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Fix: GPv3: Crash converting vertex groups #120170

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Falk David merged 1 commits from filedescriptor/blender:fix-gpv3-crash-convert-weight-group into main 2024-04-03 11:40:21 +02:00
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8
source/blender/blenkernel/intern/grease_pencil_convert_legacy.cc
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@ -172,6 +172,10 @@ static void find_used_vertex_groups(const bGPDframe &gpf,
Span<MDeformVert> dverts = {gps->dvert, gps->totpoints};
for (const MDeformVert &dvert : dverts) {
for (const MDeformWeight &weight : Span<MDeformWeight>{dvert.dw, dvert.totweight}) {
if (weight.def_nr >= dvert.totweight) {
/* Ignore invalid deform weight group indices. */
continue;
}
is_group_used[weight.def_nr] = true;
}
}
@ -362,6 +366,10 @@ void legacy_gpencil_frame_to_grease_pencil_drawing(const bGPDframe &gpf,
dst_dvert.dw = static_cast<MDeformWeight *>(MEM_dupallocN(src_dvert.dw));
const MutableSpan<MDeformWeight> vertex_weights = {dst_dvert.dw, dst_dvert.totweight};
for (MDeformWeight &weight : vertex_weights) {
if (weight.def_nr >= dst_dvert.totweight) {
/* Ignore invalid deform weight group indices. */
continue;
}
/* Map def_nr to the reduced vertex group list. */
weight.def_nr = stroke_def_nr_map[weight.def_nr];
}