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Arcade OSD, super resolutions and porch values

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jimj:
First, I apologize for asking something I'm sure has been asked before, but with Google as my witness I can find a post on this...  :embarassed:

Second, when running Arcade OSD with a non-super mode I see a cross hatch display with a white border around the entire display and a white X that's centered on the screen as is seen in this picture (I'm to able to post my own pictures in this forum):

--- Quote from: Arroyo on September 18, 2019, 12:04:53 am ---...


--- End quote ---

But when I edit a super mode there are only white lines on the top and bottom of the screen and the diagonal white lines no longer form an X through the center of the screen, instead they make squished white triangles on the left and right side of the screen as shown in this picture:

--- Quote from: Jontox on June 29, 2021, 06:02:22 pm ---

--- End quote ---
I assume not having an X or white lines on the side is a normal/expected side-effect of using super resolutions?

Third, I've seen many posts about changing the front and back porch values to change the horizontal positioning of the screen.  However I can't change porch values for super resolutions.  I assume this is a normal/expected side-effect of using super resolutions?

xbrunox:
If u use groovymame super resolution are generated at the moment using crt0 settings in yours mame. Ini

So for change porches in groovymame u must edit that line in mame. Ini

makya:
The white lines and cross you describe are the same for me, I assume this is normal.

Modifying super resolutions porches works the same as for any resolution. What makes you think it's not possible?

Well if you are trying to change your current desktop resolution however it will look like your changes have no effect.

jimj:

--- Quote from: makya on January 29, 2022, 07:28:01 am ---The white lines and cross you describe are the same for me, I assume this is normal.

Modifying super resolutions porches works the same as for any resolution. What makes you think it's not possible?

Well if you are trying to change your current desktop resolution however it will looks like your changes have no effect.

--- End quote ---

Thanks for confirming what I see is normal.  You also prompted me to figure out my porch problem.  It was a user error of course.  :)  For some reason with my super resolution modes I went into the "Edit modeline" menu when the porch settings are actually in the "Horizontal geometry" menu.

Now maybe I'll have chance of following the instructions here to use the porch settings to shrink my screen horizontally a couple centimeters to avoid the right side horizontal linearity issue (squeezed right side issue) with my KT-2914 Betson-Kortek 27" multisync monitor.

Another thing I'm not clear on yet are the pros/cons of using proch values to shrink my display horizontally versus just using the Betson monitor's OSD controls to achieve the same thing.  I assume if I had a good understanding of how to correctly use modelines, that by using porch values I could shrink the display for just the games that are affected by the linearity issue whereas using the Betson OSD controls would affect all games.

makya:
The "edit modeline" menu allows to modify porches as well, just another way to do it.

Anyway be aware that modifying modelines in arcadeosd should not have any effect into groovymame, assuming you installed crtemudriver in dynamic mode.

The way I  use customized modelines is, like you are assuming, to avoid constant tinkering with monitor osd or pots.

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