wrhn

xwintermutex

Joined 12 years ago

Karma
428
Submissions
43
Member since
Mar 6
I write code and tinker with electronics for a living. I am concerned about privacy, cyber security, evil governments and evil corporations. I know a bit about computer graphics. I restore old timer machines in my spare time.
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Recent submissions

Comment · 10 years ago
Any recommendations for backing up (private) keys? Like pgp keys for example? I consider printing them on paper, as text or QR code. Anything better than that?
Comment · 10 years ago
AFAIK, quite some components (Hadoop, Kafka, Spark, etc) of a typical big data stack are JVM based. Scala is JVM. And quite some people hate Java. That could be an answer.
Comment · 10 years ago
For people with just some basic computer graphics background that don't know what this "deferred rendering" is: when this technique became popular, these [1] slides were popular and inspired many.

[1]: http://www.slideshare.net/guerrillagames/deferred-rendering-...

Comment · 10 years ago
I guess it is because of the use of amplitude modulation [1], where the envelope ("strength") of the carrier (that is some higher frequency signal) follows the signal that is modulated onto it (speech, in this video). With say FM it wouldn't work, I presume.

[1]: https://en.wikipedia.org/wiki/Amplitude_modulation

Comment · 11 years ago
I think that learning of (and avoiding) the Granny Knot [1] is the best I ever learned about shoelace knots. If your shoelaces occasionally get loose while walking, check it.

[1] http://fieggen.com/shoelace/grannyknot.htm

Comment · 11 years ago
If you have a few pins that you suspect to be JTAG, but don't know which is which, there are tools for that too [1], (instead of manually trying).

[1]: http://hackaday.com/2013/10/02/jtagulator-finds-debug-interf...

Comment · 11 years ago
> As the linked article mentions, the solution was to optimize a massively-parallel algorithm by finding coherent rays that can be efficiently calculated together. It's a batch method: start casting a bunch of rays, identify similar rays and group them, calculate collisions for each group, cast reflected rays, identify similar rays and group them, etc. What I like about it conceptually is that in a way it treats light as a field rather than as individual directed rays.

How does this differ from "coherent ray tracing" and "ray packets", like people have been doing the last 15 years?

(e.g. "Interactive Rendering with Coherent Ray-Tracing" by Wald et al.: http://www.sci.utah.edu/~wald/Publications/2001/CRT/CRT.pdf)

Comment · 11 years ago
"Facebook changed the profile to her real name against her will ..."

How did they know her real name?

Comment · 11 years ago
I agree with his problems with status codes.
Comment · 11 years ago
What about Java?
Comment · 11 years ago
What excited me most in that article is the line "The press event also saw Sony announce that long-awaited game The Last Guardian would soon be released."
Comment · 11 years ago
FYI, Ken Silverman [1] is involved in this project.

[1]: http://en.wikipedia.org/wiki/Ken_Silverman (he wrote the Build engine, which powers Duke Nukem 3D and other games)

Comment · 11 years ago
Trivia: a Johnny Popper is a John Deere model M. I am currently in the process of restoring one. It is called a popper because of its distinct sound, caused by the non-180 degree angle between the two cylinders on the camshaft. I dream about every day to become a farmer.
Comment · 11 years ago
Looks more like C than idiomatic C++ at a first glance.

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