# VkDebugUtilsMessageTypeFlagBitsEXT(3) Manual Page

## Name

VkDebugUtilsMessageTypeFlagBitsEXT - Bitmask specifying which types of events cause a debug messenger callback

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## C Specification

Bits which can be set in VkDebugUtilsMessengerCreateInfoEXT::`messageType`, specifying event types which cause a debug messenger to call the callback, are:

    // Provided by VK_EXT_debug_utils
    typedef enum VkDebugUtilsMessageTypeFlagBitsEXT {
        VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT = 0x00000001,
        VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT = 0x00000002,
        VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT = 0x00000004,
      // Provided by VK_EXT_device_address_binding_report
        VK_DEBUG_UTILS_MESSAGE_TYPE_DEVICE_ADDRESS_BINDING_BIT_EXT = 0x00000008,
    } VkDebugUtilsMessageTypeFlagBitsEXT;

## Description

- `VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT` specifies that some general event has occurred. This is typically a non-specification, non-performance event.

- `VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT` specifies that something has occurred during validation against the Vulkan specification that may indicate invalid behavior.

- `VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT` specifies a potentially non-optimal use of Vulkan, e.g. using vkCmdClearColorImage when setting VkAttachmentDescription::`loadOp` to `VK_ATTACHMENT_LOAD_OP_CLEAR` would have worked.

- `VK_DEBUG_UTILS_MESSAGE_TYPE_DEVICE_ADDRESS_BINDING_BIT_EXT` specifies that the implementation has modified the set of GPU-visible virtual addresses associated with a Vulkan object.

## See Also

VK_EXT_debug_utils, VkDebugUtilsMessageTypeFlagsEXT

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0