cbuffer cbuffer_ubo : register(b0) { uint4 ubo[1]; }; struct S { int data[64]; }; RWByteAddressBuffer result : register(u1); [numthreads(1, 1, 1)] void f() { S s = (S)0; { int tint_symbol_2[64] = s.data; tint_symbol_2[asint(ubo[0].x)] = 1; s.data = tint_symbol_2; } result.Store(0u, asuint(s.data[3])); return; }