883         auto a_first = a_at_end ? 0 : it_a->first;  in ValidateViAgainstVsInputs()  local
886         if (!a_at_end && (b_at_end || a_first < b_first)) {  in ValidateViAgainstVsInputs()
890                         "Vertex attribute at location %d not consumed by vertex shader", a_first)) {  in ValidateViAgainstVsInputs()
895         } else if (!b_at_end && (a_at_end || b_first < a_first)) {  in ValidateViAgainstVsInputs()
909 …   string_VkFormat(it_a->second->format), a_first, DescribeType(vs, it_b->second.type_id).c_str());  in ValidateViAgainstVsInputs()
2109         auto a_first = a_at_end ? std::make_pair(0u, 0u) : a_it->first;  in ValidateInterfaceBetweenStages()  local
2112         if (b_at_end || ((!a_at_end) && (a_first < b_first))) {  in ValidateInterfaceBetweenStages()
2115 … writes to output location %u.%u which is not consumed by %s", producer_stage->name, a_first.first,  in ValidateInterfaceBetweenStages()
2116                             a_first.second, consumer_stage->name);  in ValidateInterfaceBetweenStages()
2118         } else if (a_at_end || a_first > b_first) {  in ValidateInterfaceBetweenStages()
2134 …                    "Type mismatch on location %u.%u: '%s' vs '%s'", a_first.first, a_first.second,  in ValidateInterfaceBetweenStages()
2142 …   a_first.first, a_first.second, a_it->second.is_patch ? "patch" : "vertex", producer_stage->name,  in ValidateInterfaceBetweenStages()
2148 …      "Decoration mismatch on location %u.%u: %s and %s stages differ in precision", a_first.first,  in ValidateInterfaceBetweenStages()
2149                                 a_first.second, producer_stage->name, consumer_stage->name);  in ValidateInterfaceBetweenStages()