VkDeviceCreateInfo validation layer fields still shown as recommended despite being deprecated #424

Summary

The tutorial currently recommends setting enabledLayerCount and ppEnabledLayerNames on VkDeviceCreateInfo for backward compatibility with older implementations. However, the official Vulkan spec now explicitly states these fields are legacy and fully deprecated, which contradicts the tutorial's framing.

Current tutorial text

The tutorial states:

"it is still a good idea to set them anyway to be compatible with older implementations"

And shows this code:

createInfo.enabledExtensionCount = 0;

if (enableValidationLayers) {
    createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
    createInfo.ppEnabledLayerNames = validationLayers.data();
} else {
    createInfo.enabledLayerCount = 0;
}

Problem

The Vulkan spec — Legacy Device Layers appendix now documents these fields as fully deprecated legacy behavior. Implementations are not required to honor them, and new code should not use them at all.

References

• Vulkan spec — Legacy Device Layers: https://docs.vulkan.org/spec/latest/appendices/legacy.html#legacy-devicelayers
• Khronos registry (1.3): https://www.khronos.org/registry/vulkan/specs/1.3-extensions/html/chap40.html#extendingvulkan-layers-devicelayerdeprecation