Package org.lwjgl.vulkan

Class MESAImageAlignmentControl

java.lang.Object
org.lwjgl.vulkan.MESAImageAlignmentControl
public final class MESAImageAlignmentControl extends Object
This extension allows applications to request a narrower alignment for images than an implementation would otherwise require. Some implementations internally support multiple image layouts in IMAGE_TILING_OPTIMAL, each with different alignment requirements and performance trade-offs. In some API layering use cases such as D3D12, it is beneficial to be able to control the alignment, since certain alignments for placed resources are guaranteed to be supported, and emulating that expectation requires unnecessary padding of allocations.

VkImageAlignmentControlCreateInfoMESA can be chained to VkImageCreateInfo, requesting that the alignment is no more than the provided alignment. If the requested alignment is not supported for a given VkImageCreateInfo, a larger alignment may be returned.

While something similar could be achieved with VK_EXT_image_drm_format_modifier in theory, this is not the intended way to use that extension. Format modifiers are generally used for externally shareable images, and would not be platform portable. It is also a cumbersome API to use just to lower the alignment.

Name String
VK_MESA_image_alignment_control
Extension Type
Device extension
Registered Extension Number
576
Revision
1
Extension and Version Dependencies
VK_KHR_get_physical_device_properties2 or Version 1.1
Special Use
Contact
Other Extension Metadata
Last Modified Date
2024-05-03
IP Status
No known IP claims.
Contributors
  • Hans-Kristian Arntzen, Valve