Currently, WebGL is forced to being enabled in WPEView, by overriding the WebPreferences. It can not be disabled with the glib settings APIs webkit_settings_new_with_settings() or webkit_settings_set_enable_webgl().
Pull request: https://github.com/WebKit/WebKit/pull/19540
Committed 269845@main (9124a6d9998a): <https://commits.webkit.org/269845@main> Reviewed commits have been landed. Closing PR #19540 and removing active labels.