Custom PC, Issue 117

Custom PC Issue 117This month’s Custom PC sees my interview slot taken up with a chat to Nick Thibieroz, senior manager of AMD’s Independent Software Vendor (ISV) Gaming Engineering division, regarding his company’s latest attempt at increasing the immersion of games: TressFX.

If you’re not familiar with the technology, and if that’s the case shame on you for not following my work on bit-tech, TressFX – or to give it its full name, TressFX Hair – is a GPU-accelerated physics engine designed to simulate the interaction between a character’s hair and the surrounding environment. Wind, rain, branches, even the character’s body all interact with thousands of simulated hair strands to create a surprisingly realistic effect.

It’s something the industry has been working towards for years – hardly a SIGGRAPH event goes by without Nvidia showcasing another hair simulation system – but the computational complexity of the task has made it difficult to implement in a working game engine. That’s something AMD has solved, and it waited until it had the system in a shipping game – the new Tomb Raider reboot – before announcing the technology.

The biggest feature of the issue, however, is a special one: an in-depth look at how the development of mobile hardware differs from that of desktop hardware. With input from industry veterans including Nvidia, AMD, Intel and Imagination Technologies, it’s a – hopefully – interesting look at how developing for portable platforms has resulted in some significantly different technologies emerging.

Nvidia is a perfect example: it talks up its Tegra mobile processor as having GeForce-like graphics processing elements, but in truth there’s a distinct difference in how the two technologies work. Interestingly, it’s also the case that development of mobile processing hardware – which has to work in very tight power envelopes – has dramatically changed how the company approaches its power-hungry desktop graphics hardware, too.

It’s a big feature, and one I’m proud to have worked on: hopefully, by the end, readers will be able to better understand how smartphone and tablet hardware – which, thanks to projects like the Kickstarter-funded Ouya console, are increasingly finding their way onto people’s desks – compares to traditional desktop devices.

If you want to learn more about TressFX Hair and its development, or about the development of mobile-centric hardware and the challenges therein, you could do worse than picking up a copy of Custom PC Issue 117 – available in dead-tree format and digitally via Zinio or most other services.

This also marks the last time my column in Custom PC will take the form of a two-page interview spread: big changes are afoot, and I’m proud to say that the column will be taking on a very different – and hopefully more engaging – format from the next issue onwards.

Custom PC, Issue 115

Custom PC Issue 115This month’s interview column for Dennis Publishing’s Custom PC talks to Nvidia’s Jason Paul about his company’s latest surprise hardware launch: the Project Shield hand-held gaming console.

Based around Nvidia’s Tegra 4 system-on-chip processor, which combines four ARM Cortex-A15 general-purpose processing cores with GeForce graphics processing technology and a power-saving Cortex-A9 core for background tasks, Project Shield is a departure for the company. Rather than a reference design or OEM offering, Project Shield is to be launched – first in the US, with the UK to follow later in the year – as a full retail offering.

It’s certainly a novel device: looking like a small TFT glued to an Xbox controller, it provides access to Android games and apps while also connecting to desktop PCs running Nvidia GeForce graphics cards and streaming full-fat PC games – cloud gaming minus the cloud, in other words. Fog gaming? Mist gaming? Whatever.

Paul was full of interesting anecdotes about the project, including the fact that the original prototype of the device – which has been dreamed up, designed, developed and produced in under a year – was little more than a smartphone and a game controller screwed together with a plank of wood.

“I don’t think I would be quite as able to express the pain and agony of cramming all this into a device as well as our engineering team! It was pretty challenging. To give you one anecdote, we got a lot of the device designed and laid out and then realised that we had these amazing speakers that were larger than we had allocated in the device. So, we had to go back and redesign a bit of the area around the speakers to be able to cram in the bass reflex quad speaker audio.”

This interview was actually something of a last-minute change to the planned schedule. A previous interview with open-source engineer Andrew Back, originally due to appear in this issue, will now appear in Custom PC Issue 116.

The rest of the interview appears in Custom PC Issue 115, available in stores now and digitally through the Zinio service.