Shading: Refactor Math node and use dynamic inputs.

- Implement dynamic inputs. The second input is now unavailable in single
operand math operators.
- Reimplemenet the clamp option using graph expansion for Cycles.
- Clean up code and unify naming between Blender and Cycles.
- Remove unused code.

Reviewers: brecht

Differential Revision: https://developer.blender.org/D5481

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 9b2db5acd3b..7d427cb7799 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -615,6 +615,7 @@ void nodeUpdateInternalLinks(struct bNodeTree *ntree, struct bNode *node);
 
 int nodeSocketIsHidden(struct bNodeSocket *sock);
 void ntreeTagUsedSockets(struct bNodeTree *ntree);
+void nodeSetSocketAvailability(struct bNodeSocket *sock, bool is_available);
 
 /* Node Clipboard */
 void BKE_node_clipboard_init(struct bNodeTree *ntree);