Scaling/aspect ratio issue

[Former user]

Original [issue 113](https://code.google.com/p/genplus-gx/issues/detail?id=113) created by Darkone180 on 2010-08-07T01:26:54.000Z:

so recently i went to go to play "Virtua Racer" and i noticed something,that there is a glitch in the "Sega" logo/font,so i thought maybe it was using a corrected aspect ratio when in the "Original" or something of that nature or maybe thinking the emulator was a ntsc-u,i thought maybe this was a minor glitch in the scaling so i changed the aspect ratio to "Manual Scale" and it seems to have fix the problem,i noticed this in a few other games of the "E" region well anyways here are some of the details,if you need me to give you a few names of some of the other games,then do say so \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Aspect:Manual Scale Screen Position:(+05,-5) Screen Scaling:(-13,-12) ----------------------

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Aspect:Original(4:3) Screen Position:(+05,-5) -------------------------

[Former user]

Comment # 1 originally posted by Darkone180 on 2010-08-07T01:27:50.000Z:

btw very sorry these are the best screenshots i can get

[Former user]

Comment # 2 originally posted by Darkone180 on 2010-08-07T01:29:25.000Z:

oh one other thing in original aspect ratio,it also does the same thing to text in some games of that region

[Former user]

Comment # 3 originally posted by Darkone180 on 2010-08-07T05:26:09.000Z:

virtua racing\*,ive also seen this happening in ntsc-u games with scaling on /=

[Former user]

Comment # 4 originally posted by ekeeke31 on 2010-08-07T10:46:00.000Z:

You never played these games on a real Mega Drive or Genesis, do you ?

Because this is how it was displayed, the original console did not have scaling hardware and the active video width was always the same, just horizontal resolution could be changed: as a result, games using the 256 pixels-wide mode would appear stretched like that on TV screen, for most of them it is only visible at sega logo because they used some generic sega routine that was designed for 320 pixels-wide mode and they didn't go into the trouble of modifying it.

So this is perfectly normal and accurate behavior.

[Former user]

Comment # 5 originally posted by Darkone180 on 2010-08-07T15:54:10.000Z:

actually i used to own the models 1 and 2 genesis's and the model 1 and 2 sega cd's,but yea ive never played the european version of "virtua racing" nor the sega mega drive version,i've only got to try out the sega 32x ntsc-u version,and yeah i kind expected it to be something like that causing this issue,so not to sound like a douche,is there a way to work around this issue?im guessing that you or someone working on the emulator would have to create a corrected form of the 4:3 aspect ratio correct?more so a forced form of it?

[Former user]

Comment # 6 originally posted by ekeeke31 on 2010-08-07T16:41:25.000Z:

Again, you didn't understand, it IS already correct, there are NO ISSUES and this is not because it is the PAL version, it does the same on any genesis version (regarding 32x version, this is a whole different code and all 32x games are using the 320 pixels mode so they are not affected), it's just the way the game was programmed.

And the way to work around that (if you don't like how it is stretched on a title screen that is displayed like maybe 2 seconds, the rest of the game being fine !) is already there, you even found it yourself: use STRETCHED aspect and asjust the scale factors. However, this is definitively NOT accurate, there is no way I'm gonna make this default scaling, the option is there for a good reason.

[Former user]

Comment # 7 originally posted by ekeeke31 on 2010-08-07T17:18:04.000Z:

Regarding PAL games being stretched VERTICALLY, this is also perfectly normal, PAL standard has more lines than NTSC but vertical resolution is genereally fixed, which means that, on a PAL Mega Drive, games will be displayed with black bars at top/bottom of the TV screen.

If you don't like that, force the console region to USA or JAPAN in emulator settings to emulate a NTSC console. When set to AUTO, the emulator automatically detects the appropriate console region based on the ROM you just loaded.

If the game does not like that, it means it is region protected and will only run on a PAL Mega Drive, your only solutions is either to patch the ROM, use appropriate Game Genie codes (if you know what you are doing) or simply use NTSC version of the game.