X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=irc%2F%23ipdf.log;h=8c9630636a918435dbcf957525749849ebaa909b;hb=d035138397dee6214d127ae4abf81532f5604ad0;hp=f1a939e3844559a6fa109edde1fe55d76b0b28ad;hpb=eeeaaae3227fd4427a78f4ab75e8a4f414b3626d;p=ipdf%2Fdocuments.git

diff --git a/irc/#ipdf.log b/irc/#ipdf.log
index f1a939e..8c96306 100644
--- a/irc/#ipdf.log
+++ b/irc/#ipdf.log
@@ -815,3 +815,143 @@
 15:38 <@matches> You're precision doesn't disappear as fast when you do it that way
 15:38 <@matches> Your
 15:38 <@matches> Whatever
+--- Day changed Thu Apr 24 2014
+14:40 -!- You're now known as notmatches
+14:40 -!- You're now known as matches
+14:41 <@matches> Ok, less spammy channel time
+14:41 -!- mode/#ipdf [+b m:matches!*@*] by matches
+14:41 <@matches> Spam
+14:41 <@matches> Dammit
+14:42 -!- mode/#ipdf [-o matches] by matches
+14:42 < matches> Spam
+14:43 < matches> Yay
+14:43 < matches> ... this will all appear in the next git commit won't it -_-
+14:52 -!- You're now known as notmatches
+14:52 -!- You're now known as matches
+--- Day changed Sat Apr 26 2014
+00:45 -!- mode/#ipdf [+o matches] by OperServ
+00:46 <@matches> Incoming "at least it is self consistent in its wrongness" floating point conversion
+00:48 -!- mode/#ipdf [-o matches] by matches
+00:48 < matches> Still can't talk
+00:48 < matches> Excellent
+--- Day changed Sun Apr 27 2014
+17:10 < sulix> I finally got ipdf working on my laptop again by porting everything to OpenGL 3.1.
+17:10 < sulix> I'm so sorry about how ugly the code now is, by the way.
+18:04 -!- mode/#ipdf [+o matches] by OperServ
+18:04 -!- Pommers [bobgeorge33@motsugo.ucc.gu.uwa.edu.au] has joined #ipdf
+18:05 < Pommers> You know what a really good feature for a PDF reader would be? The ability to have it completely borderless without menus, so you just see the page!
+18:05 -!- Pommers [bobgeorge33@motsugo.ucc.gu.uwa.edu.au] has left #ipdf []
+18:06 <@matches> Wat
+18:06 <@matches> Well we've got that
+18:06 <@matches> We just can't read pdfs
+18:07 <@matches> Did you get much done not going to the cleanup?
+18:07 <@matches> I managed to transfer some dust from one location to another location, and then the wind blew it back in my face
+18:08 <@matches> Then I looked at Frames' proposal and despaired at how much it is actually complete and has words in it
+18:08 <@matches> I think he's onto something with his plan of actually writing things
+18:14 -!- matches changed the topic of #ipdf to: ipdf the pdf doesn't stand for pdf
+18:14 -!- matches changed the topic of #ipdf to: ipdf the pdf doesn't stand for pdf but the df stands for df
+18:14 -!- matches changed the topic of #ipdf to: Sort of
+18:15 <@matches> I need a script to auto mute me...
+18:15 < sulix> I spent basically all of today on that one commit.
+18:15 -!- mode/#ipdf [-o matches] by matches
+18:15 -!- mode/#ipdf [+o matches] by OperServ
+18:15 < sulix> Whether or not that was more useful than the cleanup remains to be seen.
+18:16 <@matches> I should look at it I guess :P
+18:16 < sulix> It compiles*
+18:16 < sulix> *but has lots of warnings.
+18:16 <@matches> It can't be worse than my tester that converts floats to floats
+18:17 < sulix> I'm pretty certain it can be and is worse.
+18:17 <@matches> However I've realised I kind of actually do need to be able to do that
+18:17 <@matches> Woah 3k+ lines
+18:17 <@matches> * 4k+ lines
+18:18 < sulix> Most of it was autogenerated, but still...
+18:18  * matches weeps for OpenGL 1
+18:18 < sulix> You don't realise how much you miss it until it's gone...
+18:19 <@matches> So what does all this stuff actually do
+18:19 <@matches> Because I could see rectangles and things just fine without it
+18:19 < sulix> Exactly the same thing as before but it works on my laptop now.
+18:19 <@matches> I see a shader program, that's obviously good
+18:20 <@matches> Actually I see code for a shader but no shader yet
+18:20 < sulix> The shaders are all #defines, I'm afraid.
+18:22 <@matches> What was wrong with your laptop?
+18:23 < sulix> It doesn't support the OpenGL compatibility mode, so --- as I was using the OpenGL 3.1 feature of "primitive restart", I had to code the entire thing in OpenGL 3.1
+18:23 < sulix> On the bright side, this paves the way for doing things like getting the GPU to use doubles.
+18:26 <@matches> Ooh
+18:27 < sulix> (also halves)
+18:27 < sulix> (halfs?)
+18:27 <@matches> Do GPUs use IEEE floats? I had a reference that seemed to be complaining they didn't
+18:27 <@matches> Although it was circa 2007
+18:28 < sulix> I don't think that there's a requirement that they internally use them, but they do read and write them.
+18:28 < sulix> A bit like how x86 processors use(d) 80 bit reals internally and rounded when reading/writing to memory.
+18:28 <@matches> Do halves have a different mantissa encoding
+18:29 <@matches> The examples given on wikipedia seem wrong
+18:30 < sulix> I think this is the canonical description: http://www.opengl.org/registry/specs/NV/half_float.txt
+18:33 <@matches> That would be before IEEE specified half (binary16) but its the same summation for the mantissa anyway
+18:33 <@matches> binary16 is (briefly) in the 2008 revised 754
+18:34 <@matches> So I think wikipedia is giving a wrong example, but I'm not confident enough to go and change wikipedia
+18:35 <@matches> Also I just realised my conversion of the mantissa to a Real is horrible
+18:35 <@matches> Oh well, it can get fixed later
+18:36 <@matches> Hopefully I can finish my fluid mechanics assignment quick enough to actually work on my progress report / proposal / thing
+18:36 <@matches> (Hah)
+18:36 -!- mode/#ipdf [-o matches] by matches
+18:37 < sulix> Yeah, I'm going to see how much Lit review I can write for tomorrow. :/
+--- Day changed Mon Apr 28 2014
+22:06 -!- mode/#ipdf [+o matches] by OperServ
+22:10 <@matches> Must find motivation to work on Lit Review at 10pm...
+--- Day changed Tue Apr 29 2014
+10:06 <@matches> Must find motivation to work on Lit Review at 10am...
+--- Day changed Wed Apr 30 2014
+13:04 <@matches> I wanted to rasterise a vector image so I could compare them at the same scale ("These look the same!") and zoomed ("This one looks crappier!)
+13:04 <@matches> But because vector graphics editor/viewers don't use pixels as units but they do when they export to a bitmap, it's difficult to actually get them to look the same
+13:04 <@matches> Before scaling
+13:05 <@matches> I guess a screenshot tool might be the best way
+13:06 <@matches> I don't know if I need to do this really
+13:07 <@matches> I guess Mechanical and Chemical engineers marking this will probably benefit from having an example
+13:07 <@matches> Doesn't everyone know the difference between vector and raster graphics
+13:07 <@matches> Where was that paper that had tux vector and rasterised
+13:10 <@matches> Ah, worth2003xr.pdf
+13:11 <@matches> If it's in a paper I guess it can go in a Lit Review
+13:11 <@matches> At least until I have something better
+13:15 <@matches> Kind of ironic that the image I am using was actually scanned first as a bitmap and then converted to vector using Trace Bitmap
+13:57 <@matches> Ah, it's actually impossible to get it to be exactly the same, because even taking a screenshot on my own screen it will then be different depending on the display of whoever reads the digital pdf
+13:57 <@matches> Oh well
+13:58 <@matches> I suppose "It looks shittier" will have to suffice without trying to make them look exactly the same before scaling
+13:59 <@matches> I have spent WAY too long making this example
+13:59 <@matches> I could have just gone "See \cite{worth2003xr.pdf}"
+16:00 <@matches> So it might be worth talking about dpi in pdf viewers and how it SUCKS
+20:17 -!- mode/#ipdf [-o matches] by matches
+21:14 -!- mode/#ipdf [+o matches] by OperServ
+21:46 <@matches> I have perpetrated XML on the codebase
+21:47 <@matches> I have grand visions of our code supporting SVGs
+21:47 <@matches> I also have grand visions of actually doing a Literature Review
+21:50  * sulix git pull's with some trepidation.
+21:52 < sulix> Never heard of pugixml before but it looks okay.
+21:55 <@matches> The W3C XML specification is pretty terrifying
+21:56 <@matches> I will feel more like I've satisfied the "Document Formats" part of the Literature Review if I say some things about it
+21:57 <@matches> Well SVG in particular
+21:57 <@matches> SVG defines a "minimum" precision of IEEE binary32 
+21:58 <@matches> But there's a specification for "High Quality" viewers that have to use binary64
+21:58 <@matches> That's probably the only real thing relevant directly to our problem
+--- Day changed Thu May 01 2014
+01:23 <@matches> It's May 1st
+01:23 <@matches> This means we can no longer say "The Literature Review is due Next Month"
+01:23 <@matches> IT'S DUE THIS MONTH
+01:23  * matches freaks out
+01:23 <@matches> ... but after sleep
+01:25 <@matches> Page 12 of my Literature Review by the way
+01:25 <@matches> Is the only page I like
+16:34 <@matches> The C version of paranoia compiled for me
+16:34 <@matches> Not terribly exciting (I have an IEEE 754 compatible processor! Amazing)
+22:17 <@matches> W Kahan's website is a very interesting if slightly difficult read
+22:24 <@matches> He appears to have written this 80 page pdf in a day
+22:27 <@matches> It kind of reads like one of those religious propaganda pamphlets
+22:27 <@matches> "Java is the Work of Satan"
+22:27 <@matches> "Kernighan-Ritcie C floating-point semantics are the light"
+22:28 <@matches> But every so often he has a graph or example that makes him seem less crazy
+22:34 <@matches> "And now Java forbits you to mention or use extra-precise long double arithmetic, though IEEE Standard 754 recommends its use and over 95% of computers on desktops have it built into their hardware. You paid for it, but Java denies you its benefits."
+22:34 <@matches> Java has long double now right?
+22:34 <@matches> Although that JOP I was looking at was just 32 bit
+22:36 <@matches> Ah, java.lang.math.BigDecimal
+22:37 <@matches> "But be careful with division, because it will throw exceptions if it's like 1/3, then it will be Non-terminating decimal expansion."
+22:37 <@matches> That sounds horrifying
+22:40 -!- mode/#ipdf [-o matches] by matches