pipe_topology_snapshot
struct pipe_topology_snapshot *current_snapshot = &dc->debug_data.topology_history.snapshots[dc->debug_data.topology_history.current_snapshot_index];
struct pipe_topology_snapshot *current_snapshot = &dc->debug_data.topology_history.snapshots[dc->debug_data.topology_history.current_snapshot_index];
struct pipe_topology_snapshot snapshots[MAX_TOPOLOGY_SNAPSHOTS];