const QueueSharingMode = @This();

const vk = @import("vulkan");

threadlocal var qsm: QueueSharingMode = undefined;

buffer: [2]u32,
sharing_mode: vk.SharingMode,
queue_family_index_count: u32,
p_queue_family_indices: ?[*]const u32,

pub fn resolve(a: u32, b: u32) *const QueueSharingMode {
    const self = &qsm;
    const same = a == b;
    self.buffer = .{ a, b };
    self.sharing_mode = if (same) .exclusive else .concurrent;
    self.queue_family_index_count = if (same) 0 else 2;
    self.p_queue_family_indices = if (same) null else &self.buffer;
    return self;
}