VK_EXT_scalar_block_layout

Other Extension Metadata

Last Modified Date

2018-11-14

Contributors

• Jeff Bolz
• Jan-Harald Fredriksen
• Graeme Leese
• Faith 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