| --- Log opened Thu Aug 02 00:00:18 2012 |
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| 04:02 | < Rhamphoryncus> | Oww. Explaining floating point to people is hard |
| 04:02 | <~Vornicus> | Slightly. |
| 04:03 | < Rhamphoryncus> | Trying to help someone who's using numpy and Decimal.. but it turns out their real issue is the floats(!) aren't comparing equal even though they look equal |
| 04:09 | < Rhamphoryncus> | So their googling came up with some bizarre thing involving Decimal |
| 04:22 | | Derakon[AFK] is now known as Derakon |
| 04:44 | < Rhamphoryncus> | Hum. Probably give my planet a diameter of 2**31 and center it at 2**30 (unsigned int) |
| 04:44 | < Rhamphoryncus> | Gives me lots of room for aircraft and to hell with space objects that are outside that ;) |
| 04:46 | < Rhamphoryncus> | oh, center is at 2**31, not 30 |
| 05:08 | | * Derakon whips up a script to plot some code stats. http://derakon.dyndns.org/~chriswei/games/pyrel/locplot.png |
| 05:15 | < Rhamphoryncus> | hmm, what's the ratio of lines to comments? |
| 05:15 | <&Derakon> | I was just generating a plot of percentage of lines that are comments. |
| 05:15 | | iospace is now known as iospacedout |
| 05:16 | <&Derakon> | Unfortunately my methodology is somewhat slow, consisting of reverting the entire codebase to the state it was in after each commit just so I can get the file stats. |
| 05:19 | <&Derakon> | There, http://derakon.dyndns.org/~chriswei/games/pyrel/locplot2.png |
| 05:19 | <&Derakon> | Well, the Y axis should be multiplied by 100. |
| 05:20 | < Rhamphoryncus> | huh |
| 05:20 | < Rhamphoryncus> | That doesn't look right |
| 05:20 | < Rhamphoryncus> | Oh bottom is 0.16 |
| 05:21 | <&Derakon> | Yeah, sorry, that's pylab being silly. |
| 05:22 | < Rhamphoryncus> | It looks like your comment percentage is levelling off |
| 05:23 | <&Derakon> | Entirely possible. |
| 05:23 | <&Derakon> | Comment percentage tends to be low in the initial stages of major development work, and then get filled in more later as I clean it up. |
| 05:23 | | * Rhamphoryncus nods |
| 05:24 | <&Derakon> | The initially high whitespace percentage was due to me creating a lot of stub functions and classes, I suspect. That leveled off quickly. |
| 05:24 | | * Rhamphoryncus nods |
| 05:25 | <&Derakon> | Showertime. |
| 05:25 | | Derakon is now known as Derakon[AFK] |
| 05:33 | < Rhamphoryncus> | hmm. So opengl es 2's GLSL doesn't have a 32 bit int type. You can put a *normalized* 32 bit int in a vertex buffer, but that'll come out as a float |
| 05:34 | < Rhamphoryncus> | Haven't yet figured out how fixed point plays into that |
| 05:47 | | Derakon[AFK] is now known as Derakon |
| 05:55 | | * Rhamphoryncus is still pondering |
| 06:05 | | * Rhamphoryncus takes a break from his ponderings to swear at C++ for how much it sucks |
| 06:07 | < Rhamphoryncus> | I have a Vector3 type, which is 3 floats with various methods. I also have a HexVertex type, which is a POD of a basic 3 float array; it must be POD to interact sanely with opengl |
| 06:07 | <~Vornicus> | POD? |
| 06:08 | < Rhamphoryncus> | There's no way to assign from one to another. I can't add methods to a POD (plain-old-data, aka a C type) without violating the POD rules and making it non-POD. I don't want to add a method to Vertex3 because it has no knowledge of opengl |
| 06:08 | <~Vornicus> | Wait, wait |
| 06:09 | <~Vornicus> | it seems to me there's something I'm missing. |
| 06:09 | <~Vornicus> | I thought that, if a class didn't have any virtual methods, then it didn't get a vtable and it's just POD |
| 06:09 | < Rhamphoryncus> | afaik it's no methods *at all* |
| 06:10 | < Rhamphoryncus> | Although it'd be nice to be proven wrong |
| 06:34 | < Rhamphoryncus> | hrm I feel like terrain is more immediately relevant. To do that I need to figure out texture storage |
| 06:35 | < Rhamphoryncus> | Well, not real texture. For now I'm happy to do this entirely on the CPU |
| 06:39 | | Derakon is now known as Derakon[AFK] |
| 06:42 | < Rhamphoryncus> | When rendering a tile it'll want to look at what's adjacent. That doesn't in of itself require an index though |
| 06:45 | < Rhamphoryncus> | Maybe what I could do is designate them in terms of rings around a pentagon, allowing them to overlap and have redundant forms, but also make the pentagon with the lowest id the canonical form |
| 06:45 | < Rhamphoryncus> | It's a bodge, but if you're trying to split 3 things into 2 boxes you have to pick one box to get the extra |
| 06:47 | < Rhamphoryncus> | Rather, the closest is canonical, with the lowest id only being used for ties |
| 06:50 | < Rhamphoryncus> | Another option would be north pole, south pole, and equator. Just 3 regions |
| 06:52 | < Rhamphoryncus> | Only one tile of overlap with 3 regions though |
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| 08:35 | < ShellNinja> | http://gizmodo.com/5926598/the-amazing-contents-of-steve-wozniaks-travel-backpac k |
| 08:48 | < Rhamphoryncus> | The problem with a grid on a sphere isn't in finding a method that works. It's that you have to use 6 different methods, all at once, for different aspects of it |
| 08:50 | < Rhamphoryncus> | Currently pondering a storage layout that's like a flattened icosahedron (with some tweaking at the boundaries between faces, as my hexagons are right on the boundaries |
| 09:15 | < Rhamphoryncus> | Brain hurt. Math bad. |
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| 12:41 | < froztbyte> | http://www.sec-1.com/blog/?p=279 --- el. oh. el. |
| 13:06 | <@TheWatcher> | huh |
| 13:07 | <@TheWatcher> | I'd never even heard of couchdb >.> |
| 13:19 | | iospace is now known as io\gone |
| 13:36 | < froztbyte> | it was one of the earlier NoSQL things |
| 13:37 | < froztbyte> | Tokyo Cabinet more or less replaced it |
| 13:37 | < froztbyte> | in most things I know of, anyway |
| 13:42 | <@TheWatcher> | Oh, hey, my LOG ALL THE THINGS system works, and I didn't even realise I had turned it on. |
| 14:04 | < froztbyte> | haha |
| 14:04 | < froztbyte> | nice |
| 14:08 | <&jerith> | Look at Riak if you want that kind of thing. |
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| --- Log closed Thu Aug 02 14:53:27 2012 |
| --- Log opened Thu Aug 02 14:54:08 2012 |
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| 19:54 | | * iospace eyes I2C |
| 20:18 | < RichyB> | http://www.foragoodstrftime.com/ |
| 20:18 | < RichyB> | Genius URL, good tool. |
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| 20:59 | <&McMartin> | For a good strftime(), call? |
| 20:59 | <&McMartin> | GHOSTBUSTERS |
| 21:19 | <&McMartin> | Ha ha |
| 21:20 | <&McMartin> | So, kernel exploit via binary nvidia driver found |
| 21:20 | <&McMartin> | Gentoo response "Even without this, unprivileged users can physically set the machine on fire, so this doesn't change our policies we already had." |
| 21:20 | <&McMartin> | http://thread.gmane.org/gmane.comp.security.oss.general/8083 |
| 22:00 | < RichyB> | Hasn't this been kind of known for ages though? |
| 22:01 | < RichyB> | Not the specific vulnerability, I mean, but the fact that closed-source GPU drivers are buggy and that letting a stranger run accelerated 3D code on your box is almost as good as giving them permission to insert a kernel module. |
| 22:04 | <&McMartin> | One would assume so |
| 22:04 | <&McMartin> | Though of course, this is also a primary purpose of many computers. |
| 22:05 | < RichyB> | Well... videogamers already let every fool programmer on the planet insert kernel modules for their DRM. |
| 22:06 | <&McMartin> | Or their graphics and sound drivers. |
| 22:12 | <&McMartin> | Also, I misread the line about setting the machine on fire at first |
| 22:12 | <&McMartin> | "If the user has console access, they can set the machine on fire" |
| 22:12 | <&McMartin> | "First,t hey take a blowtorch..." |
| 22:12 | < RichyB> | Nah, it's "if the user has access to nvidiactl then they can turn the fans off and set it on fire" |
| 22:14 | <&McMartin> | Yeah, I did eventually get it |
| 22:15 | < RichyB> | Sorry. |
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| 22:43 | <&McMartin> | Osmium liiiiiives |
| 22:47 | < iospace> | O_O |
| 22:47 | < iospace> | what does? |
| 22:47 | <&McMartin> | My new Ubuntu laptop. |
| 22:52 | < iospace> | ah |
| 22:52 | < iospace> | ^_^ |
| 22:54 | <&McMartin> | This laptop has more RAM than any single other machine I own. |
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| 23:13 | | * iospace eyes ToxicFrog |
| 23:15 | < Number3> | Why you want version? |
| 23:15 | <&McMartin> | SCIENCE |
| 23:27 | <&ToxicFrog> | Quite. |
| 23:27 | <&ToxicFrog> | Wanted a count of OSX users and which clients they were using. |
| 23:32 | | Number3 is now known as ShellNinja |
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| 23:50 | | * McMartin mutters |
| 23:50 | <&McMartin> | Clojure 1.4 isn't in the Ubuntu repos. |
| --- Log closed Fri Aug 03 00:00:07 2012 |