Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×
Space

An Engineering Analysis of the Falcon 9 First Stage Landing Failure 110

Posted by Soulskill
from the ground-not-soft-enough dept.
schwit1 writes: AviationWeek has posted an analysis of SpaceX's latest attempt to land its Falcon 9 rocket on an ocean barge. Quoting: "SpaceX founder and chief technology officer Elon Musk tweeted that "excess lateral velocity caused it [the booster] to tip over post landing." In a later tweet that was subsequently withdrawn, Musk then indicated that "the issue was stiction in the biprop throttle valve, resulting in control system phase lag." In this statement, Musk was referring to "stiction" — or static friction — in the valve controlling the throttling of the engine. The friction appears to have momentarily slowed the response of the engine, causing the control system to command more of an extreme reaction from the propulsion system than was required. As a result, the control system entered a form of hysteresis, a condition in which the control response lags behind changes in the effect causing it.

Despite the failure of the latest attempt, SpaceX will be encouraged by the landing accuracy of the Falcon 9 and the bigger-picture success of its guidance, navigation and control (GNC) system in bringing the booster back to the drone ship. The GNC also worked as designed during the prior landing attempt in January, which ended in the destruction of the vehicle following a hard touchdown on the edge of the platform."
In related news, SpaceX is hoping to attempt its next landing on solid ground.
Graphics

Valve Bootstrapped Source 2 Engine On an Open-Source Vulkan Driver 60

Posted by timothy
from the live-quicker-prosper-more dept.
An anonymous reader writes A new article out details how Valve bootstrapped their VULKAN back-end with the Source 2 Engine over a period of just four months thanks to relying on an open-source driver. With designing for the open-source Intel Vulkan Linux driver developed by LunarG, Valve developers were quickly able to resolve issues and progress the driver in a turn-key manner. This Intel Linux driver will be released as open-source once the Khronos VULKAN specification has been published.
Games

Gabe Newell Understands Half-Life Fans, Not Promising Any Sequels 215

Posted by timothy
from the leave-'em-hanging dept.
jones_supa writes Half-Life 3 is undoubtedly one of the most anticipated games in history. While Valve transitioned from the revolutionary series that brought the company most of its original success, to online games like Team Fortress, Dota and Left 4 Dead, people still desperately want to believe that there is more coming for Half-Life.

In a recent podcast interview he had with Geoff Keighley, Valve CEO Gabe Newell opens up the current situation a bit more: "I'm a fan of TV shows, I'm a fan of writers, I'm a fan of movies, I'm a fan of games and I certainly understand why people are like, you know, hey I remember this awesome experience and I'm starting to get worried that I'm never going to have it again. I am a fan of Terry Pratchett and he has Alzheimer's, it's like, Oh my god, I may never get another great Discworld novel. [...] We aren't going to go all retro because there are too many interesting things that have been learned. The only reason we would go back and do a 'super classic' kind of product is if a whole bunch of people internally at Valve said they wanted to do it, and had a reasonable explanation for why it was."
Displays

Valve's SteamVR: Solves Big Problems, Raises Bigger Questions 124

Posted by Soulskill
from the like-why-do-i-need-three-dimensions-of-candy-crush dept.
An anonymous reader writes: When Valve debuted its SteamVR headset recently, it came as somewhat of a surprise — it certainly hasn't gotten the same level of hype as the Oculus Rift. But people who got to try out the new headset almost universally impressed with the quality of the hardware and software. Eurogamer has an article about the device expressing both astonishment at how far the technology has come in three short years, as well as skepticism that we'll find anything revolutionary to do with it. Quoting: "R demands a paradigm shift in the thinking of game designers and artists about how they build virtual space and how players should interact with it. We're only at the very beginning of this journey now. ... but this process will likely take years, and at the end of it the games won't resemble those we're currently used to. In short, they won't be Half-Life 3."

The author thinks simulation games — driving, piloting, and space combat — will be the core of the first wave, and other genres will probably have to wait for the lessons learned making sims good. He adds, "...the practical challenges are great, too — not least in persuading players to clear enough space in their homes to use this device properly, and the potential for social stigma to attach to the goofy-looking headsets and the players' withdrawal into entirely private experiences. I still think that these present major obstacles to the widespread adoption of VR, which even more practical and commercially realistic offerings like Morpheus will struggle against."
PC Games (Games)

Steam On Linux Now Has Over a Thousand Games Available 192

Posted by Soulskill
from the year-of-linux-on-the-console dept.
An anonymous reader writes: This week the Steam Linux client has crossed the threshold of having more than 1,000 native Linux games available while Steam in total has just under 5,000 games. This news comes while the reported Steam Linux market-share is just about 1.0%, but Valve continues brewing big plans for Linux gaming. Is 2015 the year of the Linux gaming system?
Displays

Developers Race To Develop VR Headsets That Won't Make Users Nauseous 164

Posted by timothy
from the or-nauseated dept.
HughPickens.com writes Nick Wingfield reports at the NYT that for the last couple of years, the companies building virtual reality headsets have begged the public for patience as they strive to create virtual environments that don't make people physically sick. "We're going to hang ourselves out there and be judged," says John Carmack, chief technology officer of Oculus, describing what he calls a "nightmare scenario" that has worried him and other Oculus executives. "People like the demo, they take it home, and they start throwing up," says Carmack. "The fear is if a really bad V.R. product comes out, it could send the industry back to the '90s." In that era, virtual reality headsets flopped, disappointing investors and consumers. "It left a huge, smoking crater in the landscape," says Carmack, who is considered an important game designer for his work on Doom and Quake. "We've had people afraid to touch V.R. for 20 years." This time around, the backing for virtual reality is of a different magnitude. Facebook paid $2 billion last year to acquire Oculus. Microsoft is developing its own headset, HoloLens, that mixes elements of virtual reality with augmented reality, a different medium that overlays virtual images on a view of the real world. Google has invested more than $500 million in Magic Leap, a company developing an augmented reality headset. "The challenge is there is so much expectation and anticipation that that could fall away quite quickly if you don't get the type of traction you had hoped," says Neil Young. (More, below.)
Graphics

Valve Developed an Open-Source Intel Vulkan GPU Driver For Linux 52

Posted by timothy
from the good-news-for-a-change dept.
An anonymous reader writes For those wondering when the first graphics driver for the new Khronos Vulkan API will materialize and for what hardware, it looks like the first driver could very well be for Intel graphics and it might not be too far away. It turns out Valve developed an Intel Linux Vulkan driver to help ISVs bootstrap their new Vulkan code, with Valve planning to open-source this driver code. This is yet another reason to love Valve, especially as Intel graphics on Linux don't even support OpenGL 4 yet.
Graphics

Source 2 Will Also Be Free 74

Posted by timothy
from the second-one's-free dept.
jones_supa writes Valve is officially debuting its Source 2 engine at GDC this week alongside a host of other new technologies, and it's expected to launch at a competitive price: free. The news of its release coincides with Epic making Unreal Engine 4 free-to-download and Unity announcing a full-featured free version of Unity 5. Valve is making a show of marketing Source 2 not just to developers, but game creators of all stripes — including Steam Workshop creators. "With Source 2, our focus is on increasing creator productivity," stated Valve engineer Jay Stelly in a press release confirming the launch. "Given how important user generated content is becoming, Source 2 is designed not for just the professional developer, but enabling gamers themselves to participate in the creation and development of their favorite games." It's worth noting that Valve also plans to release a version of Source 2 that's compatible with Vulkan, the open-standard graphics API that's considered heir apparent to OpenGL.
Games

Valve and HTC Reveal "Vive" SteamVR Headset 96

Posted by samzenpus
from the is-it-real? dept.
An anonymous reader writes Today Valve and HTC revealed the "Vive" SteamVR headset which is designed to compete with Oculus and others, which aim for a high-end VR experience on PC. The Vive headset uses dual 1200x1080 displays at 90Hz and a "laser position sensor" to provide positional tracking (head movement through 3D space), and also includes a pair of motion input controllers. The companies say that the Vive headset will be available to developers in Spring and receive a proper consumer launch holiday 2015, though no price has been announced.
Operating Systems

The State of Linux Gaming In the SteamOS Era 199

Posted by Soulskill
from the penguins-learning-to-rocket-jump dept.
An anonymous reader writes: It's been over a year since Valve announced its Linux-based SteamOS, the biggest push yet from a huge company to bring mainstream gaming to Linux. In this article, Ars Technica takes a look at how their efforts are panning out. Game developers say making Linux ports has gotten dramatically easier: "There are great games shipping for Linux from development teams with no Linux expertise. They hit the 'export to Linux' button in the Unity editor and shipped it and it worked out alright. We didn't get flying cars, but the future is turning out OK so far."

Hardware drivers are still a problem, getting in the way of potential performance gains due to Linux's overall smaller resource footprint than Windows. And while the platform is growing, it's doing so slowly. Major publishers are still hesitant to devote time to Linux, and Valve is taking their time building for it. Their Steam Machine hardware is still in development, and some of their key features are being adopted by other gaming giants, like Microsoft. Still, Valve is sticking with it, and that's huge. It gives developers faith that they can work on supporting Linux without fear that the industry will re-fragment before their game is done.
Displays

Valve To Reveal Virtual Reality Dev Kit Next Week At GDC 48

Posted by timothy
from the they-want-your-eyeballs dept.
An anonymous reader writes Gaming giant Valve has been researching augmented and virtual reality for some time. Early on, the company worked closely with Oculus, sharing research findings and even adding support for TF2 to Oculus' first VR headset, the DK1, back in 2013. After demonstrating their own prototype VR headset at Steam Dev Days in early 2014, and then a modified version later in the year, Valve is now ready to take the wraps off a 'previously unannounced ... SteamVR Dev Kit,' which will make its debut at GDC next week. SteamVR is the name of the software adaptation of Steam's 'Big Picture' mode that the company revealed early last year, allowing players to browse their Steam library and play supported games all in virtual reality.
The Almighty Buck

Will Greek Finance Minister Varoufakis Support Cryptocurrency In Greece? 253

Posted by timothy
from the for-health-points dept.
giulioprisco writes New Greek Finance Minister Yanis Varoufakis, former Economist-in-Residence at game developer Valve Corporation, sees something like Bitcoin — or, more likely, a state-controlled "Fedcoin" — possibly playing a role in the (necessarily creative) rescue of the Greek economy. "The technology of Bitcoin, if suitably adapted, can be employed profitably in the Eurozone," he said.
Censorship

Valve Censoring Torrent References In Steam Chat 216

Posted by samzenpus
from the watch-what-you-say dept.
dotarray writes It seems Valve is restricting just what you can talk about when using the Steam chat service. Specifically, any reference to a particular torrent site is being stripped from conversation, while mentions of other pages trigger a warning that the site is "potentially malicious." In the wake of website KickassTorrents being taken offline earlier this week, people quickly noticed that references to the torrent site were being stripped from chat - with no warning, notificiation, or acknowledgement that anything is missing. We've seen censorship before, with chat providers blocking certain words, replacing key letters with asterisks or simply substituting inoffensive words for those considered 'problematic.' That's not what Valve is doing here though - the entire message is disappearing, not just the troublesome domain.
Transportation

Underwater Vehicle Uses a Balloon To Dart Like an Octopus 73

Posted by timothy
from the in-like-a-lion-out-like-an-octopus dept.
Zothecula writes When you inflate a balloon and then release it without tying the valve shut, it certainly shoots away quickly. Octopi utilize the same basic principle, although they suck in and then rapidly expel water. An international team of scientists have now replicated that system in a soft-bodied miniature underwater vehicle, which could pave the way for very quickly-accelerating full-size submersibles.
The Almighty Buck

Valve's Economist Yanis Varoufakis Appointed Greece's Finance Minister 328

Posted by timothy
from the finger-on-all-the-buttons dept.
eldavojohn writes A turnover in the Greek government resulted from recent snap elections placing SYRIZA (Coalition of the Radical Left) in power — just shy of an outright majority by two seats. Atheist, and youngest Prime Minister in Greek history since 1865, Alexis Tsipras has been appointed the new prime minister and begun taking immediate drastic steps against the recent austerity laws put in place by prior administrations. One such step has been to appoint Valve's economist Yanis Varoufakis to position of Finance Minister of Greece. For the past three years Varoufakis has been working at Steam to analyze and improve the Steam Market but now has the opportunity to improve one of the most troubled economies in the world.
Media

Steam Broadcasting Now Open To Everyone 93

Posted by Soulskill
from the for-when-you're-too-lazy-to-play-a-video-game dept.
jones_supa writes: The beta test phase of Steam Broadcasting feature has been completed. It is now available to everyone by updating the client to the newest version. The feature allows users to watch and stream games to and from users on your friends list. Right-clicking the name of a friend who is in-game offers the option to "Watch Game." This will send a request which needs to be accepted by the player so that the spectator can hop in. A chat is also included. Steam Broadcasting was first announced late last year as an alternative to third-party streaming services like Twitch, Ustream and Hitbox.
Bug

Steam For Linux Bug Wipes Out All of a User's Files 329

Posted by Soulskill
from the big-oops dept.
An anonymous reader sends a report of a bug in Steam's Linux client that will accidentally wipe all of a user's files if they move their Steam folder. According to the bug report: I launched steam. It did not launch, it offered to let me browse, and still could not find it when I pointed to the new location. Steam crashed. I restarted it. It re-installed itself and everything looked great. Until I looked and saw that steam had apparently deleted everything owned by my user recursively from the root directory. Including my 3tb external drive I back everything up to that was mounted under /media. Another user reported a similar problem — losing his home directory — and problems with the script were found: at some point, the Steam script sets $STEAMROOT as the directory containing all Steam's data, then runs rm -rf "$STEAMROOT/"* later on. If Steam has been moved, $STEAMROOT returns as empty, resulting in rm -rf "/"* which causes the unexpected deletion.
Media

Valve Rolls Out Game Broadcasting Service For Steam 92

Posted by Soulskill
from the it's-the-new-espn dept.
An anonymous reader writes: Streaming live video game footage has become increasingly popular over the past several years — popular enough that Amazon was willing to shell out $970 million for Twitch.tv. Now, Valve has announced a rival: Steam Broadcasting. Users signing up for the beta test have the option to broadcast the game they're playing. They have several options about who can see their stream: invite-only, friends only, and publicly visible. Viewing a stream is currently supported by the Steam client itself, Google Chrome, and Apple Safari. It only works on Windows 7 and 8 at this point, but Valve promises support on Linux, OS X, and Windows Vista in the future.
Games

Top Counter-Strike Players Embroiled In Hacking Scandal 224

Posted by timothy
from the people-actually-get-excited dept.
An anonymous reader writes Counter-Strike: Global Offensive is one of the world's fastest growing eSports, but the community has been rocked by scandal in the last week, with several top players being banned by Valve for using various hacking tools to improve their performance. With the huge Dreamhack Winter tournament taking place this weekend, the purge could not have come at a worse time for the game, and fans are now poring over the archives for other signs of foul play in top tier games — be sure to look out for these tell tale signs while playing.
Input Devices

Worrying Aspects of Linux Gaming 265

Posted by Soulskill
from the year-of-linux-on-the-console? dept.
jones_supa writes: Former Valve engineer Rich Geldreich has written up a blog post about the state of Linux Gaming. It's an interesting read, that's for sure. When talking about recent bigger game ports, his take is that the developers doing these ports just aren't doing their best to optimize these releases for Linux and/or OpenGL. He points out how it took significant resources from Valve to properly optimize Source engine for Linux, but that other game studios are not walking the last mile. About drivers, he asks "Valve is still paying LunarG to find and fix silly perf bugs in Intel's slow open source driver. Surely this can't be a sustainable way of developing a working driver?" He ends his post by agreeing with a Slashdot comment where someone is basically saying that SteamOS is done, and that we will never get our hands on the Steam Controller.