This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.
The WebGL2RenderingContext.isQuery()
method of the WebGL 2 API returns true
if the passed object is a valid WebGLQuery
object.
Syntax
GLBoolean gl.isQuery(query);
Parameters
query
- A
WebGLQuery
object to test.
Return value
A GLboolean
indicating whether the given object is a valid WebGLQuery
object (true
) or not (false
).
Examples
gl
must be a WebGL2RenderingContext
. WebGLQuery
objects are not available in WebGL 1.
var query = gl.createQuery();
// ...
gl.isQuery(query);
Specifications
Specification | Status | Comment |
WebGL 2.0The definition of 'isQuery' in that specification. | Editor's Draft | Initial definition. |
OpenGL ES 3.0The definition of 'glIsQuery' 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.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
isQuery
|
Chrome
Full support 56 |
Edge
Full support 79 |
Firefox
Full support 51 |
IE
No support No |
Opera
Full support 43 |
Safari
No support No |
WebView Android
Full support 58 |
Chrome Android
Full support 58 |
Firefox Android
Full support 51 |
Opera Android
Full support 43 |
Safari iOS
No support No |
Samsung Internet Android
Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support
See also
WebGL2RenderingContext.isQuery() by Mozilla Contributors is licensed under CC-BY-SA 2.5.