:frog_gone: martty's mesa misadventures | Graphics Programming | Page 3

midnight shore Feb 3, 2023, 11:31 AM

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@wanton carbon btw do you know if s_halt is the same as umr stopping the waev?

wanton carbon Feb 3, 2023, 11:32 AM

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i am fairly confident it is not

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i think with the wave state manip working it might be possible to unhalt s_halt-ed waves

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but there was some footnote in rocm that that puts the queue into some error state

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i don't know where that error state is

wanton carbon Mar 19, 2023, 4:42 PM

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@raven vortex moving it here not to disrupt pixelduck's thread

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i am dumping the CS of the windows driver

raven vortex Mar 19, 2023, 4:43 PM

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oh

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sqtt contains all the register writes if that's the data you want

wanton carbon Mar 19, 2023, 4:44 PM

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i just mutilated umr until it worked 🙂

raven vortex Mar 19, 2023, 4:44 PM

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it can work on... windows?

wanton carbon Mar 19, 2023, 4:44 PM

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well parsing a pm4 stream from a file, yes

dark vortex Mar 19, 2023, 4:44 PM

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~~oh my god stop before someone files issues about radv on windows not working~~

wanton carbon Mar 19, 2023, 4:44 PM

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too late

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i am now reasonably confident this can work

dark vortex Mar 19, 2023, 4:45 PM

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oh dear

wanton carbon Mar 19, 2023, 4:45 PM

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https://tenor.com/bVg3K.gif

Tenor

dark vortex Mar 19, 2023, 4:46 PM

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to be clear to any future windows user i will not waste my time booting up windows to debug shit

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unrelated but I wonder if the windows driver supports GWS (I think not?)

wanton carbon Mar 19, 2023, 4:48 PM

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dear god

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these questions shan't be asketh

dark vortex Mar 19, 2023, 4:49 PM

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lol

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I'd guess it doesn't because the only user on linux is hip stuff which doesn't work on windooze

wanton carbon Mar 19, 2023, 4:49 PM

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i have no knowledge of the amd kmd on windows

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but i'd hazard that indeed it doesn't have any code to make it work

dark vortex Mar 19, 2023, 4:50 PM

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still want me to use GWS in radv? :frog_demon:

wanton carbon Mar 19, 2023, 4:50 PM

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ye boii

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doesn't mean it can't have that code in the future 🙂

dark vortex Mar 19, 2023, 4:52 PM

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that's ambitious

wanton carbon Mar 19, 2023, 6:51 PM

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tf windoze

floral viper Mar 19, 2023, 7:04 PM

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I can't believe Windows would do this

fallen nest Mar 20, 2023, 12:25 AM

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windows has some weird ass sync primitives if you dig for it

wanton carbon Mar 20, 2023, 12:23 PM

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@dark vortex apologies sire, did you have a windows build guide for mesa or am i misremembering

dark vortex Mar 20, 2023, 12:26 PM

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I have one for lavapipe

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https://gist.github.com/pixelcluster/31ae7bd5d1c57ed23db023e7db000eda

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I never found a way that didn't involve building llvm sadly

wanton carbon Mar 20, 2023, 12:27 PM

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lovely

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thank you

dark vortex Mar 20, 2023, 12:35 PM

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dark vortex <https://gist.github.com/pixelcluster/31ae7bd5d1c57ed23db023e7db000eda>

holy fuck that was only a year ago

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my perception of time is absolutely trashed

wanton carbon Mar 20, 2023, 12:35 PM

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acceleration structures accelerate time

wanton carbon Mar 20, 2023, 6:06 PM

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windows build kinda scuffed :unsurprised-electric-beast:

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ye boii

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was better than expected tbqh

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@dark vortex nb i didn't need to build llvm

dark vortex Mar 20, 2023, 6:15 PM

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huh

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no shader disasm for you then but ok

wanton carbon Mar 20, 2023, 6:15 PM

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i'm gucci 🙂

dark vortex Mar 20, 2023, 6:16 PM

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heh

wanton carbon Mar 20, 2023, 6:16 PM

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-Dllvm=disabled i passed this

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then i didn't need llvm

dark vortex Mar 20, 2023, 6:16 PM

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ye for radv that works ig

wanton carbon Mar 20, 2023, 6:16 PM

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i imagine you need llvm for lavapipe tho KEKW

dark vortex Mar 20, 2023, 6:16 PM

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for llvm-based software rasterizers building without llvm isn’t that optimal

wanton carbon Mar 20, 2023, 6:16 PM

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probably very fast tho

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but not great fidelity in output

dark vortex Mar 20, 2023, 6:17 PM

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but there is deterministic worst case performance and memory requirements

wanton carbon Mar 20, 2023, 6:28 PM

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ssshh

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i don't wanna attract him

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also the driver is not being found

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THOMAS

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INFO | DRIVER: Located json file "C:\mesa\share\vulkan\icd.d\radeon_icd.x86_64.json" from registry "HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\Vulkan\Drivers"
INFO | DRIVER: Driver C:\mesa\share\vulkan\icd.d\radeon_icd.x86_64.json is not recognized as a known driver. It will be assumed to be active
DRIVER: Found ICD manifest file C:\WINDOWS\System32\DriverStore\FileRepository\u0389188.inf_amd64_cd9701bcd4981eb7\B389045\amd-vulkan64.json, version "1.0.0"
DEBUG: Searching for ICD drivers named .\amdvlk64.dll
DRIVER: Found ICD manifest file C:\mesa\share\vulkan\icd.d\radeon_icd.x86_64.json, version "1.0.0"
DEBUG: Searching for ICD drivers named C:\mesa\bin\vulkan_radeon.dll

dark vortex Mar 20, 2023, 7:21 PM

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wanton carbon INFO | DRIVER: Located json file "C:\mesa\share\vulkan\icd.d\radeon_icd.x86_6...

well is vulkan_radeon.dll at the correct location?

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oh wait can you try running vkvia

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I remember this

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or more accurately, the ptsd is back

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vkvia might report some random windows error code when you try to load the DLL

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I’m not sure exactly what field it was but there was some metadata inside the DLL that was missing and memedows returned the error code then

autumn notch Mar 20, 2023, 7:25 PM

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Whats up with drivers and three letter acronyms

dark vortex Mar 20, 2023, 7:25 PM

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my memory of the 2022 dll loading incident is sparse, the brain tends to suppress memories of traumatic events

wanton carbon Mar 20, 2023, 7:56 PM

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dark vortex vkvia might report some random windows error code when you try to load the DLL

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i'm getting this

dark vortex Mar 20, 2023, 7:57 PM

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Hm ok then that’s something different I think

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but the file is there isn’t it? 🐸

wanton carbon Mar 20, 2023, 7:58 PM

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yuh

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has the exports

dark vortex Mar 20, 2023, 8:04 PM

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bruh

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what happens if you try to load it yourself

wanton carbon Mar 20, 2023, 8:10 PM

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lets see

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ok, i figured it out

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for some reason radv is compiling a second dll, z.dll

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that does not get found and then module loading fails

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any meson whisperers in chat

dark vortex Mar 20, 2023, 8:35 PM

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oh

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that’s zlib

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for zipping that shader cache afaik

wanton carbon Mar 20, 2023, 8:37 PM

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ye i got that

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but can i ask meson to pretty please static link that shit in

dark vortex Mar 20, 2023, 8:39 PM

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--prefer-static

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maybe?

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at configure time that is

wanton carbon Mar 20, 2023, 8:46 PM

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that does not help because it tries to static link all manner garbanzo from windows (which can't be done)

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but

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dep_zlib = dependency('zlib', version : '>= 1.2.3',
                      fallback : ['zlib', 'zlib_dep'],
                      required : get_option('zlib'), static : true)

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this worky

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gah

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vkvia still reports the same

dark vortex Mar 20, 2023, 8:54 PM

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might be the metadata issue now?

wanton carbon Mar 20, 2023, 8:54 PM

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any recollection of what that was?

dark vortex Mar 20, 2023, 8:56 PM

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#questions message

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just found that

wanton carbon Mar 20, 2023, 8:56 PM

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nice

dark vortex Mar 20, 2023, 8:57 PM

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the metadata req was vkvia-only then

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so not sure how much applies

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if all else fails, dot’s suggestion about windows loader snaps might help 🐸

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I remember needing to use windbg and foraging through a lot of logspam tho

wanton carbon Mar 20, 2023, 8:59 PM

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fug

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vulkaninfo doesn't work either

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so i guess i have to solve this

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no pastduck meson files hanging around that solve this?

dark vortex Mar 20, 2023, 9:06 PM

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no

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iirc I didn’t modify the meson files at all

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no idea if anything changed (and if so, what)

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haven’t seriously used windows for almost a year I think

wanton carbon Mar 20, 2023, 9:08 PM

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:cat_pain:

dark vortex Mar 20, 2023, 9:11 PM

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~~you did kind of ask for it~~

wanton carbon Mar 20, 2023, 9:13 PM

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i asked for different pain KEKW

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bangin!

dark vortex Mar 20, 2023, 9:18 PM

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nice

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what was it

wanton carbon Mar 20, 2023, 9:18 PM

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that

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adding version

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i think its a matter of making an rc file to compile with the dll

dark vortex Mar 20, 2023, 9:18 PM

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welp

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btw how do you intend to even make a windows winsys

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given the kmd api is proprietary and unstable?

wanton carbon Mar 20, 2023, 9:20 PM

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it not be

dark vortex Mar 20, 2023, 9:20 PM

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wut

wanton carbon Mar 20, 2023, 9:20 PM

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windows has the wddm, which comes with a libdrm equivalent thing

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which is a stable interface against the kmd

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you don't talk to the kmd, just the same as linux

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its in fact more encapsulated

dark vortex Mar 20, 2023, 9:21 PM

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yeah I did know about wddm

wanton carbon Mar 20, 2023, 9:21 PM

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well you do talk more or less directly to kmd in linux after the initial bit

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but in the wddm model you don't

dark vortex Mar 20, 2023, 9:21 PM

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didn’t know it had a libdrm thing that allows for custom submit etc

wanton carbon Mar 20, 2023, 9:22 PM

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wdym?

dark vortex Mar 20, 2023, 9:23 PM

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well to submit your stuff you need to have a way to give the kmd a pointer to a cmdbuf that contains the pkt3 at least

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and probably other vendor specific stuff as well?

wanton carbon Mar 20, 2023, 9:24 PM

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yeah thats basically the api it has

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give a gpuva to the "commands"

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if you look at radv, it doesn't talk much to the kmd

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seems to be the same on windows

dark vortex Mar 20, 2023, 9:26 PM

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ye the kmd interface isn’t a lot

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like 9 functions or so?

wanton carbon Mar 20, 2023, 9:26 PM

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yeah

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maybe its enough to just translate those 9 functions

dark vortex Mar 20, 2023, 9:27 PM

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should actually be

wanton carbon Mar 20, 2023, 9:27 PM

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and so here we are

dark vortex Mar 20, 2023, 9:28 PM

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I’m still not sure how good an idea this but you did manage to capture my interest

wanton carbon Mar 20, 2023, 9:28 PM

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you mean

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in a feasibility way or in a "good idea" way

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as in opening pandora's box

dark vortex Mar 20, 2023, 9:29 PM

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idk it feels kinda weird, I guess you could have a pandora’s box moment

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but rationally thinking about it I doubt that needs to be a concern rn

wanton carbon Mar 20, 2023, 9:29 PM

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do you have sth specific in mind

dark vortex Mar 20, 2023, 9:29 PM

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no

wanton carbon Mar 20, 2023, 9:29 PM

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alrighty

dark vortex Mar 20, 2023, 9:30 PM

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well yes actually

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[RADV]screen freeze and game crash

unplayable fix immediately
os windows 11
gpu some old ass radeon or smth
<end of issue report>

wanton carbon Mar 20, 2023, 9:31 PM

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yeyeye

dark vortex Mar 20, 2023, 9:31 PM

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not that it’s a likely thing to occur

wanton carbon Mar 20, 2023, 9:32 PM

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on the other hand testing against amd prop

dark vortex Mar 20, 2023, 9:32 PM

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hmm also right

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don’t see this as discouraging you from playing with it btw

wanton carbon Mar 20, 2023, 9:32 PM

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if there are multiple icds, does the loader pick the first?

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i'll switch to asking thomas

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he loves this shit bleakekw

dark vortex Mar 20, 2023, 9:33 PM

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well wdym picking the first

wanton carbon Mar 20, 2023, 9:33 PM

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well, how does it work when you have both radv and amdvlk

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do you have to disable one?

dark vortex Mar 20, 2023, 9:34 PM

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no at least not on Linux

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you get different phys devices for each one

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(sauce: i have all 3 drivers on my desktop)

wanton carbon Mar 20, 2023, 9:34 PM

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pogpilled

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i guess then why is vulkaninfo not doing that

dark vortex Mar 20, 2023, 9:35 PM

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frogstare it should

wanton carbon Mar 20, 2023, 9:35 PM

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yeah

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wait

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probably not gonna be doing stuff before i make stuff with the winsys now is it 😄

dark vortex Mar 20, 2023, 9:36 PM

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oh

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yeah

wanton carbon Mar 20, 2023, 9:36 PM

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null winsys doin its best KEKW

dark vortex Mar 20, 2023, 9:36 PM

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radv won’t really report physical devices unless you RADV_FORCE_FAMILY it I think

wanton carbon Mar 20, 2023, 9:37 PM

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i guess thats a nice self contained place to start

dark vortex Mar 20, 2023, 9:37 PM

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you might have to do some phys device detection plumbing

wanton carbon Mar 20, 2023, 9:40 PM

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i actually had a moment when i thought that windoze requires driver signing now

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but that is only for kernel mode ones

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thanks for the help, i imagine the next bit will take me a while

dark vortex Mar 20, 2023, 9:48 PM

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I’ll go sleep and debug hangs more tomorrow, let’s see who’s done first 🐸

wanton carbon Mar 20, 2023, 9:51 PM

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enjoy! gn

wanton carbon Mar 20, 2023, 11:10 PM

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apparently only vkvia is so picky

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for just loading a driver the version is not needed

wanton carbon Mar 21, 2023, 9:36 PM

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@dark vortex can I ask for a pair of eyeholes

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https://gitlab.freedesktop.org/mesa/mesa/-/blob/main/src/amd/vulkan/radv_device.c#L999 creates some meta shaders

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https://gitlab.freedesktop.org/mesa/mesa/-/blob/main/src/amd/vulkan/radv_device.c#L1034 creates the fallback cache

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isn't this the wrong way around

dark vortex Mar 21, 2023, 9:38 PM

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radv pipeline caching is a bit weird I think, afaik meta shaders are cached a bit separately

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don’t ask me how tho 🐸

wanton carbon Mar 21, 2023, 9:39 PM

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well it was crashing for me until i moved the fallback cache creation before the meat shaders

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well i mean, it is still crashing, but somewhere else now 😄

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ye ok I see

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the meta shaders are separately cached, which are stubbed out on win32

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so it falls back to the global fallback, which is not created on time

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https://tenor.com/baylk.gif

Tenor

floral viper Mar 21, 2023, 9:43 PM

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I'm waiting for the inevitable

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https://tenor.com/view/anakin-starwars-itsworking-gif-5028819

Tenor

wanton carbon Mar 21, 2023, 9:43 PM

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all good projects lead to that gif

wanton carbon Mar 21, 2023, 11:19 PM

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win32 fence: implemented

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tune in next time to see it blow up!

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ngl the common vk code is pretty bonkerific in mesa

wanton carbon Mar 23, 2023, 11:06 PM

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owo what is this

floral viper Mar 23, 2023, 11:09 PM

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D3D
sus

wanton carbon Mar 23, 2023, 11:26 PM

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https://tenor.com/sZnx.gif

Tenor

Toilet Clog

▶ Play video

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me stuffing an alarming large amount of seemingly random bytes into the kmd

wanton carbon Mar 24, 2023, 10:52 AM

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winsys submit takes a const struct radv_winsys_submit_info *submits but no count

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https://tenor.com/bT8oU.gif

Tenor

floral viper Mar 24, 2023, 10:52 AM

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it's got a null terminator

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source: trust me bro

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ok but zig unironically has a generalized concept of "pointer with sentinel terminator" which I find to be very funny because no one does that except with C strings

wanton carbon Mar 24, 2023, 10:54 AM

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i guess it can be used

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it is def not used here doe

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my guess is le code rott

wanton carbon Mar 24, 2023, 12:49 PM

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ok, i figured out the flow for fenced submits

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now the IB format

wanton carbon Mar 24, 2023, 4:13 PM

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TDR is achieve

wanton carbon Mar 24, 2023, 9:35 PM

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its great how many names they have misspelled in this single api

wanton carbon Mar 24, 2023, 11:36 PM

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hmmmmm, it seems like the device_coherent memories don't differ in creation from the incoherent ones 🤔 how does this work

midnight shore Mar 24, 2023, 11:46 PM

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wanton carbon its great how many names they have misspelled in this single api

wym

wanton carbon Mar 24, 2023, 11:50 PM

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_D3DKMT_QUERYSTATSTICS_REFERENCE_DMA_BUFFER

midnight shore Mar 24, 2023, 11:51 PM

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statstics

floral viper Mar 24, 2023, 11:51 PM

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mfw they took statstics in college

wanton carbon Mar 25, 2023, 3:27 PM

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by the power of baba and booey I have done it

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magnificient driver capable of running a single cmdcopybuffer

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https://tenor.com/yZ4I.gif

Tenor

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we will not enter the fact that i wasted hours on accidentally overwriting part of a CS with nop padding into the annals

wanton carbon Mar 25, 2023, 6:56 PM

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https://tenor.com/bA5nn.gif

Tenor

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~~weekend~~ compute

wanton carbon Mar 25, 2023, 10:34 PM

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tf

midnight shore Mar 25, 2023, 11:42 PM

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hololens

wanton carbon Mar 26, 2023, 2:37 PM

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el mao

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enum wraps to 32 bits on msvc C

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what a classic classic bug

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@onyx vector moment

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forgot to put type, still compiled

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C is the best

onyx vector Mar 26, 2023, 3:01 PM

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wanton carbon <@263681346872803331> moment

they see me unrollin'
they haltin'
visitin' and tryna catch me typing dirty
tryna catch me typing dirty

wanton carbon Mar 26, 2023, 3:37 PM

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jeez const variables are not constant values in C

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horriblu

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https://tenor.com/btWzI.gif

Tenor

midnight shore Mar 26, 2023, 3:40 PM

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:shocked:

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post it in the frog discord

wanton carbon Mar 26, 2023, 3:40 PM

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will i get immediate ban

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lol

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also i now know what acquirenextimage and queuepresent do and.. i didn't want to know

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i somehow thought these happen on the gpu 🐸

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clearly no mental model whatsoever

dark vortex Mar 26, 2023, 4:07 PM

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does rt work tho

wanton carbon Mar 26, 2023, 4:08 PM

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i don't see why it wouldn't 😛

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in fact Tear can finally into "hw"RT

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well i mean when this is usable

dark vortex Mar 26, 2023, 4:56 PM

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#855613452118130729 message inb4 windows deck

wanton carbon Mar 26, 2023, 4:58 PM

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🐸

wanton carbon Apr 8, 2023, 5:20 PM

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now lets see if the kmd interface is stable over updating the droiver

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https://tenor.com/FaXO.gif

Tenor

dark vortex Apr 8, 2023, 5:23 PM

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noice

wanton carbon Apr 8, 2023, 5:34 PM

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alright, lets get proper gpu side sync up (fortunately all the primitives seem to map to the same thing on the CP, so it shouldn't be that hard) + timeline semas

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then i can try running vuk examples

wanton carbon Apr 8, 2023, 6:05 PM

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if that works somewhat then CTS

wanton carbon Apr 8, 2023, 9:41 PM

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i wonder why wouldn't I just implement binary semas and fences on top of timeline semas 😈

wanton carbon Apr 8, 2023, 9:57 PM

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our boy RADV pumping them fraaaames

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staggering 44 FPS

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(debug build)

wanton carbon Apr 9, 2023, 6:28 AM

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@midnight shore can meson tell me what command line was used to make a build?

midnight shore Apr 9, 2023, 6:28 AM

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wanton carbon <@324651651224829952> can meson tell me what command line was used to make a bui...

do you mean you want to see list of commands during build (i.e. verbose mode) or..?

wanton carbon Apr 9, 2023, 6:29 AM

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i mean i have a dir i have configured

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can i ask meson what commandline i used to make it

midnight shore Apr 9, 2023, 6:33 AM

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uhh

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probably no

wanton carbon Apr 9, 2023, 6:35 AM

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ah there is

midnight shore Apr 9, 2023, 6:35 AM

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I don't know any options like that and there's nothing in build directory in meson-info or whatever that could be easily translated back to your command

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oh what is it

wanton carbon Apr 9, 2023, 6:35 AM

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meson-log.txt has

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Build started at 2023-04-08T17:59:15.413712
Main binary: C:\Program Files\Meson\meson.exe
Build Options: -Dgallium-drivers= -Dvulkan-drivers=amd -Dbuildtype=debug -Dllvm=disabled '-Dprefix=C:\mesa' -Dlibdir=lib64
Python system: Windows

midnight shore Apr 9, 2023, 6:35 AM

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cool

wanton carbon Apr 9, 2023, 6:35 AM

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which is exactly what i needed

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neato

wanton carbon Apr 9, 2023, 7:26 AM

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heheh, this is why the speed is nonexistent

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ahh probably because its reading from WC memory bleakekw

floral viper Apr 9, 2023, 7:32 AM

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goofy ahh wc mem

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(what's wc mem)

wanton carbon Apr 9, 2023, 7:33 AM

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ah maybe not

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write-combined memory

floral viper Apr 9, 2023, 7:34 AM

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ah(h)

wanton carbon Apr 9, 2023, 7:37 AM

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yeye, thats the issue

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maybe time to start honouring memory types

wanton carbon Apr 9, 2023, 7:37 AM

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floral viper ah(h)

did that clear it up or

floral viper Apr 9, 2023, 7:38 AM

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it did

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I also googled it and was surprised to see that there were actual results

wanton carbon Apr 9, 2023, 7:38 AM

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bas has two articles on it

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https://basnieuwenhuizen.nl/the-catastrophe-of-reading-from-vram/

The Catastrophe of Reading from VRAM

In this article I show how reading from VRAM can be a catastrophe for game performance and why.

floral viper Apr 9, 2023, 7:39 AM

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ye I know what wc memory is

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and in fact I even read that article

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it's just that I've never seen it abbreviated that way

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like ESO

wanton carbon Apr 9, 2023, 7:40 AM

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must've been jaker 1 who did

floral viper Apr 9, 2023, 7:40 AM

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and apparently my compiler's ability to unroll abbreviations is limited

wanton carbon Apr 9, 2023, 7:41 AM

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yeah, currently i am using intel's implementation of a software blit for presentation

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but uhh, thats catastrophically slow if the image is not in host_cached

wanton carbon Apr 9, 2023, 9:26 AM

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ok, my sus was correct

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still not fast, but acceptable i guess

wanton carbon Apr 9, 2023, 9:42 AM

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CTS time

floral viper Apr 9, 2023, 9:44 AM

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hey, I actually know that one

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"counter terrorist swin"

wanton carbon Apr 9, 2023, 9:45 AM

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https://tenor.com/bR3z4.gif

Tenor

dark vortex Apr 9, 2023, 9:47 AM

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rt cts when froge

wanton carbon Apr 9, 2023, 9:48 AM

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you tell me mr pixel

dark vortex Apr 9, 2023, 9:49 AM

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well they’re there and they should work (mostly)(on loonix that is, you tell me how it is on windows)

wanton carbon Apr 9, 2023, 9:49 AM

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lets see soon

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for now cpu cores going brr

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btw the cts will def fail as i have not implemented the compoot queue

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and i have already observed some sparkling corruption when using msaa KEKW

dark vortex Apr 9, 2023, 10:01 AM

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well if you don’t expose the compoot queue it should work

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RADV_DEBUG=nocompute

wanton carbon Apr 9, 2023, 10:19 AM

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hmm

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perhaps

wanton carbon Apr 9, 2023, 1:25 PM

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i think this cts test is boooged

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but its also device groups so eh

wanton carbon Apr 9, 2023, 2:15 PM

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i am questioning my life choices

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CTS is pain

wanton carbon Apr 9, 2023, 3:22 PM

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yus sparse binding is optional

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had to disable all the device group tests, I think they are broken

wanton carbon Apr 9, 2023, 3:55 PM

#

why is specifically this test failing to allocate memory?
ah right, thats the thing i put off implementing

dark vortex Apr 9, 2023, 3:56 PM

#

wanton carbon Apr 9, 2023, 7:09 PM

#

most conformant driver
All=229684 Crash=1 Fail=56754 NotSupported=160895 Pass=12032 QualityWarning=2

#

managed to render a cut down version of the xml

#

jebus how do people do this

#

probably gonna start running smaller bits

autumn notch Apr 9, 2023, 7:47 PM

#

christ almighty

midnight shore Apr 9, 2023, 8:06 PM

#

wanton carbon jebus how do people do this

--gtest_filter=...

wanton carbon Apr 9, 2023, 8:13 PM

#

where do i pass that?

wanton carbon Apr 10, 2023, 9:48 AM

#

mfw i ran cts for a good hour yesterday after losing the device around minute 5

wanton carbon Apr 10, 2023, 5:31 PM

#

test flakes between running fine and DEVICE_LOST

#

the two wolves inside of me

wanton carbon Apr 10, 2023, 6:03 PM

#

inshallah

#

(its still flaking)

wanton carbon Apr 11, 2023, 5:19 PM

#

metal 🤘

midnight shore Apr 11, 2023, 5:37 PM

#

wanton carbon metal 🤘

what's this

wanton carbon Apr 11, 2023, 5:37 PM

#

windbg

wanton carbon Apr 16, 2023, 7:22 PM

#

:frog_gone: martty's mesa misadventures

midnight shore Apr 16, 2023, 8:07 PM

#

what does frog_gone mean in this context

wanton carbon Apr 16, 2023, 8:08 PM

#

device lost

#

i just wanted a cool emoji in the title but discord said no

onyx vector Apr 18, 2023, 3:44 PM

#

wait

#

radv on windows??

wanton carbon Apr 18, 2023, 3:45 PM

#

bru

#

but yeah, getting there

onyx vector Apr 18, 2023, 3:46 PM

#

how though, isn't the kernel interface entirely alien

#

and why

#

and who's paying for it

wanton carbon Apr 18, 2023, 3:46 PM

#

you

wanton carbon Apr 18, 2023, 3:50 PM

#

onyx vector and why

idk why are you running bda on an ancient system

#

but there are some practical benefits if its starts working nicely

onyx vector Apr 18, 2023, 7:46 PM

#

wanton carbon idk why are you running bda on an ancient system

it's just what shady uses

#

the interface to it is designed arround passing data into the shader as-if it was some kind of vararg fn call

#

ideally culminating at some point with unified addressing/memory, but we're not there yet

wanton carbon Apr 18, 2023, 7:47 PM

#

you misunderstood my comment

onyx vector Apr 18, 2023, 7:47 PM

#

so the way I pass arguments to my kernels is I just yeet them into push constants (with spilling into an UBO mayhaps later)

#

indeed I did

#

but it seems like radv on windows is significantly more effort

#

i didn't think AMD would provide the relevant documentation, but I guess they do

wanton carbon Apr 18, 2023, 7:50 PM

#

they did not

#

apart from general knowledge of how amd gpus work

wanton carbon Apr 18, 2023, 7:59 PM

#

onyx vector but it seems like radv on windows is significantly more effort

but there is a very localized part of radv that talks to the kernel, so only that bits need to be written again

onyx vector Apr 18, 2023, 8:01 PM

#

wanton carbon you

what's your patreon

wanton carbon Apr 18, 2023, 8:04 PM

#

https://shorturl.at/ghivN this is my wallet link

floral viper Apr 18, 2023, 8:04 PM

#

url shortener

#

sussy link

wanton carbon Apr 18, 2023, 8:05 PM

#

don't be a sussy and click it

floral viper Apr 18, 2023, 8:05 PM

#

good wallet link frogapprove

dark vortex Apr 28, 2023, 3:29 PM

#

so how is radvindows going along

#

can't wait to tell r2d2 in the vk server that there is oss amd drivers for windows

wanton carbon Apr 28, 2023, 3:29 PM

#

oh no

dark vortex Apr 28, 2023, 3:29 PM

#

you're lucky it was a joke

wanton carbon Apr 28, 2023, 4:47 PM

#

dark vortex so how is radvindows going along

i haven't worked on it recently, it seems like large CSs lose the device

#

so i wanted to see what the submission looks like from amdvlk

dark vortex Jul 22, 2023, 9:07 PM

#

https://gitlab.freedesktop.org/tomstdenis/umr/-/merge_requests/30/diffs?commit_id=60b6dfcc62324f4a5f7911561842e3ca7635c3d2 huh interesting

#

radbg implementing this when frog_whip

wanton carbon Jul 22, 2023, 9:08 PM

#

gfx11
ah yes, the hw i definitely have

dark vortex Jul 22, 2023, 9:08 PM

#

it's not gfx11 specific

#

should work on gfx10+

wanton carbon Jul 22, 2023, 9:08 PM

#

but radbg does do single stepping

#

"radbg"

dark vortex Jul 22, 2023, 9:10 PM

#

this wouldn't require a trap handler at all

#

hm

#

maybe not, you just gotta get the waves to stop once

#

maybe raise an exception in some other way or something

wanton carbon Jul 22, 2023, 9:12 PM

#

the point of the trap handler is to support breakpoints

#

with the amount of concurrency a gpu has i think the trap handler makes a lot of sense

#

you don't want the host for selection between threads, there are too many

dark vortex Jul 22, 2023, 9:13 PM

#

fair yeah

wanton carbon Jul 22, 2023, 9:22 PM

#

the only thing needed is generous grant of time

wanton carbon Aug 5, 2023, 6:28 PM

#

ayuuh

#

an off-topic thing, but i started writing a tut

#

https://github.com/martty/martty.github.io/blob/main/_posts/2023-09-01-dango.md

GitHub

martty.github.io/_posts/2023-09-01-dango.md at main · martty/martty...

blargh. Contribute to martty/martty.github.io development by creating an account on GitHub.

#

this is the first half

#

if someone takes a read and sees how it works, let me know

autumn notch Aug 5, 2023, 8:09 PM

#

Grand Prone Ursine

#

Called Locutus

#

I cackled

#

Good read, a bit familiar since I am knowledgeable about this topic from birth but

floral viper Aug 5, 2023, 8:18 PM

#

wanton carbon https://github.com/martty/martty.github.io/blob/main/_posts/2023-09-01-dango.md

Top and bop KEKW

#

Oh that wasn't supposed to be a joke bleakekw

wanton carbon Aug 5, 2023, 8:28 PM

#

floral viper Top and bop <:KEKW:666849321462792234>

hanson is sponsoring the post

floral viper Aug 5, 2023, 8:29 PM

#

Anyways, nice post so far nice

wanton carbon Aug 21, 2023, 6:05 PM

#

@midnight shore here

midnight shore Aug 21, 2023, 6:09 PM

#

at first glance, I really like the diagrams, they really convey what happens, but the analogies are uh

wanton carbon Aug 21, 2023, 6:09 PM

#

delicious

midnight shore Aug 21, 2023, 6:10 PM

#

Within a single drawcall, each stage can also finish out-of-order (remember that passing over a work item doesn't mean it is done).
However there is a guarantee that dependent work is correctly ordered: the GPU will not execute a fragment shader which depends on a vertex shader that has not yet been completed.

#

huh?

#

I guess you mean that stages within a draw can overlap in time

#

but that's not what comes to my mind when I read the bit I quoted

#

ok well

#

yeah nevermind

wanton carbon Aug 21, 2023, 6:11 PM

#

yeah its uh, weird

#

should reword it

midnight shore Aug 21, 2023, 6:12 PM

#

perhaps you could try not using "finish out of order" in any context at all

#

like just say that draw calls that were started execute concurrently or something

#

and that stages within a single draw call also execute concurrently

wanton carbon Aug 21, 2023, 6:13 PM

#

yes

wanton carbon Aug 21, 2023, 6:17 PM

#

midnight shore at first glance, I really like the diagrams, they really convey what happens, bu...

there is a bit of fun in there, i think its not super distracting

midnight shore Aug 21, 2023, 6:18 PM

#

yeah I didn't read it at normal pace so maybe it's fine

wanton carbon Aug 21, 2023, 6:18 PM

#

i can tone it up or down ofc

midnight shore Aug 21, 2023, 6:18 PM

#

well I said "uh" because I wasn't sure about it

#

I'm not saying it's over the top

#

I'll re-read at normal pace once shrotly

#

We now ramp up the difficulty. We introduce a new draw (#5), but this time, we will have a logical depency between between the vertex shader of this draw and the fragment shader of draw #4.

wanton carbon Aug 21, 2023, 6:21 PM

#

wy us lot lttrs wh fw lttrs do trk

midnight shore Aug 21, 2023, 6:27 PM

#

looks good overall I think (I have not yet read at normal pace)

#

what I think you could experiment with

#

if you are willing to spend time and/or force someone else to spend time for you

#

there are lots of diagrams that change relatively little from one to another

#

so I'd explore replacing them with an animated svg/css/js/whatever thing

#

and perhaps instead of queue being just a line with things branching off it, you could also say "vkCmdDraw" at each branch point, changing color of each one as that draw is started

#

and perhaps transpose the entire diagram (so queue flows top to bottom, and stages run left to right) but that's a very minor thing

#

I'd also try to use greater distance between hues in your stage pallette

#

because vs and fs look kinda close

#

in terms of color

#

specifically when you look at barrier/feeder control rules

wanton carbon Aug 21, 2023, 6:47 PM

#

midnight shore if you are willing to spend time and/or force someone else to spend time for you

are you volunteering 😳

midnight shore Aug 21, 2023, 6:48 PM

#

wanton carbon are you volunteering 😳

no, I don't actually know how to make animated svgs or such

wanton carbon Aug 21, 2023, 6:48 PM

#

anyways, good feedback, thanks

midnight shore Aug 21, 2023, 6:48 PM

#

but I've seen some on wikipedia

wanton carbon Aug 21, 2023, 6:48 PM

#

midnight shore so I'd explore replacing them with an animated svg/css/js/whatever thing

but do you mean just animation between successive states

#

not a single big video

#

cause i can see that being nice

midnight shore Aug 21, 2023, 6:49 PM

#

wanton carbon but do you mean just animation between successive states

yeah

#

so that you could explore transitions more easily

#

I think the way you depict diagrams is really good, it's really not overwhelming the reader with details

#

actually

midnight shore Aug 21, 2023, 6:51 PM

#

midnight shore and perhaps transpose the entire diagram (so queue flows top to bottom, and stag...

actually probably ignore this

#

as it is now, flowing from left to right is good

#

and to fit labels like vkCmdDraw on top you could just rotate them 60 degrees or smth

wanton carbon Aug 21, 2023, 6:53 PM

#

yeah that sounds neat

wanton carbon Aug 21, 2023, 6:55 PM

#

midnight shore I think the way you depict diagrams is really good, it's really not overwhelming...

thanks! thats great to hear

midnight shore Aug 21, 2023, 6:55 PM

#

err

#

I meant diagrams

#

not analogies

#

like that queue and stages stuff

wanton carbon Aug 21, 2023, 6:55 PM

#

still great

autumn notch Aug 21, 2023, 6:56 PM

#

they kinda go hand in hand

wanton carbon Aug 21, 2023, 6:56 PM

#

i think nano is just a fan of monsieur GPU

autumn notch Aug 21, 2023, 6:56 PM

#

dango stands for

D
A
N
G
O

midnight shore Aug 21, 2023, 7:01 PM

#

maybe you could somehow make stages flow to the right too, hmm...

wanton carbon Aug 21, 2023, 7:01 PM

#

that is intentional i guess

midnight shore Aug 21, 2023, 7:01 PM

#

no I mean the current one is good

#

it's like

wanton carbon Aug 21, 2023, 7:02 PM

#

important to not ascribe too much temporality to concurrent things

midnight shore Aug 21, 2023, 7:02 PM

#

yeah

#

it's at a point where if you add more detail it just becomes cluttered and overwhelming

#

yea nevermind

autumn notch Aug 21, 2023, 7:02 PM

#

I guess dango stands for "DANG, nObody kekwd"

#

also ye I think the diagrams are really readable rn

midnight shore Aug 21, 2023, 7:03 PM

#

also imo you should explicitly spell out the technical names for each analogy name you introduce

#

e.g. feeder doesn't have a technical googlable term in the article (I guess you could use "command processor"?)

wanton carbon Aug 21, 2023, 7:04 PM

#

well, but it isn't really the command processor

#

its a bit like that

midnight shore Aug 21, 2023, 7:04 PM

#

yeah well I guess as it is, it's fine too

wanton carbon Aug 21, 2023, 7:04 PM

#

the main queue one is I guess on AMD

#

but it is definitely something that should be elaborated

#

how to map the mental model to API and GPU things

#

but haven't written that yet

#

unfortunately i only have the boring cache model to explain memory deps

autumn notch Aug 21, 2023, 7:09 PM

#

I'm sure you can come up with a convoluted story about a pirate and a wizard or something

wanton carbon Aug 21, 2023, 7:10 PM

#

yes, but i don't want to add it if it doesn't help

autumn notch Aug 21, 2023, 7:10 PM

#

Aye

#

Only thing it would help with is the dwindling attention span of the internet's population

wanton carbon Aug 21, 2023, 7:11 PM

#

u r right

#

i'll just add a temple run video that scrolls with the page

autumn notch Aug 21, 2023, 7:20 PM

#

excellent

wanton carbon Oct 30, 2023, 1:58 PM

#

i wonder if amd pulling the plug on polaris and vega spells radw

dark vortex Oct 30, 2023, 2:37 PM

#

do it frog_whip

#

actually I just installed windows too 👀

#

perhaps one day where I have too much free time I shall Take A Look™️

wanton carbon Oct 30, 2023, 2:38 PM

#

cue spongebob time card

#

would be fun to work on it more tho

dark vortex Oct 30, 2023, 2:40 PM

#

ye

#

since i totally haven't just nerdsniped myself how do you figure out the native kmd interface thingy

wanton carbon Oct 30, 2023, 2:42 PM

#

well you write a vulkan program

#

then you trace the calls

#

it calls into the kernel via the d3dkmt interface

#

then you can dump the arguments

dark vortex Oct 30, 2023, 2:44 PM

#

what you do for call tracing would've been my question here

wanton carbon Oct 30, 2023, 2:44 PM

#

windbg

#

but i kinda wanted to make sth nicer on that front

#

i did the dumping just using vs's debugger

#

but thats not ergonomic

dark vortex Oct 30, 2023, 2:50 PM

#

ic

#

i've actually become really rusty in doing schtuffs in windows I notice

#

(or maybe I wasn't particularly great in debugging-fu ever before I switched to linux, that's also an option KEKW )

dark vortex Oct 30, 2023, 2:54 PM

#

wanton carbon would be fun to work on it more tho

btw does that spell "i will probably go back to it soon" or "i wish I could go back to it soon but it ain't happenin"

wanton carbon Oct 30, 2023, 3:01 PM

#

yea

dark vortex Oct 30, 2023, 3:01 PM

#

frogapprove

wanton carbon Oct 30, 2023, 4:34 PM

#

but let me know if you wanna hacc on it together or sumfin

dark vortex Oct 30, 2023, 4:37 PM

#

sure

#

(i am letting you know)

wanton carbon Oct 30, 2023, 4:40 PM

#

😳

dark vortex Oct 30, 2023, 4:48 PM

#

need to set up all the windows toolchain stuffs but I might get to that later this evening

wanton carbon Oct 30, 2023, 4:49 PM

#

sounds good

#

if you can gompile mesa should be good

dark vortex Oct 30, 2023, 4:49 PM

#

ye

#

you just disable llvm right? 🐸

wanton carbon Oct 30, 2023, 5:01 PM

#

ye

wanton carbon Oct 30, 2023, 5:03 PM

#

wanton carbon > Build started at 2023-04-08T17:59:15.413712 > Main binary: C:\Program Files\Me...

^

dark vortex Oct 30, 2023, 5:04 PM

#

ok nice

wanton carbon Oct 30, 2023, 5:06 PM

#

oh best part is

#

you also have the 6700xt

#

therefore 100% coverage with a single effort

dark vortex Oct 30, 2023, 5:08 PM

#

ok gonna start setting things up
(otherwise I’d need to debug rgp segfaulting on a random capture and I don’t really want to do that right now)

dark vortex Oct 30, 2023, 7:17 PM

#

i may or may not have fallen off a few tangents

wanton carbon Oct 30, 2023, 7:17 PM

#

story of me life

dark vortex Oct 30, 2023, 7:18 PM

#

(i am stuck in a 640x480 windows update screen badly upscaled to 4k)

wanton carbon Oct 30, 2023, 7:19 PM

#

i am getting an aneurysm from reading #engine-dev

dark vortex Oct 30, 2023, 7:20 PM

#

splendid

dark vortex Oct 30, 2023, 7:56 PM

#

hnnnng forgot glslangValidator

#

though installing vulkan sdk will be benefishial in general

#

after that I should have it I think

wanton carbon Oct 30, 2023, 8:01 PM

#

sweet

dark vortex Oct 30, 2023, 8:02 PM

#

i installed python 3.12, which removed distutils, which meson still uses

#

what the actual fuck

#

i installed python 3.11 now but when I execute python in cmd it launches a windows store instance with the python page

wanton carbon Oct 30, 2023, 8:07 PM

#

ah

#

yes

#

that is fun

#

i think the best way is using pyenv

dark vortex Oct 30, 2023, 8:13 PM

#

yeah nice, that worked

#

ok, meson setup went through this time

#

ah, they messed up the dxheaders dep, splendid

#

well "messed up" lol

#

it needs massaging to build radv on main

#

========== Build: 77 succeeded, 0 failed, 6 up-to-date, 4 skipped ==========
========== Build started at 20:24 and took 16,528 seconds ==========
```splendid

wanton carbon Oct 30, 2023, 8:27 PM

#

schplendid

#

ye i had to fix some stuff

#

you can use my branch

dark vortex Oct 30, 2023, 8:28 PM

#

already fetching

#

ok built

wanton carbon Oct 30, 2023, 8:32 PM

#

like a brick shithouse

#

next is making vulkaninfo pick it up

#

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\Vulkan\Drivers

#

put a key in here

#

at least thats what I did

dark vortex Oct 30, 2023, 8:34 PM

#

oh i just set VK_DRIVER_FILES

#

that worked for me

#

it doesn't seem to find any devices tho

wanton carbon Oct 30, 2023, 8:35 PM

#

wdym?

dark vortex Oct 30, 2023, 8:35 PM

#

well vulkaninfo outputs nothing

#

hmm maybe it crashes, isn't it supposed to print an error

wanton carbon Oct 30, 2023, 8:37 PM

#

with my branch?

dark vortex Oct 30, 2023, 8:39 PM

#

yes

#

trying to figure out how I can get the vs debugger to launch random exes instead of random project names

wanton carbon Oct 30, 2023, 8:41 PM

#

you can just drag the exe onto the vs window

dark vortex Oct 30, 2023, 8:44 PM

#

ah, it needs device->ws->query_value implemented

#

stub incoming

#

btw how do we want to do collaboration stuff (as in merging changes etc)

#

i do merge requests to your branch?

wanton carbon Oct 30, 2023, 8:45 PM

#

i can give you push rights?

#

we just pinky promise not to force push until its time to clean up

dark vortex Oct 30, 2023, 8:47 PM

#

also works for me

wanton carbon Oct 30, 2023, 8:48 PM

#

inviteth

dark vortex Oct 30, 2023, 8:51 PM

#

thanks

#

ima push the the query_value stub right away

#

it do be fixin vulkaninfo

wanton carbon Oct 30, 2023, 8:52 PM

#

fixin' for a fix

dark vortex Oct 30, 2023, 8:54 PM

#

vkcube do be runnin too

wanton carbon Oct 30, 2023, 8:55 PM

#

on the radw?

dark vortex Oct 30, 2023, 8:55 PM

#

yes

wanton carbon Oct 30, 2023, 8:55 PM

#

pogue

#

(as the kids say)

dark vortex Oct 30, 2023, 8:55 PM

#

heh

wanton carbon Oct 30, 2023, 8:55 PM

#

so where i got to was

#

cts has a big submit that just loses the device

#

also I think some things don't really work

#

like MSAA

dark vortex Oct 30, 2023, 8:56 PM

#

hm msaa is a weird one

wanton carbon Oct 30, 2023, 8:56 PM

#

but i am happy that they didn't muck up the kmd interface

dark vortex Oct 30, 2023, 8:56 PM

#

don't think you'd depend on lots of kernel stuff there

wanton carbon Oct 30, 2023, 8:57 PM

#

so

#

there is some part of amdgpu that i kind of just copied out

#

might need a second look if i got it right

#

if i didn't it might explain things

dark vortex Oct 30, 2023, 8:58 PM

#

wanton carbon cts has a big submit that just loses the device

which test is this?

#

might be worth looking into d3dkmt interface dumping on the prop drivers with that test

#

do you have some pointers on how to do the do with dumping call params with windbg

wanton carbon Oct 30, 2023, 9:00 PM

#

ye, it would be worth

dark vortex Oct 30, 2023, 9:00 PM

#

been a long time since I used the thing

wanton carbon Oct 30, 2023, 9:00 PM

#

not sure tbh

wanton carbon Oct 30, 2023, 9:00 PM

#

dark vortex which test is this?

let me attempt to rake my brain

#

i used windbg to trace, not for the dump

#

but i imagine i would do the following

#

which is what i do by hand

#

bp at win32u!...D3DKMT call... -> when bp is hit, put bp on a frame above on the call -> RCX is the pointer to the struct taken by the call

wanton carbon Oct 30, 2023, 9:05 PM

#

dark vortex which test is this?

do you recall where the list is?

dark vortex Oct 30, 2023, 9:05 PM

#

wdym the list? list of all tests?

wanton carbon Oct 30, 2023, 9:06 PM

#

dEQP-VK.api.command_buffers.record_many_draws

#

found it

#

this has some variants

#

not sure which one was the deadly

dark vortex Oct 30, 2023, 9:12 PM

#

bleh

#

did you also encounter

CMake Error at C:/Program Files/CMake/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find Python3 (missing: Python3_EXECUTABLE Interpreter)

      Reason given by package:
          Interpreter: Cannot use the interpreter "C:/Users/fried/.pyenv/pyenv-win/shims/python"

#

also i love how windows gives me "fried" as username, thank you windows for letting me choose this would definitely have been my choice

wanton carbon Oct 30, 2023, 9:13 PM

#

classic deepfried richard

#

uhhh

wanton carbon Oct 30, 2023, 9:14 PM

#

dark vortex did you also encounter ``` CMake Error at C:/Program Files/CMake/share/cmake-3.2...

wtf

dark vortex Oct 30, 2023, 9:15 PM

#

wtf indeed

#

especially if you consider this earlier message
Found PythonInterp: C:/Users/fried/.pyenv/pyenv-win/shims/python3 (Required is at least version "3")

#

great

#

there's about 5 reasons this message can appear

#

there is no way to distinguish between any of these 5 reasons

wanton carbon Oct 30, 2023, 9:29 PM

#

splendid

dark vortex Oct 30, 2023, 9:31 PM

#

ah I think it just straight up cannot handle softlinks

#

i'll just try the stupid windows store thing

#

oh my fucking god my parents got a notification because I downloaded something from the windows store

#

jesus fucking christ

floral viper Oct 30, 2023, 9:37 PM

#

why does your install have parental controls lmao

dark vortex Oct 30, 2023, 9:38 PM

#

it was never removed since I was 14 lmao

#

oh fuck I think I have 20 minutes left

floral viper Oct 30, 2023, 9:38 PM

#

I thought you freshly installed windows or something

#

anyways, I mustn't waste your precious time

dark vortex Oct 30, 2023, 9:39 PM

#

yes but through association with my account (because fresh installs aren't possible without signing in anymore, congratulations for choosing win11) the parental controls demons have been awoken from their slumber once more

floral viper Oct 30, 2023, 9:39 PM

#

ebic

dark vortex Oct 30, 2023, 9:45 PM

#

more cts build failures

#

froge_bleak

#

oh stale cmake cache

#

what will happen sooner, cts build finishes or parental controls cut off my access or my dad disables the parental controls

#

funny, didn't want to waste ssd space with windows

#

now spinning rust is the bottleneck on builds

wanton carbon Oct 30, 2023, 9:59 PM

#

rust ruins the day yet again

dark vortex Oct 30, 2023, 9:59 PM

#

dark vortex what will happen sooner, cts build finishes or parental controls cut off my acce...

the answer is cts build

#

dEQP-VK.api.command_buffers.record_many_draws_primary_2 repros the issue

wanton carbon Oct 30, 2023, 10:06 PM

#

nice

#

then we arrive on the same page

dark vortex Oct 30, 2023, 10:10 PM

#

hmmm

#

trying to break all d3dkmt functions only yields some in gdi32

#

namely D3DKMTOpenAdapterFromHdc and D3DKMTOpenAdapterFromGdiDisplayName

wanton carbon Oct 30, 2023, 10:11 PM

#

its not called that

#

hold on

#

they look like this

#

d3dkmt is the userland name, but this one is the kernel one or something

#

win32u!NtGdiDdDDISubmitCommand is the submit for ex

dark vortex Oct 30, 2023, 10:13 PM

#

ah yes

#

those are a few more

#

hackerman voice I'm in

#

right as the music beatdrops hard, this is peak programming

#

g

#

ops

#

this is not the debugger window

wanton carbon Oct 30, 2023, 10:14 PM

#

i haven't begun to peak myself

dark vortex Oct 30, 2023, 10:18 PM

#

you said the parameter structs are the same between the D3DKMT and the NtGdiDdDDI functions?

wanton carbon Oct 30, 2023, 10:18 PM

#

yes

#

so for the submit RCX (in the right frame) is D3DKMT_SUBMITCOMMAND*

dark vortex Oct 30, 2023, 10:20 PM

#

oh right one frame above

wanton carbon Oct 30, 2023, 10:22 PM

#

ye

dark vortex Oct 30, 2023, 10:22 PM

#

just trying to find my way around the very first QueryAdapterInfo call

#

it's the same value in both frames so /shrug

wanton carbon Oct 30, 2023, 10:24 PM

#

hmm?

#

so what i found that worked was that i moved the bp into the caller, on the call

#

this way rcx is not clobbered

#

it may be that you can find it in the ntgdi* frame too, but i didn't look enough

dark vortex Oct 30, 2023, 10:26 PM

#

not sure what you mean, I just looked at .frame /r 1 to determine the registers of the caller frame, and shrimply r to determine current frame regs

#

both turn out to the same value, rcx=00000009ca4fdc98

wanton carbon Oct 30, 2023, 10:27 PM

#

if it works it works

#

and does it seem to be a pointer of expectation

dark vortex Oct 30, 2023, 10:27 PM

#

might be a special case tho

wanton carbon Oct 30, 2023, 10:27 PM

#

but also

#

so the rcx is not preserved from the calling frame

#

regs are not like variables when using the debugger

dark vortex Oct 30, 2023, 10:28 PM

#

I know

wanton carbon Oct 30, 2023, 10:28 PM

#

i thought you'd know 😛

dark vortex Oct 30, 2023, 10:28 PM

#

hence I'm still a bit confused what switching frames actually achieves here

wanton carbon Oct 30, 2023, 10:30 PM

#

so thats not what i did

#

i put a breakpoint on the caller

#

which will be hit next time

#

with a good rcx

dark vortex Oct 30, 2023, 10:30 PM

#

aaah I see

#

so in the backtrace I choose the RetAddr of frame 0 or of frame 1 thonk

#

as in does the RetAddr of frame 0 belong to the next instruction in frame 1 (in which case I'd probably want to break on the one of frame 0)

wanton carbon Oct 30, 2023, 10:37 PM

#

uhh

dark vortex Oct 30, 2023, 10:37 PM

#

(it seems that yes it does)

wanton carbon Oct 30, 2023, 10:38 PM

#

good

floral viper Oct 30, 2023, 10:39 PM

#

what is going on here

wanton carbon Oct 30, 2023, 10:41 PM

#

uhh

#

a milkshake

dark vortex Oct 30, 2023, 10:42 PM

#

hmm actually

#

I probably don't want to break at the return address of the NtGdi function

#

that gives me absolutely nothing because rcx has already been clobbered (since that is right after the NtGdi function executes)

#

me is very confuse

#

it is definitely not late or anything

wanton carbon Oct 30, 2023, 10:44 PM

#

me going clobbin' with the boys

dark vortex Oct 30, 2023, 10:44 PM

#

so, when you say you break at the caller, you probably want to break before the function that ends up calling NtGdi* is called, right

#

(the call conv does not say to preserve rcx or does it)

wanton carbon Oct 30, 2023, 10:44 PM

#

ye before

#

on the call

dark vortex Oct 30, 2023, 10:45 PM

#

uuuh do you remember what that was in windbg commands

wanton carbon Oct 30, 2023, 10:45 PM

#

i mean its a syscall kinda thang

#

just go one frame up and look for the call? break there?

dark vortex Oct 30, 2023, 10:46 PM

#

righto

wanton carbon Oct 30, 2023, 10:46 PM

#

sorry, didn't do this bit with windbg

dark vortex Oct 30, 2023, 10:47 PM

#

what did you do it with, vs debugger?

wanton carbon Oct 30, 2023, 10:48 PM

#

ye

dark vortex Oct 30, 2023, 10:57 PM

#

hm

#

still not sure if I got the right data, looks weird

#

am now right at the start of the function that calls NtGdi* stuff

wanton carbon Oct 30, 2023, 11:00 PM

#

the call will look like this

#

call rdx

dark vortex Oct 30, 2023, 11:01 PM

#

none of the calls in my stack (up to NtGdiDdDDISubmitCommand) look like that

#

perhaps compiler switcherood some things

#

ah ye I think I see it

#

so I'm supposed to break on exactly that call?

wanton carbon Oct 30, 2023, 11:03 PM

#

i think things changed

#

amd switched to a dxgi swapchain now

#

well well well

dark vortex Oct 30, 2023, 11:04 PM

#

oh well

#

hmm, other idea

#

since we can call D3DKMTSubmitCommand ourselves we should be able to obtain the location of that as a module offset (which I presume is some random place in their proprietary kmd shim stuff if I understand the driver stack correctly?)

#

we can break on that too, and then we should always have the actual D3DKMT struct without callstack traversal magic

wanton carbon Oct 30, 2023, 11:07 PM

#

this is how it looks like in my driver atm

#

this is just one up from the NtGdiDdDDISubmitCommand

#

and i checked now that rcx is the correct ptr

dark vortex Oct 30, 2023, 11:08 PM

#

one up from NtGdiDdDDISubmitCommand is

00007ffe`56885be7 498b86d0000000  mov     rax,qword ptr [r14+0D0h]
00007ffe`56885bee 4c8ba890d30000  mov     r13,qword ptr [rax+0D390h]
00007ffe`56885bf5 4d8ba5a8090000  mov     r12,qword ptr [r13+9A8h]
00007ffe`56885bfc 498b842458220000 mov     rax,qword ptr [r12+2258h]
00007ffe`56885c04 488d8d20010000  lea     rcx,[rbp+120h]
00007ffe`56885c0b ffd0            call    rax

wanton carbon Oct 30, 2023, 11:08 PM

#

weird

#

but for me the rcx is correct now in NtGdiDdDDISubmitCommand too

dark vortex Oct 30, 2023, 11:09 PM

#

yeah i just noticed actually

#

i think the one i have makes a lot of sense too

#

the rcx I had before that was from a NtGdiDdDDISubmitCommand call from inside CreateDevice

wanton carbon Oct 30, 2023, 11:10 PM

#

ahhh

dark vortex Oct 30, 2023, 11:10 PM

#

maybe that had some weird stuff in it or something

wanton carbon Oct 30, 2023, 11:10 PM

#

ye

dark vortex Oct 30, 2023, 11:21 PM

#

so uh, how do you calculate the driver private data size when submitting stuff

#

or rather what is is based on

wanton carbon Oct 30, 2023, 11:21 PM

#

private data is the secret bit

dark vortex Oct 30, 2023, 11:22 PM

#

yeah

wanton carbon Oct 30, 2023, 11:22 PM

#

you can look at what radw does, but honestly i didn't manage yet to decode what is in there

dark vortex Oct 30, 2023, 11:23 PM

#

radw does some weird calculations on constants

#

the result is quite drastically different from what the prop driver gives tho

wanton carbon Oct 30, 2023, 11:23 PM

#

yes

#

it seems like there are sort of chunks passed there

dark vortex Oct 30, 2023, 11:25 PM

#

ye

wanton carbon Oct 30, 2023, 11:27 PM

#

so ye, next step: figure out what those are ig

#

maybe with an intermediate step of making a dumper for the privatedata

dark vortex Oct 30, 2023, 11:28 PM

#

well for today, I'll just try to properly decode the submit struct (and try to reconcile the private data with what you found out) (seems there are multiple chunks frog_detective ) and then I think I'll go do the eep

wanton carbon Oct 30, 2023, 11:28 PM

#

nice

#

i'll do the eep rn

#

lmk if you sleuth out something fun

dark vortex Oct 30, 2023, 11:29 PM

#

yup

#

yeah if I had to guess it's pretty much just the IBs referenced by that submit, I think the unknown thingy might be some speshul flags thingy

#

bit random but I think tomorrow I'll try getting RADV_DEBUG=hang to work, perhaps it can help figure out where things go wrong

#

fwiw this is what I got out of that submit

📎 submitdump.txt

wanton carbon Oct 31, 2023, 6:38 AM

#

ye that was my reversing as well

#

https://github.com/kkent030315/EvilHooker maybe this could help and it is also named well

GitHub

GitHub - kkent030315/EvilHooker: Function hooks in Windows NT Kernel

Function hooks in Windows NT Kernel. Contribute to kkent030315/EvilHooker development by creating an account on GitHub.

floral viper Oct 31, 2023, 6:51 AM

#

Well explained concept is here

#

What are you guys doing to the kernel

wanton carbon Oct 31, 2023, 6:57 AM

#

nice try lisa

#

its just to automate dumping d3dkmt calls

floral viper Oct 31, 2023, 6:58 AM

#

My phone actually wanted to autocorrect "kernel" to "Jensen" agonyfrog

#

Why do you want to dump d3dkmt calls

#

Explain like I have a bachelor's in computer science

wanton carbon Oct 31, 2023, 7:04 AM

#

graphics drivers have two parts, the user mode driver (umd) and the kernel mode driver (kmd)

#

in a somewhat weird way, even though the kmds are bespoke, they still kind of expose a sort-of-ish unified interface

#

in loonix this is the libdrm

#

on windows this is a bit more complex

#

but there is a direct interface which is the d3dkmt

#

dx12/dxgi goes through a different path

#

but anyways, so what the vulkan amd umd driver does is talk to the kmd, via the d3dkmt interace

#

we have an existing umd, radv

#

it needs to be taught how to talk to the windows kmd

#

(this is called the 'winsys')

#

so we are looking at the amd umd driver comms

#

@floral viper was that good for ELIHABICS?

floral viper Oct 31, 2023, 7:21 AM

#

It was, ty frogeheart

#

One of u should get a job at AMD so you can look at the code yourself

#

Alternatively, you can try requesting access

wanton carbon Oct 31, 2023, 7:22 AM

#

but then you can't write the code yourself

#

i believe people have repeatedly asked AMD to document these bits

#

but they did not

#

so

floral viper Oct 31, 2023, 7:22 AM

#

Welp

#

How many other blockers are there to get radv running on Windows

wanton carbon Oct 31, 2023, 7:24 AM

#

it is already running for a very limited definition of running

floral viper Oct 31, 2023, 7:24 AM

#

Let's say uh hello triangle

wanton carbon Oct 31, 2023, 7:24 AM

#

wanton carbon

^

floral viper Oct 31, 2023, 7:25 AM

#

Let's say uh passing the entire Vulkan cts

wanton carbon Oct 31, 2023, 7:26 AM

#

that went 0-100 very fast

floral viper Oct 31, 2023, 7:26 AM

#

Where are we right now

#

I saw a spinning cube even

wanton carbon Oct 31, 2023, 7:27 AM

#

ye

#

current issue is that big submits fail bc we didn't figure out all the bits on the submit (probably)

#

then there will be an issue of having to port some of device stuff from the linux kmd or reversing device init

floral viper Oct 31, 2023, 7:28 AM

#

How big is big

wanton carbon Oct 31, 2023, 7:28 AM

#

don't recall, its one of the cts tests

#

then there will be some smaller bits that might require more massaging, like idk sparse and other randos

floral viper Oct 31, 2023, 7:29 AM

#

sounds good

#

how do I build radv on Windows

#

half joking because I won't be at my PC for a few days (at an ISV visit)

wanton carbon Oct 31, 2023, 7:31 AM

#

are you at geryu's

floral viper Oct 31, 2023, 7:31 AM

#

I am farther north

wanton carbon Oct 31, 2023, 7:31 AM

#

floral viper how do I build radv on Windows

i have a mesa fork, and then its reasonably straightforward

floral viper Oct 31, 2023, 7:32 AM

#

What does this fork add? The bits that make it worky on Windows?

wanton carbon Oct 31, 2023, 7:33 AM

#

yea

#

you can already build mesa on windows

#

and radv, but its not superbly functional

floral viper Oct 31, 2023, 7:37 AM

#

Me irl

wanton carbon Oct 31, 2023, 7:48 AM

#

floral viper Me irl

i will leave this explain with a meme, as customary

floral viper Oct 31, 2023, 7:48 AM

#

*this rad boy

wanton carbon Oct 31, 2023, 10:42 PM

#

@dark vortex am prepping sth nice

dark vortex Oct 31, 2023, 11:14 PM

#

noice

#

didn't get around to do a lot today

#

watched some halloween (the series) movies instead

wanton carbon Oct 31, 2023, 11:24 PM

#

also nice

#

let me put this code up somewhere

#

so you can revel

#

inv sent

#

may weep (in private)

#

NEW CHUNK
0 - 1e0

PKT3_DMA_DATA ENGINE_SEL(1) SRC_CACHE_POLICY(0) DST_SEL(2) DST_CACHE_POLICY(0) SRC_SEL(3) CP_SYNC(0) SRC_ADDR_LO_OR_DATA(580000) SRC_ADDR_HI(3) DST_ADDR_LO(0) DST_ADDR_HI(0) BYTE_COUNT(1e0) DIS_WC(0) SAS(0) DAS(0) SAIC(0) DAIC(0) RAW_WAIT(0)
PKT3_EVENT_WRITE EVENT_TYPE(19) EVENT_INDEX(0)
PKT3_SET_CONTEXT_REG gfx1030.mmDB_RENDER_OVERRIDE(0)
PKT3_SET_CONTEXT_REG gfx1030.mmPA_SC_AA_CONFIG(0)
PKT3_SET_CONTEXT_REG gfx1030.mmVGT_TESS_DISTRIBUTION(d8181e0c)
PKT3_SET_CONTEXT_REG gfx1030.mmPA_SC_CONSERVATIVE_RASTERIZATION_CNTL(100000)
PKT3_SET_CONTEXT_REG gfx1030.mmVGT_LS_HS_CONFIG(0)
PKT3_SET_CONTEXT_REG gfx1030.mmPA_SC_BINNER_CNTL_0(19fc00a3) gfx1030.mmPA_SC_BINNER_CNTL_1(3ff0000)
PKT3_SET_CONTEXT_REG gfx1030.mmPA_SC_SCREEN_SCISSOR_TL(0) gfx1030.mmPA_SC_SCREEN_SCISSOR_BR(40004000)
PKT3_SET_CONTEXT_REG gfx1030.mmDB_DFSM_CONTROL(2)
PKT3_WRITE_DATA PFP(1) WR_CONFIRM(1) WR_ONE_ADDR(0) memory async(5) DST_ADDR_LO(1b0010) DST_ADDR_HI(1)
PKT3_SET_CONTEXT_REG gfx1030.mmTA_BC_BASE_ADDR(3002810) gfx1030.mmTA_BC_BASE_ADDR_HI(0)
PKT3_SET_CONTEXT_REG gfx1030.mmPA_SU_POINT_SIZE(80008) gfx1030.mmPA_SU_POINT_MINMAX(ffff0000) gfx1030.mmPA_SU_LINE_CNTL(8)
PKT3_SET_CONTEXT_REG gfx1030.mmDB_STENCILREFMASK(1ffff00) gfx1030.mmDB_STENCILREFMASK_BF(1ffff00)
PKT3_SET_CONTEXT_REG gfx1030.mmDB_DEPTH_BOUNDS_MIN(0) gfx1030.mmDB_DEPTH_BOUNDS_MAX(3f800000)
PKT3_SET_CONTEXT_REG gfx1030.mmPA_SC_WINDOW_SCISSOR_TL(80000000) gfx1030.mmPA_SC_WINDOW_SCISSOR_BR(40004000)

#

i set up dumping of IBs

#

and decoding

#

i detoured the d3dkmt stuff so we can bookkeep

#

its p nifty

dark vortex Oct 31, 2023, 11:50 PM

#

oi nice

wanton carbon Nov 1, 2023, 8:20 AM

#

gfx1030.mmPA_SU_POINT_MINMAX(ffff0000)

will these be renamed if you change ceo @floral viper

floral viper Nov 1, 2023, 8:21 AM

#

That naming looks fine

dark vortex Nov 1, 2023, 11:35 AM

#

alternate timeline: jensen huang, ceo of amd, introduces PA_HUANG_POINT_MINMAX registers

#

ok now with a bit more eep let's take a look with them noice tools

#

https://tenor.com/view/but-heres-the-sleeper-cat-gif-26608526

Tenor

#

did git just sarcastically clone this repo

dark vortex Nov 1, 2023, 11:50 AM

#

wanton carbon ```c NEW CHUNK 0 - 1e0 PKT3_DMA_DATA ENGINE_SEL(1) SRC_CACHE_POLICY(0) DST_SEL(...

do you have anything against printing the reg fields on separate lines like so

PKT3_ACQUIRE_MEM
        ME(1)
        COHER_CNTL(0)
        CP_COHER_SIZE(ffffffff)
        CP_COHER_SIZE_HI(ff)
        CP_COHER_BASE(0)
        CP_COHER_BASE_HI(0)
        POLL_INTERVAL(a)
PKT3_EVENT_WRITE
        EVENT_TYPE(f)
        EVENT_INDEX(4)
PKT3_EVENT_WRITE
        EVENT_TYPE(24)
        EVENT_INDEX(0)

#

esp with lots of fields I think it's moar readable

wanton carbon Nov 1, 2023, 11:50 AM

#

nah i just made the shrimpiest thing

#

feel free to improve stuff in any way

dark vortex Nov 1, 2023, 11:59 AM

#

hrm

#

it can't map the IBs in the actual submit :/

wanton carbon Nov 1, 2023, 12:03 PM

#

wdym?

#

thats what was i was dumpen above

dark vortex Nov 1, 2023, 12:07 PM

#

not sure but for me, I get "unmappable", which is probably because the driver already has the stuff mapped so we can't doublemap it

#

setting up detouring of D3DKMTLock calls and intercepting mapped ptrs as we speak

#

also wtf is D3DKMTLock (non-2)

#

ima skip that for now lol

wanton carbon Nov 1, 2023, 12:08 PM

#

weird

wanton carbon Nov 1, 2023, 12:09 PM

#

dark vortex also wtf is D3DKMTLock (non-2)

just the older api

dark vortex Nov 1, 2023, 12:09 PM

#

ye but they have some weird ass "array of pages to map" shit in there

wanton carbon Nov 1, 2023, 12:09 PM

#

ah do you have rebar on

dark vortex Nov 1, 2023, 12:10 PM

#

suppose I do yea

wanton carbon Nov 1, 2023, 12:10 PM

#

i don't

#

then ye with rebar it might keep shit mapped

#

alternatively just unmap it lol

#

then map it again

#

fuck you driver

dark vortex Nov 1, 2023, 12:13 PM

#

lmao

#

I just do another map of handle<->mapped pointer

#

nonintrusive and easy

wanton carbon Nov 1, 2023, 12:14 PM

#

will work

#

but does it send a message

dark vortex Nov 1, 2023, 12:16 PM

#

lmao

#

this is really weird tho

#

they have an INDIRECT_BUFFER packet that apparently jumps to 0x30001c000, but none of the cmdbufs in the submit are located there thonk

wanton carbon Nov 1, 2023, 12:41 PM

#

it doesn't have to be in the submit data, no?

#

i think we just need to follow indirects the same way

#

map and decode

dark vortex Nov 1, 2023, 12:44 PM

#

yeah, doin' it rn

#

it's a bit annoying because I can't write any locals from the umr decode callbacks

#

right now I just write globals which isn't very clean but it should work ig

wanton carbon Nov 1, 2023, 12:47 PM

#

it just needs to hold together until we figure it out

dark vortex Nov 1, 2023, 12:54 PM

#

looks like it werks

#

just some more state setup

#

what I'm not sure about is how all of the IBs are connected

#

if I had to guess they're probably meant to be executed one after the other but it'd be up to the kmd to actually chain them together then

wanton carbon Nov 1, 2023, 12:58 PM

#

ye

#

it seemed like they are preambles

dark vortex Nov 1, 2023, 1:01 PM

#

yeah

#

i think imma try ramping up the number of draws and seeing if anything changes

#

even at 100k draws there isn't really a whole lot of difference

dark vortex Nov 1, 2023, 1:31 PM

#

dark vortex dEQP-VK.api.command_buffers.record_many_draws_primary_2 repros the issue

#

i looked for this like 5 times now so ima just pin it so I don't have to look 6 times

#

the test falls apart at exactly 16384 draws

#

that number still works but anything above that goes boom

#

the ib size doesn't change when going from 16384->16385 though, so something else is probably going on

#

I'm also not completely sure if the GPU actually hangs?

#

I don't get any device_lost or anything, nor do I see TDR mentioned anywhere in system logs

wanton carbon Nov 1, 2023, 2:02 PM

#

hum

#

what happens?

dark vortex Nov 1, 2023, 2:09 PM

#

It Just Fails™️

wanton carbon Nov 1, 2023, 2:09 PM

#

nice

#

ah i recall now

#

i think the device might be lost, its just never uncovered if you don't run a second test

dark vortex Nov 1, 2023, 3:33 PM

#

actually the test starts failing at 16385 draws, but the GPU doesn't start hanging there

#

it hangs at some other number I guess

#

tfw installing wsl for grep because windows commandline tools are just that garbage

#

i also noticed the chunk's cmd size member is less than the actual cmdbuf's size probably

#

I record the draw 100k times but there are only 6k packets in the log, and the size is also onlx 0xfc00

#

it seems like the size indeed maxes out at 0xfc00

#

not sure how that is supposed to work thonk

wanton carbon Nov 1, 2023, 4:02 PM

#

splits ibs at that size or smth?

dark vortex Nov 1, 2023, 4:03 PM

#

there are no additional ibs in that chunk

wanton carbon Nov 1, 2023, 4:04 PM

#

humm

dark vortex Nov 1, 2023, 4:04 PM

#

I am pretty sure the ib continues beyond that size, too

#

I don't think any ib just ends with the nth draw packet, we just stop parsing there

wanton carbon Nov 1, 2023, 4:04 PM

#

oh

#

maybe don't divide by 4

dark vortex Nov 1, 2023, 4:13 PM

#

that's not exactly it but ye you might be onto something

#

hehe yup exactly, they do split the IBs

#

huh it was always there in the file

#

ok not questioning it lmao

#

wonder if it's always safe to split into chunks of 0xfc00 dwords with packet sizes and stuff

#

don't think it is because there's packets with arbitrary sizes

#

gonna just put the splitting into radeon_emit logic directly

#

ah nvm the amdgpu winsys has splitting logic too

#

yoink

#

actually can't just yoink

wanton carbon Nov 1, 2023, 4:39 PM

#

yeet

#

did bas land the winsys refactor?

#

might be worth forwarding to it

dark vortex Nov 1, 2023, 4:40 PM

#

rebasing on top of half a year of changes frog_sweat

#

i need to rework submission quite a bit anyway

#

since the limit is so laughably low (less than 16KB, wtf?) I'm considering to just always allocate CS BOs with a size of that limit

#

then we just write into the mapped ptr directly and chain more stuff in cs_grow if necessary

#

not sure which winsys refactor you mean btw

wanton carbon Nov 1, 2023, 4:46 PM

#

the cs munging can be shared with loonix

wanton carbon Nov 1, 2023, 4:48 PM

#

dark vortex not sure which winsys refactor you mean btw

he was mentioning sth

dark vortex Nov 1, 2023, 5:03 PM

#

wanton carbon the cs munging can be shared with loonix

the cs munging in loonix is a bit overgrown and contains schtuff I'm not sure we need

#

it mainly is so cluttered because it has to account for queues where we can't chain shit

#

which is video stuff

#

no idea how that is supposed to work with the d3dkmt limits and I don't think it's very useful to worry about it

wanton carbon Nov 1, 2023, 5:06 PM

#

i have not begun to worry

#

but its code written ig

dark vortex Nov 1, 2023, 5:56 PM

#

wanton carbon but its code written ig

you had some code in there that dispatches the preamble cs separately, did that ever work?

wanton carbon Nov 1, 2023, 5:57 PM

#

uh

#

sorry, can't recall

dark vortex Nov 1, 2023, 5:57 PM

#

hm ok

wanton carbon Nov 1, 2023, 5:58 PM

#

additional 6 mo of bikeshed has degraded my neural matter

#

but i was trying all manner of random shit :/

dark vortex Nov 1, 2023, 5:58 PM

#

it's kinda necessary now because we can't just patch this in

#

but it doesn't seem like any commands from the non-preamble cmdbuf go through atm

#

oh we lose the device too lol

#

interesting, this must be hanging the CP

#

so there's no soft recovering out of this one

#

and yet, my session remains completely unharmed

wanton carbon Nov 1, 2023, 6:08 PM

#

superior os you say

dark vortex Nov 1, 2023, 6:38 PM

#

2 things

messed up size of private data
forgor to pad

#

with that I can at least submit the preamble stuff again without things blowing up

wanton carbon Nov 1, 2023, 6:52 PM

#

neat

#

also remember to upstream so that i may benefit too later

dark vortex Nov 1, 2023, 7:25 PM

#

I’m trying to get submitting anything but the preamble working rn

dark vortex Nov 1, 2023, 8:11 PM

#

messed up size once more

#

now I'm hanging the gpu properly

#

:O

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hmmm

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ok, so I seem to have figured things out

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we shouldn't set any flags for the preambles, both should be 0

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with that, I can get the smoke tests to pass again

wanton carbon Nov 1, 2023, 8:19 PM

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humm

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but it seems like prop is setting flags frog_think

dark vortex Nov 1, 2023, 8:25 PM

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on some things

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perhaps they control some scheduling/sync stuff or w/e

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prop does sometimes submit 2 IBs with both flags being 0 I think

wanton carbon Nov 1, 2023, 8:33 PM

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gib updated dadachum

dark vortex Nov 1, 2023, 8:40 PM

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you mean the log i got?

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i pushed my changes so far too

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the draw is now executed 200k times, if that's a problem you can just revert the last commit

wanton carbon Nov 1, 2023, 8:41 PM

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ok now i see it

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let me try

dark vortex Nov 1, 2023, 8:41 PM

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also uh the 2 ib with both flags 0 is not where I thought it'd be, it's not generated by the main submit at least

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it works for us tho so ¯_(ツ)_/¯

wanton carbon Nov 1, 2023, 8:43 PM

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ngl the takeaway will be that the prop driver does various random stuff out of superstition

dark vortex Nov 1, 2023, 8:46 PM

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ooof

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i see a major problem

wanton carbon Nov 1, 2023, 8:46 PM

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yesh

#:frog_gone: martty's mesa misadventures