ChanServ changed the topic of #asahi-gpu to: Asahi Linux: porting Linux to Apple Silicon macs | GPU / 3D graphics stack black-box RE and development (NO binary reversing) | Keep things on topic | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Logs: https://alx.sh/l/asahi-gpu
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<alyssa>
jannau: terrain is a demanding test and we're doing a lot of stupid stuff
<alyssa>
so.. code isn't ready but I have a proof of understanding the hardware
<alyssa>
which is kinda what matters right now anyway
<alyssa>
Passed: 378/420 (90.0%)
<alyssa>
apparently even with what I've hardcoded that's still enough for a pile of tests :-p
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<lina>
alyssa: I'm also pretty sure terrain is overflowing my fixed size TVB, possibly a lot, and I don't have any grow logic in yet...
<lina>
jannau: I think the crash should be fixed (turns out that tvb_something buffer does need to be dynamically sized based on resolution...)
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<lina>
Just added an initial_tvb_size module param (can be changed at runtime, only affects new GPU clients)
<lina>
I do get some improvement on terrain at small framebuffer sizes, but nothing to write home about, so I think most of the slowness there is just shader stuff, not TVB overflows
<lina>
The units are 128K buffer blocks
<lina>
(Default is 0x10 so 2MiB)
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<alyssa>
on macOS at least wiring up the BO cache doubled fps or something crazy like that on terrain
<alyssa>
I haven't merged that commit
<alyssa>
it's possible on linux too there's just massive amounts of overhead
<Dementor>
alyssa, are you running your test on MacOS or Linux ?
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<alyssa>
macOS, but linux results should be similar
<Dementor>
alyssa, thanks for the answer !
<alyssa>
for certain types of driver work, it's more convenient to use macOS right now
<alyssa>
for other types, it's more convenient to use Linux
<alyssa>
when I have more time on my hooves, I'll set up Lina's kernel on the Linux side and switch OS depending on what specific task I'm working on
<alyssa>
(hardware reverse-engineering? probably easier on macOS. shader compiler optimizations? easier on linux.)