Function TestVirtualBlocks

src/Tests.cpp:3234–3380

}

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

    const VkDeviceSize blockSize = 16 * MEGABYTE;
    const VkDeviceSize alignment = 256;
    VkDeviceSize offset;

    // # Create block 16 MB

    VmaVirtualBlockCreateInfo blockCreateInfo = {};
    blockCreateInfo.pAllocationCallbacks = g_Allocs;
    blockCreateInfo.size = blockSize;
    VmaVirtualBlock block;
    TEST(vmaCreateVirtualBlock(&blockCreateInfo, &block) == VK_SUCCESS && block);

    // # Allocate 8 MB (also fetch offset from the allocation)

    VmaVirtualAllocationCreateInfo allocCreateInfo = {};
    allocCreateInfo.alignment = alignment;
    allocCreateInfo.pUserData = (void*)(uintptr_t)1;
    allocCreateInfo.size = 8 * MEGABYTE;
    VmaVirtualAllocation allocation0 = VK_NULL_HANDLE;
    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &allocation0, &offset) == VK_SUCCESS);
    TEST(allocation0 != VK_NULL_HANDLE);

    // # Validate the allocation

    VmaVirtualAllocationInfo allocInfo0 = {};
    vmaGetVirtualAllocationInfo(block, allocation0, &allocInfo0);
    TEST(allocInfo0.offset < blockSize);
    TEST(allocInfo0.offset == offset);
    TEST(allocInfo0.size == allocCreateInfo.size);
    TEST(allocInfo0.pUserData == allocCreateInfo.pUserData);

    // # Check SetUserData

    vmaSetVirtualAllocationUserData(block, allocation0, (void*)(uintptr_t)2);
    vmaGetVirtualAllocationInfo(block, allocation0, &allocInfo0);
    TEST(allocInfo0.pUserData == (void*)(uintptr_t)2);

    // # Allocate 4 MB (also test passing null as pOffset during allocation)

    allocCreateInfo.size = 4 * MEGABYTE;
    VmaVirtualAllocation allocation1 = VK_NULL_HANDLE;
    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &allocation1, nullptr) == VK_SUCCESS);
    TEST(allocation1 != VK_NULL_HANDLE);
    VmaVirtualAllocationInfo allocInfo1 = {};
    vmaGetVirtualAllocationInfo(block, allocation1, &allocInfo1);
    TEST(allocInfo1.offset < blockSize);
    TEST(allocInfo1.offset + 4 * MEGABYTE <= allocInfo0.offset || allocInfo0.offset + 8 * MEGABYTE <= allocInfo1.offset); // Check if they don't overlap.

    // # Allocate another 8 MB - it should fail

    allocCreateInfo.size = 8 * MEGABYTE;
    VmaVirtualAllocation allocation2 = VK_NULL_HANDLE;
    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &allocation2, &offset) < 0);
    TEST(allocation2 == VK_NULL_HANDLE);