Function ManuallyTestLinearAllocator

src/Tests.cpp:4744–4858

}

static void ManuallyTestLinearAllocator()
{
    VmaTotalStatistics origStats;
    vmaCalculateStatistics(g_hAllocator, &origStats);

    wprintf(L"Manually test linear allocator\n");

    RandomNumberGenerator rand{645332};

    VkBufferCreateInfo sampleBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
    sampleBufCreateInfo.size = 1024; // Whatever.
    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 = 10 * 1024;
    poolCreateInfo.flags = VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT;
    poolCreateInfo.minBlockCount = poolCreateInfo.maxBlockCount = 1;

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

    VkBufferCreateInfo bufCreateInfo = sampleBufCreateInfo;

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

    std::vector<BufferInfo> bufInfo;
    VmaAllocationInfo allocInfo;
    BufferInfo newBufInfo;

    // Test double stack.
    {
        /*
        Lower: Buffer 32 B, Buffer 1024 B, Buffer 32 B
        Upper: Buffer 16 B, Buffer 1024 B, Buffer 128 B

        Totally:
        1 block allocated
        10240 Vulkan bytes
        6 new allocations
        2256 bytes in allocations
        */

        bufCreateInfo.size = 32;
        res = vmaCreateBuffer(g_hAllocator, &bufCreateInfo, &allocCreateInfo,
            &newBufInfo.Buffer, &newBufInfo.Allocation, &allocInfo);
        TEST(res == VK_SUCCESS);
        bufInfo.push_back(newBufInfo);

        bufCreateInfo.size = 1024;
        res = vmaCreateBuffer(g_hAllocator, &bufCreateInfo, &allocCreateInfo,