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未使用の頂点が後ろにある場合に削除する

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#610 対策
This commit is contained in:
ousttrue 2020-11-13 20:18:08 +09:00
parent 0bc6d1f222
commit abe2b82ddc
1 changed files with 39 additions and 0 deletions
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39
Assets/VRM/UniGLTF/Scripts/IO/MeshImporter.cs
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@ -420,6 +420,43 @@ namespace UniGLTF
}
}
}
static void Truncate<T>(List<T> list, int maxIndex)
{
if (list == null)
{
return;
}
var count = maxIndex + 1;
if (list.Count > count)
{
// Debug.LogWarning($"remove {count} to {list.Count}");
list.RemoveRange(count, list.Count - count);
}
}
//
// https://github.com/vrm-c/UniVRM/issues/610
//
// VertexBuffer の後ろに未使用頂点がある場合に削除する
//
public void DropUnusedVertices()
{
var maxIndex = m_subMeshes.SelectMany(x => x).Max();
Truncate(m_positions, maxIndex);
Truncate(m_normals, maxIndex);
Truncate(m_uv, maxIndex);
Truncate(m_uv2, maxIndex);
Truncate(m_colors, maxIndex);
Truncate(m_boneWeights, maxIndex);
Truncate(m_tangents, maxIndex);
foreach (var blendshape in m_blendShapes)
{
Truncate(blendshape.Positions, maxIndex);
Truncate(blendshape.Normals, maxIndex);
Truncate(blendshape.Tangents, maxIndex);
}
}
}
static bool HasSharedVertexBuffer(glTFMesh gltfMesh)
@ -455,6 +492,8 @@ namespace UniGLTF
meshContext.RenameBlendShape(gltfMesh);
meshContext.DropUnusedVertices();
return meshContext;
}