Function TEST_F

tests/unit/layer_utils_positive.cpp:20–100

// These test check utils in the layer without needing to create a full Vulkan instance

TEST_F(PositiveLayerUtils, GetEffectiveExtent) {
    TEST_DESCRIPTION("Test unlikely GetEffectiveExtent edge cases");

    VkImageCreateInfo ci = vku::InitStructHelper();
    VkExtent3D extent = {};

    // Return zero extent if mip level doesn't exist
    {
        ci.mipLevels = 0;
        ci.extent = {1, 1, 1};
        extent = GetEffectiveExtent(ci, VK_IMAGE_ASPECT_NONE, 1);
        ASSERT_TRUE(extent.width == 0);
        ASSERT_TRUE(extent.height == 0);
        ASSERT_TRUE(extent.depth == 0);

        ci.mipLevels = 1;
        extent = GetEffectiveExtent(ci, VK_IMAGE_ASPECT_NONE, 1);
        ASSERT_TRUE(extent.width == 0);
        ASSERT_TRUE(extent.height == 0);
        ASSERT_TRUE(extent.depth == 0);
    }

    // Check that 0 based extent is respected
    {
        ci.flags = 0;
        ci.imageType = VK_IMAGE_TYPE_3D;
        ci.mipLevels = 2;
        ci.extent = {0, 0, 0};
        extent = GetEffectiveExtent(ci, VK_IMAGE_ASPECT_NONE, 1);
        ASSERT_TRUE(extent.width == 0);
        ASSERT_TRUE(extent.height == 0);
        ASSERT_TRUE(extent.depth == 0);

        ci.extent = {16, 32, 0};
        extent = GetEffectiveExtent(ci, VK_IMAGE_ASPECT_NONE, 1);
        ASSERT_TRUE(extent.width == 8);
        ASSERT_TRUE(extent.height == 16);
        ASSERT_TRUE(extent.depth == 0);
    }

    // Corner sampled images
    {
        ci.flags = VK_IMAGE_CREATE_CORNER_SAMPLED_BIT_NV;
        ci.imageType = VK_IMAGE_TYPE_3D;
        ci.mipLevels = 2;
        ci.extent = {1, 1, 1};
        extent = GetEffectiveExtent(ci, VK_IMAGE_ASPECT_NONE, 1);
        // The minimum level size is 2x2x2 for 3D corner sampled images.
        ASSERT_TRUE(extent.width == 2);
        ASSERT_TRUE(extent.height == 2);
        ASSERT_TRUE(extent.depth == 2);

        ci.flags = VK_IMAGE_CREATE_CORNER_SAMPLED_BIT_NV;
        ci.imageType = VK_IMAGE_TYPE_3D;
        ci.mipLevels = 2;
        ci.extent = {4, 8, 16};
        extent = GetEffectiveExtent(ci, VK_IMAGE_ASPECT_NONE, 1);
        ASSERT_TRUE(extent.width == 2);