Mastodawn

oh no...
I'm not sure I can actually do the NV12 planar output using 2 color attachments, because the UV part is half the height of of the Y part, does vulkan require color attachments to have the same size? I'd assume so since there is only one viewport...

maybe i gotta use multiple passes...

using nv12 as the output format is just a little insane like come on game *pokes it with a stick*

rk: could be an enum 1d ago

Okay so…you’re doing planar output. And Vulkan. And YUV color space?

This is very confusing to me. Especially the planar part.

@rk yes…

the YUV color space is the smallest problem, i can just convert between rgb and yuv easily, the problem is really the planar format

if a 4x4 RGB image is this:

8R8G8B 8R8G8B 8R8G8B 8R8G8B
8R8G8B 8R8G8B 8R8G8B 8R8G8B
8R8G8B 8R8G8B 8R8G8B 8R8G8B
8R8G8B 8R8G8B 8R8G8B 8R8G8B

a 4x4 NV12 image is like this:

8Y 8Y 8Y 8Y 
8Y 8Y 8Y 8Y 
8Y 8Y 8Y 8Y 
8Y 8Y 8Y 8Y
4U4V 4U4V 4U4V 4U4V
4U4V 4U4V 4U4V 4U4V

where each UV value corresponds to two vertically adjacent Y values

initially i missed this fact and thought it was a 1:1 UV <-> Y correspondence, which is why i considered multiple color attachments

rk: could be an enum 1d ago

So…I guess I missed the overarching context here. What are you doing that has planar graphics?

@rk it’s… related to the video processor MFT, which is a windows api to convert images (or streams of images, for deinterlacing, but that’s not relevant here) between different formats and/or crop, rotate etc. them… it’s a bit like imagemagick on crack

I’m dealing with a game that wants the output to be NV12

Video Processor MFT (Camerauicontrol.h) - Win32 apps

The video processor MFT is a Microsoft Media Foundation transform (MFT) that performs colorspace conversion, video resizing, deinterlacing, frame rate conversion, rotation, cropping, spatial left and right view unpacking, and mirroring.

rk: could be an enum 1d ago

Ah. You’re well beyond my expertise in this area then. If you were needing to deal with planar modes on an Amiga or with ILBMs (which I guess could actually be relevant?) I could help, but otherwise I’m well out of my bitdepth.

@rk i only learned this stuff yesterday

blobfoxupsidedown

(well, the entire planar stuff at least, i've been hacking on video processor mft for a while now, but never really had to touch dxvk/vulkan code for it)

rk: could be an enum 1d ago

Ah. You and I are about forty years out of sync. I definitely need to catch up but, if you’re interested in how we dealt with memory bandwidth limitations the original planar modes on the Amiga (and similarly vintaged systems) some spelunking might be fun.

@rk im really interested in that yea
i've also watched a bunch of videos about the N64 where the membus is very limited while the cpu is very powerful, so often it's better write smaller, less cpu-efficient code - not unrolling loops etc.
it also has to share the membus with the gpu

rk: could be an enum 1d ago

I am only casually interested in the N64, but it comes from an era where these sorts of things really mattered because you were designing your own bus/architecture.

Also, randomly, do you know @mothcompute ? If not, lemme introduce y’all. You’re both way smarter than I am at these sorts of low-level details and I would enjoy watching y’all nerd out.

genius osdev 🏳️‍⚧️1d ago

@rk @lizzy i actually got a nintendo 64 a couple weeks back and im honestly so excited to write some mips iii for it once im done with my current project

rk: could be an enum 1d ago

@mothcompute @lizzy

(Obligatory “See MIPS Run” is the best CPU architecture book ever comment.)

rk: could be an enum

@mothcompute @lizzy

(You both need to nerd out *here*. I’ve already done the Twitter migration. I’m not going to BlueSky too. I’m too old and tired.)

@rk @mothcompute i'm not going to bluesky either it's a VC funded centralized corpo algorithm platform (but painted in "woke" colors or whatever, idk why people fall for that), not sure what I'd want there

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @rk @mothcompute i have a bsky but i use it exclusively to follow sex workers and porn artists. i follow some fedi people there but everyone's mostly inactive. the tech threads i see are deeply uninteresting to me and unlike here with my 100,000 character limit i am restricted and forced to split my paragraphs into like 5 individual replies. it stiffens my discussion because i have to focus on beginning and end sentences actually making sense as it transitions between replies. made a short post about a stephen king novel i have been reading and enjoyed the accuracy of minor details on... https://bsky.app/profile/puppygirlhornypost.bsky.zoner.work/post/3lniix5anj22c ended up feeling clunky and awkward no matter how much i tried to condense it

Amber (@puppygirlhornypost.bsky.zoner.work)

Never heard of KYO but kfor.com behaves similarly. At my hs anytime something "big" would happen like the time my friend passed out doing pull ups and had a seizure... they'd somehow immediately swarm campus alongside www.news9.com. so spot on the nose there. 2/2 https://www.news9.com/

Bluesky Social

@puppygirlhornypost2 @mothcompute @rk

unlike here with my 100,000 character limit i am restricted and forced to split my paragraphs into like 5 individual replies

the funny thing is I am anti character limit but you’re one of the few people who sometimes makes me consider that it could be a good idea

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @mothcompute @rk reddit's 10k character limit is fine. hell? 5k is too.

@puppygirlhornypost2 @mothcompute @rk fun fact i got my gf to bump the character limit here twice so that I could post my lesbian vampire fics

but these days I just put them into a PDF on my website and link to it lol

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @mothcompute @rk 300? when links are considered a fixed 32? im throwing hands

@puppygirlhornypost2 @mothcompute @rk it's the tiktokification of microblogging

genius osdev 🏳️‍⚧️1d ago

@lizzy @rk @puppygirlhornypost2 well to be fair its more that tiktok and vine before it are kind of the microblogging of youtube. microblogging in turn being the tiktokification of blogging

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @puppygirlhornypost2 @mothcompute @rk who else makes you consider character limits being a good idea

neocat_floof_cute

@sodiboo @mothcompute @rk @puppygirlhornypost2 i dunno but you definitely make me consider rate limits

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @mothcompute @rk @puppygirlhornypost2 HEY I ALREADY HIT MY OWN RATE LIMITS FREQUENTLY THANK YOU EVERY MUCH

@sodiboo @mothcompute @rk @puppygirlhornypost2 holy shit for real?

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @mothcompute @rk @puppygirlhornypost2 no I made it up lol I turned those to the lowest setting since forever the fuck ago.

though the default ratelimit would probably hate me

genius osdev 🏳️‍⚧️1d ago

@lizzy @sodiboo @rk @puppygirlhornypost2 i used to run into rate limits almost all the time until @lua i guess fixed it? i dont really know actually

@mothcompute @lizzy @sodiboo @rk @puppygirlhornypost2 i edited the rate limiting code and added many zeros for people who are my friends :3

@mothcompute @sodiboo @rk @puppygirlhornypost2 @lua this is now officially a hellthread btw

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @mothcompute @sodiboo @rk @lua all my threads end up as a hell thread.

SPICY EVIL CAET🍬🍭🎄

@puppygirlhornypost2 @lua @mothcompute @sodiboo @rk @lizzy without ME?

blobfoxpleading

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@CAETFOOD @puppygirlhornypost2 @lua @mothcompute @rk @lizzy@social.vlhl.dev HELLO CAETFOOD!!!!!

SPICY EVIL CAET🍬🍭🎄

@sodiboo @mothcompute @lua @rk @lizzy @puppygirlhornypost2 HIIIIIIIIIIIIIIII

SPICY EVIL CAET🍬🍭🎄

@sodiboo @mothcompute @lua @rk @lizzy @puppygirlhornypost2

@CAETFOOD @sodiboo @mothcompute @lua @rk @puppygirlhornypost2 @navi so what are yall up to this evening

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @CAETFOOD @sodiboo @mothcompute @lua @rk @navi@social.vlhl.dev hell threading. also spending time with @Kio

@puppygirlhornypost2 @CAETFOOD @navi @lua @Kio @mothcompute @sodiboo @rk i love how we went from vulkan nv12 over amiga and n64 to bluesky to rate limits to lesbian vampire fic to trash talking each other to talking about our day

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @CAETFOOD @navi@social.vlhl.dev @lua @Kio @mothcompute @sodiboo @rk to making a meta analysis of this thread

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @CAETFOOD @navi@social.vlhl.dev @lua @Kio @mothcompute @sodiboo @rk i know @yassie_j@labyrinth.zone would be proud

@puppygirlhornypost2 @CAETFOOD @navi @lua @Kio @yassie_j @mothcompute @sodiboo @rk welcome to the thread yas

@lizzy @sodiboo @Kio @rk @CAETFOOD @puppygirlhornypost2 @lua @mothcompute okay, this is where I got added!

Now I understand why the cis want to take away our rights

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@puppygirlhornypost2 @lizzy@social.vlhl.dev @CAETFOOD @navi@social.vlhl.dev @lua @Kio @mothcompute @rk idk what y'all are talking about I'm still doing my day also I have no idea what the first half is like that all sounds like scary hardware things

@sodiboo @navi @mothcompute @CAETFOOD @Kio @lua @rk @puppygirlhornypost2 my first encounter with you was you dropping youtube barbie brainrot into my replies btw

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @navi@social.vlhl.dev @mothcompute @CAETFOOD @Kio @lua @rk @puppygirlhornypost2 oh yeah I did do that

rk: could be an enum 1d ago

@lizzy @sodiboo @Kio @CAETFOOD @navi @puppygirlhornypost2 @lua @mothcompute

Yes. This makes me happy.

SPICY EVIL CAET🍬🍭🎄

@lizzy @sodiboo @rk @navi @puppygirlhornypost2 @lua @mothcompute curled up on my bed, farty cause i ate too much soup

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@CAETFOOD @lizzy@social.vlhl.dev @rk @navi@social.vlhl.dev @puppygirlhornypost2 @lua @mothcompute should've eaten soap instead. I think @sylas can relate

@sodiboo @navi @mothcompute @CAETFOOD @lua @sylas @rk @puppygirlhornypost2 @navi @Kio @yassie_j we need to stop forking the thread

Amber (KittyGPT6.9)1d ago

@lizzy@social.vlhl.dev @sodiboo @navi@social.vlhl.dev @mothcompute @CAETFOOD @lua @sylas @rk @Kio @yassie_j@labyrinth.zone woah where's the forking? can i join i love to fork

rk: could be an enum 1d ago

@lizzy @sodiboo @sylas @Kio @yassie_j @CAETFOOD @navi @puppygirlhornypost2 @lua @mothcompute

I DONT KNOW WHATS HAPPENING

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@rk @lizzy@social.vlhl.dev @sylas @Kio @yassie_j@labyrinth.zone @CAETFOOD @navi@social.vlhl.dev @puppygirlhornypost2 @lua @mothcompute haha me neither

@rk @sodiboo @sylas @Kio @yassie_j @CAETFOOD @navi @puppygirlhornypost2 @lua @mothcompute you have fallen victim to a hellthread

melody moment 1d ago

@lizzy@social.vlhl.dev @rk @sodiboo @sylas @Kio @yassie_j@labyrinth.zone @CAETFOOD @navi@social.vlhl.dev @puppygirlhornypost2 @lua @mothcompute can i join in?

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @rk @sylas @Kio @yassie_j@labyrinth.zone @CAETFOOD @navi@social.vlhl.dev @puppygirlhornypost2 @lua @mothcompute the mentions list looks like the portion effects your have before unlocking "how did we get here"

genius osdev 🏳️‍⚧️1d ago

@rk @lizzy @sodiboo @sylas @Kio @yassie_j @CAETFOOD @navi @puppygirlhornypost2 @lua <--- there are So Many Mentions

@mothcompute @rk @sodiboo @sylas @Kio @yassie_j @CAETFOOD @navi @puppygirlhornypost2 @lua and you're not even replying to the largest branch

rk: could be an enum 1d ago

@mothcompute @lizzy @sodiboo @sylas @Kio @yassie_j @CAETFOOD @navi @puppygirlhornypost2 @lua

At some point you gotta like…start your own fedi server, right? Not yet, but at some point.

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @navi@social.vlhl.dev @mothcompute @CAETFOOD @lua @sylas @rk @puppygirlhornypost2 @Kio @yassie_j@labyrinth.zone haha. no. fuck right off with that mentality. half of us are on Misskey; forking is in our blood

@sodiboo @lizzy@social.vlhl.dev @navi@social.vlhl.dev @mothcompute @CAETFOOD @lua @sylas @rk @puppygirlhornypost2 @Kio @yassie_j@labyrinth.zone what in the gyatt is happening here

@sodiboo @navi @mothcompute @CAETFOOD @Kio @lua @sylas @rk @lizzy @puppygirlhornypost2 I use Akkoma btw

Rain雨 20h ago

@yassie_j@labyrinth.zone @sodiboo @navi@social.vlhl.dev @mothcompute @CAETFOOD @Kio @lua @sylas @rk @lizzy@social.vlhl.dev @puppygirlhornypost2@transfem.social Oh, a hellthread full of cuties?! Can I join?

SPICY EVIL CAET🍬🍭🎄

@sodiboo @navi @mothcompute @lua @sylas @rk @lizzy @puppygirlhornypost2 i wonder what @nightjar thinks about scatman but system of a down style https://youtu.be/6C3QKHDK-Og?si=OmZZj3U_tYnd34QJ

If System Of A Down wrote 'Scatman'

YouTube

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@CAETFOOD @navi@social.vlhl.dev @mothcompute @lua @sylas @rk @lizzy@social.vlhl.dev @puppygirlhornypost2 @nightjar I'm not clicking scatman YouTube from someone who posts stuff like "poop!!"

nightjar 1d ago

@CAETFOOD @sodiboo @navi @mothcompute @lua @sylas @rk @lizzy @puppygirlhornypost2 lmao he's not wrong

@sodiboo
please do not add me to random hellthreads, it clogs up my notifications and makes me upset- there's only one proper interaction with me in this entire conversation

sodi, mallory, mira, olivia, em, luna, etc 10h ago

@sylas I'm sorry 😔 I'll keep it in mind for the future

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @CAETFOOD @mothcompute @lua @rk @puppygirlhornypost2 @navi@social.vlhl.dev ive been subtitling an episode of a show. I finished the initial linear pass just like 20 minutes ago then I went on fedi. now all I have left to do is go back and refine it and rewatch to make sure they're all good and don't contain mistakes.

sodi, mallory, mira, olivia, em, luna, etc 1d ago

@lizzy@social.vlhl.dev @CAETFOOD @mothcompute @lua @rk @puppygirlhornypost2 @navi@social.vlhl.dev but that will be tomorrow. now I will eat and shower and stop stinking

@sodiboo @navi @mothcompute @CAETFOOD @lua @rk @puppygirlhornypost2 @Kio ENBY SMELL REMOVAL 😭😭😭