search for: dither

https://bugs.freedesktop.org/show_bug.cgi?id=111199 Bug ID: 111199 Summary: Bug in dither.depth property set Product: xorg Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Driver/nouveau Assignee: nouveau at lists.freedesktop.org...

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> --- dr...

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> --- dr...

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> --- dr...

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> Reviewe...

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> Reviewe...

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> Reviewe...

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...

...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 l...

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 c...

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 c...

> 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 don...

...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...

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.freedes...

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.fr...

...y good at compressing audio that is not loud. In fact, the quieter the recording, the smaller the FLAC file. I've actually mastered some audio where the final 24- bit FLAC was larger than the original 24-bit FLAC, simply because the amplitude is larger on average after mastering. When 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 dither...

...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). Althoug...

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

...nt 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 actually 2 MB *bigger* than the corresponding 24/48 flac file. Does this make sense to anyone? He says that his 24/48 files always compress to around the same size as the same files converted to 16/48 or 16/44.1. I...

Thanks for the replies! My first thought was that the file had low levels (before he sent me the file), but that's definitely not the case with this file. There are many peaks that reach 0dBFS. He sent me the original wav this morning and I loaded it into Wave Editor on OS X. I dithered to 16 bit using MBIT+ (high/ultra setting) and saved the 16 bit file. I did nothing else (no normalizing or any other processing). I can't give you the 16 bit size right now since I'm at work and the file is on my Mac at home, but I can report back tonight. Whatever my process is, thoug...