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Old 11th January 2019, 14:41   #54221  |  Link
el Filou
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Quote:
Originally Posted by glc650 View Post
Those presentation times are clearly an issue with the graphics driver.
If none of huhn's recommandations work, you can also try an older driver that still works with your newer card, or file a bug report with AMD.

Another trick: if you use your HTPC mostly for video, you can set your desktop at 720p and configure the media player to switch to 1080, then in the Radeon control panel you configure 720p with 3% underscan and 1080 with 0%. You'll still have the issue with GUI elements at the edges being cropped in MPC-HC, but it's a lesser problem than having the desktop GUI cropped IMHO.
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Old 11th January 2019, 14:56   #54222  |  Link
Warner306
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Originally Posted by huhn View Post
then you shouldn't have a problem with this:


lying to madVR what your display is really calibrated to to get a different result just for HDR is not optimal.

using a gamma processing option to get mathematical incorrect results is totally fine by me it' the users choice even if it is just used for the same reason we use different gammas for SDR to make dark part better visible for example.
I'm not sure going from 2.40 to 2.20 or 2.20 to 2.40 at the display is ruining HDR. Either way, it doesn't look half bad. I got the best results with 2.40. I can only relate my own experience.
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Old 11th January 2019, 14:57   #54223  |  Link
Warner306
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Originally Posted by tp4tissue View Post
could that not just be the display ?

which probe are you using. My i1d3 works well, but my spyder5 messes up dark tones and causes crush.
I got similar results with two different displays when changing the gamma settings at the display and madVR. It could be some deficiency of the gamma tracking near-black, but who knows. They don't crush black with SDR content.
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Old 11th January 2019, 15:23   #54224  |  Link
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Originally Posted by Warner306 View Post
I got the best results with 2.40. I can only relate my own experience.
Same for me, as I said before.
Yesterday I checked 2.4 gamma with black and white clipping of hdr10 test patterns, again, and there's no issue at all.
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Old 11th January 2019, 17:44   #54225  |  Link
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[QUOTE=huhn;1862500]the market share of polaris cards is close to none existing and this will not change.
https://store.steampowered.com/hwsur...lcome-to-Steam

Yeah but thats steam, those figures are going to be massively skewed toward gamers, you cant call that "the market share", Most HTPC owners could own AMD cards, we just dont know.

NVIDIA cards arent just a bit faster according to some, they decimate AMD in NGU, surely further optimization is required, got to be a reason for this?
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Old 11th January 2019, 18:10   #54226  |  Link
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the reason should be an architectural difference that can't do the needed calculation fast enough or yet another driver bug.

NGU and polaris release time is very similar and it was very fast known that polaris doesn't perform well if i'm not mistaken i was one of the first if not the first to notice and investigate on this.

Quote:
Yeah but thats steam, those figures are going to be massively skewed toward gamers, you cant call that "the market share", Most HTPC owners could own AMD cards, we just dont know.
not only was it hard to even get your hands on an polaris card when they where released the mining boom killed that product totally for the gaming market. if you now add the well known NGU problem it's not very great idea to get one if you want to use NGU.

fermi was decimate by GCN 1.0 for nnedi3 too this got better with kepler and was fixed with maxwell where AMD didn't even compete anymore and just refreshed old cards over and over.
and even then AMD was still faster and AMD had a bug where it lost about 50 % performance while decimating nvidia.
the 7850 and the r9 270 classics.

good old times. the fix not getting an nvidia card if you wanted nnedi3.
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Old 11th January 2019, 19:19   #54227  |  Link
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@Mclingo

1 Thread not enough

https://forum.kodi.tv/showthread.php...23175&page=459
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Old 11th January 2019, 20:02   #54228  |  Link
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Does madVR have any API to display Overlay, like as Ctrl+J?
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Old 11th January 2019, 20:15   #54229  |  Link
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the subtitle interface or the api that shows the OSD was accessible too
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Old 11th January 2019, 20:18   #54230  |  Link
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Tell me, please, where can I get madVR's API for OSD?

Last edited by DMU; 11th January 2019 at 20:20.
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Old 11th January 2019, 20:26   #54231  |  Link
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sorry i'm not a programmer but it should be this: http://madshi.net/SubRenderIntf.h
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Old 11th January 2019, 21:14   #54232  |  Link
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Originally Posted by huhn View Post
the reason should be an architectural difference tr9 270 classics.

good old times. the fix not getting an nvidia card if you wanted nnedi3.
i guess well have to hope AMD comes out with some new architecture at some point which works better, i'm happy with what my 580 can do for what i paid for it so i guess thats all that matters at the end of the day.
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Last edited by mclingo; 11th January 2019 at 22:32.
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Old 12th January 2019, 08:32   #54233  |  Link
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Quote:
Originally Posted by veggav View Post
Same situation here but you dom't have to loose 12bits.
Do this: get CRU custom resolution utility.
Write down the front and back porch that madvr is using along with sync width.

Open cru, in detailed resolution add 3840x2160 23.000 with the information provided by madvr.
Click ok.
Press up so 3840x2160 23 will be right under 3840x2160 60.
Click ok
Use restart 64 or 32 depending on your system.

After the restart you will see 3840x2160 under PC resolution.

First under hd resolution, set 3840x2160 23 RGB Full dynamic range and 12bits for 23hz.
The custom resolution will be named 24hz.
Change it.
And now go to pc resolution and change to 3840x2160 24hz.

And that's what I did here to have custom timing and 12bits.
Okay, I'm not sure you'll ever read this but THANK YOU.

If you own an nvidia GPU and if you are trying to create a custom resolution with custom timings in madvr, this is the way to go, I couldn't to it with another method.

Hope this reply will bump your answer so guys with the same problem as me won't spend hours on Google like I did...
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Old 12th January 2019, 09:52   #54234  |  Link
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Will there ever be a 12bit fix for custom modes? MadVR custom refresh rate mode tool simply never creates modes above 8bit, even on 12bit displays with 12bit already set in NVidia CP for default refresh rates
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Old 12th January 2019, 09:59   #54235  |  Link
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I kept telling people for a long time to use CRU to create custom resolutions. It works around any quirks in any APIs, because it just doesn't use any. Let madVR figure out the values if you want, and just put them into the EDID with CRU.
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Old 12th January 2019, 10:33   #54236  |  Link
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is there a step by step guide to doing this with CRU?
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Old 12th January 2019, 11:14   #54237  |  Link
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is there a step by step guide to doing this with CRU?
Heres one

http://madvr.com/crt/CustomResTutorial.html
https://forum.doom9.org/showthread.php?t=173571

Not used it myself, but I had more success with nVidias, I also do not understand why people want the 10 and 12 bits, the more I read the more I understand it is a waste of time and you are just as well with 8 bit RGB.

Last edited by madjock; 12th January 2019 at 14:27. Reason: CRU
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Old 12th January 2019, 14:12   #54238  |  Link
Warner306
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That doesn't mention CRU. It isn't that complicated. You only need to create one custom resolution and simply copy the values calculated by madVR into CRU.
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Old 12th January 2019, 15:09   #54239  |  Link
Charky
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Originally Posted by White Eagle View Post
is there a step by step guide to doing this with CRU?
Well the post I quoted 5 posts above explains it quite well.

But TBH it does not work as flawlessly as I hoped.

Every time I reboot I still need to manually pick a 12bit mode (e.g. 2160p30 @ 12 bits) in nvidia CP first. If I don't, the 2160p23 custom res madvr autoswitches to sticks with 8 bits.

However once i've done this first, then when playing a 23p source, madvr will autoswitch from whatever resolution is active (e.g. 2160p60 8 bits) to my custom 2160p23 res in 12 bits.

So in the end it works, but not without bumps, which is to be expected with such a quirky method, I guess...

Last edited by Charky; 12th January 2019 at 15:13.
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Old 12th January 2019, 15:45   #54240  |  Link
madjock
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Originally Posted by Charky View Post
Well the post I quoted 5 posts above explains it quite well.

But TBH it does not work as flawlessly as I hoped.

Every time I reboot I still need to manually pick a 12bit mode (e.g. 2160p30 @ 12 bits) in nvidia CP first. If I don't, the 2160p23 custom res madvr autoswitches to sticks with 8 bits.

However once i've done this first, then when playing a 23p source, madvr will autoswitch from whatever resolution is active (e.g. 2160p60 8 bits) to my custom 2160p23 res in 12 bits.

So in the end it works, but not without bumps, which is to be expected with such a quirky method, I guess...
But what are you actually achieving here ? apart from seeing a 12 on an OSD ?
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