Function TestVirtualBlocksAlgorithms

src/Tests.cpp:3382–3549

}

static void TestVirtualBlocksAlgorithms()
{
    wprintf(L"Test virtual blocks algorithms\n");

    RandomNumberGenerator rand{3454335};
    auto calcRandomAllocSize = [&rand]() -> VkDeviceSize { return rand.Generate() % 20 + 5; };

    for(size_t algorithmIndex = 0; algorithmIndex < 2; ++algorithmIndex)
    {
        // Create the block
        VmaVirtualBlockCreateInfo blockCreateInfo = {};
        blockCreateInfo.pAllocationCallbacks = g_Allocs;
        blockCreateInfo.size = 10'000;
        switch(algorithmIndex)
        {
        case 1: blockCreateInfo.flags = VMA_VIRTUAL_BLOCK_CREATE_LINEAR_ALGORITHM_BIT; break;
        }
        VmaVirtualBlock block = nullptr;
        VkResult res = vmaCreateVirtualBlock(&blockCreateInfo, &block);
        TEST(res == VK_SUCCESS);

        struct AllocData
        {
            VmaVirtualAllocation allocation;
            VkDeviceSize allocOffset, requestedSize, allocationSize;
        };
        std::vector<AllocData> allocations;

        // Test too large allocation
        {
            VmaVirtualAllocationCreateInfo allocCreateInfo = {};
            allocCreateInfo.size = blockCreateInfo.size * 2;
            VmaVirtualAllocation alloc;
            TEST(vmaVirtualAllocate(block, &allocCreateInfo, &alloc, nullptr) < 0);
        }

        // Make some allocations
        for(size_t i = 0; i < 20; ++i)
        {
            VmaVirtualAllocationCreateInfo allocCreateInfo = {};
            allocCreateInfo.size = calcRandomAllocSize();
            allocCreateInfo.pUserData = (void*)(uintptr_t)(allocCreateInfo.size * 10);
            if(i < 10) { }
            else if(i < 12) allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT;
            else if(i < 14) allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT;
            else if(i < 16) allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT;
            else if(i < 18 && algorithmIndex == 1) allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_UPPER_ADDRESS_BIT;

            AllocData alloc = {};
            alloc.requestedSize = allocCreateInfo.size;
            res = vmaVirtualAllocate(block, &allocCreateInfo, &alloc.allocation, nullptr);
            TEST(res == VK_SUCCESS);

            VmaVirtualAllocationInfo allocInfo;
            vmaGetVirtualAllocationInfo(block, alloc.allocation, &allocInfo);
            TEST(allocInfo.size >= allocCreateInfo.size);
            alloc.allocOffset = allocInfo.offset;
            alloc.allocationSize = allocInfo.size;