BansheeEngine/Documentation/glslangCompilationGuide.txt

Certain Banshee specific modification is required before compiling glslang:
 - Add getAttributeTType to TProgram's public interface:
  - Method signature: const TType* getAttributeTType(int index) const;
  - Method implementation: const TType* TProgram::getAttributeTType(int index) const	 { return reflection->getAttribute(index).getType(); }