// shaderSource void setShaderSource( std::string const & src ) { resetIfChanged(src, _shaderSource); }
// diffuseEnvironmentId void setDiffuseEnvironmentId( GLuint dId ) { resetIfChanged(dId, _diffuseEnvironmentId); }
// specularEnvironmentId void setSpecularEnvironmentId( GLuint eId ) { resetIfChanged(eId, _specularEnvironmentId); }
// ptexOcclusionValid void setPtexOcclusionValid( bool pov ) { resetIfChanged(pov, _ptexOcclusionValid); }
// ptexDisplacementValid void setPtexDisplacementValid( bool pdv ) { resetIfChanged(pdv, _ptexDisplacementValid); }
// ptexColorValid void setPtexColorValid( bool pcv ) { resetIfChanged(pcv, _ptexColorValid); }
// isAdaptive void setIsAdaptive( bool ad ) { resetIfChanged(ad, _isAdaptive); }
/* diffuseId */ void setDiffuseId( GLuint dId ) { resetIfChanged(dId, _diffuseId); }