Todo/feature request

When using masks or other simple 3D elements in composites, doing
a layer re-rendering on a node is a bit clumsy all the time.

This commit does two things to help:
- new hotkey "Z" in node editor automatically finds render layer
  that changed and re-renders it + composites
- option "Auto Render" does same, but then after every transform
  edit in 3D window

The latter is experimental; real & proper system for this requires
full threaded render support (like previews). But it works!

Demo file:
http://download.blender.org/demo/test/auto_composite.blend

Important fix:
After any render, all the render layers were tagged "changed", which
caused any edit to first totally recomposte everthing. Now it only
composites changes.

Implementation notes

- DAG scene flush now sets 'changed' flags in render layer nodes
- Added notifier for 'transform finished' to trigger the update,
  this is temporarily.

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 941083734b4..455e1739b98 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -193,6 +193,7 @@ void			nodeClearActiveID(struct bNodeTree *ntree, short idtype);
 
 void			NodeTagChanged(struct bNodeTree *ntree, struct bNode *node);
 int				NodeTagIDChanged(struct bNodeTree *ntree, struct ID *id);
+void			ntreeClearTags(struct bNodeTree *ntree);
 
 /* ************** Groups ****************** */