#dri-devel on 2024-08-20 — irc logs at oftc.irclog.whitequark.org

2024-07-16 04:52 ChanServ changed the topic of #dri-devel to: <ajax> nothing involved with X should ever be unable to find a bar

00:06 u-amarsh04 has quit []

00:07 amarsh04 has joined #dri-devel

00:07 amarsh04 has quit []

00:15 RAOF has quit [Remote host closed the connection]

00:15 leizhou has quit [Remote host closed the connection]

00:16 RAOF has joined #dri-devel

00:16 leizhou has joined #dri-devel

00:18 phire_ has joined #dri-devel

00:18 phire is now known as Guest912

00:18 phire_ is now known as phire

00:22 Guest912 has quit [Ping timeout: 480 seconds]

00:25 warpme has joined #dri-devel

00:28 <DemiMarie> How big of a hit do Intel and AMD take when rendering to linear buffers?

00:30 leizhou has quit [Ping timeout: 480 seconds]

00:30 Dark-Show has quit [Quit: Leaving]

00:33 warpme has quit [Ping timeout: 480 seconds]

00:34 davispuh has quit [Ping timeout: 480 seconds]

00:38 pzanoni is now known as przanoni

00:46 amarsh04 has joined #dri-devel

00:47 thongthai_ has joined #dri-devel

00:47 thongthai has left #dri-devel [#dri-devel]

00:52 thongthai_ has quit [Remote host closed the connection]

00:52 thongthai has joined #dri-devel

00:56 thongthai has left #dri-devel [#dri-devel]

00:58 leizhou has joined #dri-devel

00:58 thongthai has joined #dri-devel

00:58 przanoni has left #dri-devel [#dri-devel]

00:59 pzanoni has joined #dri-devel

01:03 glennk has quit [Ping timeout: 480 seconds]

01:06 leizhou has quit [Ping timeout: 480 seconds]

01:14 YuGiOhJCJ has quit [Remote host closed the connection]

01:14 YuGiOhJCJ has joined #dri-devel

01:15 lemonzest has quit [Quit: WeeChat 4.3.5]

01:15 bolson_ has joined #dri-devel

01:17 bolson has quit [Ping timeout: 480 seconds]

01:25 konstantin_ has joined #dri-devel

01:25 konstantin is now known as Guest920

01:25 konstantin_ is now known as konstantin

01:26 lemonzest has joined #dri-devel

01:28 Guest920 has quit [Ping timeout: 480 seconds]

01:33 leizhou has joined #dri-devel

01:37 dehsou^ has joined #dri-devel

01:41 leizhou has quit [Ping timeout: 480 seconds]

01:42 amarsh04 has quit [Ping timeout: 480 seconds]

01:44 alane has quit []

01:45 alane has joined #dri-devel

01:47 Company has quit [Ping timeout: 480 seconds]

01:53 amarsh04 has joined #dri-devel

01:53 sukuna has joined #dri-devel

01:55 sukuna1 has joined #dri-devel

01:56 Company has joined #dri-devel

02:01 <mareko> DemiMarie: I'm guessing -75%

02:02 sukuna has quit [Ping timeout: 480 seconds]

02:03 <DemiMarie> mareko: what about with a copy to linear and back?

02:04 <DemiMarie> I’m finding validating nonlinear buffers to be a nightmare.

02:05 leizhou has joined #dri-devel

02:11 <mareko> DemiMarie: if you use the gfx pipeline, -75% regardless of how you do it

02:12 <DemiMarie> mareko: what about if I use a copy engine?

02:13 leizhou has quit [Ping timeout: 480 seconds]

02:13 <mareko> DemiMarie: -90% if the copy engine is 10x slower than VRAM (the copy engine is meant to be for copies over PCIe, which is ~20x slower than VRAM)

02:13 <DemiMarie> mareko: dang it!

02:14 <mareko> DemiMarie: if you use compute and 64x1 workgroups (linear access pattern), it should be fast, or glBlitFramebuffer/glCopyImageSubData if the driver implements it that way

02:14 <DemiMarie> Is fuzzing compositors and UMDs the best option?

02:15 <DemiMarie> mareko: Nice!

02:16 <DemiMarie> The problem I am dealing with is making sure that the compositor won’t read out of bounds when passed maliciously crafted buffers.

02:17 <DemiMarie> For linear buffers this is trivial, except for alignment. For nonlinear buffers it seems that the best I can do is hardware-in-the-loop fuzzing of thousands of lines of Mesa code.

02:21 leizhou has joined #dri-devel

02:21 apteryx has joined #dri-devel

02:25 Daanct12 has joined #dri-devel

02:36 konstantin_ has joined #dri-devel

02:36 konstantin is now known as Guest927

02:36 konstantin_ is now known as konstantin

02:40 Guest927 has quit [Ping timeout: 480 seconds]

02:40 leizhou has quit [Remote host closed the connection]

02:52 krumelmonster has quit [Ping timeout: 480 seconds]

02:55 leizhou has joined #dri-devel

02:56 Kayden has quit [Quit: reboot]

03:00 krumelmonster has joined #dri-devel

03:04 leizhou has quit [Ping timeout: 480 seconds]

03:11 sukuna1 has quit [Ping timeout: 480 seconds]

03:22 YuGiOhJCJ has quit [Quit: YuGiOhJCJ]

03:28 leizhou has joined #dri-devel

03:31 sassefa has joined #dri-devel

03:34 konstantin_ has joined #dri-devel

03:34 konstantin is now known as Guest933

03:34 konstantin_ is now known as konstantin

03:36 leizhou has quit [Ping timeout: 480 seconds]

03:37 Guest933 has quit [Ping timeout: 480 seconds]

03:39 Daanct12 has quit [Quit: WeeChat 4.4.1]

03:40 nerdopolis has quit [Ping timeout: 480 seconds]

03:41 Daanct12 has joined #dri-devel

03:43 Stary has quit [Quit: ZNC - http://znc.in]

03:48 Stary has joined #dri-devel

04:01 leizhou has joined #dri-devel

04:04 nchery has quit [Remote host closed the connection]

04:05 nchery has joined #dri-devel

04:08 sassefa has quit [Remote host closed the connection]

04:09 sassefa has joined #dri-devel

04:10 leizhou has quit [Ping timeout: 480 seconds]

04:15 kzd has quit [Ping timeout: 480 seconds]

04:18 leizhou has joined #dri-devel

04:26 leizhou has quit [Ping timeout: 480 seconds]

04:27 Company has quit [Quit: Leaving]

04:31 <DemiMarie> Does robustImageAccess2 typically check against the image size or dimensions? If it checks against the image size, then my concern is completely mitigated.

04:46 Daanct12 has quit [Quit: WeeChat 4.4.1]

04:46 <mareko> DemiMarie: it checks against the result of imageSize() in GLSL

04:47 <mareko> there is never any out-of-bounds access if you don't use pointers in shaders

04:49 leizhou has joined #dri-devel

04:51 Kayden has joined #dri-devel

04:58 leizhou has quit [Ping timeout: 480 seconds]

04:58 Daanct12 has joined #dri-devel

05:01 bmodem has joined #dri-devel

05:21 leizhou has joined #dri-devel

05:29 leizhou has quit [Ping timeout: 480 seconds]

05:31 Duke`` has joined #dri-devel

05:31 sukrutb has quit [Ping timeout: 480 seconds]

05:49 sassefa has quit []

05:52 leizhou has joined #dri-devel

05:54 Haaninjo has joined #dri-devel

06:01 leizhou has quit [Ping timeout: 480 seconds]

06:06 RAOF has quit [Remote host closed the connection]

06:07 RAOF has joined #dri-devel

06:10 sassefa_ has joined #dri-devel

06:11 tzimmermann has joined #dri-devel

06:22 sukrutb has joined #dri-devel

06:30 heat has quit [Remote host closed the connection]

06:31 heat has joined #dri-devel

06:36 krushia has quit [Read error: No route to host]

06:36 krushia has joined #dri-devel

06:42 warpme has joined #dri-devel

06:45 glennk has joined #dri-devel

06:47 warpme has quit [Read error: No route to host]

06:48 warpme has joined #dri-devel

06:49 jsa has joined #dri-devel

06:53 frieder has joined #dri-devel

06:54 <MrCooper> DemiMarie: buffer access is always bounded within height * stride, even with tiling; though note that the height needs to be aligned to a tile boundary

06:56 warpme has quit [Ping timeout: 480 seconds]

06:57 <MrCooper> zamundaaa[m]: I'd have to see the code, FWIW adjusting the source & destination coordinates of the blit works in xf86-video-amdgpu/ati though

06:57 sukrutb has quit [Ping timeout: 480 seconds]

07:00 sghuge has quit [Remote host closed the connection]

07:00 sghuge has joined #dri-devel

07:00 <emersion> maybe glCopyTexSubImage would help

07:05 warpme has joined #dri-devel

07:22 Blase82 has joined #dri-devel

07:30 zzoon_back_2nd_Sep[m] has joined #dri-devel

07:34 jkrzyszt has joined #dri-devel

07:34 yyds_ has joined #dri-devel

07:36 yyds has quit [Ping timeout: 480 seconds]

07:40 mvlad has joined #dri-devel

07:47 kts has joined #dri-devel

07:54 vliaskov_ has joined #dri-devel

07:58 heat has quit [Remote host closed the connection]

07:59 heat has joined #dri-devel

08:05 frankbinns1 is now known as frankbinns

08:16 sima has joined #dri-devel

08:24 heat has quit [Remote host closed the connection]

08:25 heat has joined #dri-devel

09:29 kts has quit [Quit: Konversation terminated!]

09:45 <jani> straightforward review, anyone? https://lore.kernel.org/r/20240812122312.1567046-1-jani.nikula@intel.com

09:57 kts has joined #dri-devel

10:01 lemonzest has quit [Quit: WeeChat 4.3.5]

10:03 lemonzest has joined #dri-devel

10:14 vjaquez has quit [Read error: Connection reset by peer]

10:15 vjaquez has joined #dri-devel

10:15 kts has quit [Quit: Konversation terminated!]

10:21 heat is now known as Guest962

10:21 Guest962 has quit [Read error: Connection reset by peer]

10:21 heat has joined #dri-devel

10:22 <zamundaaa[m]> MrCooper: hmm, this code binds the buffer from the iGPU as a texture and uses that to render to the buffer on the dGPU. I haven't actually tried blitting

10:38 frieder has quit [Remote host closed the connection]

10:42 leizhou has joined #dri-devel

10:42 nerdopolis has joined #dri-devel

10:46 <MrCooper> zamundaaa[m]: FWIW, "blits" are really textured quads with glamor in xserver

10:50 leizhou has quit [Ping timeout: 480 seconds]

10:55 DodoGTA has quit [Quit: DodoGTA]

10:56 DodoGTA has joined #dri-devel

11:00 jkrzyszt has quit [Remote host closed the connection]

11:00 jkrzyszt has joined #dri-devel

11:07 siak has joined #dri-devel

11:17 leizhou has joined #dri-devel

11:20 guludo has joined #dri-devel

11:25 warpme has quit [Ping timeout: 480 seconds]

11:25 leizhou has quit [Ping timeout: 480 seconds]

11:28 warpme has joined #dri-devel

11:29 apteryx has quit [Ping timeout: 480 seconds]

11:33 hansg has joined #dri-devel

11:44 frieder has joined #dri-devel

11:46 TMM has quit [Quit: https://quassel-irc.org - Chat comfortably. Anywhere.]

11:46 TMM has joined #dri-devel

11:51 leizhou has joined #dri-devel

11:52 heat is now known as Guest965

11:52 Guest965 has quit [Read error: Connection reset by peer]

11:52 heat has joined #dri-devel

11:56 siak_ has joined #dri-devel

11:56 siak has quit [Ping timeout: 480 seconds]

11:59 leizhou has quit [Ping timeout: 480 seconds]

12:01 feaneron has joined #dri-devel

12:05 leizhou has joined #dri-devel

12:07 pcercuei has joined #dri-devel

12:26 epoch101 has joined #dri-devel

12:37 apteryx has joined #dri-devel

12:44 bmodem has quit [Ping timeout: 480 seconds]

12:48 warpme has quit [Ping timeout: 480 seconds]

12:48 epoch101 has quit [Ping timeout: 480 seconds]

12:49 epoch101 has joined #dri-devel

12:57 epoch101 has quit [Ping timeout: 480 seconds]

12:57 epoch101 has joined #dri-devel

13:01 Matombo444 has quit [Remote host closed the connection]

13:04 Matombo has joined #dri-devel

13:06 krushia has quit [Quit: Konversation germinated!]

13:06 davispuh has joined #dri-devel

13:06 krushia has joined #dri-devel

13:06 Daanct12 has quit [Quit: WeeChat 4.4.1]

13:11 bolson_ has quit [Remote host closed the connection]

13:12 bolson has joined #dri-devel

13:13 frieder has quit [Ping timeout: 480 seconds]

13:17 kts has joined #dri-devel

13:18 alih has quit [Quit: Konversation terminated!]

13:20 alih has joined #dri-devel

13:22 frieder has joined #dri-devel

13:23 kts has quit [Quit: Konversation terminated!]

13:32 hansg has quit [Quit: Leaving]

13:33 frieder has quit [Ping timeout: 480 seconds]

13:43 frieder has joined #dri-devel

13:46 agd5f_ has quit []

13:46 agd5f has joined #dri-devel

13:53 bolson_ has joined #dri-devel

13:55 bolson has quit [Ping timeout: 480 seconds]

14:01 loki_val has joined #dri-devel

14:03 TMM has quit [Quit: https://quassel-irc.org - Chat comfortably. Anywhere.]

14:03 TMM has joined #dri-devel

14:04 crabbedhaloablut has quit [Ping timeout: 480 seconds]

14:06 Company has joined #dri-devel

14:07 coldfeet has joined #dri-devel

14:09 epoch101 has quit [Ping timeout: 480 seconds]

14:18 epoch101 has joined #dri-devel

14:25 kzd has joined #dri-devel

14:32 apteryx has quit [Quit: apteryx]

14:34 siak has joined #dri-devel

14:36 siak_ has quit [Ping timeout: 480 seconds]

14:36 dsimic is now known as Guest977

14:36 dsimic has joined #dri-devel

14:38 Guest977 has quit [Ping timeout: 480 seconds]

14:42 siak_ has joined #dri-devel

14:44 siak has quit [Ping timeout: 480 seconds]

14:59 frieder has quit [Remote host closed the connection]

15:08 hansg has joined #dri-devel

15:08 kts has joined #dri-devel

15:11 yyds has joined #dri-devel

15:12 yyds_ has quit [Ping timeout: 480 seconds]

15:15 Company has quit [Remote host closed the connection]

15:15 Company has joined #dri-devel

15:21 tzimmermann has quit [Quit: Leaving]

15:23 Duke`` has quit [Ping timeout: 480 seconds]

15:25 warpme has joined #dri-devel

15:27 qpla has joined #dri-devel

15:28 epoch101 has quit [Ping timeout: 480 seconds]

15:29 feaneron has quit [Quit: feaneron]

15:30 heat has quit [Remote host closed the connection]

15:31 Duke`` has joined #dri-devel

15:32 Company has quit [Remote host closed the connection]

15:34 Company has joined #dri-devel

15:52 warpme has quit [Remote host closed the connection]

15:53 warpme has joined #dri-devel

15:58 rsalvaterra has quit []

15:59 rsalvaterra has joined #dri-devel

15:59 coldfeet has quit [Remote host closed the connection]

16:01 Duke`` has quit [Ping timeout: 480 seconds]

16:08 robertfoss has quit [Ping timeout: 480 seconds]

16:09 sassefa_ has quit []

16:09 Duke`` has joined #dri-devel

16:14 warpme has quit []

16:15 robertfoss has joined #dri-devel

16:15 warpme has joined #dri-devel

16:17 warpme has quit []

16:17 warpme has joined #dri-devel

16:18 warpme has quit []

16:19 siak_ has quit []

16:22 warpme has joined #dri-devel

16:23 warpme has quit []

16:24 warpme has joined #dri-devel

16:25 warpme has quit []

16:25 warpme has joined #dri-devel

16:34 feaneron has joined #dri-devel

16:37 heat has joined #dri-devel

16:47 <DemiMarie> MrCooper: if a tile is X bytes, are offset and stride required to be a multiple of X bytes?

16:48 <DemiMarie> MrCooper: also, if I have a bunch of questions on modifiers, what is the best time to ask them?

16:49 <MrCooper> the size of the buffer area which may be accessed is a multiple of the tile size, the stride not necessarily though

16:50 <MrCooper> as always on IRC, just ask anytime, don't expect an immediate answer though

16:53 <MrCooper> DemiMarie: the common definition of stride with tiling is a multiple of the tile width (>= the image width) multiplied by bytes per pixel

16:55 <DemiMarie> MrCooper: is there a way to get the tile width from a dmabuf?

16:57 <DemiMarie> MrCooper: can I assume that if client-provided stride is not an integer multiple of the bytes per pixel, the client is buggy?

16:58 kts has quit [Quit: Konversation terminated!]

16:59 <DemiMarie> The reason I asked about time is that IRC doesn't have message history built in, and I wasn't sure if a question asked when people are offline would be seen later.

17:00 <DemiMarie> Also, can I assume that if the format is subsampled, the width and height will be multiples of the subsampling ratio? That seems to be implied by the Vulkan valid usage requirements.

17:07 <MrCooper> DemiMarie: not that I know of, the tile width is part of the modifier definition

17:08 <DemiMarie> MrCooper: will the offset always be a multiple of it?

17:08 <MrCooper> don't think it necessarily has to be

17:10 <DemiMarie> Does that mean that for a given format and modifier, I can compute the minimum buffer size without knowing the hardware?

17:35 mbrost has joined #dri-devel

17:47 hansg has quit [Ping timeout: 480 seconds]

17:50 rz has joined #dri-devel

18:01 <agd5f> modifiers only relay the layout, not alignment requirements

18:03 <DemiMarie> Is that because the alignment requirements are always computable from the modifier and format for a given hardware model and generation?

18:09 mbrost has quit [Ping timeout: 480 seconds]

18:16 gouchi has joined #dri-devel

18:16 jkrzyszt has quit [Ping timeout: 480 seconds]

18:18 coldfeet has joined #dri-devel

18:21 hansg has joined #dri-devel

18:36 warpme has quit []

18:39 alanc has quit [Remote host closed the connection]

18:40 alanc has joined #dri-devel

18:40 sukrutb has joined #dri-devel

18:41 hansg has quit [Quit: Leaving]

18:58 jsa has quit [Ping timeout: 480 seconds]

19:10 jadahl has quit [Ping timeout: 480 seconds]

19:11 mbrost has joined #dri-devel

19:20 leizhou has quit [Remote host closed the connection]

19:20 leizhou has joined #dri-devel

19:20 LeviYun has quit [Ping timeout: 480 seconds]

19:27 jadahl has joined #dri-devel

19:28 sima has quit [Ping timeout: 480 seconds]

19:29 LeviYun has joined #dri-devel

19:37 LeviYun has quit [Ping timeout: 480 seconds]

19:39 sassefa_ has joined #dri-devel

19:46 LeviYun has joined #dri-devel

19:49 rasterman has joined #dri-devel

19:59 mvlad has quit [Remote host closed the connection]

20:05 feaneron has quit [Ping timeout: 480 seconds]

20:12 leizhou has quit [Remote host closed the connection]

20:14 coldfeet has quit [Quit: leaving]

20:15 coldfeet has joined #dri-devel

20:30 <agd5f> Not sure about alignment requirements within a GPU vendor. I would assume they should be compatible, but modifiers don't require that as far as I know. In general alignment requirements tend to be complex so it was a hard problem to solve.

20:32 guludo has quit [Ping timeout: 480 seconds]

20:34 guludo has joined #dri-devel

20:34 rasterman has quit [Quit: Gettin' stinky!]

20:42 mbrost has quit [Ping timeout: 480 seconds]

20:47 Duke`` has quit [Ping timeout: 480 seconds]

20:50 glennk has quit [Ping timeout: 480 seconds]

21:00 mbrost has joined #dri-devel

21:05 feaneron has joined #dri-devel

21:11 leizhou has joined #dri-devel

21:16 vliaskov__ has joined #dri-devel

21:16 leizhou has quit [Remote host closed the connection]

21:16 heat is now known as Guest999

21:17 heat has joined #dri-devel

21:17 Guest999 has quit [Read error: Connection reset by peer]

21:19 leizhou has joined #dri-devel

21:22 vliaskov_ has quit [Ping timeout: 480 seconds]

21:24 heat has quit [Read error: Connection reset by peer]

21:24 heat has joined #dri-devel

21:32 coldfeet has quit [Remote host closed the connection]

21:32 gouchi has quit [Remote host closed the connection]

21:53 kzd has quit [Quit: kzd]

21:58 epoch101 has joined #dri-devel

22:02 vliaskov__ has quit [Ping timeout: 480 seconds]

22:04 heat has quit [Read error: Connection reset by peer]

22:04 heat has joined #dri-devel

22:45 alih has quit []

22:56 mbrost has quit [Ping timeout: 480 seconds]

23:05 simon-perretta-img_ has joined #dri-devel

23:06 feaneron has quit [Ping timeout: 480 seconds]

23:06 simon-perretta-img__ has joined #dri-devel

23:09 epoch101 has quit [Ping timeout: 480 seconds]

23:11 simon-perretta-img has quit [Ping timeout: 480 seconds]

23:13 simon-perretta-img_ has quit [Ping timeout: 480 seconds]

23:20 tarceri has quit [Killed (NickServ (Too many failed password attempts.))]

23:21 tarceri has joined #dri-devel

23:22 <tarceri> py311-generator: FAIL code 1 (38.19=setup[5.43]+cmd[32.76] seconds)

23:22 <tarceri> https://gitlab.freedesktop.org/mesa/piglit/-/jobs/62520455

23:22 <tarceri> Anyone know whats going on in these jobs with piglit?

23:23 <tarceri> https://gitlab.freedesktop.org/mesa/piglit/-/merge_requests/944

23:24 Haaninjo has quit [Quit: Ex-Chat]

23:30 mbrost has joined #dri-devel

23:35 kzd has joined #dri-devel

23:41 pcercuei has quit [Quit: dodo]

23:47 guludo has quit [Quit: WeeChat 4.3.6]

23:51 sukuna has joined #dri-devel

23:54 croissant has quit [Quit: Leaving]