XrCompositionLayerProjection(3)

C Specification

The XrCompositionLayerProjection structure is defined as:

// Provided by XR_VERSION_1_0
typedef struct XrCompositionLayerProjection {
    XrStructureType                            type;
    const void*                                next;
    XrCompositionLayerFlags                    layerFlags;
    XrSpace                                    space;
    uint32_t                                   viewCount;
    const XrCompositionLayerProjectionView*    views;
} XrCompositionLayerProjection;

Members

Member Descriptions

type is the XrStructureType of this structure.
next is NULL or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR.
layerFlags is a bitmask of XrCompositionLayerFlagBits describing flags to apply to the layer.
space is the XrSpace in which the pose of each XrCompositionLayerProjectionView is evaluated over time by the compositor.
viewCount is the count of views in the views array. This must be equal to the number of view poses returned by xrLocateViews.
views is the array of type XrCompositionLayerProjectionView containing each projection layer view.

Description

Note

Because a runtime may reproject the layer over time, a projection layer should specify an XrSpace in which to maximize stability of the layer content. For example, a projection layer containing world-locked content should use an XrSpace which is also world-locked, such as the LOCAL or STAGE reference spaces. In the case that the projection layer should be head-locked, such as a heads up display, the VIEW reference space would provide the highest quality layer reprojection.

Valid Usage (Implicit)

type must be XR_TYPE_COMPOSITION_LAYER_PROJECTION
next must be NULL or a valid pointer to the next structure in a structure chain. See also: XrCompositionLayerDepthTestVARJO, XrCompositionLayerReprojectionInfoMSFT, XrCompositionLayerReprojectionPlaneOverrideMSFT
layerFlags must be 0 or a valid combination of XrCompositionLayerFlagBits values
space must be a valid XrSpace handle
views must be a pointer to an array of viewCount valid XrCompositionLayerProjectionView structures
The viewCount parameter must be greater than 0

Document Notes

For more information, see the OpenXR Specification

This page is extracted from the OpenXR Specification. Fixes and changes should be made to the Specification, not directly.

Copyright

This work is licensed under a Creative Commons Attribution 4.0 International License.

XrCompositionLayerProjection(3) Manual Page

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C Specification

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