WEBGL_debug_renderer_info extension is part of the WebGL API and exposes two constants with information about the graphics driver for debugging purposes.
Depending on the privacy settings of the browser, this extension might only be available to privileged contexts. Generally, the graphics driver information should only be used in edge cases to optimize your WebGL content or to debug GPU problems. The
WebGLRenderingContext.getParameter() method can help you to detect which features are supported and the
failIfMajorPerformanceCaveat context attribute lets you control if a context should be returned at all, if the performance would be dramatically slow.
WebGL extensions are available using the
WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.
Note: Depending on the privacy settings of the browser, this extension might only be available to privileged contexts or not work at all. In Firefox, if
privacy.resistFingerprinting is set to
true, this extensions is disabled.
This extension is available to both, WebGL1 and WebGL2 contexts.
With the help of this extension, privileged contexts are able to retrieve debugging information about the user's graphic driver:
const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
const debugInfo = gl.getExtension("WEBGL_debug_renderer_info");
const vendor = gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL);
const renderer = gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL);