WebGL2RenderingContext: endQuery() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

Note: This feature is available in Web Workers.

The WebGL2RenderingContext.endQuery() method of the WebGL 2 API marks the end of a given query target.

endQuery(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, but less accurate and faster version.
gl.TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: Number of primitives that are written to transform feedback buffers.

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

// …

gl.endQuery(gl.ANY_SAMPLES_PASSED);

Specification
WebGL 2.0 Specification # 3.7.12

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