Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The writeTimestamp() method of the GPUCommandEncoder interface encodes a command that writes a timestamp into a GPUQuerySet once the previous commands recorded into the same queued GPUCommandBuffer have been executed by the GPU.
js
writeTimestamp(querySet, queryIndex)
querySetA GPUQuerySet object representing the query set that will store the timestamp values.
queryIndexA number representing the index of the query in the query set.
None (Undefined).
The following criteria must be met when calling writeTimestamp(), otherwise a GPUValidationError is generated and the GPUCommandEncoder becomes invalid:
timestamp-query feature is enabled in the GPUDevice.querySet GPUQuerySet.type is "timestamp"
queryIndex value is less than the GPUQuerySet.count.js
// ... const querySet = device.createQuerySet({ type: "timestamp", count: 32, }); // ... commandEncoder.writeTimestamp(querySet, 0); // ...
| Specification |
|---|
| WebGPU # dom-gpucommandencoder-writetimestamp |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
writeTimestamp |
113Currently supported on ChromeOS, macOS, and Windows only. |
113Currently supported on ChromeOS, macOS, and Windows only. |
previewCurrently supported on Linux and Windows only. |
No | 99Currently supported on ChromeOS, macOS, and Windows only. |
No | No | No | No | No | No | No |
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https://developer.mozilla.org/en-US/docs/Web/API/GPUCommandEncoder/writeTimestamp