Method AllocateMemory

include/vk_mem_alloc.h:14586–14683

}

VkResult VmaAllocator_T::AllocateMemory(
    VkMemoryRequirements vkMemReq,
    bool requiresDedicatedAllocation,
    bool prefersDedicatedAllocation,
    VkBuffer dedicatedBuffer,
    VkImage dedicatedImage,
    VmaBufferImageUsage dedicatedBufferImageUsage,
    // pNext chain for VkMemoryAllocateInfo. When used, must specify requiresDedicatedAllocation = true.
    void* pMemoryAllocateNext,
    const VmaAllocationCreateInfo& createInfo,
    VmaSuballocationType suballocType,
    size_t allocationCount,
    VmaAllocation* pAllocations)
{
    memset(pAllocations, 0, sizeof(VmaAllocation) * allocationCount);

    vkMemReq.alignment = VMA_MAX(vkMemReq.alignment, createInfo.minAlignment);
    VMA_ASSERT(VmaIsPow2(vkMemReq.alignment));

    // If using custom pNext chain for VkMemoryAllocateInfo, must require dedicated allocations.
    if(pMemoryAllocateNext != VMA_NULL)
    {
        requiresDedicatedAllocation = true;
    }

    if(vkMemReq.size == 0)
    {
        return VK_ERROR_INITIALIZATION_FAILED;
    }

    VmaAllocationCreateInfo createInfoFinal = createInfo;
    VkResult res = CalcAllocationParams(createInfoFinal, requiresDedicatedAllocation);
    if(res != VK_SUCCESS)
        return res;

    if(createInfoFinal.pool != VK_NULL_HANDLE)
    {
        VmaBlockVector& blockVector = createInfoFinal.pool->m_BlockVector;
        return AllocateMemoryOfType(
            createInfoFinal.pool,
            vkMemReq.size,
            vkMemReq.alignment,
            prefersDedicatedAllocation,
            dedicatedBuffer,
            dedicatedImage,
            dedicatedBufferImageUsage,
            pMemoryAllocateNext,
            createInfoFinal,
            blockVector.GetMemoryTypeIndex(),
            suballocType,
            createInfoFinal.pool->m_DedicatedAllocations,
            blockVector,
            allocationCount,
            pAllocations);
    }

    // Bit mask of memory Vulkan types acceptable for this allocation.
    uint32_t memoryTypeBits = vkMemReq.memoryTypeBits;