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MeshHandler: Fix weightsData dequantization error #338

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Merged
K0lb3 merged 2 commits into from
Aug 8, 2025
Merged

MeshHandler: Fix weightsData dequantization error #338

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2b9f60a
MeshHandler: Fix `weightsData` dequantization error
mos9527 Jul 30, 2025
f24c3ef
MeshHandler: Remove unnecessary list comprehension
mos9527 Aug 2, 2025
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6 changes: 3 additions & 3 deletions UnityPy/helpers/MeshHelper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -583,7 +583,7 @@ def decompress_compressed_mesh(self):
# Skin
if m_CompressedMesh.m_Weights.m_NumItems > 0:
weightsData = unpack_ints(m_CompressedMesh.m_Weights)
weightsData = [weight / 31 for weight in weightsData]
weightsData = [weight for weight in weightsData]
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boneIndicesData = unpack_ints(m_CompressedMesh.m_BoneIndices)

vertexIndex = 0
Expand All @@ -596,14 +596,14 @@ def decompress_compressed_mesh(self):
boneIndicesIterator = iter(boneIndicesData)
for weight, boneIndex in zip(weightsData, boneIndicesIterator):
# read bone index and weight
self.m_BoneWeights[vertexIndex][j] = weight
self.m_BoneWeights[vertexIndex][j] = weight / 31
self.m_BoneIndices[vertexIndex][j] = boneIndex

j += 1
sum += weight

# the weights add up to one, continue with the next vertex.
if sum >= 1.0:
if sum >= 31:
j = 4
# set weights and boneIndices to 0,
# already done on init
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