19:14 <Glanzmann> mps: When you play videos on the console are you using mpv -vo drm ? Because I tried it with a 4k video, while it burns a lot of cpu (200%) I don't see any tiering any more.

19:16 <jannau> Glanzmann: that would be expected with dcp

19:16 <Glanzmann> I see.

19:16 <Glanzmann> jannau: Is it because of the two buffers which are filled up and than swapped?

19:17 <Glanzmann> jannau: Because when I run the same video under X11 with 'mpv -vo x11' I can see the tiering.

19:17 <Glanzmann> Also under DCP.

19:18 <Glanzmann> And I see much more CPU burned (600%).

19:25 <jannau> yes, dcp waits for vblank before it switches buffers

19:26 <jannau> X11 uses just a single framebuffer even when running under dcp

19:26 <Glanzmann> I see.

19:27 <Glanzmann> jannau: Thank you for the explanation.

19:29 <mps> Glanzmann: I tested 'mpv -vo drm' with appledrm and it is fine, though forgot with simpledrm. next time I boot with simpledrm I will check

19:31 <Glanzmann> mps: I see. Thank you.

19:31 <Glanzmann> mps: Have you already tried a gpu enabled kernel?

19:32 <Glanzmann> I just was able to boot one which manages to initialize gpu (previously they did not boot or did not enable gpu, but I'm unable to start x).

19:33 <mps> no, not yet. I would have to setup rust on alpine and I don't know how to to do that

19:33 <Glanzmann> mps: It is pretty easy.

19:33 <Glanzmann> curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

19:33 <Glanzmann> Than you follow the rust quickstart of the kernel. You can pick the specific version that you need.

19:33 <Glanzmann> mps: Does alpine have clang?

19:34 <Glanzmann> mps: https://docs.kernel.org/next/rust/quick-start.html

19:34 <mps> Glanzmann: yes, it have clang and rust

19:34 <mps> but iirc one package for rust is missing

19:34 <mps> bindgen iirc

19:34 <Glanzmann> mps: I see, but you can compile rust in your home for your user.

19:34 <Glanzmann> And use that.

19:35 <Glanzmann> Than you can install any missing dependency.

19:35 <mps> Glanzmann: yes, I know I can but I'm lazy to do that

19:35 <Glanzmann> mps: Only thing I had to do was to downgrade it so that the linux kernel does not complain but apparantly you can also tell the linux kernel to use the version that is there also when it is a different version that the linux kernel expects.

19:35 <mps> I was first person who ported rust to alpine at the end :)

19:36 <mps> but after some time I lost interest in rust

19:38 <Glanzmann> mps: I see. I hope for asahi christmas present release with gpu. Not sure if it solves my issue, but I sure hope so. With simpledrm I had sometimes 'xfreerdp' not draw updates to the screen.

19:38 <mps> and for now gpu is not important for me personaly. when it become stable enough I will look, and maybe ask you for the help

19:38 <Glanzmann> Will try tomorrow with dcp and report back.

19:38 <Glanzmann> mps: Sure, or I'll ask you. :-)

19:38 <mps> :)

19:40 <Glanzmann> mps: This is what I managed so far: https://tg.st/u/gpu.sh (kernel config is from alyssa. on my mini it boots and initializes gpu and dcp but fails to start x).

19:40 <Glanzmann> I also managed to compile the mesa user land installed it but I don't know how I'm supposed to use that. Anyway at some point I'll figure it out or someone else will document the process.

19:40 <mps> Glanzmann: does it need mesa gallium-asahi driver?

19:41 <mps> did you built it

19:41 <Glanzmann> mps: Might, be never heard of that before.

19:41 <mps> I think it is needed for gpu

19:42 <Glanzmann> mps: So I used alyasss tree, searched for 'asahi' and used the branch which was most recent. Linas tree seems to be only accessable when logged in, so I signed up but did not receive the email yet.

19:43 <mps> hm, I thought that the gpu is already in asahi-wip kernel branch

19:45 <mps> ah, looks like bindgen could be easily added with cargo

19:45 <Glanzmann> mps: Might be, I used gpu/rust-wip because there was something changed in the last 24 hours (see email).

19:45 <Glanzmann> mps: Yep, that is what I meant.

19:46 <mps> thanks, then it could be easy I hope

19:47 <Glanzmann> mps: So I see gallium, but I have not build the asahi part of it.

19:47 <Glanzmann> mps: I think it only takes you a minute or two with the kernel quickstart rust guide.

19:50 <mps> so, looks like it would be easier at beginning to use rustup than distro packages

19:55 <Glanzmann> mps: Yep.