WebGL2RenderingContext.getQueryParameter() - Web APIs 编辑

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.getQueryParameter(query, gl.QUERY_RESULT);

Specifications

Browser compatibility

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See also

• WebGLQuery