turkey3_scratch :
cst1992 :
I'd sure like to know more about that PowerVR card. Is it a full-fledged graphics card, and if not, what is it then? And what are they doing that NVIDIA and AMD are not?
Other companies tackle ray tracing as a GPU compute problem and use OpenCL, CUDA or other compute APIs to accelerate ray tracing tasks. Unfortunately, this approach doesn't work because maintaining coherency when shooting many rays becomes a huge problem.
Our approach in PowerVR Wizard is different. We've added dedicated ray tracing hardware to take care of the coherency problem while also keeping the bandwidth traffic low.
The hybrid rendering technique is a combination of rasterization and ray tracing that runs on Wizard GPUs. It can be implemented for example in game engines as a way to render realistic effects (shadows, reflections, transparency etc.) However, the Wizard architecture can also deliver the performance required for fully ray traced scenes in real time (e.g. path tracing).
Hope this answers your questions.
Regards,
Alex.
It's work seems more like it'd be useful in a cheap workstation environment, perhaps.
I think its mostly smoke and mirrors.
In their CES 2016 video, its the PowerVR Wizard chip. A few months earlier, they refer to it as hybrid rendering, where they are adding ray tracing to their PowerVR Rogue architecture. He also mentions that this level of ray tracing is coming to their product line in 2-3 years, but now there's a head to head?
At CES 2016, the presenter goes on record stating its their first time demoing ray tracing. More accurately, it might be their first time showing a head to head competition type demo with a "competitor".
Another factor is how the test is programmed. Thanks to Anandtech, I've learned a little about FP16, FP32 and the trade-offs. Are we talking about FP16 instructions here?
We know Maxwell's double precision is 1/32 the speed of single precision.
I can't help but think this 'demo' is very cleverly created to exploit multiple weaknesses in an off the shelf, consumer graphics card, and the hardware that's whomping it isn't really much to be excited about once you factor in the test, the test results, and how any of it relates to more real world applications.
Don't get me wrong, they have some amazing demos. I was really impressed with the technology for store owners. Overhead cam feed is processed by their GPUs to create a ton of useful metadata, interpreting body posture / movements, etc, to gather which products produce the most interest, what marketing displays are working and which aren't, facial recognition / expressions, etc. Those may be more a function of the software, but such low power GPUs processing it in near real-time is great.
Lastly, I'm obviously just the average joe trying to understand why I'm seeing this ray tracing pop out of a 10 watt passively cooled pcie card, when a $650 msrp consumer graphics card struggles, so go easy on me lol.