@copper-irl.bsky.social
Amateur rendering engineer
Csulb Physics & Applied mathematics student, class of idk lol I’ve been sick
Warning!!! Will yap about Monte Carlo & Walk-On-Spheres
Csulb Physics & Applied mathematics student, class of idk lol I’ve been sick
Warning!!! Will yap about Monte Carlo & Walk-On-Spheres
I was crunching to finish GR assignments (I need more time 😔) and had a realization. What if you remove gravity from GR? And it worked. Like, shockingly well. Is GR just a system to embed physics into a coordinate system? …isn’t this Lagrangian fluid dynamics? What a crazy plot twist wtf
December 13, 2025 at 4:08 AM
I was crunching to finish GR assignments (I need more time 😔) and had a realization. What if you remove gravity from GR? And it worked. Like, shockingly well. Is GR just a system to embed physics into a coordinate system? …isn’t this Lagrangian fluid dynamics? What a crazy plot twist wtf
Holy fuck I can’t fucking believe the Kerr reparameterization worked holy shit even the naked singularity works
Sure some of the rays are bouncing off the horizon but rk4 is doing its best
Sure some of the rays are bouncing off the horizon but rk4 is doing its best
December 10, 2025 at 10:22 AM
Holy fuck I can’t fucking believe the Kerr reparameterization worked holy shit even the naked singularity works
Sure some of the rays are bouncing off the horizon but rk4 is doing its best
Sure some of the rays are bouncing off the horizon but rk4 is doing its best
Degenerate General relativity is such a wacky idea I’m shocked it’s working so well. Schwarzschild produced a genuine simplification when using a degenerate normal instead of true 4 parameters. Kerr’s demon is scaring the hell out of me though……….
December 6, 2025 at 4:21 AM
Degenerate General relativity is such a wacky idea I’m shocked it’s working so well. Schwarzschild produced a genuine simplification when using a degenerate normal instead of true 4 parameters. Kerr’s demon is scaring the hell out of me though……….
Used the tools I got from the Gaia renderer to improve my atomic force microscope renderer. God damn it’s satisfying to see in 3d. Shai-Hulud not included
December 1, 2025 at 8:58 AM
Used the tools I got from the Gaia renderer to improve my atomic force microscope renderer. God damn it’s satisfying to see in 3d. Shai-Hulud not included
It sure produces a cool main sequence render. You can see Gaia's MCMC implementation struggle hard here. I ought to come back and make a better one using forward MC instead, those artifacts (and the 1.3 billion culled stars) bother me a lot
November 29, 2025 at 12:52 PM
It sure produces a cool main sequence render. You can see Gaia's MCMC implementation struggle hard here. I ought to come back and make a better one using forward MC instead, those artifacts (and the 1.3 billion culled stars) bother me a lot
Oh my god it fuckin works!!! 470 million stars render in ~90 seconds.
The odd artifacts, streaks, and lack of milky way arms is interesting though. I wonder what went wrong? I betcha the blue streaks are galaxies.
The odd artifacts, streaks, and lack of milky way arms is interesting though. I wonder what went wrong? I betcha the blue streaks are galaxies.
November 29, 2025 at 11:59 AM
Oh my god it fuckin works!!! 470 million stars render in ~90 seconds.
The odd artifacts, streaks, and lack of milky way arms is interesting though. I wonder what went wrong? I betcha the blue streaks are galaxies.
The odd artifacts, streaks, and lack of milky way arms is interesting though. I wonder what went wrong? I betcha the blue streaks are galaxies.
Whelp, I hope this works
November 29, 2025 at 2:46 AM
Whelp, I hope this works
Compressing this 700gb dataset has been super frustrating. Taking a break I wanted to see if I could plot the main sequence. I’m shocked how well it showed up, and how awful the published temperature and magnitude is!!
The odd quantization error seems to stem from whatever their MCMC optimizer is.
The odd quantization error seems to stem from whatever their MCMC optimizer is.
November 28, 2025 at 6:46 AM
Compressing this 700gb dataset has been super frustrating. Taking a break I wanted to see if I could plot the main sequence. I’m shocked how well it showed up, and how awful the published temperature and magnitude is!!
The odd quantization error seems to stem from whatever their MCMC optimizer is.
The odd quantization error seems to stem from whatever their MCMC optimizer is.
Oh my fucking god it works and it’s FAST
November 26, 2025 at 5:27 PM
Oh my fucking god it works and it’s FAST
Finally got the temperature mapping working from Gaia’s dataset. Oddly frustrating, and I don’t even think I got extinction right! The dust is still kinda visible here. I really hope I can boot performance from what I have so far before I begin processing all 3600 chunks…
November 25, 2025 at 8:49 AM
Finally got the temperature mapping working from Gaia’s dataset. Oddly frustrating, and I don’t even think I got extinction right! The dust is still kinda visible here. I really hope I can boot performance from what I have so far before I begin processing all 3600 chunks…
I suppose I need to commit to MIS hell early 🤪
I found Gaia’s passbands (it’s frequency response per color!) and that means I can do my vile human vision luminance spectra sampling to find per-star fits. Rip to my 12 bits per star metric lol
I found Gaia’s passbands (it’s frequency response per color!) and that means I can do my vile human vision luminance spectra sampling to find per-star fits. Rip to my 12 bits per star metric lol
November 19, 2025 at 3:33 AM
I suppose I need to commit to MIS hell early 🤪
I found Gaia’s passbands (it’s frequency response per color!) and that means I can do my vile human vision luminance spectra sampling to find per-star fits. Rip to my 12 bits per star metric lol
I found Gaia’s passbands (it’s frequency response per color!) and that means I can do my vile human vision luminance spectra sampling to find per-star fits. Rip to my 12 bits per star metric lol
Holy fuck it works holy shit (50fps)
Now I’ve gotta figure out how to reduce this down to the estimated 12 bits per star and I should be able to render the entire Milky Way. Not looking forward to the stochastic MIS hell to maintain performance when gravity shows up
Now I’ve gotta figure out how to reduce this down to the estimated 12 bits per star and I should be able to render the entire Milky Way. Not looking forward to the stochastic MIS hell to maintain performance when gravity shows up
November 17, 2025 at 6:59 AM
Holy fuck it works holy shit (50fps)
Now I’ve gotta figure out how to reduce this down to the estimated 12 bits per star and I should be able to render the entire Milky Way. Not looking forward to the stochastic MIS hell to maintain performance when gravity shows up
Now I’ve gotta figure out how to reduce this down to the estimated 12 bits per star and I should be able to render the entire Milky Way. Not looking forward to the stochastic MIS hell to maintain performance when gravity shows up
Looks like the circular BVH works! Now for a cuda test…
November 15, 2025 at 7:04 AM
Looks like the circular BVH works! Now for a cuda test…
Delaunay tesselations are kinda neat! I hope the distance metric I want to use with them isn’t too slow though…
November 14, 2025 at 3:51 AM
Delaunay tesselations are kinda neat! I hope the distance metric I want to use with them isn’t too slow though…
“I wanna render the Milky Way. I’ve heard the Gaia dataset is ~25gb! That’s not too bad” - statement dreamed up by the utterly deranged
It was 700gb, took almost 24 hours
But my god, the results are worth the wait
It was 700gb, took almost 24 hours
But my god, the results are worth the wait
November 12, 2025 at 10:40 PM
“I wanna render the Milky Way. I’ve heard the Gaia dataset is ~25gb! That’s not too bad” - statement dreamed up by the utterly deranged
It was 700gb, took almost 24 hours
But my god, the results are worth the wait
It was 700gb, took almost 24 hours
But my god, the results are worth the wait
Hey! It’s been a while. Finally have something worth sharing: I’ve been tinkering with Stochastic Laplacian Interpolation and using it to raymarch an image. It’s tricky since the underlying surface is implicit and stochastic! The bugs are very pretty though.
November 9, 2025 at 11:05 PM
Hey! It’s been a while. Finally have something worth sharing: I’ve been tinkering with Stochastic Laplacian Interpolation and using it to raymarch an image. It’s tricky since the underlying surface is implicit and stochastic! The bugs are very pretty though.
Been playing a lot of Voices of the Void lately, and it got me thinking, what if this was a real Radio Telescope? They produce images, right? What would they look like, and how do they differ to the optical telescopes I'm used to?
1/🧵
1/🧵
May 8, 2025 at 1:28 AM
Been playing a lot of Voices of the Void lately, and it got me thinking, what if this was a real Radio Telescope? They produce images, right? What would they look like, and how do they differ to the optical telescopes I'm used to?
1/🧵
1/🧵
Holy shit I think my hail mary worked
Im dealing with medical issues, but CSULB wants me to take one class. Ive been curious about one for a while: Statistical Mechanics. I added it week 2, professor was absent weeks 3 and 4, and first day I'm there? An Exam! And I think I somehow passed!!
Im dealing with medical issues, but CSULB wants me to take one class. Ive been curious about one for a while: Statistical Mechanics. I added it week 2, professor was absent weeks 3 and 4, and first day I'm there? An Exam! And I think I somehow passed!!
February 16, 2025 at 10:43 PM
Holy shit I think my hail mary worked
Im dealing with medical issues, but CSULB wants me to take one class. Ive been curious about one for a while: Statistical Mechanics. I added it week 2, professor was absent weeks 3 and 4, and first day I'm there? An Exam! And I think I somehow passed!!
Im dealing with medical issues, but CSULB wants me to take one class. Ive been curious about one for a while: Statistical Mechanics. I added it week 2, professor was absent weeks 3 and 4, and first day I'm there? An Exam! And I think I somehow passed!!
Found this meme on the dumpster fire site, and it nerd sniped me.
It was fun! Didn't take too long either. Definitely not hours and pages of work. It's the negative of the laplace transform of cosine, evaluated from a to b. Feynman integration strikes again
(I hope the alt text is useful)
It was fun! Didn't take too long either. Definitely not hours and pages of work. It's the negative of the laplace transform of cosine, evaluated from a to b. Feynman integration strikes again
(I hope the alt text is useful)
February 5, 2025 at 12:37 PM
Found this meme on the dumpster fire site, and it nerd sniped me.
It was fun! Didn't take too long either. Definitely not hours and pages of work. It's the negative of the laplace transform of cosine, evaluated from a to b. Feynman integration strikes again
(I hope the alt text is useful)
It was fun! Didn't take too long either. Definitely not hours and pages of work. It's the negative of the laplace transform of cosine, evaluated from a to b. Feynman integration strikes again
(I hope the alt text is useful)
Watched a YouTube math video that setup this cool proof that involved finding the area where a square and a circle intersect, and the presenter said it’s unsolved. I uh… solved this for my physics report a bit ago, but it’s computationally hairy. Should I comment on the video?
youtu.be/Y6bWUfmJ0-4
youtu.be/Y6bWUfmJ0-4
This Math Problem Stumped Everyone I Showed it To…
YouTube video by PurpleMind
m.youtube.com
February 5, 2025 at 10:37 AM
Watched a YouTube math video that setup this cool proof that involved finding the area where a square and a circle intersect, and the presenter said it’s unsolved. I uh… solved this for my physics report a bit ago, but it’s computationally hairy. Should I comment on the video?
youtu.be/Y6bWUfmJ0-4
youtu.be/Y6bWUfmJ0-4
I had a brain blast: What if my decaying psyche since 2022 is from the emergence of reels in all platforms? I don't mind the content, but I am very addicted to the swipe action. Feels like a gambling addiction. I hope I can use revanced for this too!
January 30, 2025 at 1:53 AM
I had a brain blast: What if my decaying psyche since 2022 is from the emergence of reels in all platforms? I don't mind the content, but I am very addicted to the swipe action. Feels like a gambling addiction. I hope I can use revanced for this too!
I love when latex generates comfy text, but my god I really need to learn how it works under the hood. I can't quite figure out how to get the alignment to do what I want.
This is part of an assignment for a class i got an incomplete in. I'll be posting more fun graphics about it soon!
This is part of an assignment for a class i got an incomplete in. I'll be posting more fun graphics about it soon!
January 27, 2025 at 3:13 AM
I love when latex generates comfy text, but my god I really need to learn how it works under the hood. I can't quite figure out how to get the alignment to do what I want.
This is part of an assignment for a class i got an incomplete in. I'll be posting more fun graphics about it soon!
This is part of an assignment for a class i got an incomplete in. I'll be posting more fun graphics about it soon!
Somehow, of all the things I’ve tried (antidepressants included), L-Theanine (a chemical in tea but not coffee), and Creatine (a workout supplement) are the most impactful in terms of energy reserves. I can finally start working again, but i can’t shake the feeling they’re placebos.
January 26, 2025 at 3:32 AM
Somehow, of all the things I’ve tried (antidepressants included), L-Theanine (a chemical in tea but not coffee), and Creatine (a workout supplement) are the most impactful in terms of energy reserves. I can finally start working again, but i can’t shake the feeling they’re placebos.
Reposted
LA PEEPS, the wind is coming back hard tomorrow. With even drier air than on the 6th. Get your go-bags together and gas up your vehicles tonight!
January 20, 2025 at 1:25 AM
LA PEEPS, the wind is coming back hard tomorrow. With even drier air than on the 6th. Get your go-bags together and gas up your vehicles tonight!
Got a glimpse of the Palisades fire from north Redondo last night. Stay safe yall!!!
January 11, 2025 at 1:57 AM
Got a glimpse of the Palisades fire from north Redondo last night. Stay safe yall!!!