Hacker News: zokier

New comment by zokier in "Executable Is a SQLite Database"

zokier — Mon, 24 Aug 2026 14:20:00 +0000

tbh execve should be userspace operation instead of syscall, idk why kernel needs to care about the executable format at all

New comment by zokier in "High-Res Photo Shows Sand-Capped Butte Rising from Mars Plain of Polygons"

zokier — Wed, 12 Aug 2026 18:45:32 +0000

My recommendation is that do not bother to try thinking too hard about Mars image colors, it's deep and ultimately unsatisfactory rabbithole, just enjoy the pictures as they are.

Here is another rendering of the same raw data: https://www.flickr.com/photos/nev-t/55357706514/

It is no less or more non-adjusted, all digital colors are interpretations of some sort. Of course you can also download the raws from NASA/JPL and process them yourself. But then you have to make the decisions on how to render the colors.

areo.info has some information about their own image processing pipeline for M2020/Perseverance images (the successor mission of MSL/Curiosity), with good links: https://areo.info/mars20/

Lot of that information should be applicable to Curiosity too. But on the other hand I personally think many of their renderings look pretty weird so take the info with a grain of salt?

New comment by zokier in "Future euro banknote design proposals"

zokier — Sat, 25 Jul 2026 00:09:31 +0000

They could have done the same thing they did with the coins and make every country put their own faces in there.

New comment by zokier in "Future euro banknote design proposals"

zokier — Fri, 24 Jul 2026 23:58:23 +0000

A) Front is nice, but I can't get over the shadow people in the backside

B) The most boring of the options. The tiny text with the bird facts should not be there.

C) Corporate hellscape.

D) wtf are those hands doing here

E) Again fronts look better than backs; fronts are very traditional bank-note to me.

F) Most interesting option. Certainly feels different than any other bank note I recall.

G) Ugh random vector shapes and gradients. Ugly in same ways as C)

H) Very inoffensive, very boring. Competing with B) in the most boring category.

I) Bit too much going on. The river map thing on the back side should be distinct in each note

J) The visual "sketchy" style just doesn't feel right here.

Ultimately F is visually my favourite although like many others I do dislike the "famous people" theme. Design I could be very nice with some tweaks

New comment by zokier in "Learn OpenGL, extensive tutorial resource for learning Modern OpenGL"

zokier — Thu, 23 Jul 2026 20:08:35 +0000

> executes on all pixels sequentially

or in parallel?

New comment by zokier in "How to pack ternary numbers in 8-bit bytes"

zokier — Tue, 21 Jul 2026 11:23:16 +0000

I think the key insight here is that 243 is 100000 in base3. So dividing by 243 essentially converts any 5 digit base 3 number to [0,1) interval. Multiplying by 256 converts it to [0,256) interval which conveniently fits into a byte.

New comment by zokier in "Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion (2012)"

zokier — Mon, 20 Jul 2026 19:59:07 +0000

In 2026? Path/ray traced global illumination.

New comment by zokier in "Collection of Digital Clock Designs"

zokier — Wed, 15 Jul 2026 22:50:51 +0000

better known as BCD, binary-coded decimal: https://en.wikipedia.org/wiki/Binary-coded_decimal

New comment by zokier in "A martian rock has lots of carbon on it, and it's not clear why"

zokier — Sat, 04 Jul 2026 16:03:45 +0000

There was a plan for Mars Sample Return mission. But it got scrapped by budget cuts/concerns.

https://www.hou.usra.edu/meetings/mepagapril2025/presentatio...

https://en.wikipedia.org/wiki/NASA-ESA_Mars_Sample_Return

New comment by zokier in "Holes"

zokier — Fri, 03 Jul 2026 21:06:42 +0000

conveniently there is a xkcd for that too https://xkcd.com/1330/

New comment by zokier in "Weave Robotics launches Isaac 1, a $7,999 home robot with Fall 2026 deliveries"

zokier — Wed, 01 Jul 2026 21:33:28 +0000

I find it very suspicious that the laundry folding segment of the video has awkward cuts of the interesting parts. Makes me question if it is actually capable of doing that

New comment by zokier in "Box3D, an open source 3D physics engine"

zokier — Wed, 01 Jul 2026 20:49:32 +0000

fyi "Bevy XPBD" got renamed to Avian Physics (it is not xpbd based anymore) https://github.com/avianphysics/avian/issues/346

New comment by zokier in "Study suggests most Americans would be healthier without daylight saving time (2025)"

zokier — Tue, 30 Jun 2026 06:50:34 +0000

> that’s already the case with our existing leap seconds.

Which we are also in the process of getting rid of.

New comment by zokier in "Study suggests most Americans would be healthier without daylight saving time"

zokier — Tue, 30 Jun 2026 06:49:02 +0000

You can still wake up earlier and enjoy your sunrise even if your working hours are fixed.

New comment by zokier in "Study suggests most Americans would be healthier without daylight saving time (2025)"

zokier — Tue, 30 Jun 2026 06:46:02 +0000

You realize that you can change your own sleep patterns seasonally if you want to? Heck, you could do that even gradually instead of those abrupt 1 hour changes. That is your choice, we don't need to fiddle with clocks for the whole society for that.

New comment by zokier in "Thomann takes legal action against Fender"

zokier — Wed, 24 Jun 2026 21:26:21 +0000

xlr?

New comment by zokier in "Optocam Zero: a Pi Zero based digital camera made using off the shelf components"

zokier — Tue, 23 Jun 2026 12:08:23 +0000

The problem is RPi though, and all the junk it runs before booting Linux.

New comment by zokier in "What every coder should know about Gamma Correction"

zokier — Mon, 15 Jun 2026 20:52:06 +0000

for lot of image processing linearizing srgb is only half-way measure, and you might want to reach for a better colorspace altogether. cielab is obvious example, or maybe oklab/jzazbz/xyb/something else.

New comment by zokier in "C47/R47 Calculators"

zokier — Sat, 13 Jun 2026 20:52:40 +0000

There is also another major DM42 firmware project: DB48x https://48calc.org/

New comment by zokier in "Are you expected to run five Python type-checkers now?"

zokier — Mon, 08 Jun 2026 21:19:13 +0000

I find it funnysad that python people coined the phrase duck typing and then ended up designing what they have now. Meanwhile TS manages to embody duck typing far better even though coming from very different background.