VK_EXT_image_view_min_lod

Other Extension Metadata

Last Modified Date

2021-11-09

IP Status

No known IP claims.

Contributors

• Joshua Ashton, Valve
• Hans-Kristian Arntzen, Valve
• Samuel Iglesias Gonsalvez, Igalia
• Tobias Hector, AMD
• Faith Ekstrand, Intel
• Tom Olson, ARM

Description

This extension allows applications to clamp the minimum LOD value during Image Level(s) Selection, Texel Gathering and Integer Texel Coordinate Operations with a given VkImageView by VkImageViewMinLodCreateInfoEXT::minLod.

This extension may be useful to restrict a VkImageView to only mips which have been uploaded, and the use of fractional minLod can be useful for smoothly introducing new mip levels when using linear mipmap filtering.

New Structures

• Extending VkImageViewCreateInfo:
  • VkImageViewMinLodCreateInfoEXT
• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceImageViewMinLodFeaturesEXT

New Enum Constants

• VK_EXT_IMAGE_VIEW_MIN_LOD_EXTENSION_NAME
• VK_EXT_IMAGE_VIEW_MIN_LOD_SPEC_VERSION
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_IMAGE_VIEW_MIN_LOD_CREATE_INFO_EXT
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_VIEW_MIN_LOD_FEATURES_EXT

Version History

• Revision 1, 2021-07-06 (Joshua Ashton)
  • Initial version