The WebGL2RenderingContext.getQuery() method of the WebGL 2 API returns the currently active WebGLQuery for the target, or null.
WebGL2RenderingContext: getQuery() method
Syntax
js
getQuery(target, pname)
Parameters
-
target -
A
GLenumspecifying the target of the query. Possible values:-
gl.ANY_SAMPLES_PASSED -
Specifies an occlusion query: these queries detect whether an object is visible (whether the scoped drawing commands pass the depth test and if so, how many samples pass).
-
gl.ANY_SAMPLES_PASSED_CONSERVATIVE -
Same as above, but less accurate and faster version.
-
gl.TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN -
Number of primitives that are written to transform feedback buffers.
-
-
pname -
A
GLenumspecifying the query object target. Must begl.CURRENT_QUERY.
Return value
A WebGLQuery object.
Examples
js
const currentQuery = gl.getQuery(gl.ANY_SAMPLES_PASSED, gl.CURRENT_QUERY);
Specifications
| Specification |
|---|
| WebGL 2.0 Specification # 3.7.12 |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getQuery |
56 | 79 | 51 | No | 43 | 15 | 58 | 58 | 51 | 43 | 15 | 7.0 |
See also
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https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/getQuery