Uploaded January 2011 | Updated September 2026, 8 hours ago
This isn't a real laser! It's an OpenGL-based laser simulator which attempts to simulate the behavior and quirks of a real laser scanner to a reasonable degree. It works straight off of the JACK sample stream, so it knows nothing about frame boundaries, just like the real laser. Instead, it attempts to simulate persistence of vision. In other words, if the image is too complex, it will flicker, just like the real laser.
This video flickers less than my earlier Bad Apple video for three reasons: because the camera exaggerates flicker (in real life it doesn't look that bad, but the camera shutter makes it look much worse), because I've improved the video tracer algorithm quite a bit since last time, and because the persistence of the simulator is slightly higher than what you experience in real life. It's still worse than it should be, though, since YouTube decimated it to 30fps (it originally renders at 60fps or whatever your monitor's refresh rate is)
I've pushed it to the OpenLase repo, so now if you don't have a laser you can still play with OpenLase and get an idea of how it would look in real life :)
This isn't a real laser! It's an OpenGL-based laser simulator which attempts to simulate the behavior and quirks of a real laser scanner to a reasonable degree. It works straight off of the JACK sample stream, so it knows nothing about frame boundaries, just like the real laser. Instead, it attempts to simulate persistence of vision. In other words, if the image is too complex, it will flicker, just like the real laser.
This video flickers less than my earlier Bad Apple video for three reasons: because the camera exaggerates flicker (in real life it doesn't look that bad, but the camera shutter makes it look much worse), because I've improved the video tracer algorithm quite a bit since last time, and because the persistence of the simulator is slightly higher than what you experience in real life. It's still worse than it should be, though, since YouTube decimated it to 30fps (it originally renders at 60fps or whatever your monitor's refresh rate is)
I've pushed it to the OpenLase repo, so now if you don't have a laser you can still play with OpenLase and get an idea of how it would look in real life :)
![Work stream: Writing a hypervisor Pt.9 [2021-05-13]](https://i.ytimg.com/vi/HtfJI0ihVVg/mqdefault.jpg "Work stream: Writing a hypervisor Pt.9 [2021-05-13]
Mmiotrace hypervisor, maybe?
Website: https://asahilinux.org
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In these streams I show how I work. I may or may not talk, and I may or may not read the chat. If you need to catch my attention, its probably best to ping me on IRC, check out asahilinux.org for details!
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I do not broadcast background music, for copyright reasons and because my music tastes may not match yours. I highly recommend bringing along your own music!")
![Work stream: Writing a hypervisor Pt.6 [2021-05-08]](https://i.ytimg.com/vi/I99KT-8hRgM/mqdefault.jpg "Work stream: Writing a hypervisor Pt.6 [2021-05-08]
Mmiotrace hypervisor, maybe?
Website: https://asahilinux.org
Patreon: https://patreon.com/marcan
GitHub Sponsors: https://github.com/sponsors/marcan
In these streams I show how I work. I may or may not talk, and I may or may not read the chat. If you need to catch my attention, its probably best to ping me on IRC, check out asahilinux.org for details!
There is currently no set schedule for these streams, so subscribe and click the bell if you want to be notified when they happen.
I do not broadcast background music, for copyright reasons and because my music tastes may not match yours. I highly recommend bringing along your own music!")
![Work stream: Yak shaving USB on m1n1 [2021-04-17]](https://i.ytimg.com/vi/JCt4lrKA-sE/mqdefault.jpg "Work stream: Yak shaving USB on m1n1 [2021-04-17]
Lots of yaks on the way to the mmiotrace hypervisor
Website: https://asahilinux.org
Patreon: https://patreon.com/marcan
GitHub Sponsors: https://github.com/sponsors/marcan
In these streams I show how I work. I may or may not talk, and I may or may not read the chat. If you need to catch my attention, its probably best to ping me on IRC, check out asahilinux.org for details!
There is currently no set schedule for these streams, so subscribe and click the bell if you want to be notified when they happen.
I do not broadcast background music, for copyright reasons and because my music tastes may not match yours. I highly recommend bringing along your own music!")
![Work stream: Writing a hypervisor Pt.5 [2021-05-04]](https://i.ytimg.com/vi/M0KzXhZaO14/mqdefault.jpg "Work stream: Writing a hypervisor Pt.5 [2021-05-04]
Mmiotrace hypervisor, maybe?
Website: https://asahilinux.org
Patreon: https://patreon.com/marcan
GitHub Sponsors: https://github.com/sponsors/marcan
In these streams I show how I work. I may or may not talk, and I may or may not read the chat. If you need to catch my attention, its probably best to ping me on IRC, check out asahilinux.org for details!
There is currently no set schedule for these streams, so subscribe and click the bell if you want to be notified when they happen.
I do not broadcast background music, for copyright reasons and because my music tastes may not match yours. I highly recommend bringing along your own music!")
