#version 450
#extension GL_EXT_shader_explicit_arithmetic_types_int64 : enable
#extension GL_EXT_shader_atomic_int64 : enable
#extension GL_KHR_memory_scope_semantics : enable

layout(set = 0, binding = 0) buffer ssbo { uint64_t y; };
layout(set = 0, binding = 1) uniform ubo { uint64_t z; };

void main() {
    atomicStore(y, z, gl_ScopeDevice, gl_StorageSemanticsBuffer, gl_SemanticsRelaxed);
}