fixing command pool

src/vulkan/CommandPool.zig

@@ -70,20 +70,26 @@ pub fn allocateCommandBuffers(self: *Self, info: *const vk.CommandBufferAllocate
 
 pub fn freeCommandBuffers(self: *Self, cmds: []*Dispatchable(CommandBuffer)) VkError!void {
     // Ugly method but it works well
+    var len: usize = 0;
     for (cmds) |cmd| {
         if (std.mem.indexOf(*Dispatchable(CommandBuffer), self.buffers.items, &[_]*Dispatchable(CommandBuffer){cmd})) |i| {
             const save = self.buffers.orderedRemove(i);
             // Append the now free command buffer at the end of the pool
             self.buffers.appendAssumeCapacity(save);
+            len += 1;
         }
     }
-    self.first_free_buffer_index -= cmds.len;
+    const new_first_free_buffer_index, const has_overflown = @subWithOverflow(self.first_free_buffer_index, len);
+    if (has_overflown == 0) {
+        self.first_free_buffer_index = new_first_free_buffer_index;
+    } else {
+        std.log.scoped(.CommandPool).warn("Avoided an underflow. This should not happen, please fill an issue.", .{});
+    }
 }
 
 pub fn destroy(self: *Self, allocator: std.mem.Allocator) void {
     for (self.buffers.items) |non_dis_cmd| {
-        non_dis_cmd.object.destroy(allocator);
-        non_dis_cmd.destroy(allocator);
+        non_dis_cmd.intrusiveDestroy(allocator);
     }
     self.buffers.deinit(allocator);
     self.vtable.destroy(self, allocator);
@@ -91,4 +97,12 @@ pub fn destroy(self: *Self, allocator: std.mem.Allocator) void {
 
 pub inline fn reset(self: *Self, flags: vk.CommandPoolResetFlags) VkError!void {
     try self.vtable.reset(self, flags);
+    if (flags.release_resources_bit) {
+        const allocator = self.host_allocator.allocator();
+        for (self.buffers.items) |non_dis_cmd| {
+            non_dis_cmd.intrusiveDestroy(allocator);
+        }
+        self.buffers.shrinkAndFree(allocator, BUFFER_POOL_BASE_CAPACITY);
+        self.buffers.clearRetainingCapacity();
+    }
 }

src/vulkan/logger/ThreadSafeManager.zig

@@ -33,9 +33,6 @@ pub fn deinit(self: *Self) void {
         }
     }
     if (self.managers.count() == 0) {
-        self.mutex.lock();
-        self.mutex.unlock();
-
         self.managers.deinit(self.allocator.allocator());
         self.* = .init;
     }