Fix ImGui Viewports

[Fexty12573]

Summary

When enabling ImGui Viewports in the ImGui Config, there is an issue where, when you drag an ImGui window outside the main viewport, the entire game will refuse to take inputs, and partially freeze. This of course also goes for the ImGui windows.

Possible Causes

The game stops responding when this bug happens, which indicates that there is something wrong with the WndProc. When a window stops processing events, windows marks it as not responding.

Relevant Files

• To enable the viewports feature, uncomment line 23 in Renderer.cs
• The current WndProc is inside D3DModule.cpp