12.1. XR_HTC_frame_synchronization

Overview

Traditional, runtime will use the latest frame which will cost jitter. With Frame Synchronization, the render frame will not be discarded for smooth gameplay experience. However, if the GPU cannot consistently finish rendering on time (rendering more than one vsync at a time), jitter will still occur. Therefore, reducing GPU load is key to smooth gameplay.

Name String

XR_HTC_frame_synchronization

Revision

New Enum Constants

XrStructureType enumeration is extended with:

XR_TYPE_FRAME_SYNCHRONIZATION_SESSION_BEGIN_INFO_HTC

New Enums

XrFrameSynchronizationModeHTC

New Structures

XrFrameSynchronizationSessionBeginInfoHTC

VIVE Plugin

Enable "VIVE XR Frame Synchronization" in "Project Settings > XR Plugin-in Management > OpenXR > Android Tab > OpenXR Feature Groups" to use the frame synchronization provided by VIVE OpenXR plugin.

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