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Avoid crash when generating LODs on meshes with non-finite vertices. #82285

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Sep 25, 2023
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Avoid crash when generating LODs on meshes with non-finite vertices. #82285

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4 changes: 4 additions & 0 deletions scene/resources/importer_mesh.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -506,6 +506,10 @@ void ImporterMesh::generate_lods(float p_normal_merge_angle, float p_normal_spli
const Vector3 &v2 = vertices_ptr[new_indices_ptr[j + 2]];
Vector3 face_normal = vec3_cross(v0 - v2, v0 - v1);
float face_area = face_normal.length(); // Actually twice the face area, since it's the same error_factor on all faces, we don't care
if (!Math::is_finite(face_area) || face_area == 0) {
WARN_PRINT_ONCE("Ignoring face with non-finite normal in LOD generation.");
continue;
}

Vector3 dir = face_normal / face_area;
int ray_count = CLAMP(5.0 * face_area * error_factor, 16, 64);
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