When in some cases, ImGui will make the memory will grow infinitely.

[wzhengsen]

• adxe version:latest
• devices test on:Windows 10
• developing environments
  • NDK version: r19c
  • Xcode version: 12.4
  • VS/msvctools version: Visual Studio 2019(16.11)/14.29.30133
  • cmake version:
    Steps to Reproduce:

1. See code:

if (ImGui::Begin("Window")) {
    if (ImGui::BeginChild("Child")) {
        ImGui::Text("Hello");
    }
    ImGui::EndChild();
}
ImGui::End();

2.The memory now looks fine:

3.Now I move the ImGui window out of the main window:

[halx99]

There are some issues about memory leak:

• Memory leak with with viewports when using OpenGL3 backend ocornut/imgui#4468
• multi-viewport memory leaks ocornut/imgui#4504

[wzhengsen]

When I use a discrete graphics card, the memory leak disappears.