this post was submitted on 02 Feb 2024
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[–] teft@lemmy.world 140 points 9 months ago (2 children)

The human eye can only see 1 frame per 18 hours so I consider this reasonably fast.

[–] GBU_28@lemm.ee 50 points 9 months ago (1 children)
[–] BassTurd@lemmy.world 10 points 9 months ago

Nah, just The Lorax.

[–] Laticauda@lemmy.ca 15 points 9 months ago

You may need to consult a doctor.

[–] Num10ck@lemmy.world 101 points 9 months ago (1 children)

i once took 12+ hours to raytrace on an 8mhz Amiga only to realize that it didn't have any light sources and so was pitch black.

[–] istoff@lemmy.world 15 points 9 months ago

I share that memory. At least twice

[–] Ensign_Crab@lemmy.world 38 points 9 months ago

It's not that the bear dances well, it's that the bear dances at all.

[–] resketreke@kbin.social 34 points 9 months ago (1 children)

60 frames per 42.5 days, playable.

[–] lauha@lemmy.one 6 points 9 months ago* (last edited 9 months ago) (1 children)

You could get a totally playable fps if you play in geological time scale

Edit. Not really fpS as s stands for second, but ...

[–] e0qdk@kbin.social 6 points 9 months ago

Frames Per Stratum

[–] slaacaa@lemmy.world 32 points 9 months ago

Nice, hitting that sweetspot at 42 fpm (frame per month)

[–] rockSlayer@lemmy.world 29 points 9 months ago (1 children)

I mean that's pretty fucking impressive imo. I figured a RT frame would take days to render on hardware that old

[–] VindictiveJudge@lemmy.world 2 points 9 months ago

And back when that computer was contemporary, it would have. We've learned a hell of a lot since Nvidia announced they had cracked real-time ray tracing all those years ago.

[–] cmnybo@discuss.tchncs.de 27 points 9 months ago (1 children)

Now write it in Z80 assembly instead of basic and see how much faster you can get it to run.

[–] BearOfaTime@lemm.ee 7 points 9 months ago

So true.

When I switched from basic to assembler on a Trash 80 Model 1, it was truly night and day

[–] PrinceWith999Enemies@lemmy.world 27 points 9 months ago (1 children)

This computer is illegal in Florida, Texas, and Russia.

[–] khannie@lemmy.world 9 points 9 months ago (1 children)

Is this true? Sounds like there's a story you're not telling us

[–] PrinceWith999Enemies@lemmy.world 41 points 9 months ago (1 children)

It’s a rainbow thing 🏳️‍🌈

[–] khannie@lemmy.world 14 points 9 months ago

Ha! You got me.

[–] SatanicNotMessianic@lemmy.ml 26 points 9 months ago

It’s like playing chess by mail, but with Doom.

[–] Jarmer 13 points 9 months ago (1 children)

700 years worth of compute to do about an hour of gaming that I just did on my pc at home in realtime ... damn.

Did I math it right? I was averaging about 100 fps in hogwarts for about an hour.

[–] Illecors@lemmy.cafe 3 points 9 months ago

Say you generated 86'400'000 frames. 17h a frame that's roughly 16'767 years.

[–] Poggervania@kbin.social 9 points 9 months ago (1 children)

tbf that’s probably on par with the performance Cyberpunk 2077 was doing on release

[–] fixerdude2@lemmy.ca 8 points 9 months ago (1 children)

Still remember loading games from cassette tapes on this thing and the Z80.

[–] funkless_eck@sh.itjust.works 4 points 9 months ago

"is it still loading or did it fail?"

ah, plus ça change...

[–] Donjuanme@lemmy.world 5 points 9 months ago (1 children)

What resolution? I'm guessing 64x48?

[–] bjoern_tantau@swg-empire.de 16 points 9 months ago (1 children)

The strain of going from a 32 x 22 image to a 256 x 176 one is evident in how much longer this secondary image took to render. From 879.75 seconds (nearly 15 minutes) to 61,529.88 seconds (over 17 hours). Luckily, some optimisations and time-saving tweaks meant this could be brought down to 8,089.52, or near-ish two and a half hours.

Those are really reasonable values. I guess my laptop would take that long to render a 4k image as well.

[–] pixeltree@lemmy.blahaj.zone 3 points 9 months ago (1 children)

Really depends on the complexity of the frame being rendered for how fast your laptop can render it

[–] frezik@midwest.social 1 points 9 months ago (1 children)

Ray tracing speed primary depends on the number of pixels, not the complexity of the scene.

[–] pixeltree@lemmy.blahaj.zone 2 points 9 months ago* (last edited 9 months ago) (1 children)

The complexity of your scene makes a huge difference. If your scene has fewer things for light to bounce off of, doing the ray tracing is much faster

(Source: I do blender renders with cycles)

[–] frezik@midwest.social 2 points 9 months ago (1 children)

So I'm not exactly sure how Blender implements this. There can be a few details that can make a huge difference. Just for starters, is Blender rendering 100% ray tracing here, or is it a hybrid model with a rasterizer. Rasterizers tend to scale with the number of objects, while ray tracing scales with the number of pixels. A hybrid will be, obviously, something in between.

Then there is how it calculates collisions. There is a way to very quickly detect collisions of AABB boxes (basically rectangles that surround your more complicated object), but it takes a little effort to implement this and get the data structures right. You can actually do Good Enough sometimes by matching every ray to every AABB, and then you do more complex collision checking against what's left, but there's a certain scale where that breaks down.

Blender is generally very well done from what little I know of it, but I'm not sure how it handles all these tradeoffs.

[–] pixeltree@lemmy.blahaj.zone 1 points 9 months ago

So, as far as I know the cycles engine does ray tracing until it hits a noise threshold, then does ai denoising for the final cleanup. You can see where the more visually complex parts of your render are, because it will take a lot longer to render to a less noisy state. I don't know specifics of how it works under the hood, but given how complex parts of your image take longer to tender to an acceptable threshold than simpler parts it seems obvious to me that render time scales with complexity.

[–] hakunawazo@lemmy.world 5 points 9 months ago

Since my dedicated hybrid graphics card was broken, my gaming experience is almost the same as with this one.

[–] bandwidthcrisis@lemmy.world 4 points 9 months ago

Back in the day we had to just use VU-3D.

https://youtu.be/6Em-CWYZhG8?feature=shared

[–] horsey@lemm.ee 0 points 9 months ago

This is what it was like using 3D programs on an Amiga in the late 80s or early 90s. One image took hours and hours to render. 5-6 hours would be a short one, usually it was more like 12.

[–] metaStatic@kbin.social -2 points 9 months ago

How many btc per decade is that?

[–] SharkAttak@kbin.social -3 points 9 months ago (3 children)

I can't help to think that all that amount of effort could be better spent.

[–] fuckwit_mcbumcrumble@lemmy.world 10 points 9 months ago

But where’s the fun in that?

[–] glowie@h4x0r.host -2 points 9 months ago* (last edited 9 months ago)

I was thinking the same sort of thing. What'd I'd kill for the time to spend on useless shit heh.