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5th February 2017, 19:52 | #42281 | Link |
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Did somebody already tested if that new Maxwell Compute Optimization mode (most probably different software async sheduling mode) has any impact on the Cuda Hybrid Decoder or MadVRs NNEDI3 latency wise or in general on Cuvid OpenCL/Directcompute/Cuda on for example GM204 in a multi CPU/GPU Render workflow ?
Does it bring a measurable stability improvement ?
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 5th February 2017 at 20:07. |
5th February 2017, 19:54 | #42282 | Link | ||
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Quote:
it doesn't seem to do the same for other sources where the line is not exactly 1 pixel. to be honest i haven't found any problem with NGU pixart for other sources yet. it looks like and set and forget scaler. or with other words i haven't found a "miss" for normal sources yet. and of cause the x2 scaled image doesn't need a 2x line but some more close to it. Quote:
notable here is that the issue is mostly in the top left and the image is shifted to the top left. and NGU pixart low and medium should work too or not? running NGU medium AND NGU low on chroma to sounds ridiculously expensive. if bicubic 60 Ar can't deal with it than there should be another cheap way to fix. if it is 2x NGU "super low" x2 or something else doesn't matter to me as long as it doesn't add the same artifacts. |
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5th February 2017, 20:06 | #42283 | Link | |||
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But this issue shows that chroma doubling quality *does* sometimes matter, which is also why when choosing NGU Very High, "let madVR decide" does activate NGU for chroma doubling, too. |
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5th February 2017, 20:14 | #42284 | Link | ||
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if NGU low is the fastest we have right now why not double low. i think doubling chroma again is fine if it avoids issue like this. but the performance cost is very high. something that is never going to happen with super XBR BTW. Quote:
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5th February 2017, 20:15 | #42285 | Link |
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Performance is one thing stability another not always more performance means better/smoother render output and stability over time and that option seems to conquer AMD in those regards finally to overcome/workaround Hardware restrictions that most probably is by default enabled on Paxwell and now found it's way into the Maxwell Driver.
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 5th February 2017 at 20:26. |
5th February 2017, 20:20 | #42287 | Link | |
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As I mentioned before, I have a 1440p screen and going from 1080p to 2160p and then back down to 1440p is a huge waste of resources. I don't really like doublers, and prefer scalers that can go from point A to point B in a single pass. Doubling goes from point A to point C and then back to point B. Double then downscale... what's the point? NGU Pixart does look quite good though, and basically fixes the issues I had with NGU, i.e., that it was too sharp and aliased. Last edited by AngelGraves13; 5th February 2017 at 20:23. |
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5th February 2017, 20:42 | #42288 | Link | |
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Test patterns: Grayscale yuv444p16le perceptually spaced gradient v2.1 (8-bit version), Multicolor yuv444p16le perceptually spaced gradient v2.1 (8-bit version) |
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5th February 2017, 21:01 | #42289 | Link |
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Gonna do some tests with Optix and the Hybrid H.265 Decoder while running MadVR NNEDI3
Though Optix most probably would be already efficient seeing how the current driver stalls it while using CPU/GPU simultaneously.
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 5th February 2017 at 21:22. |
5th February 2017, 21:16 | #42290 | Link |
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@madshi
Just tested how it plays out. The new NGU looks best at Very High with my own video materials (mostly anime).
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5th February 2017, 21:24 | #42291 | Link |
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on second thought: NGU Pix new algo doesn't work well enough for 1440P.
The idea is that it looks much better than all the other algorithms with Anime that comes from a low quality source but you will need something stronger than a GTX 1080 to use it at very high in both chroma and image upscaling.
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5th February 2017, 22:35 | #42292 | Link |
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is there any new addition or tweaking of chroma upscaling with the new test build?
btw I have 26ms average stats with NGU medium for chroma upsampling, 35ms for high and >100ms for the very high setting (no other scaling involved; regular build). how come theres such a big difference for very high?
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5th February 2017, 23:20 | #42293 | Link | ||
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True.
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Very high has always been much more expensive than High, when using NGU. At some point I might add one more quality level between High and Very High, but now it is what it is. |
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5th February 2017, 23:38 | #42294 | Link |
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what I mean is does chroma upsampling with NGU pixelart now look slightly different that with the regular scaler? (or will it be that way in the future)
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6th February 2017, 00:21 | #42296 | Link |
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yeah, but since I hardly do any scaling atm, I am more interested just in changes of chroma upsampling and wondered if there are any differences between the regular algo and pixelart as well when it comes just to chroma upsampling
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6th February 2017, 00:52 | #42297 | Link | |
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There is slight loss of sharpness to my eyes with NGU pixart set to Medium. What really surprised me is there isn't a huge drop in quality between Very High to Medium. It also saves an additional 5 to 7 milliseconds of render time at Medium which is impressive. If I had less capable hardware, I'd have no issue with using the Medium setting. I'll stick with Very High for now with SD, because I can. |
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6th February 2017, 00:58 | #42298 | Link | |
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Any chance to release its sources? It would be very useful with emulators! |
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6th February 2017, 01:06 | #42299 | Link | |
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NGU pixart is probably good to replace NNEDI3. I only use NNEDI3 at 16 neurons - NGU very high is slower than NNEDI at 16 neurons in same conditions. Example : NNEDI3 at 16 neurons is slower than NGU at high NGU pixart at very high takes double the time to process compared to NNEDI3 at 16 neurons. More precise examples: NGU high ~5ms NNEDI3 at 16 neurons ~8ms NGU very high ~16ms If everything else was kept the same.
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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