gua_varying_world_position = gua_world_position;
gua_varying_normal         = gua_normal;
gua_varying_tangent        = gua_tangent;
gua_varying_bitangent      = gua_bitangent;
gua_varying_texcoords      = gua_texcoords;
gua_varying_color          = gua_color;
gua_varying_roughness      = gua_roughness;
gua_varying_metalness      = gua_metalness;
gua_varying_emissivity     = gua_emissivity;
 
