This video shows "classical" raytracing, in which rays are traced coherently, and it has long been doable in realtime on a GPU because it is trivially parallelizable. It looks impressive because it can do mirror- and glass-type effects (specular reflection and refraction), but there is more to photorealism than just those effects. In particular, while ray tracing does simulate light bouncing around a scene, it doesn't do so in a physically-accurate way.

What nvidia means by "ray tracing" with their RTX thing and the AI denoiser is actually path tracing, which uses incoherent rays and actually does simulate light bounces in a physically accurate way. Effects like depth of field, soft shadows, caustics, ambient occlusion, and diffuse interreflection are a natural result of the path tracing algorithm, but have to be specially accounted for in other algorithms like ray tracing. A good reference for this is Physically-Based Rendering, by Matt Pharr. Because the rays in a path tracer are incoherent, it's an inherently noisy algorithm that requires many samples to reduce variance to acceptable levels. That's where the AI denoiser comes in - it's able to take a noisy image made with fewer path-traced samples and reduce variance to an acceptable level in realtime.

The guys over at brigade also have an actual realtime path tracer, and while the work is world-class and draw-droppingly impressive, you can see how noisy it still is.

"Majority of Americans Believe It Is Essential That the US Remain a Global Leader in Space As Long As It Doesn't Cost Them Anything"

fixed it for you

but now they have guaranteed that I will never, ever, ever use any of their products.

From the article: > The firm tracked prices on 110 items over five weeks We tracked prices on all the items in the store, which is a 140x greater sample size than Gordon Haskett. Also, the article does not mention what the margin of error is on their sample.

My firm has continuously sampled a local Whole Foods (in Austin, TX) wall to wall, getting about 14.5k distinct UPCs each time. In comparing before and after the merger, we found no significant difference in average price per category (on a same-UPC basis), nor in the magnitude or absolute number of price changes over time. Bottom line: the idea that Amazon has caused Whole Foods to cut their prices is more marketing than reality.

Now if they can add some USB ports, a MagSafe port, an HDMI port, an SD card slot, more storage, an NVidia GPU, keys with more travel, a clickable trackpad, function keys, and a longer lasting battery, I might actually buy one. Less isn't more; more is more.

For those of us who are unfamiliar with FTDI and/or their "infamous driver"

which OS are you trying to run that won't work on a MBP?

...of 1 are meaningless in statistics. The summary's conclusions are lazy and sensational - aren't we better than this?

just saying...

It's not there yet, not even close. Zoom in on downtown SF and take a look at the buildings. But it is some cool tech.

The rotting flesh is what I was imagining. I mean, you can't go down half a hallway without encountering something that's decaying and/or half-dead in that game.

I can't imagine this being pleasant for a game like Doom...

and i'm fucking going.

are you (my fellow /.ers) sure this isn't a stalking horse for some kind of viral advertisement / alternate reality game?