Nodes: refactor derived node tree

This is a complete rewrite of the derived node tree data structure.
It is a much thinner abstraction about `NodeTreeRef` than before.
This gives the user of the derived node tree more control and allows
for greater introspection capabilities (e.g. before muted nodes were
completely abstracted away; this was convenient, but came with
limitations).

Another nice benefit of the new structure is that it is much cheaper
to build, because it does not inline all nodes and sockets in nested
node groups.

Differential Revision: https://developer.blender.org/D10620

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/nodes/shader/nodes/node_shader_value.cc b/source/blender/nodes/shader/nodes/node_shader_value.cc
index 5a8a1b847cc..495c8d12824 100644
--- a/source/blender/nodes/shader/nodes/node_shader_value.cc
+++ b/source/blender/nodes/shader/nodes/node_shader_value.cc
@@ -41,7 +41,7 @@ static int gpu_shader_value(GPUMaterial *mat,
 
 static void sh_node_value_expand_in_mf_network(blender::nodes::NodeMFNetworkBuilder &builder)
 {
-  const bNodeSocket *bsocket = builder.dnode().output(0).bsocket();
+  const bNodeSocket *bsocket = builder.dnode()->output(0).bsocket();
   const bNodeSocketValueFloat *value = (const bNodeSocketValueFloat *)bsocket->default_value;
   builder.construct_and_set_matching_fn<blender::fn::CustomMF_Constant<float>>(value->value);
 }