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WebGL2RenderingContext: getQueryParameter() method

files/en-us/web/api/webgl2renderingcontext/getqueryparameter/index.md

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{{APIRef("WebGL")}}{{AvailableInWorkers}}

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

Syntax

js-nolint
getQueryParameter(query, pname)

Parameters

  • query
    • : A {{domxref("WebGLQuery")}} object.
  • pname
    • : A {{domxref("WebGL_API/Types", "GLenum")}} specifying which information to return. Possible values:
      • gl.QUERY_RESULT
        • : Returns a {{domxref("WebGL_API/Types", "GLuint")}} containing the query result.
      • gl.QUERY_RESULT_AVAILABLE
        • : Returns a {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether or not a query result is available.

Return value

Depends on the pname parameter, either a {{domxref("WebGL_API/Types", "GLuint")}} or a {{domxref("WebGL_API/Types", "GLboolean")}}.

Examples

js
const query = gl.createQuery();
gl.beginQuery(gl.ANY_SAMPLES_PASSED, query);

const result = gl.getQueryParameter(query, gl.QUERY_RESULT);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

  • {{domxref("WebGLQuery")}}