|  | #include <metal_stdlib> | 
|  |  | 
|  | using namespace metal; | 
|  |  | 
|  | template<typename T, size_t N> | 
|  | struct tint_array { | 
|  | const constant T& operator[](size_t i) const constant { return elements[i]; } | 
|  | device T& operator[](size_t i) device { return elements[i]; } | 
|  | const device T& operator[](size_t i) const device { return elements[i]; } | 
|  | thread T& operator[](size_t i) thread { return elements[i]; } | 
|  | const thread T& operator[](size_t i) const thread { return elements[i]; } | 
|  | threadgroup T& operator[](size_t i) threadgroup { return elements[i]; } | 
|  | const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; } | 
|  | T elements[N]; | 
|  | }; | 
|  |  | 
|  | void compute_main_inner(uint local_invocation_index, threadgroup tint_array<atomic_uint, 4>* const tint_symbol) { | 
|  | for(uint idx = local_invocation_index; (idx < 4u); idx = (idx + 1u)) { | 
|  | uint const i = idx; | 
|  | atomic_store_explicit(&((*(tint_symbol))[i]), 0u, memory_order_relaxed); | 
|  | } | 
|  | threadgroup_barrier(mem_flags::mem_threadgroup); | 
|  | atomic_store_explicit(&((*(tint_symbol))[1]), 1u, memory_order_relaxed); | 
|  | } | 
|  |  | 
|  | kernel void compute_main(uint local_invocation_index [[thread_index_in_threadgroup]]) { | 
|  | threadgroup tint_array<atomic_uint, 4> tint_symbol_1; | 
|  | compute_main_inner(local_invocation_index, &(tint_symbol_1)); | 
|  | return; | 
|  | } | 
|  |  |