【ZeloEngine】ImGui调试

docking窗口合并时Assertion Failed

报错分析

Assertion failed: (g.CurrentWindowStack.Size == 1) && "Mismatched Begin/BeginChild vs End/EndChild calls: did you forget to call End/EndChild?", file C:\Users\zoloypzuo\Documents\GitHub\ZeloEngine\Dep\src\imgui\imgui.cpp, line 7903

Begin和End没有成对

定位问题

这种问题怎么查呢？Begin和End很多，而且是某一帧发生的

其实和GL调试有一定相似性，最原始的方法是hook所有GL调用，把函数名和参数打印出来

Zelo所有imgui逻辑都是导出lua的，所以很好做hook

这里可以hook特定imgui call，也就是Begin和End

ENABLE_HOOK_DEBUG_IMGUI = true
if ENABLE_HOOK_DEBUG_IMGUI then
    local _ImGui = {}
    for name, fn in pairs(ImGui) do
        _ImGui[name] = function(...)
            print("ImGui." .. name, ...)
            return fn(...)
        end
    end

    ImGui = _ImGui
end

然后启动游戏，复现问题

日志打出来了

[18:18:44.928] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Window	true	 
[18:18:44.944] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Entity	true	 
[18:18:44.960] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Resources	true	 
[18:18:44.976] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Layout	true	 
[18:18:44.992] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Tool	true	 
[18:18:45.008] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Help	true	 
[18:18:45.024] [lua] [debug] main_initialize.lua(73,1) ImGui.BeginMenu	Sandbox	true	 
[18:18:45.040] [lua] [debug] main_initialize.lua(73,1) ImGui.EndMainMenuBar	 
[18:18:45.056] [lua] [debug] main_initialize.lua(73,1) ImGui.SetNextWindowSizeConstraints	0	0	10000	10000	 
[18:18:45.072] [lua] [debug] main_initialize.lua(73,1) ImGui.Begin	Hierarchy##2	true	32792	 
[18:18:45.088] [lua] [debug] main_initialize.lua(73,1) ImGui.SetNextWindowSizeConstraints	0	0	10000	10000	 
[18:18:45.104] [lua] [debug] main_initialize.lua(73,1) ImGui.Begin	Inspector##3	true	32792	 
[18:18:45.120] [lua] [debug] main_initialize.lua(73,1) ImGui.End	 
Assertion failed: (g.CurrentWindowStack.Size == 1) && "Mismatched Begin/BeginChild vs End/EndChild calls: did you forget to call End/EndChild?", file C:\Users\zoloypzuo\Documents\GitHub\ZeloEngine\Dep\src\imgui\imgui.cpp, line 7903