09:17 <narmstrong> Lyude: HdkR: you can dump https://github.com/BayLibre/u-boot/releases/download/v2017.11-libretech-cc/u-boot.bin.odroid-n2_2019.07-rc3-00022-g46f28f0e89.gz on a sdcard `zcat u-boot.bin.odroid-n2_2019.07-rc3-00022-g46f28f0e89.gz | sudo dd of=/dev/mmcblk0 conv=fsync,notrunc bs=512 seek=1` and you'll have a fresh mainline u-boot for the N2, don't forget to switch to "MMC" boot instead of SPI

12:46 <Lyude> narmstrong: awesome! Thank you

15:23 <narmstrong> Lyude: I fixed ethernet in https://github.com/BayLibre/u-boot/releases/download/v2017.11-libretech-cc/u-boot.bin.odroid-n2_2019.07-rc3-00022-g47bebaa4a3.gz !

17:43 <shadeslayer[m]> Could someone explain the difference between panfrost_drm_job_submit and panfrost_job_submit?

17:43 <shadeslayer[m]> <shadeslayer[m] "Could someone explain the differ"> Should panfrost_job_submit call panfrost_drm_job_submit?

19:34 <HdkR> woo

19:36 <HdkR> alyssa: Does Midgard do integer rotate in two instructions as well?

19:37 <alyssa> Not sure

19:38 <HdkR> I was checking for the PR that just opened for integer rotate being added to nir :P

22:28 <alyssa> So I'm looking into gl_FragCoord.w

22:28 <alyssa> Turns out we need it recip'd, just like with lima

22:29 <anarsoul> so use lima lowering?

22:29 <alyssa> The trick is to emit a dedicated varying with it preflipped

22:29 <alyssa> anarsoul: The difference is that lima is computing frcp for every fragm, whereas the Midg blob does it just once per vertex

22:29 <anarsoul> oh, OK

22:29 <alyssa> Not sure if lima can do that trick too

22:30 <anarsoul> unlikely, gl_FragCoord is PP thing

22:31 <alyssa> anarsoul: Does it actually load gl_FragCoord or does it just read off the gl_position varying?

22:32 <anarsoul> alyssa: it's special source for varying fetch, see https://gitlab.freedesktop.org/anarsoul/mali-isa-docs/blob/master/Utgard-PP.md

22:34 <alyssa> anarsoul: Mm, maybe not. Unified architectures are more efficient..? ;P

22:34 <anarsoul> alyssa: I guess

22:35 <anarsoul> well, at least you don't have to deal with GP weirdness :)

22:35 <alyssa> It's obscure, regardless. I'll just use the lima pass for now.

22:35 <alyssa> Oh, shoot, there's another issue

22:35 <alyssa> Lima pass isn't actually conformant (well, not for Panfrost purposes)

22:35 <alyssa> [It might be fine for Utgard]

22:36 <alyssa> Since "reciprocal of linear interpolation of reciprocal" =/= "plain ol' lerp"

23:54 <NeuroScr> it happens

23:54 <alyssa> Being able to do vertex keying is important for a lot of stuff beyond just gl_FragCoord.w

23:55 <alyssa> Especially for when we do desktop, probably

23:59 <anarsoul> heh