From Wojciech Lewandowski, VirtualProgram example that illustrates how one can create a custom system for composing shaders within the scene graph.

examples/osgvirtualprogram/CMakeLists.txt

@@ -0,0 +1,11 @@
+SET(TARGET_SRC
+    VirtualProgram.cpp
+    CreateSimpleHierachy.cpp
+    CreateAdvancedHierachy.cpp
+    osgvirtualprogram.cpp
+)
+SET(TARGET_H
+    VirtualProgram.h
+)
+
+SETUP_EXAMPLE(osgvirtualprogram)