|  | groupshared uint wg[4]; | 
|  |  | 
|  | struct tint_symbol_1 { | 
|  | uint local_invocation_index : SV_GroupIndex; | 
|  | }; | 
|  |  | 
|  | void compute_main_inner(uint local_invocation_index) { | 
|  | { | 
|  | for(uint idx = local_invocation_index; (idx < 4u); idx = (idx + 1u)) { | 
|  | const uint i = idx; | 
|  | uint atomic_result = 0u; | 
|  | InterlockedExchange(wg[i], 0u, atomic_result); | 
|  | } | 
|  | } | 
|  | GroupMemoryBarrierWithGroupSync(); | 
|  | uint atomic_result_1 = 0u; | 
|  | InterlockedExchange(wg[1], 1u, atomic_result_1); | 
|  | } | 
|  |  | 
|  | [numthreads(1, 1, 1)] | 
|  | void compute_main(tint_symbol_1 tint_symbol) { | 
|  | compute_main_inner(tint_symbol.local_invocation_index); | 
|  | return; | 
|  | } |