EXT_disjoint_timer_query: queryCounterEXT() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The EXT_disjoint_timer_query.queryCounterEXT() method of
the WebGL API records the current time into
the corresponding query object.
Syntax
js
queryCounterEXT(query, target)
Parameters
query-
A
WebGLQueryobject for which to record the current time. target-
A
GLenumspecifying the target of the time query. Must beext.TIMESTAMP_EXT.
Return value
None (undefined).
Examples
js
const ext = gl.getExtension("EXT_disjoint_timer_query");
const startQuery = ext.createQueryEXT();
const endQuery = ext.createQueryEXT();
ext.queryCounterEXT(startQuery, ext.TIMESTAMP_EXT);
// …
ext.queryCounterEXT(endQuery, ext.TIMESTAMP_EXT);
Specifications
| Specification |
|---|
| WebGL EXT_disjoint_timer_query Extension Specification |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
queryCounterEXT | ||||||||||||