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20th February 2018, 20:04 | #49101 | Link |
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I find your statement confusing. It's not a "better solution", it's just that some applications (Photoshop, Windows 7 photo viewer, probably Gimp) use the full contents of the ICC profile to generate a 3DLUT on the fly, while other applications (madVR) need the 3DLUT to be pregenerated in advance and manually configured. The application doesn't give you a choice, so it's pointless to say that one is better than the other.
Last edited by e-t172; 20th February 2018 at 20:12. |
20th February 2018, 22:39 | #49102 | Link |
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The 3DLUT is is a better solution, technically, than it would be if madVR used the full contents of the ICC profile.
Also what is in an ICC profile, beyond the simple 1D LUTs, varies wildly. Often they contain simple measurements that can only be used to do a rough conversion with little or no user control over how it is done. madVR's 256x256x256 3DLUT allows full control of the conversion with very fine grained corrections being possible.
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20th February 2018, 23:20 | #49103 | Link | |
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21st February 2018, 00:30 | #49109 | Link | |
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Last edited by e-t172; 21st February 2018 at 00:33. |
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21st February 2018, 01:00 | #49110 | Link | |
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21st February 2018, 01:25 | #49112 | Link | |
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Windows cannot "load" ICC files, per se - or at the very least it would be quite misleading to say so. It can load the vcgt (GPU gamma ramps) that's within an ICC file (and even then, only if you tick the right checkbox), but that's only a small part of the data contained within the profile, and it can only be used for basic gamma and white point adjustment - not for gamut mapping. It's the responsibility of each individual application (e.g. Photoshop) to load the full profile and come up with a proper color space transformation. Last edited by e-t172; 21st February 2018 at 01:29. |
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21st February 2018, 01:44 | #49114 | Link | |
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Hmm, pehaps we are too close to it but the "disable GPU gamma ramps" should clue you in if you understand how calibration works in Windows. Those options are designed for those who are familiar with Windows calibration because they are the only ones who ask for the feature at all.
It can be very difficult to come up with short descriptions that are clear to everyone. With the knowledge that madVR does not reference ICC profiles everything else should be clear. Please check out the link in my signature and let me know if anything does not make sense to you. Does it not? DisplayCal supports the common meters, X-rite or Spyder. Which meter are you using? Quote:
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madVR options explained Last edited by Asmodian; 21st February 2018 at 01:55. |
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21st February 2018, 02:08 | #49115 | Link | |
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I use NEC MDSVSENSOR |
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21st February 2018, 02:16 | #49116 | Link |
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Personally I think it would be nice if madVR could load say LCMS as an external dll or something and generate its 3DLUTs on the fly from the monitor's ICC profile for each target color space. The resulting 3DLUTs (which could be cached somewhere) would presumably be of somewhat lower quality than using ArgyllCMS' collink, but I think it would significantly increase the number of people receiving color correction (even if they did still have to download LCMS separately due to licensing or whatever).
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21st February 2018, 02:51 | #49117 | Link |
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Wow, EVR uses an ICC profile in Windows 10 now? That is new and great news, it is almost weird having Windows finally support color management. I remember recently thumbnails started being corrected but Windows assumed you had an sRGB display so it would convert anything tagged something besides sRGB to your profile as if your profile was sRGB (counter productive on my DCI-P3 displays). I need to do more experimentation with 1607.
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21st February 2018, 03:02 | #49118 | Link | |
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21st February 2018, 03:05 | #49119 | Link | |
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21st February 2018, 03:19 | #49120 | Link |
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Ah, it is just PotPlayer hacks then.
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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