Koko-aio shader discussions and updates

[kokoko3k]

Yeah, i know that; it is the ambient light bleeding over the tube when the option to colorize the bezel is enabled and it is visible in your presets because you push ambient light very hard.

What version is it?

It has been corrected for sure in the git build since a while; i can’t remember if the version shipped with retroarch was affected. (edit:it is)

If you don’t want to use the dev build with the fix, you can safely turn off the option in ambient light named “colorize bezel” and have the previous behaviour.

this commit is safe to use and provides the fix

zip here

[kokoko3k]

@jt.cs @DreamOnNeon

Whoah, it was harder than expected…

…so please, anybody interested, test the dev build to check everything still works properly!

@Starman99x: Glitches were not totally absent even with the fix, so i temporally disabled that colorizing feature.

[DreamOnNeon]

Thank you so much, Koko, for taking the time to work on adding this feature. I was totally unaware you had even decided to take this on so I can’t express enough how thankful I am to be surprised with this

So using the original video from before, which was a 540p 16:9 video that was letterboxed (god i hope I’m using the correct terminology here) I loaded up your shaders.

This is the image before I made any aspect ratio adjustment

And here it is after I have made the adjustment

I would say that works pretty darn well and will be great for watching any of the retro content I come across if it should be uploaded in 16:9. Thank you again so much for the added feature and for the hard work you put into it.

[Noromu]

Thanks for this implementation

[Noromu]

To make it perfect it would be necessary to add the option “Horizontal Position”

There are some games in e.g. Master Sysem with these black stripes on the sides instead of top or bottom.

[kokoko3k]

Damn Mastersystem.

[Noromu]

Lol,Snes also has several games like Out of This World (Another World),Jurassic Park,Prince of Persia and more and other systems,so I think it would be a good choice

[kokoko3k]

Btw, it should be trivial to add at this point, but still I wonder if this is a valid use case.

For x aspect ratio, there is the motivation of watching 16:9 content on 4:3 tube, but cutting black borders (x or y) that way, means modifying the creator’s intended aspect.

I can understand the need to just shift the image left/right for sega mastersysyem titles.

Aldo, for black borders all around, when using bezels, you can zoom the whole content with ‘zoom image’ parameter in bezel options group.

EDIT

PS: I see you’re using Duimon’s backgrounds.

Are they from the koko aio additional artwork repo or you’ve made it yourself?

Just asking because probably I’ve to fix reflection offsets a bit on those presets now,

[Noromu]

Yes, perhaps at each person’s choice, since you are modifying the aspect ratio of the original game.

[kokoko3k]

Horizontal shifting is in the latest git (not perfect, but usable).

About horizontal stretch, i decided to add a generic “zoom” control which works even without bezel (maybe i’ll ditch bezel zoom control), that, alongside the aspect ratio control should allow everything.

eg: Lionheart expanded horizontally via aspect + zoom

[carlos]

in the core options to play master system there is an option to automatically disappear these bands on the left side of the screen

[soqueroeu]

@kokoko3k

Hey @kokoko3k , how these backlight work? Can this feature run with @HyperspaceMadness MegaBezel Shader?

[HyperspaceMadness]

@soqueroeu

Can this feature run with @HyperspaceMadness MegaBezel Shader?

This feature isn’t there yet, but it has been planned for some time, so will come eventually, maybe this year

[kongmao45678]

The latest development version, the preset in the picture below is a bit abnormal, please take a look, thank you.

[kokoko3k]

No problem, I understood why it happened. Will fix today, thanks.

[kokoko3k]

It works by sampling a lowres version of the picture alongside the border of the imaginary screen, then it puts some virtual leds (actually smooth circles) upon it with the same color of the sampled zone. Those circles color/size (light/power) and border sharpness (falloff) are controlled by user parameters and their colors will eventually sum up each other.

In every next frame that color is also averaged with particular strategies with the previous one to make the fades slow or fast over time, depending on user preference.

This ensures that the led lights does not distract from the main game, but for the very same reason, some heuristic code is also used to detect when the picture/scene has changed so that the fades will be faster in that case.

Seems complicated? Yes, it has been a pita, but i’ve’had already wrote part of that code for arduino to drive real leds under my real lcd

Btw the code is solid now and reusing it into @HyperspaceMadness’ s MegaBezel should be definitely possible!

[Noromu]

Thanks,it’s perfect

[kokoko3k]

Wops sorry, I forgot to inform you, the issue has been fixed.

[kokoko3k]

I’ve reimplemented the colorization feature, and now it should not leak anymore. Apart from the colorization taken from the ambient, there are more parameters to play with for what concerns the bezel, like the reflection blurriness, strengths and specular reflections strength.

[Starman99x]

That’s very cool. I think I should disable this feature in my RGB presets anyway, since the idea doesn’t fit this feature. I’ll update the presets right away.

Speaking of which! There’s some sweet stuff coming to koko community presets by @soqueroeu here are some leaks:

There’s even new portrait overlays:

@kokoko3k I hope, if possible, you’d make an automatic solution for these type of overlays, so for example, when rotating the display to portrait mode while using lets say, FBNeo horizontal, then the shader will auto switch to FBNeo portrait.

I think Duimon implemented a similar feature in the Duimon mega bezel packs.