#version 450

// iter1 minimal compute probe — writes a known pattern to a storage buffer.
// Single workgroup, single invocation. The simplest possible compute workload.
//
// Result: data[0] = 0xCAFEBABE
// Anything else (or no write at all, or a hang, or a GPU fault) is a finding.

layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

layout(set = 0, binding = 0, std430) buffer Out {
    uint data[];
};

void main() {
    data[0] = 0xCAFEBABEu;
}