Function TestDeviceCoherentMemory

src/Tests.cpp:6547–6618

}

static void TestDeviceCoherentMemory()
{
    if(!VK_AMD_device_coherent_memory_enabled)
        return;

    uint32_t deviceCoherentMemoryTypeBits = FindDeviceCoherentMemoryTypeBits();
    // Extension is enabled, feature is enabled, and the device still doesn't support any such memory type?
    // OK then, so it's just fake!
    if(deviceCoherentMemoryTypeBits == 0)
        return;

    wprintf(L"Testing device coherent memory...\n");

    // 1. Try to allocate buffer from a memory type that is DEVICE_COHERENT.

    VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
    bufCreateInfo.size = 0x10000;
    bufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;

    VmaAllocationCreateInfo allocCreateInfo = {};
    allocCreateInfo.flags = VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;
    allocCreateInfo.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_COHERENT_BIT_AMD;

    AllocInfo alloc = {};
    VmaAllocationInfo allocInfo = {};
    VkResult res = vmaCreateBuffer(g_hAllocator, &bufCreateInfo, &allocCreateInfo, &alloc.m_Buffer, &alloc.m_Allocation, &allocInfo);

    // Make sure it succeeded and was really created in such memory type.
    TEST(res == VK_SUCCESS);
    TEST((1u << allocInfo.memoryType) & deviceCoherentMemoryTypeBits);

    alloc.Destroy();

    // 2. Try to create a pool in such memory type.
    {
        VmaPoolCreateInfo poolCreateInfo = {};

        res = vmaFindMemoryTypeIndex(g_hAllocator, UINT32_MAX, &allocCreateInfo, &poolCreateInfo.memoryTypeIndex);
        TEST(res == VK_SUCCESS);
        TEST((1u << poolCreateInfo.memoryTypeIndex) & deviceCoherentMemoryTypeBits);

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

        vmaDestroyPool(g_hAllocator, pool);
    }

    // 3. Try the same with a local allocator created without VMA_ALLOCATOR_CREATE_AMD_DEVICE_COHERENT_MEMORY_BIT.

    VmaAllocatorCreateInfo allocatorCreateInfo = {};
    SetAllocatorCreateInfo(allocatorCreateInfo);
    allocatorCreateInfo.flags &= ~VMA_ALLOCATOR_CREATE_AMD_DEVICE_COHERENT_MEMORY_BIT;

    VmaAllocator localAllocator = VK_NULL_HANDLE;
    res = vmaCreateAllocator(&allocatorCreateInfo, &localAllocator);
    TEST(res == VK_SUCCESS && localAllocator);