WebGL2RenderingContext: isTransformFeedback() method

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

The WebGL2RenderingContext.isTransformFeedback() method of the WebGL 2 API returns true if the passed object is a valid {{domxref("WebGLTransformFeedback")}} object.

Syntax

isTransformFeedback(transformFeedback)

Parameters

• transformFeedback
  • : A {{domxref("WebGLTransformFeedback")}} object to test.

Return value

A {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether the given object is a valid {{domxref("WebGLTransformFeedback")}} object (true) or not (false).

Examples

gl must be a {{domxref("WebGL2RenderingContext")}}. WebGLTransformFeedback objects are not available in WebGL 1.

const transformFeedback = gl.createTransformFeedback();

// …

gl.isTransformFeedback(transformFeedback);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLTransformFeedback")}}