web api instance property
VRFrameData: leftProjectionMatrix property
The leftProjectionMatrix read-only property of the VRFrameData interface returns a Float32Array representing a 4x4 matrix that describes the projection to be used for the left eye’s rendering.
[!NOTE] This property was part of the old WebVR API. It has been superseded by the WebXR Device API.
This value may be passed directly to WebGL’s uniformMatrix4fv function.
[!WARNING] It is highly recommended that applications use this matrix without modification. Failure to use this projection matrix when rendering may cause the presented frame to be distorted or badly aligned, resulting in varying degrees of user discomfort.
Value
A Float32Array object.
Examples
See VRDisplay.getFrameData() for example code.
Specifications
This property was part of the old WebVR API that has been superseded by the WebXR Device API. It is no longer on track to becoming a standard.
Until all browsers have implemented the new WebXR APIs, it is recommended to rely on frameworks, like A-Frame, Babylon.js, or Three.js, or a polyfill, to develop WebXR applications that will work across all browsers. Read Meta’s Porting from WebVR to WebXR guide for more information.