The guys at Phoronix tested Vega's Primitive Binning on Linux, results are negligible gains or losses depending on the test, overall it does nothing to improve performance.
https://www.phoronix.com/scan.php?page=news_item&px=Vega-Prim-Binning-Test
https://www.phoronix.com/scan.php?page=news_item&px=Vega-Prim-Binning-Test