Hi,h ow can I manually adjust the screen size of a game, e.g. to stretch the top part of the screen, to hide the black stripe?
I’m afraid i did not understand, but I’ll try to answer.
If you want to zoom the came content when the bezel is enabled, use:
If this is not the answer you were looking for, please post a screenshot to let us understand
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what I want is not to zoom in, but to be able to stretch the game screen to cover those black stripes.
Gotcha, this is not implemented 
, but maybe it is something i’ve on my todo list (actually, change content aspect only)
A couple of questions:
- What is that game, so that i can try myself why, in the first place, you have those bars?
- What happens if you use those options in Mega Bezel, does the image stretch and changes aspect or the bezel itself will shrink?
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It depends on parameter settings, but usually the image is just stretched, and the aspect and screen size does not change.
The screen size does change when the integer scaling parameter is on.
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Rival Turf (Snes) ,but many more Snes games,Final Fight,Street Fighters 2 and more,some only with black stripe at the top,or only at the bottom,that’s why the option to adjust manually.
Ok, so I think i could add two more options, something like:
[Content geometry overrides]
– Aspect
– y-shift
So that you can change the game “internal” Aspect independently from the bezel and stretch or compress alongside the y axis, and once you have stretched the content, you can further center it vertically with y-shift
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Cool 
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Hey @kokoko3k how are you doing? It’s been awhile since I used your shader, but it seems that one of the recent updates caused some weird jagged edges and unwanted color along the inner bezel frame:
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.
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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.
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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.
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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.
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Damn Mastersystem. 
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
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,
Yes, perhaps at each person’s choice, since you are modifying the aspect ratio of the original game.