Method Save

Source/Engine/Content/Assets/ModelBase.cpp:222–306

#if USE_EDITOR

bool ModelBase::Save(bool withMeshDataFromGpu, const StringView& path)
{
    // Validate state
    if (OnCheckSave(path))
        return true;
    if (withMeshDataFromGpu && IsInMainThread())
    {
        LOG(Error, "To save model with GPU mesh buffers it needs to be called from the other thread (not the main thread).");
        return true;
    }
    if (IsVirtual() && !withMeshDataFromGpu)
    {
        LOG(Error, "To save virtual model asset you need to specify 'withMeshDataFromGpu' (it has no other storage container to get data).");
        return true;
    }
    auto chunkLocks = Storage ? Storage->Lock() : FlaxStorage::LockData();
    ScopeLock lock(Locker);

    // Use a temporary chunks for data storage for virtual assets
    FlaxChunk* tmpChunks[ASSET_FILE_DATA_CHUNKS];
    Platform::MemoryClear(tmpChunks, sizeof(tmpChunks));
    Array<FlaxChunk> chunks;
    if (IsVirtual())
        chunks.Resize(ASSET_FILE_DATA_CHUNKS);
    Function<FlaxChunk*(int32)> getChunk = [&](int32 index) -> FlaxChunk* {
        return IsVirtual() ? tmpChunks[index] = &chunks[index] : GetOrCreateChunk(index);
    };

    // Save LODs data
    const int32 lodsCount = GetLODsCount();
    if (withMeshDataFromGpu)
    {
        // Fetch runtime mesh data (from GPU)
        MemoryWriteStream meshesStream;
        for (int32 lodIndex = 0; lodIndex < lodsCount; lodIndex++)
        {
            meshesStream.SetPosition(0);
            if (SaveLOD(meshesStream, lodIndex))
                return true;
            auto lodChunk = getChunk(MODEL_LOD_TO_CHUNK_INDEX(lodIndex));
            if (lodChunk == nullptr)
                return true;
            lodChunk->Data.Copy(ToSpan(meshesStream));
        }
    }
    else if (!IsVirtual())
    {
        // Load all chunks with a mesh data
        for (int32 lodIndex = 0; lodIndex < lodsCount; lodIndex++)
        {
            if (LoadChunk(MODEL_LOD_TO_CHUNK_INDEX(lodIndex)))
                return true;
        }
    }

    // Save custom data
    if (Save(withMeshDataFromGpu, getChunk))
        return true;