Made EndFrame() assertion for key modifiers being unchanged during the frame more lenient. (#3575)

This commit is contained in:
ocornut
2020-11-11 18:07:29 +01:00
parent a3f79104df
commit dcfb986fa8
2 changed files with 10 additions and 3 deletions

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@ -6905,9 +6905,13 @@ static void ImGui::ErrorCheckEndFrameSanityChecks()
// Verify that io.KeyXXX fields haven't been tampered with. Key mods should not be modified between NewFrame() and EndFrame()
// One possible reason leading to this assert is that your backends update inputs _AFTER_ NewFrame().
const ImGuiKeyModFlags expected_key_mod_flags = GetMergedKeyModFlags();
IM_ASSERT(g.IO.KeyMods == expected_key_mod_flags && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods");
IM_UNUSED(expected_key_mod_flags);
// It is known that when some modal native windows called mid-frame takes focus away, some backends such as GLFW will
// send key release events mid-frame. This would normally trigger this assertion and lead to sheared inputs.
// We silently accommodate for this case by ignoring/ the case where all io.KeyXXX modifiers were released (aka key_mod_flags == 0),
// while still correctly asserting on mid-frame key press events.
const ImGuiKeyModFlags key_mod_flags = GetMergedKeyModFlags();
IM_ASSERT((key_mod_flags == 0 || g.IO.KeyMods == key_mod_flags) && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods");
IM_UNUSED(key_mod_flags);
// Report when there is a mismatch of Begin/BeginChild vs End/EndChild calls. Important: Remember that the Begin/BeginChild API requires you
// to always call End/EndChild even if Begin/BeginChild returns false! (this is unfortunately inconsistent with most other Begin* API).