| --- Log opened Tue Nov 16 00:00:44 2010 |
| 00:04 | | Derakon[irssi] [chriswei@Nightstar-cfae48c3.ca.comcast.net] has left #code [] |
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| --- Log closed Tue Nov 16 04:15:40 2010 |
| --- Log opened Tue Nov 16 04:15:53 2010 |
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| 08:49 | < simon_> | don't *s add expressive power to regular expressions? |
| 08:50 | < simon_> | I mean, with just alternation, you can only describe a fixed number of repetitions. |
| 09:04 | | You're now known as TheWatcher |
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| 10:30 | | * TheWatcher refactors the crap out of this function, reduces the argument list from 11 to 5 arguments without sacrificing coupling |
| 11:05 | < simon_> | a function with 11 arguments? |
| 11:06 | <@TheWatcher> | yeah |
| 11:06 | <@TheWatcher> | Happens sometimes. |
| 11:09 | < simon_> | doesn't it happen whenever those 11 properties aren't stuffed in some container and a reference to the container is passed instead? |
| 11:11 | <@Namegduf> | My least favourite time that happens is when people try to avoid coupling to a global configuration object or similar, so they pass in *every relevant configuration value* when constructing it. |
| 11:12 | < simon_> | hehe |
| 11:12 | <@Namegduf> | Do that for a few levels down and suddenly adding a new feature which requires knowledge of something else requires significant code churl, yay OO "future proofing" and "reuse". |
| 11:13 | <@TheWatcher> | Yeah, indeed. |
| 11:14 | | * Namegduf had to refactor that out of one project. |
| 11:14 | <@Namegduf> | It made the fork basically incompatible with the original project, but was easily worth it. |
| 11:20 | | Stalker [Z@3A600C.A966FF.5BF32D.8E7ABA] has joined #code |
| 11:29 | | * TheWatcher eyes this |
| 11:30 | <@TheWatcher> | So, I just moved a chunk of regexp-heavy functions to a different place in my code to make things more readable. Git commit message? "[master e17106d] Moved tag conversion code around the file\n 1 files changed, 666 insertions(+), 666 deletions(-)" |
| 11:31 | <@TheWatcher> | Yep, that's obviously lots of regexps~ |
| 11:33 | < simon_> | regexes are the work of the devil! |
| 11:44 | < gnolam> | I am reminded of http://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-se lf-contained-tags/1732454#1732454 |
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| 11:50 | <@Namegduf> | That is awesome. |
| 11:50 | <@TheWatcher> | Y'know, xhtml really should have a <cthulhu> element... |
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| 14:28 | < Tarinaky> | Yay I finally got an academic reference from my former pt. |
| 14:29 | < Tarinaky> | Boo it's a terrible reference that lambasts me at every corner. |
| 14:29 | | * Tarinaky sighs -.- |
| 14:29 | <@Namegduf> | Really? |
| 14:29 | <@Namegduf> | That sucks. |
| 14:30 | < Tarinaky> | Anyone have a CS department they can squeeze me in no questions asked? >.< |
| 14:30 | <@ToxicFrog> | "pt"? |
| 14:31 | < Tarinaky> | My tutor. |
| 14:33 | < Anno[Laptop]> | You could try immigrating to Poland. Dunno about no-questions-asked, but public Unis are free of charge in Poland. |
| 14:37 | <@Namegduf> | My PT is my only reference, which means its probably a bad thing that last time I talked to them was about 14 months ago, and we only talked once. C'est la vie. |
| 14:38 | <@Namegduf> | PTs are a dumb concept anyway, for any possible issue there's a better person to talk to. |
| 14:38 | <@Namegduf> | Here, anyway. |
| 14:44 | < Tarinaky> | Well, he basically accused me of being either lazy or stupid. |
| 14:44 | < Tarinaky> | :/ |
| 14:45 | < Tarinaky> | Which was something I could have done without. |
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| 18:14 | | * Derakon starts performance testing on his prerendered mosaic system. |
| 18:15 | <@Derakon> | Initial results are promising; with prerendering is vastly more responsive than without. |
| 18:15 | <@Derakon> | However, the prerendering system bogs down after adding a few hundred more textures. |
| 18:17 | <@Derakon> | Hmm...maybe my laptop just doesn't like having to allocate 900x 512x512 textures? |
| 18:18 | < gnolam> | Well, that is 700 MB worth of textures. Assuming RGB, 8 bits per channel. |
| 18:19 | <@Derakon> | The data happens to be greyscale, though I don't know that I told my graphics card that. |
| 18:20 | < gnolam> | Upload it as GL_LUMINANCE values then. |
| 18:20 | | * Derakon eyes Google, wonders why searching for "opengl delete texture" doesn't return the documentation for glDeleteTextures right off. |
| 18:20 | < gnolam> | However, IIRC that doesn't guarantee that the graphics card will actually store it in that format. |
| 18:20 | < gnolam> | It might well convert it to RGB or RGBA anyway. |
| 18:21 | <@Derakon> | Oh yeah, I'm using Luminance. |
| 18:21 | <@Derakon> | Forgot about that. |
| 18:21 | <@Derakon> | (It's been a couple weeks since I worked on this program) |
| 18:22 | <@Derakon> | Hmm...even deleting textures after I prerender them, it still bogs down, though it does take longer. |
| 18:24 | <@Derakon> | Ahh, I think that's just due to the tiles I couldn't prerender since they didn't fit neatly onto one of the prerendered tiles. Guess I should add some overlap there. |
| 18:40 | <@ToxicFrog> | FUCK |
| 18:40 | <@ToxicFrog> | JAVA |
| 18:41 | <@Derakon> | Had to write System.out.println one too many times~? |
| 18:42 | < gnolam> | Perhaps he just really hates Indonesians? |
| 18:42 | <@ToxicFrog> | Derakon: I'm modifying an existing Java program. |
| 18:43 | <@ToxicFrog> | Just for fun, I've been supplementing the existing code with Scala equivalents in comments. |
| 18:43 | <@Derakon> | Heh. |
| 18:43 | <@ToxicFrog> | If the pattern so far holds, a Scala rewrite would be 1/5th the size, more readable, and much faster. |
| 18:44 | <@ToxicFrog> | Although that last has more to do with the braindead design of candidate sets in the original program that it does with Java proper. |
| 18:47 | <@ToxicFrog> | It's just a fucking miserable language to work in and I hate every second that I spend in it. |
| 18:48 | <@Namegduf> | Agree. |
| 18:50 | <@TheWatcher> | So very true. |
| 18:51 | | * Derakon mutters at bc |
| 18:51 | <@Derakon> | You catch ^C just to print out "(interrupt) use quit to exit." |
| 18:51 | <@Derakon> | Why not actually quit if you aren't in the middle of a calculation? |
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| 20:25 | | * Derakon mutters at his program, tries to figure out why drawing a perfectly transparent texture is creating a black background. |
| 20:25 | <@Derakon> | (That is, my clear color is white; if I draw a texture that was created with GL_ALPHA and nothing but zeros, then it shows as black on the white) |
| 20:26 | <@Derakon> | ("Nothing but zeros" meaning that the data passed to glTexImage2D was all zeros) |
| 20:31 | <@TheWatcher> | What's your blending function set to? |
| 20:32 | <@Derakon> | I'm not calling glBlendFunc anywhere... |
| 20:32 | <@Derakon> | Maybe that's my problem~ |
| 20:33 | <@TheWatcher> | (Remember that you need to turn it on with a glEnable(GL_BLEND) too.) |
| 20:34 | <@Derakon> | ...now the non-opaque parts of my textures aren't showing... |
| 20:34 | | * Vornicus goestowork. |
| 20:34 | <@Derakon> | Argh, this whole system is so undiscoverable. |
| 20:35 | <@Derakon> | Why does drawing have to be so complicated? :( |
| 20:50 | <@ToxicFrog> | Derakon: presumably so that if you're working over a slow link and end up hammering ^C several times you don't quite by accident. |
| 20:51 | <@ToxicFrog> | In general I have more complaints about interactive programs accepting ^C as quit rather than just interrupting the current action. |
| 20:52 | <@Derakon> | Ehh, if you hammer ^C multiple times you deserve what you get for not understanding input buffers~ |
| 21:24 | <@Derakon> | Blargh, every time I work with OpenGL I seem to get roadblocked very easily. |
| 21:24 | <@Derakon> | Witness it being 50 minutes later and I still haven't figured out how to get these partially-transparent textures to draw properly. |
| 21:31 | <@Derakon> | Hm, actually, maybe this *is* working and it's my test case that's flawed. |
| 21:40 | <@Derakon> | Hm, or perhaps it would be better to not have the prerendered tiles overlap (since it makes the math ugly) and instead simply render overlapping tiles to all affected prerendered tiles. |
| 21:51 | < gnolam> | > now the non-opaque parts of my textures aren't showing |
| 21:51 | < gnolam> | Isn't that sort of the point? :) |
| 21:52 | <@Derakon> | What I meant at the time was that I had a white screen. So, s/non-// |
| 21:52 | <@Derakon> | But I got that sorted out and determined that my entire approach was flawed. |
| 22:00 | <@Derakon> | Okay, that distributes the overlap across prerendered tiles, but now there's a small border of unrendered area visible in-between. |
| 22:01 | <@Derakon> | ...no wait, that's not what's going wrong. WTF... |
| 22:04 | < gnolam> | Run into clamping issues yet BTW? Those are going to be fun. :) |
| 22:04 | <@Derakon> | Alpha's off the table now; I'm not dealing with it. |
| 22:05 | <@Derakon> | Now I have this: http://derakon.dyndns.org/~chriswei/temp2/mosaic.png |
| 22:05 | <@Derakon> | This entire image is split up into a 3x3 grid of macro tiles, each of which has a selection of the smaller tiles (grey rectangles) prerendered to them. |
| 22:05 | <@Derakon> | You can see lines on the smaller tiles where the 3x3 grid is. |
| 22:05 | <@Derakon> | Why are there lines? |
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| 22:06 | <@Derakon> | Particularly, why are there lines where there's no smaller tiles anywhere in the area? |
| 22:06 | <@Derakon> | It looks like pixels are getting mapped across the macro tiles somehow...? |
| 22:30 | <@Derakon> | Ah ha, fixed. |
| 22:30 | <@Derakon> | Had to set GL_TEXTURE_WRAP_[S|T] to GL_CLAMP |
| 22:35 | <@Derakon> | So at this point, the only limitation on how many tiles I can have is that I do still need to keep the tiles in memory in case the user zooms in. :) |
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| 22:58 | < gnolam> | Apparently I'm psychic then. ;) |
| 22:58 | < gnolam> | <gnolam> Run into clamping issues yet BTW? Those are going to be fun. :) |
| 22:58 | <@Derakon> | I assumed you were talking about alpha blending running out of room to work in. |
| 22:59 | < gnolam> | Also, you're still probably going to be able to discern edges between tiles, due to how the clamping and linear filtering works. |
| 22:59 | <@Derakon> | As long as they're subtle I'm not too bothered. |
| 22:59 | < gnolam> | Good. Because fixing that is fun. The Dwarf Fortress kind of fun. |
| 22:59 | <@Derakon> | Especially since in reality, there shouldn't be noticeable borders between overlapping tiles *anyway* since they're imaging the same things. |
| 22:59 | <@Derakon> | Heh, righto. |
| 23:00 | < gnolam> | Ah, but you still get seams, where the min/mag filter should really be sampling from a neighboring tile instead of the clamped edge. |
| 23:01 | <@Derakon> | Eh. I'm not gonna fuss about it for now. We'll see how bad it is in practice, but I suspect it won't be a huge issue. |
| 23:01 | < gnolam> | But I think you can live with those. :) |
| 23:04 | < gnolam> | (Fixing that basically only has one solution, and that is to modify each tile with a one-pixel border matching that of its neighbors edges. And then drawing from 1 to Width-1,1 to Height-1 instead of 0 to Width,0 to Height.) |
| 23:04 | < gnolam> | (It's a pain in the arse.) |
| 23:04 | <@Derakon> | Of course, that requires you to determine which tiles are nearby. No thanks. |
| 23:05 | <@Derakon> | Especially since, despite my calling these "tiles", there's no requirement that they occur only at fixed intervals. |
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| --- Log closed Wed Nov 17 00:00:45 2010 |