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Merge pull request #3959 from mahiuchun/zero 

glTF2: zero out extra space created by padding.
pull/3964/head^2
Kim Kulling 2021-06-25 00:03:37 +02:00 committed by GitHub
parent bd9b28bc45 b38b65ff49
commit d855ec2472
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 28 additions and 23 deletions
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51
code/AssetLib/glTF2/glTF2Asset.inl
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@ -4,7 +4,6 @@ Open Asset Import Library (assimp)
Copyright (c) 2006-2021, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
@ -777,12 +776,13 @@ inline void Buffer::EncodedRegion_Mark(const size_t pOffset, const size_t pEncod
}
inline void Buffer::EncodedRegion_SetCurrent(const std::string &pID) {
if ((EncodedRegion_Current != nullptr) && (EncodedRegion_Current->ID == pID)) return;
if ((EncodedRegion_Current != nullptr) && (EncodedRegion_Current->ID == pID)) {
return;
}
for (SEncodedRegion *reg : EncodedRegion_List) {
if (reg->ID == pID) {
EncodedRegion_Current = reg;
return;
}
}
@ -832,10 +832,13 @@ inline bool Buffer::ReplaceData_joint(const size_t pBufferData_Offset, const siz
}
inline size_t Buffer::AppendData(uint8_t *data, size_t length) {
size_t offset = this->byteLength;
const size_t offset = this->byteLength;
// Force alignment to 4 bits
Grow((length + 3) & ~3);
const size_t paddedLength = (length + 3) & ~3;
Grow(paddedLength);
memcpy(mData.get() + offset, data, length);
memset(mData.get() + offset + length, 0, paddedLength - length);
return offset;
}
@ -864,9 +867,7 @@ inline void Buffer::Grow(size_t amount) {
//
// struct BufferView
//
inline void BufferView::Read(Value &obj, Asset &r) {
if (Value *bufferVal = FindUInt(obj, "buffer")) {
buffer = r.buffers.Retrieve(bufferVal->GetUint());
}
@ -886,16 +887,21 @@ inline void BufferView::Read(Value &obj, Asset &r) {
}
inline uint8_t *BufferView::GetPointer(size_t accOffset) {
if (!buffer) return nullptr;
if (!buffer) {
return nullptr;
}
uint8_t *basePtr = buffer->GetPointer();
if (!basePtr) return nullptr;
if (!basePtr) {
return nullptr;
}
size_t offset = accOffset + byteOffset;
if (buffer->EncodedRegion_Current != nullptr) {
const size_t begin = buffer->EncodedRegion_Current->Offset;
const size_t end = begin + buffer->EncodedRegion_Current->DecodedData_Length;
if ((offset >= begin) && (offset < end))
if ((offset >= begin) && (offset < end)) {
return &buffer->EncodedRegion_Current->DecodedData[offset - begin];
}
}
return basePtr + offset;
@ -921,18 +927,18 @@ inline void Accessor::Sparse::PatchData(unsigned int elementSize) {
while (pIndices != indicesEnd) {
size_t offset;
switch (indicesType) {
case ComponentType_UNSIGNED_BYTE:
offset = *pIndices;
break;
case ComponentType_UNSIGNED_SHORT:
offset = *reinterpret_cast<uint16_t *>(pIndices);
break;
case ComponentType_UNSIGNED_INT:
offset = *reinterpret_cast<uint32_t *>(pIndices);
break;
default:
// have fun with float and negative values from signed types as indices.
throw DeadlyImportError("Unsupported component type in index.");
case ComponentType_UNSIGNED_BYTE:
offset = *pIndices;
break;
case ComponentType_UNSIGNED_SHORT:
offset = *reinterpret_cast<uint16_t *>(pIndices);
break;
case ComponentType_UNSIGNED_INT:
offset = *reinterpret_cast<uint32_t *>(pIndices);
break;
default:
// have fun with float and negative values from signed types as indices.
throw DeadlyImportError("Unsupported component type in index.");
}
offset *= elementSize;
@ -944,7 +950,6 @@ inline void Accessor::Sparse::PatchData(unsigned int elementSize) {
}
inline void Accessor::Read(Value &obj, Asset &r) {
if (Value *bufferViewVal = FindUInt(obj, "bufferView")) {
bufferView = r.bufferViews.Retrieve(bufferViewVal->GetUint());
}