| --- Log opened Tue Dec 09 00:00:44 2008 |
| --- Day changed Tue Dec 09 2008 |
| 00:00 | | AnnoDomini [~farkoff@Nightstar-29056.neoplus.adsl.tpnet.pl] has quit [Quit: ACHTUNG! ALLES LOOKENSPEEPERS! Das Internet is nicht fuer gefingerclicken und giffengrabben. Ist easy droppenpacket der routers und overloaden der backbone mit der spammen und der me-tooen. Ist nicht fuer gewerken bei das dumpkopfen. Das mausklicken sichtseeren keepen das bandwit-spewin hans in das pockets muss; relaxen und watchen das cursorblinken.] |
| 00:01 | <@ToxicFrog> | Vornicus: per-surface alpha: the entire surface has a transparency value. When blitted, this value is used. |
| 00:02 | <@ToxicFrog> | I thought GIFs had per-pixel alpha? |
| 00:02 | < Vornicus> | point, they do - but only on/off, via an alpha entry in their color table. |
| 00:03 | < Vornicus> | But in that case: per-surface alpha is almost /never/ what you went. |
| 00:05 | < Vornicus> | And it would confuse the everloving hell out of pretty much anybody. |
| 00:08 | <@gnolam> | ToxicFrog: Per-pixel. Definitely. |
| 00:13 | <@ToxicFrog> | Alright then. |
| 00:13 | <@ToxicFrog> | (the main reason I ask is that they are each good for different things.) |
| 00:14 | | NSGuest-34 [~nick@Nightstar-12626.tampfl.fios.verizon.net] has quit [Ping Timeout] |
| 00:14 | <@ToxicFrog> | (PPA is good for antialiased, non-square images, ie most sprites. PSA is good for fade-ins and the like) |
| 00:17 | <@McMartin> | (PPA is strictly more powerful. PSA can be done with it, and trivially so in SDL.) |
| 00:17 | <@McMartin> | (Says the man who finally solved the fucking crossfade code in UQM) |
| 00:18 | <@ToxicFrog> | How do you trivially do PSA using PPA? |
| 00:19 | <@ToxicFrog> | I can't seem to find an SDL function for it, so I'm left with "iterate over all the pixels in the surface adjusing the alpha byte in each one" |
| 00:19 | <@McMartin> | There's a "blit at this alpha" function, I blieve. |
| 00:20 | <@McMartin> | There's a way to force a surface's alpha channel. |
| 00:20 | <@ToxicFrog> | There's SetAlpha, but that's for PSA |
| 00:20 | <@ToxicFrog> | And there's BlitSurface, but if the surface format has PPA it ignores PSA if any |
| 00:21 | <@McMartin> | Right. |
| 00:21 | <@McMartin> | Make a new surface. Blit your PPA to it. SetAlpha on it. Blit it. Destroy it. |
| 00:22 | <@ToxicFrog> | Aah. A new surface without an alpha channel, you mean. |
| 00:23 | <@McMartin> | yeah. |
| 00:23 | <@ToxicFrog> | Gah. This is such a headache. |
| 00:23 | <@McMartin> | The conversion then happens inside SDL at the blit level. |
| 00:24 | | * ToxicFrog heads home |
| 00:26 | | gnolam [lenin@79.136.60.ns-4387] has quit [Quit: Z?] |
| 00:40 | < Vornicus> | TF, didn't you make a postscript irc thingy? |
| 00:45 | | Vornicus changed the topic of #Code to: FORTH LOVE IF HONK THEN | Have a pastebin! http://paste.ubuntu.com | Channel mode +U, ask for voice to post links. | Monologues permitted. | See #projecteuler for discussions about http://projecteuler.net |
| 00:47 | | Derakon[AFK] is now known as Derakon |
| 00:48 | <@McMartin> | Ah, Forth. |
| 00:49 | <@McMartin> | Don't make me relink var'aq. |
| 01:03 | <@ToxicFrog> | Vornicus: yes. |
| 01:03 | <@ToxicFrog> | Why? |
| 01:04 | < Vornicus> | I was talking about postscript in #python and mentioned your irc thingy because they were wondering if anyone had made tcp/ip in it. |
| 01:06 | <@ToxicFrog> | Aah. |
| 01:06 | <@ToxicFrog> | #python on freenode? |
| 01:06 | <@ToxicFrog> | I didn't do the networking in postscript, though. |
| 01:06 | <@ToxicFrog> | Postscript was the frontend, I mkfifo'd it to netcat. |
| 01:07 | < Vornicus> | aha |
| 01:08 | < Vornicus> | close enough. |
| 01:08 | <@ToxicFrog> | There was also a bit of awk in there to make it easier for postscript to parse the traffic from the IRC server. |
| 01:09 | <@ToxicFrog> | I didn't feel up to implementing regular expressions in postscript in those days~ |
| 01:09 | < Vornicus> | hee |
| 01:14 | <@ToxicFrog> | Gnar. |
| 01:15 | <@ToxicFrog> | DocBook does exactly what I want, except for the whole "input in XML kill me now" bit. |
| 01:15 | | * ToxicFrog ponders writing a simple indentation-based documentation to DocBook converter |
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| 01:38 | <@McMartin> | TF: I started in HTML and moved down. |
| 01:41 | <@McMartin> | Ah, VM ballooning. |
| 01:41 | <@McMartin> | cat /dev/zero > /loldwm |
| 01:41 | <@Derakon> | DWM? |
| 01:41 | <@McMartin> | It's like doom, but in Welsh. |
| 01:42 | <@Derakon> | Ahh. |
| 01:42 | <@Derakon> | And here I thought you were talking about a window manager. |
| 01:45 | <@ToxicFrog> | McMartin: down to...? |
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| 01:50 | <@McMartin> | TF: DocBook. |
| 01:50 | <@McMartin> | At which point it was basically sed. |
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| 01:56 | <@ToxicFrog> | Aah. |
| 01:56 | <@ToxicFrog> | I've finally found what I was looking for (vaguely remembered from ages ago): docutils' reStructuredText input mode. |
| 01:57 | <@ToxicFrog> | Also, I've figured out what my problem is with reconciling Haskell and Lua: I'm trying to have both inferred static typing and structural dynamic typing at the same time. |
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| 03:18 | <@McMartin> | Dare I ask what you're doing that requires reconciling Haskell and Lua? |
| 03:18 | <@ToxicFrog> | Oh, nothing at all. |
| 03:18 | <@ToxicFrog> | I just sometimes thing "man, it would be totally sweet to have Haskell's type system in Lua, or, indeed, in everything" |
| 03:19 | <@ToxicFrog> | Because I love Haskell's type system to bits. |
| 03:19 | <@ToxicFrog> | Then I start actually thinking about the implications and the wheels come off. |
| 03:21 | <@ToxicFrog> | Among other things, once you deploy an __index or __newindex metamethod you can't statically guarantee anything about non-local variables, and for the purposes of this statement "local foo" is local but "foo.bar" is not. |
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| 06:17 | <@Derakon> | http://rogeralsing.com/2008/12/07/genetic-programming-evolution-of-mona-lisa/ |
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| --- Log closed Wed Dec 10 00:00:59 2008 |