Function TestStatistics

src/Tests.cpp:6657–6901

}

static void TestStatistics()
{
    wprintf(L"Testing statistics...\n");

    constexpr VkDeviceSize BUF_SIZE = 10ull * 1024 * 1024;
    constexpr uint32_t BUF_COUNT = 4;
    constexpr VkDeviceSize PREALLOCATED_BLOCK_SIZE = BUF_SIZE * (BUF_COUNT + 1);

    const VkPhysicalDeviceMemoryProperties* memProps = {};
    vmaGetMemoryProperties(g_hAllocator, &memProps);

    /*
    Test 0: VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT.
    Test 1: normal allocations.
    Test 2: allocations in a custom pool.
    Test 3: allocations in a custom pool, DEDICATED_MEMORY.
    Test 4: allocations in a custom pool with preallocated memory.
    */
    uint32_t memTypeIndex = UINT32_MAX;
    for(uint32_t testIndex = 0; testIndex < 5; ++testIndex)
    {
        vmaSetCurrentFrameIndex(g_hAllocator, ++g_FrameIndex);

        VmaBudget budgetBeg[VK_MAX_MEMORY_HEAPS] = {};
        vmaGetHeapBudgets(g_hAllocator, budgetBeg);
        VmaTotalStatistics statsBeg = {};
        vmaCalculateStatistics(g_hAllocator, &statsBeg);

        for(uint32_t i = 0; i < memProps->memoryHeapCount; ++i)
        {
            TEST(budgetBeg[i].budget > 0);
            TEST(budgetBeg[i].budget <= memProps->memoryHeaps[i].size);
            TEST(budgetBeg[i].statistics.allocationBytes <= budgetBeg[i].statistics.blockBytes);
        }

        // Create pool.
        const bool usePool = testIndex >= 2;
        const bool useDedicated = testIndex == 0 || testIndex == 3;
        const bool usePreallocated = testIndex == 4;
        VmaPool pool = VK_NULL_HANDLE;
        if(usePool)
        {
            assert(memTypeIndex != UINT32_MAX);
            VmaPoolCreateInfo poolCreateInfo = {};
            poolCreateInfo.memoryTypeIndex = memTypeIndex;
            if(usePreallocated)
            {
                poolCreateInfo.blockSize = PREALLOCATED_BLOCK_SIZE;
                poolCreateInfo.minBlockCount = poolCreateInfo.maxBlockCount = 1;
            }
            TEST(vmaCreatePool(g_hAllocator, &poolCreateInfo, &pool) == VK_SUCCESS);
        }

        VmaStatistics poolStatsBeg = {};
        VmaDetailedStatistics detailedPoolStatsBeg = {};
        if(usePool)
        {
            vmaGetPoolStatistics(g_hAllocator, pool, &poolStatsBeg);