Method Alloc

modules/engine/graphics/src/d3d12/D3D12MemAlloc.cpp:1721–1744

template<typename T> template<typename... Types>
T* PoolAllocator<T>::Alloc(Types... args)
{
    for(size_t i = m_ItemBlocks.size(); i--; )
    {
        ItemBlock& block = m_ItemBlocks[i];
        // This block has some free items: Use first one.
        if(block.FirstFreeIndex != UINT32_MAX)
        {
            Item* const pItem = &block.pItems[block.FirstFreeIndex];
            block.FirstFreeIndex = pItem->NextFreeIndex;
            T* result = (T*)&pItem->Value;
            new(result)T(std::forward<Types>(args)...); // Explicit constructor call.
            return result;
        }
    }

    // No block has free item: Create new one and use it.
    ItemBlock& newBlock = CreateNewBlock();
    Item* const pItem = &newBlock.pItems[0];
    newBlock.FirstFreeIndex = pItem->NextFreeIndex;
    T* result = (T*)pItem->Value;
    new(result)T(std::forward<Types>(args)...); // Explicit constructor call.
    return result;
}

template<typename T>
void PoolAllocator<T>::Free(T* ptr)