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Viewports: store ImGuiViewport* ParentViewport pointer as well. Backends: SDL3, Win32: use this pointer to reduce lookups. (#8948)

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ocornut 2025-09-30 18:39:34 +02:00
parent e7aa0dec5b
commit 3563f1e270
5 changed files with 27 additions and 16 deletions
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11
imgui.cpp
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@ -17023,11 +17023,22 @@ void ImGui::WindowSyncOwnedViewport(ImGuiWindow* window, ImGuiWindow* parent_win
// Update parent viewport ID
// (the !IsFallbackWindow test mimic the one done in WindowSelectViewport())
if (window->WindowClass.ParentViewportId != (ImGuiID)-1)
{
ImGuiID old_parent_viewport_id = window->Viewport->ParentViewportId;
window->Viewport->ParentViewportId = window->WindowClass.ParentViewportId;
if (window->Viewport->ParentViewportId != old_parent_viewport_id)
window->Viewport->ParentViewport = FindViewportByID(window->Viewport->ParentViewportId);
}
else if ((window_flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_Tooltip)) && parent_window_in_stack && (!parent_window_in_stack->IsFallbackWindow || parent_window_in_stack->WasActive))
{
window->Viewport->ParentViewport = parent_window_in_stack->Viewport;
window->Viewport->ParentViewportId = parent_window_in_stack->Viewport->ID;
}
else
{
window->Viewport->ParentViewport = g.IO.ConfigViewportsNoDefaultParent ? NULL : GetMainViewport();
window->Viewport->ParentViewportId = g.IO.ConfigViewportsNoDefaultParent ? 0 : IMGUI_VIEWPORT_DEFAULT_ID;
}
}
// Called by user at the end of the main loop, after EndFrame()