| RWByteAddressBuffer a : register(u0, space0); |
| |
| struct atomic_compare_exchange_weak_ret_type { |
| uint old_value; |
| bool exchanged; |
| }; |
| |
| atomic_compare_exchange_weak_ret_type tint_atomicCompareExchangeWeak(RWByteAddressBuffer buffer, uint offset, uint compare, uint value) { |
| atomic_compare_exchange_weak_ret_type result=(atomic_compare_exchange_weak_ret_type)0; |
| buffer.InterlockedCompareExchange(offset, compare, value, result.old_value); |
| result.exchanged = result.old_value == compare; |
| return result; |
| } |
| |
| |
| [numthreads(16, 1, 1)] |
| void main() { |
| uint value = 42u; |
| const atomic_compare_exchange_weak_ret_type result = tint_atomicCompareExchangeWeak(a, 0u, 0u, value); |
| return; |
| } |