layout(constant_id=auto) const bool use_emission_map = false;
layout(constant_id=auto) const bool use_reflectivity = false;
layout(constant_id=auto) const bool use_reflectivity_map = false;
-layout(constant_id=auto) const bool use_sky = false;
-layout(constant_id=auto) const bool use_fog = false;
#pragma MSP stage(fragment)
virtual vec4 get_diffuse_color()