Function BenchmarkAlgorithmsCase

src/Tests.cpp:4860–5011

}

static void BenchmarkAlgorithmsCase(FILE* file,
    uint32_t algorithm,
    bool empty,
    VmaAllocationCreateFlags allocStrategy,
    FREE_ORDER freeOrder)
{
    RandomNumberGenerator rand{16223};

    const VkDeviceSize bufSizeMin = 32;
    const VkDeviceSize bufSizeMax = 1024;
    const size_t maxBufCapacity = 10000;
    const uint32_t iterationCount = 10;

    VkBufferCreateInfo sampleBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
    sampleBufCreateInfo.size = bufSizeMax;
    sampleBufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;

    VmaAllocationCreateInfo sampleAllocCreateInfo = {};
    sampleAllocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE;

    VmaPoolCreateInfo poolCreateInfo = {};
    VkResult res = vmaFindMemoryTypeIndexForBufferInfo(g_hAllocator, &sampleBufCreateInfo, &sampleAllocCreateInfo, &poolCreateInfo.memoryTypeIndex);
    TEST(res == VK_SUCCESS);

    poolCreateInfo.blockSize = bufSizeMax * maxBufCapacity;
    poolCreateInfo.flags = VMA_POOL_CREATE_IGNORE_BUFFER_IMAGE_GRANULARITY_BIT;//TODO remove this
    poolCreateInfo.flags |= algorithm;
    poolCreateInfo.minBlockCount = poolCreateInfo.maxBlockCount = 1;

    VmaPool pool = nullptr;
    res = vmaCreatePool(g_hAllocator, &poolCreateInfo, &pool);
    TEST(res == VK_SUCCESS);

    // Buffer created just to get memory requirements. Never bound to any memory.
    VkBuffer dummyBuffer = VK_NULL_HANDLE;
    res = vkCreateBuffer(g_hDevice, &sampleBufCreateInfo, g_Allocs, &dummyBuffer);
    TEST(res == VK_SUCCESS && dummyBuffer);

    VkMemoryRequirements memReq = {};
    vkGetBufferMemoryRequirements(g_hDevice, dummyBuffer, &memReq);

    vkDestroyBuffer(g_hDevice, dummyBuffer, g_Allocs);

    VmaAllocationCreateInfo allocCreateInfo = {};
    allocCreateInfo.pool = pool;
    allocCreateInfo.flags = allocStrategy;

    VmaAllocation alloc;
    std::vector<VmaAllocation> baseAllocations;

    if(!empty)
    {
        // Make allocations up to 1/3 of pool size.
        VkDeviceSize totalSize = 0;
        while(totalSize < poolCreateInfo.blockSize / 3)
        {
            // This test intentionally allows sizes that are aligned to 4 or 16 bytes.
            // This is theoretically allowed and already uncovered one bug.