WebGL2RenderingContext.getQueryParameter()

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The WebGL2RenderingContext.getQueryParameter() method of the WebGL 2 API returns parameter information of a WebGLQuery object.

Syntax

any gl.getQueryParameter(query, pname);

Parameters

query
A WebGLQuery object.
pname
A GLenum specifying which information to return. Possible values:
  • gl.QUERY_RESULT: Returns a GLuint containing the query result.
  • gl.QUERY_RESULT_AVAILABLE: Returns a GLboolean indicating whether or not a query result is available.

Return value

Depends on the pname parameter, either a GLuint or a GLboolean.

Examples

var query = gl.createQuery();
gl.beginQuery(gl.ANY_SAMPLES_PASSED, query);
var result = gl.getQueryParameters(query, gl.QUERY_RESULT);

Specifications

Specification Status Comment
WebGL 2.0
The definition of 'getQueryParameters' in that specification.		 Editor's Draft Initial definition.
OpenGL ES 3.0
The definition of 'glGetQueryObjectuiv' in that specification.		 Standard Man page of the (similar) OpenGL API.

Browser compatibility

FeatureChromeFirefoxEdgeInternet ExplorerOperaSafari
Basic Support5651.0(No)(No)43(No)
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support(No)(No)(No)(No)(No)(No)(No)

See also

Document Tags and Contributors

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 Contributors to this page: fscholz, teoli
 Last updated by: fscholz,