Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
Note: This feature is available in Web Workers.
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.
Note: To use timestamp queries, the timestamp-query feature must be enabled in the GPUDevice.
writeTimestamp(querySet, queryIndex)
querySet
A GPUQuerySet object representing the query set that will store the timestamp values.
queryIndex
A 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.// â¦
const querySet = device.createQuerySet({
type: "timestamp",
count: 32,
});
// â¦
commandEncoder.writeTimestamp(querySet, 0);
// â¦
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