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Fix segfault from mid-frame font atlas rebuild

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The edit-mode font switcher called LoadFont() directly between
NewFrame() and Render(), invalidating the font atlas ImGui was
actively using. Use RequestLoadFont() to defer the change to
the safe inter-frame point, matching the existing zoom pattern.

Also default code_font/writing_font to the main font when not
explicitly configured, preventing a mismatch that triggered the
switch on every first frame.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kyle Isom
2026-03-25 02:07:31 -07:00
parent 23f04e4357
commit d7e35727f1
2 changed files with 28 additions and 5 deletions
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4
ImGuiFrontend.cc
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@@ -577,9 +577,7 @@ GUIFrontend::Step(Editor &ed, bool &running)
if (fr.CurrentFontName() != expected && fr.HasFont(expected)) {
float sz = fr.CurrentFontSize();
if (sz <= 0.0f) sz = config_.font_size;
fr.LoadFont(expected, sz);
ImGui_ImplOpenGL3_DestroyFontsTexture();
ImGui_ImplOpenGL3_CreateFontsTexture();
fr.RequestLoadFont(expected, sz);
}
}
}