Function TestDefragmentationSimple

src/Tests.cpp:1851–2124

}

void TestDefragmentationSimple()
{
    wprintf(L"Test defragmentation simple\n");

    RandomNumberGenerator rand(667);

    const VkDeviceSize BUF_SIZE = 0x10000;
    const VkDeviceSize BLOCK_SIZE = BUF_SIZE * 8;

    const VkDeviceSize MIN_BUF_SIZE = 32;
    const VkDeviceSize MAX_BUF_SIZE = BUF_SIZE * 4;
    auto RandomBufSize = [&]() -> VkDeviceSize
    {
        return align_up<VkDeviceSize>(rand.Generate() % (MAX_BUF_SIZE - MIN_BUF_SIZE + 1) + MIN_BUF_SIZE, 64);
    };

    VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
    bufCreateInfo.size = BUF_SIZE;
    bufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;

    VmaAllocationCreateInfo allocCreateInfo = {};
    allocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO;
    allocCreateInfo.flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT;

    uint32_t memTypeIndex = UINT32_MAX;
    vmaFindMemoryTypeIndexForBufferInfo(g_hAllocator, &bufCreateInfo, &allocCreateInfo, &memTypeIndex);

    VmaPoolCreateInfo poolCreateInfo = {};
    poolCreateInfo.blockSize = BLOCK_SIZE;
    poolCreateInfo.memoryTypeIndex = memTypeIndex;

    VmaPool pool;
    TEST(vmaCreatePool(g_hAllocator, &poolCreateInfo, &pool) == VK_SUCCESS);
    allocCreateInfo.pool = pool;

    VmaDefragmentationInfo defragInfo = {};
    defragInfo.flags = VMA_DEFRAGMENTATION_FLAG_ALGORITHM_FAST_BIT;
    defragInfo.pool = pool;

    // Defragmentation of empty pool.
    {
        VmaDefragmentationContext defragCtx = nullptr;
        VkResult res = vmaBeginDefragmentation(g_hAllocator, &defragInfo, &defragCtx);
        TEST(res == VK_SUCCESS);

        VmaDefragmentationPassMoveInfo pass = {};
        res = vmaBeginDefragmentationPass(g_hAllocator, defragCtx, &pass);
        TEST(res == VK_SUCCESS);

        VmaDefragmentationStats defragStats = {};
        vmaEndDefragmentation(g_hAllocator, defragCtx, &defragStats);
        TEST(defragStats.allocationsMoved == 0 && defragStats.bytesFreed == 0 &&
            defragStats.bytesMoved == 0 && defragStats.deviceMemoryBlocksFreed == 0);
    }

    std::vector<AllocInfo> allocations;

    // persistentlyMappedOption = 0 - not persistently mapped.