Fix error rendering Cycles shader nodes from before 2013

After the recent changes to use socket identifiers instead of names.

1 files changed, 9 insertions, 1 deletions

diff --git a/intern/cycles/blender/blender_shader.cpp b/intern/cycles/blender/blender_shader.cpp
index 24819bacbb5..de7b2761d00 100644
--- a/intern/cycles/blender/blender_shader.cpp
+++ b/intern/cycles/blender/blender_shader.cpp
@@ -1020,13 +1020,21 @@ static ShaderInput *node_find_input_by_name(ShaderNode *node, BL::NodeSocket &b_
     input = node->input(name.c_str());
 
     if (!input) {
-      /* Different internal numbering of two sockets with same name. */
+      /* Different internal numbering of two sockets with same name.
+       * Note that the Blender convention for unique socket names changed
+       * from . to _ at some point, so we check both to handle old files. */
       if (string_endswith(name, "_001")) {
         string_replace(name, "_001", "2");
       }
+      else if (string_endswith(name, ".001")) {
+        string_replace(name, ".001", "2");
+      }
       else if (string_endswith(name, "_002")) {
         string_replace(name, "_002", "3");
       }
+      else if (string_endswith(name, ".002")) {
+        string_replace(name, ".002", "3");
+      }
       else {
         name += "1";
       }