Intel's Linux OpenGL Driver Faster Than Apple's OS X Driver 252
An anonymous reader writes "The open-source Intel Linux graphics driver has hit a milestone of now being faster than Apple's own OpenGL stack on OS X. The Intel Linux driver on Ubuntu 13.04 is now clearly faster than Apple's internally-developed Intel OpenGL driver on OS X 10.8.3. when benchmarked from a 'Sandy Bridge' class Mac Mini. Only some months ago, Apple's GL driver was still trouncing the Intel Linux Mesa driver."
That's great news! (Score:5, Insightful)
Well, that is great news, but if Intel played a hand in its development, then that would only make sense if Intel did NOT play a hand in helping Apple develop the Apple version of the OpenGL driver.
Since Intel is the creator of the architecture for the video hardware in question, it would be only sensible for Intel assisted development to be better than development that occured without Intel's help.
Either way, go go Gnu/Linux (and open source!) !!!
Re:That's great news! (Score:4, Funny)
Nice nickname you got there. Wonder where the inspiration came from. Achem, now, on to the commentary!
Well, that is great news, but if Intel played a hand in its development, then that would only make sense if Intel did NOT play a hand in helping Apple develop the Apple version of the OpenGL driver.
Compiler warning on line 1: .Comments.Item("43798671") has ambiguous syntax. Should contain (3) of type=sentence, but has (1).
Since Intel is the creator of the architecture for the video hardware in question, it would be only sensible for Intel assisted development to be better than development that occured without Intel's help.
Compiler error on line 3: .Comments.Item("43798671") Variable of type 'sensible' cannot be narrowed to class 'business sense'. Consider replacing with 'legal sense'. Note: include Slashdot.Comments.Inflammatory.Duopoly module to access this object.
Either way, go go Gnu/Linux (and open source!) !!!
Compiler warning on line 5: .Comments.Item("43798671") contains excessive punctuation. Should contain (1) of type=punctuation_exclaim, but has (4). .Comments.Item("43798671") contains duplicate objects. .Comments.Item("43798671") 'Gnu/Linux' is depreciated. Consider using 'Linux' instead.
Compiler warning on line 5:
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Nice nickname you got there.
Yeah. Caused a few double takes first time he cropped up. More than a little irritating to ape the name of a well known poster. But hey, you've reached some exhaluted heights. The rest of us have to make do with AC stalkers. Now, if slashdot actually implemented the achievements mentioned on April 1, I suspect this would be one of the higher ones. So, er... congratulations, I guess...? Next up, you need to get a +5 (Troll), I suppose.
But anyway, back on topic[*] (to the main thre
Re:That's great news! (Score:5, Funny)
Re:That's great news! (Score:5, Funny)
No, I'm pretty sure "depreciated" is right, since no ceasefire has been called. Think of it as a more tongue-in-cheek equivalent, along the lines of PHP deprecation, which actually means "popular."
Snarky. I like it! You get my stamp of approval. And you're right, that does seem to be how PHP develops. But more seriously, the 'gnu/linux' tag was an attempt to politicalize the kernel by RMS. He was sharply rebuffed by Linus and others. Most distributions are less... puritanical... about what to include. So when I say 'linux' for this driver, I mean all flavors, not just the 'pure' gnu/linux ones, hence the tag 'depreciated'. Also, I tagged it as such because I knew it would piss someone off and get me modded down. :D And it succeeded brilliantly at that, proving that there are at least a few of the old guard still lurking on slashdot.
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I believe the slogan at hand is "Grammatik macht frei [wikipedia.org]." :)
I understand your stance on the "GNU/" prefixing, although personally I believe the tag should be applied whenever a system contains significant GNU components, puritanism not required. After all, we call it "Linux" when the system contains Linux, not because it's just Linux.
But, um, yeah, I honestly thought that post was a pretty direct cruising-for-a-bruising affair. Congrats on getting it modded up at all!
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Exception? No, no, Slashdot is probably the pinnacle of the gender divide. I can count the number of (confessed) estrogen-infused users on here on two hands. Even 4chan is less homogeneous, despite the... rich tradition of unrestrained abuse to every imaginable target. The popularity curve moved along a long time ago; I don't think it's wrong to say the average Slashdot user has more in common with Timothy Lord than Homo starbucksii—one need only look to the voices that pipe up during the numerous "IT
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But hey, on the bright side, I bet you've gotten fewer creepy marriage proposals through here than I have.
You're right. I just get creepy descriptions of lewd sexual acts and rape threats; Only a couple marriage proposals.
And there's always the mysterious anonymous butt pirate, but given the rate of such posts I'm starting to wonder if there's only one guy in the entire world who does that, sort of like Wowbagger the Infinitely Prolonged.
Oh we have that here. There used to be Thog, who always posted in all caps and pretended to be a caveman. He was the reason for the "lameness" filters you sometimes encounter when trying to post. Then there was the 'natalie portman' and 'hot grits' puberty that slashdot went through on its way to full fledged "ur gay" maturity...
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...and now I'm wondering how old a thread has to be before people with mod points leave it for dead.
You and me both. You want my advice? Milk it for everything it's worth. You'll be able to coast on that karma for months. :D
Re:That's great news! (Score:4, Insightful)
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Re:That's great news! (Score:4, Insightful)
Is there any reason to suspect that Intel is withholding any assistance that Apple is requesting?
Since they are actively working on an OSS driver, they clearly don't have some sort of 'zOMG Intellectual Secrets!!!' concern(and it's not as though Apple would be averse to signing the NDAs in any case), and Apple buys a lot of Intel chips(including a pretty good mix of the higher margin ones. They don't move Xeons for shit; but they also don't ship anything lower-end than an i5. That's not the sort of customer you play petty little games with when it comes to engineering support.
Re: That's great news! (Score:2)
Apple also gives Intel plenty of free marketing, and doesnt take any of that Intel Inside co-branding money because of their refusal to put annoying stickers on their product. And don't forget that Apple makes for a decent hedge against Microsoft doing something Intel doesn't like.
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The difference is down to the differing driver architectures and the way the OS manages resources for OpenGL.
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Testing methodology... (Score:3)
Different kernels.
Different user environment.
Different services running.
Different implementations of the OpenGL API
But I'm sure it's the driver, and only the driver making the difference here. What a ridiculous comparison.
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But I'm sure it's the driver, and only the driver making the difference here. What a ridiculous comparison.
If you look at TFA, he's making both a whole-stack comparison and separately a driver version comparison.
The OSX stack appears to fair worse against most of the linux tests, and the new driver does marginally better than the old driver.
Thank you, Intel driver folk, for reassuring my purchasing decision (based on linux driver support).
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Re:That's great news! (Score:5, Insightful)
Honestly, I love the fact that linux is not mainstream on the desktop yet.
I live my (computing) life blissfully, untroubled by the rolling waves of forced upgrades and virus panics that everyone around is going through and I can just smile and say "sorry, I run linux, I have no idea how to fix that" when they ask me to help them with their mess.
I truly hope linux NEVER becomes mainstream.
Re:That's great news! (Score:5, Insightful)
My phone runs Linux. My tablet runs Linux. My netbook runs linux. My Set top box runs linux. My Entertainment Computer runs linux. All by default out of the box. My Email server/Social network/offsite backup solution runs linux. I do keep a Win7 box handy, but even that has a Linux partition.
No CompileKernel WorkOutDependancies nonsense. The only reason I know this (besides being a geek) is by digging in the "About This Device" thingy and reading the kernel version.
When do you think Linux will become mainstream?
Re:That's great news! (Score:5, Insightful)
When do you think Linux will become mainstream?
Ah and this is where Stallman was right (damn him). Replace the OP's comment with GNU/Linux. Then it all makes sense.
Personally, I love my GNU/Linux desktop. It is by hackers for hackers and I love it that way. If it becomes mainstream then it will not be what I want since for hackers is never going to be mainstream. I'm happy with that.
I have no particular desire for it to be exclusive and that is not a goal of mine. I do have a desire for it to be hacker friendly and I accept that that will not be a mainstream thing.
Re:That's great news! (Score:4, Interesting)
My phone runs Linux. [...] No CompileKernel WorkOutDependancies nonsense.
My phone runs Linux, too. The stock kernel is abysmal crap, so I run an upgraded kernel. Since it's a superbitch to build new kernels for many Android devices, I let someone else do the dirty work. Back in the early days of PCs I would just build my own kernel at the drop of a hat, but now I literally cannot build a new kernel for my phone. I can't even get an Android source tree because git is shit. So I've gained convenience, but I've lost flexibility. Don't pretend that nothing has been lost.
With that said, Android is pretty damned mainstream.
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I get what you are saying but remember when Flash was required all over the web but the only Flash support in Linux was several versions behind and pretty much useless? That really sucked! Sure, HTML5 seems to be slowly killing Flash but what happens when the next proprietary thing comes along and we need it because all the content out there uses it? That's the problem with not being mainstream on the desktop.
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Then Jobs declared that Flash was uncool and that his platform wasn't going to support it. The same argument that would have earned derision from the Linux camp was lauded by a loud cabal of fanboys and media shills.
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Post your address, I'll ship you several!
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The real question is how fast the Windows driver is...
ask the twelve people who care? (Score:2)
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Some of us have to run Boot Camp because that's the best way to run PC games on a Mac. I would love not to do it, but I like OS X too much to ditch it just because of games.
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It's not 12.
China is a huge market for Mac hardware (phones, but also laptops). It's also a place where the only operating systems of note are pirated XP, pirated Windows 7, and bundled OEM Windows (various versions).
Just so you know (Score:5, Informative)
For all you integrated GPU haters and Intel haters... the Intel Linux drivers are straight up excellent. I do not believe there are better Xorg drivers available in Linux, including NVidia. Intel has really been diligently working to make their Xorg drivers work well and they deserve credit. For desktop work, HD video and other non-first person shooter use cases both the hardware and the drivers are a godsend and I thank Intel.
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I only, wish, wish wish that I could buy a discrete card from Intel!! PCI or PCI-E, I don't give a damn!
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I'm sure you could find an i740-powered card on eBay for $5.
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According to Wikipedia [wikipedia.org], the Intel i740 was AGP.
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i740 was AGP only, because Intel was trying to use it as a lever to push people to Slot-1 away from Socket-7, to screw AMD over. Those cards were also notorious for only working in AGP slots that happened to talk to Intel chipsets, and Intel CPUs.
Yeah, I supported one of those products long ago - the Diamond Stealth II G460 [anandtech.com].
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I have an Intel i740 in my desk if you're really that desperate...
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Everyone seems to say that, but I have never found it to be true. For example, the multi-monitor support for my Intel HD 4000 is terrible. It rarely works right. First, it usually doesn't work. It just outputs to one display when I ask it to output to two. Then when I can get it to work, one of the screen is usually statically or flickers. In addition, the GPU is supposed to support three displays under Windows. I have never gotten that to work and as I said, two often don't work. I have never had a
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Everyone seems to say that, but I have never found it to be true. For example, the multi-monitor support for my Intel HD 4000 is terrible
Not wanting to duel with anecdotes, but I've found the support to be excellent on the 4000 and older 915. I suspect the problem you're having is not with the drivers but with your desktop environment instead.
Which xrandr client do you use?
Also, if one of your connections is analog, sometimes, espeically with some older monitors and with some refersh rates, they are quite p
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While OSX's Intel GPU performance is now lagging behind linux, I have to say I'm genuinely impressed by the quality of the drivers. I've never seen glitches or corruptions in rendering - and speaking as a guy who's been writing opengl for 10+ years, I've seen a lot of shit drivers. Particularly on the OSX side of things.
Intel's drivers for OSX ( whether written by apple or intel, IDK ) always produce correct output, even if performance isn't always top notch.
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I do not believe there are better Xorg drivers available in Linux, including NVidia.
I do not believe there are better open source Xorg drivers available in Linux, including NVidia.
There, fixed that for ya ;)
Bad citizen (Score:5, Insightful)
Although Nvidia's binary driver tend to be rather fast,
Nvidia has been a rather bad citizen regarding drivers.
They don't offer any help for opensource drivers, at least not the desktop ones (well, at least things are starting to move for the Tegra, thanks to the strong dominance of linux in the embed market).
And they don't play well along other linux technologies. They prefer to do things their way (which is trying to do an as straigh as possible port of their windows code-base) which sometime leads to missing feature, instead to use the facilities which are developed by the kernel folk. (e.g.: the whole Linus' "Fuck You!" scandal). Optimus whould have been implemented much earlier, had Nvidia decided to start collaborating with other effort in that direction. (Well on the other hand, the OSS community wasn't that much helpful when they decided to finally try using DMA-BUF).
So although Nvidia's drivers are fast, they are just a monolithic bloc of proprietary secret and doesn't elegantly interface with everything else. They are not nice.
Re:Bad citizen (Score:5, Insightful)
Except the open source community doesn't take "no" for an answer, it's like calling a hermit a bad citizen simply because he wants nothing to with the rest of society. Those technologies you talk of won't work with a blob because there's no ABI and GPL hooks, so it essentially boils down to the same: nVidia doesn't do open source. They only want to offer you the blob, period. But for a lot of people in the OSS community it seems doing nothing at all is the same as being evil. Either you're with us, or you're against us.
Re:Just so you know (Score:5, Funny)
I do not believe there are better Xorg drivers available in Linux, including NVidia.
The problem with the intel drivers is that no matter what settings I try all the video playback through emacs is CHOPPY AS HELL!. It's unreadable. The Xorg drivers from NVIdia at least can deinterlace without crashing, but they are still choppy. I'll wait for the Ubuntu version.
Re:Just so you know (Score:4, Funny)
video playback through emacs
I think I figured out your problem...
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uh woosh? I hope?
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The Xorg in his post gave it away. You need to recompile emacs with direct framebuf support. Or wait for Wayland, Mir or whatever platform comes next promising to fix all these sorts of performance problems in X.
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promising to fix all these sorts of performance problems in
The performance problem where it's faster than OSX or the performance problem where it gets better FPSs in games than Windows? :)
Re:Just so you know (Score:4, Funny)
no matter what settings I try all the video playback through emacs is CHOPPY AS HELL!
During video playback, you should try to reduce the number of Eliza windows to less than five, and also refrain from running more than two other operating systems using the elisp engine as a VM.
Also it's well known that any system installations of VI or VIM will spike the processor during emacs use out of jealously; I suggest you delete them.
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I try all the video playback through emacs is CHOPPY AS HELL!.
Well, drop emacs and use vim instead...
No, in all seriousness drop emacs and use xterm and mplayer with either the aalib or libcaca output. Much better for enjoying videos in full ASCII glory.
Or, of course
telnet towel.blinkenlights.nl
but either way, xterm is the way to go.
why is this news? (Score:4, Insightful)
A company that makes and designs chips is better at coding drivers to those chips than a PC maker that just sources those chips as components... Why is this shocking?
Re:why is this news? (Score:4, Insightful)
No mater who makes it, in the end, you are getting more performance on Linux than on OS X. Unless you can download a better performing driver for OS X, this is an argument for using Linux.
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Not unless the software you need OpenGL performance for runs under Linux, too.
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...Really? You're making a tremendous leap to that conclusion. You think ultimately slight performance gains in OpenGL over another OS is enough to convince all the software developers out there to switch to Linux? Just because OpenGL performs a little better? Are you honestly that daft?
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It's an argument for using Linux, sure, but not a good one. Especially on its merits alone.
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And honestly if your Linux vs. OSX decision is based on a narrow difference in performance, then you probably aren't considering cheap desktop hardware to begin with.
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Okay, sure.
Except that nobody that cares about OpenGL performance is using an Intel integrated GPU as their sole source of rendering horsepower. If OpenGL is important to you, you spend the extra money for a real professional-graphics GPU like Quadro or FireGL, since the time saved waiting for things to render literally pays back the card's cost in a few weeks.
Also, there's way more variables in this comparison than the driver, and Intel could also publish their own Mac OS X kexts for their GPUs, like Nvid
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No-one said it was shocking?
However the drivers for the open-source OS is good. Not only for the proprietarian one. That's nice.
Re:why is this news? (Score:3)
Why is this shocking?
Well, if you've ever worked with hardware venduh's you'll know that while many of them make decent hardware, they not only write terrible software but also jealously guard this terrible software as if it is something to be proud of as opposed to embarrassed of. Seriously these hardware companies seem to believe that their buggy, barely non functional XP only drivers and programs are some mega proprietary advantage, rather than the actual piece of hardware they're trying to hawk.
A hardwa
why can't ati / nvidia / intel have there own driv (Score:2)
why can't ati / nvidia / intel have there own driver downloads for OSX like they do for Linux and windows?
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I guess its because on Windows/Linux you see that there is driver bugs on each version of the driver, so all Apple really needs to do is to create testsuit, not tell there is a testsuit, and then test the driver. If it has bugs that is found, do not approve the driver. If there is a update, but there is no real improvement, do not update the driver, etc.
Seeing the insane bugs that pile up and that is version specific, at some point it makes too much sense, especially since drivers are maintained.
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Nvidia does:
http://www.nvidia.com/object/macosx-313.01.01f03-driver.html [nvidia.com]
http://www.nvidia.com/object/mac-driver-archive.html [nvidia.com]
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Because there is absolutely no documentation or support for development on Mac [apple.com] from Apple? They sure don't have a whole section of documentation [apple.com] specifically for OpenGL. Or driver development [apple.com]. Apple also doesn't put hundreds of their engineers in a convention center for a week [apple.com] specifically to answer developer questions every year, or stream any of those sessions for free over the Internet. And they definitely don't have a track at that event specifically for graphics and games [apple.com]. Oh, and no one has ever
Great! (Score:2, Funny)
Great news for all those OpenGL games out there like Minecraft and um....
Re:Great! (Score:5, Insightful)
Did you know that you can run steam and source engine games on ubuntu now?
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Indeed, it's cool that Linux now has access to some new 7-9 year old games.
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Not just some, but tens of them.
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It wasn't so much trolling as a light jab in reference to the source engine being ported over.
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Did you know that you can run steam and source engine games on ubuntu now?
Steam yes.
Number of games limited.
Anyway what I wanted to say was: Did you know you can also run them on other distributions than Ubuntu?
As in OpenSUSE 12.3 here. Not that I've got anything to play on it. But Steam runs. :D
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I've played quite a few (TF2, World of Goo, Serious Sam 3, HL, CS) on Fedora 18 quite beautifully.
Sigh (Score:5, Interesting)
When you post stuff like that, and fanboys mod it to +5, it looks really silly. The reason isn't because it is not true, but because it is not impressive. Yes, Linux has a few games for it including some older Source games. Yay. Trying to imply that because it has Steam it has games is silly. Roughly 6 of my 163 Steam games will run on Linux and most of those are the older Source engine games.
Having Steam doesn't mean you get games. It means there's a platform to sell games on that many Linux users will hate on (costs money, has DRM, no source code). The games themselves have to be ported and so far, not much of that has been going on.
It does not strengthen your point when you go and make a rather silly argument. The "but it has Steam!" argument that keeps getting trotted out when someone comments on Linux and gaming reminds me of Mac users back in the 90s pointing to the 10 or so old titles you could find in the store as proof that there were plenty of games on the Mac.
Linux gaming is not in a good state currently, and trying to mask that is silly.
Please stop hijacking the word "gaming" (Score:3)
I just hate it when some supposedly "hardcore" gamer redefine "games" to refer to certain watt-sucking/heat-sink-busting games. FYI there are plenty, at least hundreds, maybe even thousands of games for Linux (if you're willing to go the grey market emulator route). Maybe not games as visually impressive as Crysis. But they're there. A simple "apt-cache search games" or its Fedora/rpm equivalent should prove my point.
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Now only if everything on Steam would run on all platforms that can run Steam...
(Mac OS X suffers from the same effect.)
Re:Great! (Score:5, Interesting)
I just popped open the Mac App Store and took a glance at the first page of games. Just to name a few that were listed, there's Borderlands 2, CoD: Black Ops, Batman: Arkham City, Deus Ex: Human Revolution, Civ V, Bioshock, Amnesia, Witcher 2, Assassin's Creed II, and XCOM: Enemy Unknown. And if I pop open my copy of Steam, I can find pretty much all of Valve's titles, as well as a whole lot more. Granted, they're not all the latest and greatest (e.g. Bioshock, not Infinite; AC2, not AC3; Black Ops, not Black Ops II), but it's a wide selection of well-known games from a number of developers.
Jokes like yours are funniest when they use humor to take the edge off of a point that would otherwise be painful to swallow, but yours is simply off the mark entirely. Unreal, Source, Gamebryo, id Tech, IW, and Unity engines all work with OpenGL and have a number of games out using it. There are strong rumors that Crytek already has an in-house version of CryEngine 3 running with OpenGL, and based on job listings at DICE, it looks like they're porting their Frostbite engine over as well for use with Battlefield.
Given the disappointment that some of the major game developers have expressed (e.g. Gabe Newell's public statements) towards Windows 8, along with Microsoft's signals that DirectX may be at its end of life, is it really any surprise that all of the major game engines have already been ported or are in the process of being ported to OpenGL? Even more so when you consider that the two major smartphone OSes (i.e. the platforms on which most games today are now played) only make use of OpenGL? Not to mention that on gaming devices that support one or both of OpenGL or DirectX, all but one of those devices (Xbox) supports OpenGL in addition to or to the exclusion of DirectX? And the fact that Linux is quickly gaining recognition as a high-performance gaming platform and is getting some love from developers and publishers? Finally, is it really all of that surprising that the developers are actually making use of these game engines to put games on as many devices as possible?
Mind you, I'm not suggesting that DirectX should be abandoned, by any means, since it's still quite powerful and is still the library that's used on one of the major consoles out today. All I mean to do is point out the folly in your assertion that OpenGL is not being utilized in games.
really need this (Score:3)
Re:really need this (Score:4, Informative)
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GMA950 does "support" PS 2.0, but only on Windows through Direct3D. I say "support" because even though it technically does support it, it has some extreme limitations in what is supported in hardware, and as soon as you exceed them, which is very easy even on the simplest of shaders, it reverts to a software implementation and the performance plummets.
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Accuracy? (Score:4, Interesting)
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That's the difference between "gaming" OpenGL ICD and "professional" OpenGL ICD. It's perfectly possible to have a graphics card that rules the roost at rendering AutoCAD and Maya 3D, but suck out loud at gaming framerates. Most of the Quadro line of GPUs are this way - they are optimized for accuracy rather than shoving as many frames out the door as possible.
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The problem with your idea is that with the nVidia driver you get a slider, even on Quadro cards, and you can drag it towards performance. At which point, even the Quadro cards will compromise visual quality and let you play a game just fine. I certainly got good frame rates (for the number of processors, anyway) with both QuadroFX GPUs I've owned.
osx is not all that (Score:2, Interesting)
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It runs deeper than that. HFS is ancient, slow and inefficient. Memory management is a joke. I'd say enough "iOSization" of OS X, OS X should really make a leap jump into an innovative desktop OS. And I say this from my Mac.
First of all it's HFS+ [and then some], and your comment about Memory Management is a joke is the real joke. Like hell Linux is an innovative OS. It's been getting worse in quality and stability since the end of 2.6.
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Apple knows that HFS is in need of replacement, which is why they had a fully functional ZFS [wikipedia.org] on Mac OS X 10.6 at launch, but removed it at the last second because they could never come to licensing terms with Sun.
It is still updated as a forked open source project, and there is a commercial version that has a newer version of pool / ZFS available for purchase.
Very nice but... (Score:2)
If you need/want 3D performance you should still get a discrete video card.
Just a bit of perspective... (Score:3, Insightful)
Now an important factor is that this process will improve apps that the developers believed to be important; other apps will get less improvements. An app that nobody cares about might run into a speed bump that could easily be fixed, but it doesn't get fixed because nobody cares. And here we run into a problem with the posted benchmarks: They are all apps that are primarily used on Linux, and that no MacOS X user has ever heard of. Therefore, we may assume that no OpenGL developer at Apple has ever looked at these apps and has tried to remove speed bumps in these apps. Therefore, these apps might very well be non-typical.
Consider a situation where a developer can use two techniques A and B, which should in theory run equally fast. And for some reason A runs faster on MacOS X, and B runs faster on Linux. So Mac app developers tend to use A, and Linux app developers tend to use B. As a result, Mac driver developers will try to improve A, while Linux driver developers will try to improve B. Which makes the speed difference bigger, Mac and Linux developers will even more tend to use on technique over the other, driver developers will optimise more and make the difference bigger. After a while, an app using A will run considerably faster on a Mac, while an app using B will run considerably faster on Linux. If you then port the Linux app to MacOS X, it will make you believe that the Linux drivers are faster.
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W.T.F. does 'GIMP' have to do with physically challenged (I think you are too timid to write 'disabled') people?
I suspect you of choosing to interpret what was written in way that enables you to choose to take offense, where non was offered.
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Then why does it always seem to be the weakest-minded people who are the ones complaining about "political correctness"?
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well there's this guy [rushlimbaugh.com]
and then there's these guys [dailymail.co.uk]
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There isn't OpenCL for Intel chip Mac either. I haven't tried it, but am told that the Windows OpenCL stuff is dog slow on the Intel 4000. Perhaps it isn't worth bothering with?
Wrong. There most certainly is OpenCL for Intel chip Macs. You may be talking about the Intel Shared Memory HD4000 portion of Intel's architecture. That's all on Intel.
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Indeed, the hardware specs are really weird. It seems even that the two Ubuntu set-ups were done using different CPU speeds (2.5GHz vs 2.9GHz).
So, I wonder if it was the same hardware, and was reported differently, or it was really 3 different mac minis...