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Old 14th June 2019, 13:53   #56561  |  Link
DMU
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Quote:
Originally Posted by Warner306 View Post
Try setting calibration to BT.2020. Some AMD drivers do strange things to the color space.
Slightly corrects the situation, but not completely.
Pic.
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Old 14th June 2019, 15:30   #56562  |  Link
Alexkral
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Originally Posted by DMU View Post
Yes thank you.
HDR now looks better, but SDR is oversaturated, even with DCI-P3.
And more trouble - the rendering time has increased 2 times (30->60ms) on my Vega8 (Ryzen 3 2200G)
Pic.
This shader is only useful for converting the gamut from a BT.2020 HDR source to Rec.709 or DCI-P3 when using passthrough. You should not use it in any other situation. The increase in rendering time surprises me a lot, much more demanding shaders only take 2-3 ms in a 1080 with 4K @ 60fps. Create a folder in the madVR installation folder with the name "ShowRenderSteps" to confirm in the OSD that it's because of the shader.
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Old 14th June 2019, 16:11   #56563  |  Link
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Quote:
Originally Posted by Warner306 View Post
This was posted at the DSPlayer forum. I'm not certain if it works or will bring back functioning stereoscopic 3D playback to Nvidia, but it might be worth a try:

Manual Installation of 3D Vision Driver with New Nvidia Drivers
Thanks! That could be very useful.
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Old 15th June 2019, 00:25   #56564  |  Link
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Originally Posted by Alexkral View Post
This shader is only useful for converting the gamut from a BT.2020 HDR source to Rec.709 or DCI-P3 when using passthrough. You should not use it in any other situation.
Is there a way to automate the process depending on the source?

Quote:
Originally Posted by Alexkral View Post
The increase in rendering time surprises me a lot, much more demanding shaders only take 2-3 ms in a 1080 with 4K @ 60fps. Create a folder in the madVR installation folder with the name "ShowRenderSteps" to confirm in the OSD that it's because of the shader.
Pic.
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Old 15th June 2019, 02:05   #56565  |  Link
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Originally Posted by DMU View Post
Is there a way to automate the process depending on the source?
I don't think so, only in terms of the resolution, but anyway why would you want to do something like that for the SDR? You can use madVR for that and it would not take that much rendering time.
The rendering times are very large, I guess that's normal for your GPU.

Delete the ShowRenderSteps folder if you don't need it, because it will slow down the overall rendering time when the OSD is being displayed.
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Old 15th June 2019, 07:12   #56566  |  Link
huhn
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check your Vram.
19 ms for a trivial task doesn't make sense.

what is this custom shader anyway?
there are so many ways to fix color issue with madVR none of them should be this slow.
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Old 15th June 2019, 08:59   #56567  |  Link
DMU
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Originally Posted by huhn View Post
check your Vram.
19 ms for a trivial task doesn't make sense.
Maybe because I use APU.

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Originally Posted by huhn View Post
what is this custom shader anyway?
there are so many ways to fix color issue with madVR none of them should be this slow.
To fix a issue like this.
For example? madVR -> calibration does not help.
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Old 15th June 2019, 09:24   #56568  |  Link
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a 3d LUT should only take a couple of MS.

and it doesn't matter what GPU you are using a simple range conversation shouldn't take longer then the minimum of about 0.3 ms even an old Intel igpu can do such a task easily. on the other hand AMD APU are one of the fastest iGPUs out there.

you are currently not using an native decoder and the main reason i don't like to recommend AMD apu is that they are limited to 8 lanes of PCIe.

what so ever check out GPU-Z
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Old 15th June 2019, 09:34   #56569  |  Link
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Originally Posted by huhn View Post
a 3d LUT should only take a couple of MS.
3d LUTs in madVR can only be used for tone mapping. This shader is for passthrough.
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Old 15th June 2019, 09:41   #56570  |  Link
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that's not true. you can use a 3D LUT and still output HDR.

Last edited by huhn; 15th June 2019 at 09:45.
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Old 15th June 2019, 09:48   #56571  |  Link
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There's no checkbox to trigger the HDR mode so the screen will remain in SDR mode with much less brightness.
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Old 15th June 2019, 09:51   #56572  |  Link
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this should be automatic just by seeing the type of the 3D LUT if it is a 3D LUT with PQ madVR has to trigger HDR.

HDR calibration isn't something new anyway it just complicated in comparison.
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Old 15th June 2019, 10:07   #56573  |  Link
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I just tried a LUT to process HDR content and it does not activate the HDR mode, so it might be a bug.

Last edited by Alexkral; 15th June 2019 at 10:16.
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Old 15th June 2019, 10:48   #56574  |  Link
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Originally Posted by huhn View Post
you are currently not using an native decoder and the main reason i don't like to recommend AMD apu is that they are limited to 8 lanes of PCIe.

what so ever check out GPU-Z
It seems to be 16 lanes.
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Old 15th June 2019, 11:00   #56575  |  Link
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check the sensors to see if you run into any bottlenecks.

so the 8 PCIe are only a limitation for dGPU strange choice AMD but good in this case.
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Old 15th June 2019, 16:45   #56576  |  Link
toki
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OK, I got a new 4k tv. It's a sony x950g and I'm having the same problems at 60z. I can't get it to go to RGB. I also can't get it to switch to 10bit. Another problem I'm having, which is why I posted in here is when I add the refresh rate rule to madVR 4k starts skipping. When I remove it, it runs much smoother. Halp

Last edited by toki; 15th June 2019 at 16:49.
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Old 15th June 2019, 19:41   #56577  |  Link
xabregas
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Hi, which one of the new nvidia gpus is good enough for 1080p>4k upscaling at 60HZ and also 4k UHD BluRay playback with HDR? Ofc with hugh quality madvr settings.
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Old 15th June 2019, 19:58   #56578  |  Link
Alexkral
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Originally Posted by huhn View Post
that's not true. you can use a 3D LUT and still output HDR.
It seems that the functionality of processing HDR content has been removed in the latest version, or simply doesn't work. I have tried it with several LUTs with the output PQ transfer function, with DXVA2 copy-back decoding, FSE, Direct3D 11 for presentation... and the HDR mode is not triggered. In madVR v0.92.16 there was an explicit option to "process HDR content by using an external 3DLUT" with a checkbox to send HDR metadata to the display that enabled the HDR mode, but in the latest version the only option is "tone map HDR using external 3DLUT " without a checkbox to send the HDR metadata, so it seems logical to think that this is intentional.

Anyway I can only make assumptions as usual, coincidentally this was part of my first question in this thread back in October of 2018 and still no answer.
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Old 15th June 2019, 20:21   #56579  |  Link
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there is still "send the following HDR metadata..." in version >86<
i know it was put into the same category so it was a feature and it looks like it should still work but i can't answer that for you and well i better just stop here because it's been awhile since last october.
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Old 15th June 2019, 21:56   #56580  |  Link
DMU
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there are so many ways to fix color issue with madVR none of them should be this slow.
That is, there are no other ways to fix color issue with HDR madVR?
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling

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