PFN_vkDebugUtilsMessengerCallbackEXT

The prototype for the VkDebugUtilsMessengerCreateInfoEXT::pfnUserCallback function implemented by the application is:

typedef VkBool32 (VKAPI_PTR *PFN_vkDebugUtilsMessengerCallbackEXT)(VkDebugUtilsMessageSeverityFlagBitsEXT      messageSeverity, VkDebugUtilsMessageTypeFlagsEXT             messageTypes, const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData, void*                                       pUserData);

pub type PFN_vkDebugUtilsMessengerCallbackEXT = Option<
    unsafe extern "system" fn(

    ) -> vk::Bool32
>;

• messageSeverity specifies the VkDebugUtilsMessageSeverityFlagBitsEXT that triggered this callback.
• messageTypes is a bitmask of VkDebugUtilsMessageTypeFlagBitsEXT specifying which type of event(s) triggered this callback.
• pCallbackData contains all the callback related data in the VkDebugUtilsMessengerCallbackDataEXT structure.
• pUserData is the application-defined user data pointer, equal to the value of VkDebugUtilsMessengerCreateInfoEXT::pUserData specified when the VkDebugUtilsMessengerEXT object was created.

The callback returns a VkBool32, which is interpreted in a layer-specified manner. The application should always return VK_FALSE. The VK_TRUE value is reserved for use in layer development.