Method GcCompactTransientWindowBuffers

src/third-party/imgui/imgui.cpp:3325–3335

Free up/compact internal window buffers, we can use this when a window becomes unused. Not freed: - ImGuiWindow, ImGuiWindowSettings, Name, StateStorage, ColumnsStorage (may hold useful data) This should have no noticeable visual effect. When the window reappear however, expect new allocation/buffer growth/copy cost.

// - ImGuiWindow, ImGuiWindowSettings, Name, StateStorage, ColumnsStorage (may hold useful data)
// This should have no noticeable visual effect. When the window reappear however, expect new allocation/buffer growth/copy cost.
void ImGui::GcCompactTransientWindowBuffers(ImGuiWindow* window)
{
    window->MemoryCompacted = true;
    window->MemoryDrawListIdxCapacity = window->DrawList->IdxBuffer.Capacity;
    window->MemoryDrawListVtxCapacity = window->DrawList->VtxBuffer.Capacity;
    window->IDStack.clear();
    window->DrawList->_ClearFreeMemory();
    window->DC.ChildWindows.clear();
    window->DC.ItemWidthStack.clear();
    window->DC.TextWrapPosStack.clear();
}

void ImGui::GcAwakeTransientWindowBuffers(ImGuiWindow* window)
{