search for: dithering

...r/nouveau Assignee: nouveau at lists.freedesktop.org Reporter: max.kammerer at yahoo.com QA Contact: xorg-team at lists.x.org There is probably a bug in dither.depth property set cause its value compared with dither.mode: //nouveau_connector.c if (property == disp->dithering_mode) { if (asyc->dither.mode != val) { asyc->dither.mode = val; asyc->set.dither = true; } } else if (property == disp->dithering_depth) { if (asyc->dither.mode != val) { //Should be dither.depth asyc->dither.depth = val; asyc->set.d...

While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> --- drive...

While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> --- drive...

While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> --- drive...

From: Lyude Paul <lyude at redhat.com> [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> Reviewed-b...

From: Lyude Paul <lyude at redhat.com> [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> Reviewed-b...

From: Lyude Paul <lyude at redhat.com> [ Upstream commit fb2420b701edbf96c2b6d557f0139902f455dc2b ] While we expose the ability to turn off hardware dithering for nouveau, we actually make the mistake of turning it on anyway, due to dithering_depth containing a non-zero value if our dithering depth isn't also set to 6 bpc. So, fix it by never enabling dithering when it's disabled. Signed-off-by: Lyude Paul <lyude at redhat.com> Reviewed-b...

In the past we assumed that external displays did their own dithering if needed. GPU based dithering is only needed for laptop displays if i had to guess. I was almost thinking my monitor was malfunctioning because of strange barely visible flickering. Now it *seems* as if dithering was the problem, although time will have to tell, because it's subtle to see the...

...of the server internal tables is a bottleneck with too little slots. This variant is the one that avoids crashes and also visual artifacts that i at least observed on tesla gpu's at depth 30. One weird thing i still observed though is that in depth 30 xbgr2101010 scanout mode nouveau used dithering when i tried to output a linear intensity ramp, despite me disabling dithering via the xrandr property. But that is an unrelated problem. -mario > On Thu, Mar 1, 2018 at 1:31 AM, Mario Kleiner > <mario.kleiner.de at gmail.com> wrote: >> The various clut handling functions like...

From: Lyude Paul <lyude at redhat.com> Nvidia display hardware provides a set of flexible dithering options for CRTCs. This dithering is actually noticeable in the CRC output for all available tap points, and can be seen as CRC values for identical frames cycling between either 2 or 4 values repeatedly (each one of these values is a different dithering phase applied to the source output). Of cour...

From: Lyude Paul <lyude at redhat.com> Nvidia display hardware provides a set of flexible dithering options for CRTCs. This dithering is actually noticeable in the CRC output for all available tap points, and can be seen as CRC values for identical frames cycling between either 2 or 4 values repeatedly (each one of these values is a different dithering phase applied to the source output). Of cour...

> Regarding dithering, I am not aware of many programs that do that without > very specific user selection. Any user savvy enough to turn on dithering > would hopefully be paying attention well enough to avoid promoting 16-bit to > 24-bit without noticing their mistake. I suspect that this is sometimes done d...

...th too little slots. >> >> This variant is the one that avoids crashes and also visual artifacts that i >> at least observed on tesla gpu's at depth 30. >> >> One weird thing i still observed though is that in depth 30 xbgr2101010 >> scanout mode nouveau used dithering when i tried to output a linear >> intensity ramp, despite me disabling dithering via the xrandr property. But >> that is an unrelated problem. > > It's sending 8bpc data out to the screen, unless you're using a DP > monitor (and probably would need a Kepler GPU for th...

https://bugs.freedesktop.org/show_bug.cgi?id=34680 Summary: Enable dithering by default for eDP panels Product: xorg Version: unspecified Platform: All OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Driver/nouveau AssignedTo: nouveau at lists.freedeskto...

https://bugs.freedesktop.org/show_bug.cgi?id=92297 Bug ID: 92297 Summary: dithering detected incorrectly Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: minor Priority: medium Component: Driver/nouveau Assignee: nouveau at lists.freed...

...dithered to 16-bit, I'd assume that your WAV output is about 183 MB, is that right? Seems like you're saying that this only compresses to 112 MB. That is consistent with a louder file and/or one with more noise. I assume that you may have boosted the level of the recording before dithering to 16-bit, or maybe even just normalized the 24-bit file. Audio dynamics compression is expected to increase the size of the FLAC output. If you did not alter the volume at all before dithering, then I suppose it's still possible for the dither noise alone to reduce the efficiency of...

...ables is a bottleneck with too little slots. > > This variant is the one that avoids crashes and also visual artifacts that i > at least observed on tesla gpu's at depth 30. > > One weird thing i still observed though is that in depth 30 xbgr2101010 > scanout mode nouveau used dithering when i tried to output a linear > intensity ramp, despite me disabling dithering via the xrandr property. But > that is an unrelated problem. It's sending 8bpc data out to the screen, unless you're using a DP monitor (and probably would need a Kepler GPU for that anyways). Although s...

On Jan 7, 2011, at 18:08, Declan Kelly wrote: > On Fri, Jan 07, 2011 at 05:11:26PM -0800, brianw at sounds.wa.com wrote: > [NIN 24/96] > >> Thanks! That's interesting to note. I think that I ended up with >> the true 24/96 files, but I am curious: How do you tell whether you >> have the full 24/96 or not? > > Extract to WAV, do a hex dump, and look for

Someone sent me a question late last night and I briefly looked at his file this morning and couldn't figure out the answer, so I'm posting here. A friend has a a ~275MB 24 bit, 48khz stereo wav file of rock music that when compressed using flac level 8 gives a flac file under 110 MB in size. When I dithered his file to 16/48 and converted that file to flac, the resulting flac file was

...d to 16-bit, I'd assume that your WAV output is about 183 MB, > is that right? Seems like you're saying that this only compresses to 112 > MB. That is consistent with a louder file and/or one with more noise. I > assume that you may have boosted the level of the recording before dithering > to 16-bit, or maybe even just normalized the 24-bit file. Audio dynamics > compression is expected to increase the size of the FLAC output. If you did > not alter the volume at all before dithering, then I suppose it's still > possible for the dither noise alone to reduce the ef...