I was wondering if WebGL is considered stable enough to be enabled by default. It makes some PDFs render much faster and it has been off by default for a while now, so we have had quite some time to test it.

If we decide to enable WebGL by default, we should not forget to update https://github.com/mozilla/pdf.js/blob/master/extensions/chromium/preferences_schema.json#L39 as well.

/cc @yurydelendik 
/cc @Snuffleupagus (because IIRC you were testing WebGL too)

try {
        generateGL();
        return !!currentGL;
      } catch (ex) {}
      return false;
    },
    composeSMask,
    drawFigures,
    cleanup() {
      if (smaskCache?.canvas) {
        smaskCache.canvas.width = 0;
        smaskCache.canvas.height = 0;
      }
      if (figuresCache?.canvas) {
        figuresCache.canvas.width = 0;
        figuresCache.canvas.height = 0;
      }
      smaskCache = null;
      figuresCache = null;
    },
  };
})();
export { WebGLContext };