Render API: shader script node for custom shaders.

* Shader script node added, which stores either a link to a text datablock or
  file on disk, and has functions to add and remove sockets.
* Callback RenderEngine.update_script_node(self, node) added for render engines
  to compile the shader and update the node with new sockets.

Thanks to Thomas, Lukas and Dalai for the implementation.

1 files changed, 10 insertions, 5 deletions

diff --git a/release/scripts/startup/bl_ui/space_text.py b/release/scripts/startup/bl_ui/space_text.py
index eca9bc22db9..8a853a09199 100644
--- a/release/scripts/startup/bl_ui/space_text.py
+++ b/release/scripts/startup/bl_ui/space_text.py
@@ -56,12 +56,17 @@ class TEXT_HT_header(Header):
         row.prop(st, "show_syntax_highlight", text="")
 
         if text:
-            row = layout.row()
-            row.operator("text.run_script")
+            osl = text.name.endswith(".osl") or text.name.endswith(".oso")
 
-            row = layout.row()
-            row.active = text.name.endswith(".py")
-            row.prop(text, "use_module")
+            if osl:
+                row = layout.row()
+                row.operator("node.shader_script_update")
+            else:
+                row = layout.row()
+                row.operator("text.run_script")
+
+                row = layout.row()
+                row.prop(text, "use_module")
 
             row = layout.row()
             if text.filepath: