader = {
 	/* type */				NTREE_SHADER,
 	/* id_name */			"NTShader Nodetree",
@@ -97,7 +102,7 @@ bNodeTreeType ntreeType_Shader = {
 	/* localize */			NULL,
 	/* local_sync */		local_sync,
 	/* local_merge */		NULL,
-	/* update */			NULL,
+	/* update */			update,
 	/* update_node */		NULL
 };