Shares of Nvidia Corp. /zigman2/quotes/200467500/composite NVDA -1.96% shot up 5.5% in active morning trading Monday, after the graphics chip maker said "Minecraft" and other games now support real-time ray tracing, which will enhance visualizations. Trading volume topped 6.5 million shares within an hour after the open, already more than half the full-day average of about 10.1 million shares. Nvidia said its GeForce RTX graphics processing units are the only GPUs capable of playing games with real-time ray tracing. Nvidia said an update Minecraft to support ray tracing will be available for free. Among other games supporting ray tracing are "Dying Light 2," "Metro Exodus--The Two Colonels," "SYNCED: Off-Planet." Thes tock has climbed 7.6% over the past three months, while the PHLX Semiconductor Index /zigman2/quotes/210598361/realtime SOX -1.06% has advanced 7.4% and the S&P 500 /zigman2/quotes/210599714/realtime SPX -0.39% has gained 2.1%.