Registered Extension Number

497

Revision

2

Ratification Status

Ratified

Extension and Version Dependencies

None

Contact

Extension Proposal

Other Extension Metadata

Last Modified Date

2023-09-23

IP Status

No known IP claims.

Contributors
  • Christophe Riccio, LunarG

  • Mark Lobodzinski, LunarG

  • Charles Giessen, LunarG

  • Spencer Fricke, LunarG

  • Juan Ramos, LunarG

  • Daniel Rakos, RasterGrid

  • Shahbaz Youssefi, Google

  • Lina Versace, Google

  • Bill Hollings, The Brenwill Workshop

  • Jon Leech, Khronos

  • Tom Olson, Arm

Description

This extension provides a mechanism for configuring programmatically through the Vulkan API the behavior of layers.

This extension provides the VkLayerSettingsCreateInfoEXT struct that can be included in the pNext chain of the VkInstanceCreateInfo structure passed as the pCreateInfo parameter of vkCreateInstance.

The structure contains an array of VkLayerSettingEXT structure values that configure specific features of layers.

Example

VK_EXT_layer_settings is implemented by the Vulkan Profiles layer.

It allows the profiles layer tests used by the profiles layer C.I. to programmatically configure the layer for each test without affecting the C.I. environment, allowing to run multiple tests concurrently.

const char* profile_file_data = JSON_TEST_FILES_PATH "VP_KHR_roadmap_2022.json";
const char* profile_name_data = "VP_KHR_roadmap_2022";
VkBool32 emulate_portability_data = VK_TRUE;
const char* simulate_capabilities[] = {
    "SIMULATE_API_VERSION_BIT",
    "SIMULATE_FEATURES_BIT",
    "SIMULATE_PROPERTIES_BIT",
    "SIMULATE_EXTENSIONS_BIT",
    "SIMULATE_FORMATS_BIT",
    "SIMULATE_QUEUE_FAMILY_PROPERTIES_BIT"
};
const char* debug_reports[] = {
    "DEBUG_REPORT_ERROR_BIT",
    "DEBUG_REPORT_WARNING_BIT",
    "DEBUG_REPORT_NOTIFICATION_BIT",
    "DEBUG_REPORT_DEBUG_BIT"
};

const VkLayerSettingEXT settings[] = {
     {kLayerName, kLayerSettingsProfileFile, VK_LAYER_SETTING_TYPE_STRING_EXT, 1, &profile_file_data},
     {kLayerName, kLayerSettingsProfileName, VK_LAYER_SETTING_TYPE_STRING_EXT, 1, &profile_name_data},
     {kLayerName, kLayerSettingsEmulatePortability, VK_LAYER_SETTING_TYPE_BOOL32_EXT, 1, &emulate_portability_data},
     {kLayerName, kLayerSettingsSimulateCapabilities, VK_LAYER_SETTING_TYPE_STRING_EXT,
        static_cast<uint32_t>(std::size(simulate_capabilities)), simulate_capabilities},
     {kLayerName, kLayerSettingsDebugReports, VK_LAYER_SETTING_TYPE_STRING_EXT,
        static_cast<uint32_t>(std::size(debug_reports)), debug_reports}
};

const VkLayerSettingsCreateInfoEXT layer_settings_create_info{
    VK_STRUCTURE_TYPE_LAYER_SETTINGS_CREATE_INFO_EXT, nullptr,
    static_cast<uint32_t>(std::size(settings)), settings};

VkInstanceCreateInfo inst_create_info = {};
...
inst_create_info.pNext = &layer_settings_create_info;
vkCreateInstance(&inst_create_info, nullptr, &_instances);
Note

The VK_EXT_layer_settings extension subsumes all the functionality provided in the VK_EXT_validation_flags extension and the VK_EXT_validation_features extension.

New Structures

New Enums

New Enum Constants

  • VK_EXT_LAYER_SETTINGS_EXTENSION_NAME

  • VK_EXT_LAYER_SETTINGS_SPEC_VERSION

  • Extending VkStructureType:

    • VK_STRUCTURE_TYPE_LAYER_SETTINGS_CREATE_INFO_EXT

Issues

  • How should application developers figure out the list of available settings?

This extension does not provide a reflection API for layer settings. Layer settings are described in each layer JSON manifest and the documentation of each layer which implements this extension.

Version History

  • Revision 1, 2020-06-17 (Mark Lobodzinski)

    • Initial revision for Validation layer internal usages

  • Revision 2, 2023-09-26 (Christophe Riccio)

    • Refactor APIs for any layer usages and public release

See Also

Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0