This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The WebGL2RenderingContext.endQuery()
method of the WebGL 2 API marks the end of a given query target.
Syntax
void gl.endQuery(target);
Parameters
- target
- A
GLenum
specifying 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 above, but less accurate and faster version.gl.TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN
: Number of primitives that are written to transform feedback buffers.
Return value
None.
Examples
var query = gl.createQuery(); gl.beginQuery(gl.ANY_SAMPLES_PASSED, query); // ... gl.endQuery(gl.ANY_SAMPLES_PASSED);
Specifications
Specification | Status | Comment |
---|---|---|
WebGL 2.0 The definition of 'endQuery' in that specification. |
Editor's Draft | Initial definition. |
OpenGL ES 3.0 The definition of 'glEndQuery' in that specification. |
Standard | Man page of the (similar) OpenGL API. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 56 | No | 51 | No | 43 | No |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 58 | 58 | No | 51 | No | 43 | No |