Shares of Nvidia Corp. 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 has advanced 7.4% and the S&P 500 has gained 2.1%.