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Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The read-only depthDataFormat property of an immersive-ar XRSession describes which depth sensing data format is used.
This property can return the following values:
luminance-alpha
2-byte unsigned integer data buffers (LUMINANCE_ALPHA GLEnum). CPU usage: interpret XRCPUDepthInformation.data as Uint8Array. GPU usage: inspect Luminance and Alpha channels to reassemble single value.
float32
4-byte floating point data buffers (R32F GLEnum). CPU usage: interpret XRCPUDepthInformation.data as Float32Array. GPU usage: inspect Red channel and use the value.
To request the desired data format, you need to specify a dataFormatPreference when requesting a session using XRSystem.requestSession(). Here, the caller is able to handle both "luminance-alpha" and "float32" formats. The order indicates preference for "luminance-alpha":
navigator.xr.requestSession("immersive-ar", {
requiredFeatures: ["depth-sensing"],
depthSensing: {
usagePreference: ["cpu-optimized", "gpu-optimized"],
formatPreference: ["luminance-alpha", "float32"],
},
});
To check which data format was selected by the user agent, you can call the depthDataFormat property:
console.log(session.depthDataFormat); // either "luminance-alpha" or "float32"
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