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fix export gltf2, The JOINTS_0 componentType is incorrect

pull/1917/head
wuxiaoqian 2018-04-26 10:56:56 +08:00
parent 80799bdbf9
commit 6b4caa0f12
3 changed files with 44 additions and 0 deletions
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1
code/glTF2Asset.h
View File

@ -601,6 +601,7 @@ namespace glTF2
/// \param [in] pReplace_Count - count of bytes in new data.
/// \return true - if successfully replaced, false if input arguments is out of range.
bool ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t* pReplace_Data, const size_t pReplace_Count);
bool ReplaceData_joint(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t* pReplace_Data, const size_t pReplace_Count);
size_t AppendData(uint8_t* data, size_t length);
void Grow(size_t amount);

23
code/glTF2Asset.inl
View File

@ -481,6 +481,29 @@ uint8_t* new_data;
return true;
}
inline bool Buffer::ReplaceData_joint(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t* pReplace_Data, const size_t pReplace_Count)
{
const size_t new_data_size = byteLength + pReplace_Count - pBufferData_Count;
uint8_t* new_data;
if((pBufferData_Count == 0) || (pReplace_Count == 0) || (pReplace_Data == nullptr)) return false;
new_data = new uint8_t[new_data_size];
// Copy data which place before replacing part.
memcpy(new_data, mData.get(), pBufferData_Offset);
// Copy new data.
memcpy(&new_data[pBufferData_Offset], pReplace_Data, pReplace_Count);
// Copy data which place after replacing part.
memcpy(&new_data[pBufferData_Offset + pReplace_Count], &mData.get()[pBufferData_Offset + pBufferData_Count]
, new_data_size - (pBufferData_Offset + pReplace_Count)
);
// Apply new data
mData.reset(new_data, std::default_delete<uint8_t[]>());
byteLength = new_data_size;
return true;
}
inline size_t Buffer::AppendData(uint8_t* data, size_t length)
{

20
code/glTF2Exporter.cpp
View File

@ -623,6 +623,26 @@ void ExportSkin(Asset& mAsset, const aiMesh* aimesh, Ref<Mesh>& meshRef, Ref<Buf
Mesh::Primitive& p = meshRef->primitives.back();
Ref<Accessor> vertexJointAccessor = ExportData(mAsset, skinRef->id, bufferRef, aimesh->mNumVertices, vertexJointData, AttribType::VEC4, AttribType::VEC4, ComponentType_FLOAT);
if ( vertexJointAccessor ) {
unsigned int offset = vertexJointAccessor->bufferView->byteOffset;
unsigned int bytesLen = vertexJointAccessor->bufferView->byteLength;
unsigned int s_bytesPerComp= ComponentTypeSize(ComponentType_UNSIGNED_SHORT);
unsigned int bytesPerComp = ComponentTypeSize(vertexJointAccessor->componentType);
unsigned int s_bytesLen = bytesLen * s_bytesPerComp / bytesPerComp;
Ref<Buffer> buf = vertexJointAccessor->bufferView->buffer;
uint8_t* arrys = new uint8_t[s_bytesLen];
unsigned int i = 0;
for ( unsigned int j = 0; j <= bytesLen; j += bytesPerComp ){
size_t len_p = offset + j;
float f_value = *(float *)&buf->GetPointer()[len_p];
unsigned short c = static_cast<unsigned short>(f_value);
uint8_t* data = new uint8_t[s_bytesPerComp];
data = (uint8_t*)&c;
memcpy(&arrys[i*s_bytesPerComp], data, s_bytesPerComp);
++i;
}
buf->ReplaceData_joint(offset, bytesLen, arrys, s_bytesLen);
vertexJointAccessor->componentType = ComponentType_UNSIGNED_SHORT;
p.attributes.joint.push_back( vertexJointAccessor );
}