low quality at certain cutscenes on gamecube and wii games
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04-04-2019, 03:18 AM
sorry. i didn't mean to come off hostile and i'm certainly not questioning your expertise.
but, i'm still confused about the scenario you describe. no one would deliberately perform an interpolation that way. there's no reason anyone would resize an image to some intermediate size before the interpolation step. 04-04-2019, 04:12 AM
I didn't say it was deliberate simply a ignored side effect of IR. What do you mean with "intermediate"? The images need to be resampled from native to target resolution, 720x480 being native in this case, but as you can see there's no filtering going on on the left-most sample.
I will wait on JosJuice word to open an issue ticket. 04-04-2019, 04:17 AM
04-06-2019, 07:00 PM
(04-04-2019, 04:12 AM)eckso Wrote: I didn't say it was deliberate simply a ignored side effect of IR. what side effect of IR are you referring to? Dolphin is for sure interpolating when scaling up. Quote:What do you mean with "intermediate"? The images need to be resampled from native to target resolution, 720x480 being native in this case, but as you can see there's no filtering going on on the left-most sample. In your original post, you've laid out a scenario where one would interpolate a "pixelated" image to a larger size. Pixelation occurs when one scales up an image with no interpolation. Thus, your scenario implies there is some "intermediate" size that one first scales to (for the pixelation to occur) then you'd scale that up with resampling, i.e. interpolation. That scenario makes no sense from a design perspective. Now, if you mean the source image is already pixelated, then unless you have means to detect pixelation and can accurate approximate the original resolution, you're kinda stuck with it. Best you can do is to smooth out the image by applying low pass filter/blurring (note that interpolation is essentially a low pass filtering). 04-06-2019, 08:07 PM
I'm not sure where you want to get at, did you check the screenshots? or maybe check online videos.
Pixelation is not something that needs to be measured, native resolution is known, so only an interpolation kernel is needed, they could parse FMVs (probably not easy) and selectively interpolate those from native, not from IR deviation. Regarding your intermediate theory, no, the best you can do is not smudge the pixels all over, but bring it down to native resolution and scale up properly, maybe with a debilinear prefilter which I guess uses a laplacian for the blurriness but haven't looked into it. 04-10-2020, 03:36 AM
Hi all, while running at high internal resolutions I noticed that the prerendered cinematics for the GC/Wii Sonic games are far sharper than what I think looks decent for footage stuck at 480p, and I discovered what might be a good remedy. Enabling the video enhancement force texture filtering seems to soften the graphics enough to make such cinematics appear as they do on hardware or when IR is native. I'm not sure what filtering method that "force" option uses and I haven't tested much to find graphics that this breaks, but the result looks similar to eckso's and other bilinear filter examples from emulators of consoles that are mostly 2D sprite-dominant. Pretty thrilling.
This thread seemed to be the closest thing to a discussion on the topic I could fine while searching for an answer myself, but I was then encouraged to try the above after searching for "filter" on the GameINI page.
Machines running Dolphin 5.0-6467 x64 onward:
#1 Windows 8.1 x64 | Core i7-4770 @ 3.4GHz | GeForce GTX645 | 12GB (4*3) DDR3 #2 Windows 10 x64 | Core i5-6400 @ 2.7GHz | Radeon RX570 (main) + GeForce GT730 (alt)| 8GB (4*2) DDR4 04-11-2020, 02:50 AM
Keep in mind, however, that "Force Texture Filtering" option can wreak havoc and completely mess up pre-rendered video output on a number of games...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 32 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2) 04-11-2020, 03:37 PM
Thanks mbc07, I haven't seen a list but I'll keep an eye out for such problems.
Machines running Dolphin 5.0-6467 x64 onward:
#1 Windows 8.1 x64 | Core i7-4770 @ 3.4GHz | GeForce GTX645 | 12GB (4*3) DDR3 #2 Windows 10 x64 | Core i5-6400 @ 2.7GHz | Radeon RX570 (main) + GeForce GT730 (alt)| 8GB (4*2) DDR4 |
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