VK_EXT_scalar_block_layout(3)

# VK_EXT_scalar_block_layout(3) Manual Page

## Name

VK_EXT_scalar_block_layout - device extension

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## Registered Extension Number

222

## Revision

1

## Extension and Version Dependencies

- Requires Vulkan 1.0

- Requires `VK_KHR_get_physical_device_properties2`

## Deprecation state

- Promoted to Vulkan 1.2

### Other Extension Metadata

Last Modified Date

  2018-11-14

Interactions and External Dependencies

  - Promoted to Vulkan 1.2 Core

Contributors

  - Jeff Bolz

  - Jan-Harald Fredriksen

  - Graeme Leese

  - Jason Ekstrand

  - John Kessenich

### Description

This extension enables C-like structure layout for SPIR-V blocks. It modifies the alignment rules for uniform buffers, storage buffers and push constants, allowing non-scalar types to be aligned solely based on the size of their components, without additional requirements.

### Promotion to Vulkan 1.2

Functionality in this extension is included in core Vulkan 1.2, with the EXT suffix omitted. However, if Vulkan 1.2 is supported and this extension is not, the `scalarBlockLayout` capability is optional. The original type, enum and command names are still available as aliases of the core functionality.

### New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceScalarBlockLayoutFeaturesEXT

### New Enum Constants

- `VK_EXT_SCALAR_BLOCK_LAYOUT_EXTENSION_NAME`

- `VK_EXT_SCALAR_BLOCK_LAYOUT_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SCALAR_BLOCK_LAYOUT_FEATURES_EXT`

### Version History

- Revision 1, 2018-11-14 (Tobias Hector)

  - Initial draft

## See Also

VkPhysicalDeviceScalarBlockLayoutFeaturesEXT

## 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

Copyright 2014-2021 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0