Vulkan diagnostics

This section concerns a Vulkan renderer. Vulkan messages do not diagnose a different graphics API used by Compatibility.

1. Read the startup log to identify the renderer, driver and GPU actually selected.
2. If device creation fails, retain the complete error and GPU/driver information. Initialization failure is not a particular material failure.
3. If the device starts but API-use errors appear, enable validation layers.
4. Compare the same project and settings across devices. Switching renderer helps isolate a problem but does not prove its cause fixed.

A report needs the first message, its VUID if present, a minimal project and exact build. Attach an image alongside the log: overexposure or an incorrect material alone does not establish a Vulkan violation. GPU validation was not executed for this article.