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Fix: Crash when snapping to first key using subframes

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When pressing Ctrl to snap the playhead while scrubbing,
Blender could crash while trying to snap to the first key.
This would happen if the current frame was higher than the
left keyframe, but the difference was less than the `BEZT_BINARYSEARCH_THRESH`.

Pull Request: https://projects.blender.org/blender/blender/pulls/140122
This commit is contained in:
Christoph Lendenfeld
2025-06-10 16:40:07 +02:00
committed by Christoph Lendenfeld
parent 633463c586
commit 27d2d0a23a
1 changed files with 4 additions and 2 deletions
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6
source/blender/editors/animation/keyframes_keylist.cc
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@@ -274,10 +274,12 @@ const ActKeyColumn *ED_keylist_find_closest(const AnimKeylist *keylist, const fl
if (ED_keylist_is_empty(keylist)) {
return nullptr;
}
if (cfra <= keylist->runtime.key_columns.first().cfra) {
/* Need to check against BEZT_BINARYSEARCH_THRESH because `ED_keylist_find_prev` does so as well.
* Not doing that here could cause that function to return a nullptr. */
if (cfra - keylist->runtime.key_columns.first().cfra < BEZT_BINARYSEARCH_THRESH) {
return &keylist->runtime.key_columns.first();
}
if (cfra >= keylist->runtime.key_columns.last().cfra) {
if (cfra - keylist->runtime.key_columns.last().cfra > BEZT_BINARYSEARCH_THRESH) {
keylist->runtime.key_columns.last();
}
const ActKeyColumn *prev = ED_keylist_find_prev(keylist, cfra);