fix

src/__render_command.zig

@@ -27,7 +27,6 @@ pub fn refresh_all() void {
     for (render_cmd_list.?.items) |cmd| {
         cmd.*.refresh();
     }
-    render_command.mutex.unlock();
 }
 
 pub fn destroy() void {

src/__vulkan.zig

@@ -498,9 +498,9 @@ fn recordCommandBuffer(commandBuffer: **render_command, fr: u32) void {
 
         shape_list.resize(0) catch unreachable;
 
-        commandBuffer.*.*.objs_mutex.lock();
+        commandBuffer.*.*.objs_lock.lockShared();
         const objs = __system.allocator.dupe(graphics.iobject, commandBuffer.*.*.scene.?) catch unreachable;
-        commandBuffer.*.*.objs_mutex.unlock();
+        commandBuffer.*.*.objs_lock.unlockShared();
         defer __system.allocator.free(objs);
 
         if (__system.cmd_op_wait.cmpxchgStrong(true, false, .acq_rel, .monotonic) == null) {

src/render_command.zig

@@ -26,7 +26,7 @@ __command_buffers: [MAX_FRAME][]vk.CommandBuffer = undefined,
 scene: ?[]graphics.iobject = null,
 offscreen_image: ?*graphics.image = null,
 ///!you have to lock this add or modify iobject 'scene'
-objs_mutex: std.Thread.Mutex = .{},
+objs_lock: std.Thread.RwLock = .{},
 const Self = @This();
 
 pub fn init() *Self {