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OpenXR Specification 1.1.36 (2024-04-15)
This is a substantial update to the OpenXR specification.
- Major Update
- New ratified core OpenXR 1.1 specification. (internal MR 3053,
internal MR 3046, internal MR 3187, internal MR 3199)
- New ratified Khronos extension specification:
XR_KHR_locate_spaces. Promoted to core OpenXR 1.1. (internal MR
2272, internal issue 1706, internal MR 3178, internal MR 3196,
internal MR 3300)
- New ratified Khronos extension specification:
XR_KHR_maintenance1. Promoted to core OpenXR 1.1. (internal MR
3053, internal MR 3046, internal MR 3187, internal MR 3199)
- Fundamentals chapter: Add assorted structures and values to core
OpenXR 1.1. Some are versions of structures from existing
extensions. (internal MR 3046, internal MR 3061)
- Fundamentals chapter: Promote XR_EXT_uuid to core OpenXR 1.1.
(internal MR 3046)
- Fundamentals chapter: Rename “Common Object Types” section to
“Common Data Types” and clarify its introduction. (internal MR
3062)
- Fundamentals chapter: Clarify XrDuration (and related constant)
specification. (internal MR 3062)
- Fundamentals chapter: Clarify and expand the “buffer size”
section about the two-call idiom. (internal MR 3062)
- Fundamentals chapter: Improve documentation for convenience
macros acting on XrResult, and clarify text about common return
code name suffixes. (internal MR 3062)
- Fundamentals chapter: Clarify and expand documentation of
“offsets” and “extents”. (internal MR 3062)
- Fundamentals chapter: Clarify description of extension list.
(internal MR 3062)
- Fundamentals chapter: Miscellaneous minor cleanup,
clarification, and normative language fixes. (internal MR 3062,
internal MR 3062, internal MR 3210)
- Fundamentals chapter: Clarify the section on events and event
polling. (internal MR 3062, internal MR 3163, internal MR 3276)
- Semantic Paths chapter: Promote the “grip_surface” pose
identifier to core OpenXR 1.1, renamed from XR_EXT_palm_pose.
(internal MR 3050, internal MR 3303)
- Semantic Paths chapter: Promote many interaction profiles from
extensions to core OpenXR 1.1. (internal MR 3051, internal MR
3127, internal MR 3265, internal MR 3279, internal MR 3294)
- Semantic Paths chapter: Add several legacy interaction profiles
to represent specific controllers shipped under the Oculus/Meta
Touch name and previously grouped into a single Oculus Touch
interaction profile. (internal MR 3127, internal MR 3299)
- Spaces chapter: Promote a refined version of XR_EXT_local_floor
to core OpenXR 1.1. (internal MR 3048, internal MR 3074,
internal MR 3134, internal MR 3155, internal MR 3156, internal
MR 3157, internal MR 3171, internal MR 3172, internal MR 3175)
- Spaces chapter: General improvements to the Spaces chapter.
(internal MR 3169, internal MR 3189)
- View Configurations chapter: Promote
XR_VIEW_CONFIGURATION_TYPE_PRIMARY_STEREO_WITH_FOVEATED_INSET to
core OpenXR 1.1, renamed and refined from XR_VARJO_quad_views.
(internal MR 3049, internal MR 3173)
- Rendering chapter: Formally deprecate
XR_COMPOSITION_LAYER_CORRECT_CHROMATIC_ABERRATION_BIT,
previously noted to have no effect on any known runtimes and as
planned for deprecation. (internal MR 3096)
- Input chapter: Re-organize and clarify the Input chapter.
(internal MR 3179, internal MR 3183, internal MR 3185, internal
MR 3205, internal MR 3207)
- Core Revisions chapter: Add new informative (non-normative)
chapter detailing substantial core revisions, summarize changes
in OpenXR 1.1 core, and differences between extensions and the
functionality promoted to core. (internal MR 3199, internal MR
3280)
- Appendix: Update Contributors section. (internal MR 3111)
- Tooling: Update scripts for 1.1, handling extension promotion,
and partially synchronize shared scripts with Vulkan. (internal
MR 3056, internal MR 3139, internal MR 3188, internal MR 3190,
internal MR 3219, internal MR 3226, internal MR 3262, internal
MR 3263, internal MR 3260, internal MR 3266, internal MR 3295)
- Registry
- New ratified OpenXR version: XR_VERSION_1_1 - OpenXR 1.1.
(internal MR 3053)
- New ratified Khronos extension: XR_KHR_locate_spaces (internal
MR 2272, internal issue 1706)
- New ratified Khronos extension: XR_KHR_maintenance1 (internal MR
3053)
- New multi-vendor extension: XR_EXT_future (internal MR 2610)
- New vendor extension: XR_META_environment_depth (internal MR
2771, internal MR 3271)
- Update the XML schema to change how dependencies are described
(replacing requiresCore and requires attributes of extension,
and feature and extension attributes of require, with a new
depends attribute.). This is a breaking change of the XML
schema, though in an infrequently processed attribute. This
corresponds to the change made in Vulkan 1.3.241. (internal MR
3260)
- Mark XR_OCULUS_android_session_state_enable as deprecated.
(internal MR 3255)
- Specification
- New multi-vendor extension specification: XR_EXT_future
(internal MR 2610)
- New vendor extension specification: XR_META_environment_depth
(internal MR 2771, internal MR 3271)
- Fix: Small clarification on post-conditions for loader
negotiation functions. (internal MR 2117)
- Fix: Correct broken QR code specification link in extension ref
page. (internal MR 3308)
- Fix: Adjust markup of non-normative note admonition blocks.
(internal MR 3315)
- Fix: Adjust Makefile so builds that do not emit any errors
during ref page generation do not fail when looking for those
errors. (internal MR 3226)
- Improvement: Switch code highlighter to “rouge”, use customized
Khronos stylesheet for both main spec and ref pages for
consistent style and improved accessibility. (internal MR 3309)
- Improvement: Replace JavaScript in main specification source
with build-time postprocessing. (internal MR 3309)
- Improvement: Make reference pages use shared external CSS for
faster load times. (internal MR 3309)
- Improvement: Update the internal anchors in the specification to
a standardized format. (internal MR 3315)
- Improvement: Specification build system cleanup, silence
warnings that are not relevant. (internal MR 3308)
- Loader design: Allow checking multiple records from the broker,
all corresponding to the same runtime, for compatibility
purposes. (internal MR 3269, internal issue 2226)
- New multi-vendor extension specification: XR_EXT_future
(internal MR 2610)
- New vendor extension specification: XR_META_environment_depth
(internal MR 2771, internal MR 3271)
- XR_FB_face_tracking2: Correct the number of blend shapes
mentioned in the prose. (internal MR 3277)
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