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Screenshots blurry in Professor Pac-Man #113463 05/23/18 11:22 AM
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ShadowMan44 Offline OP
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Hey there my fellow forum users, I'd like to bring up this little known bug (little known being the fact that I'm the first person to actually bring it up). You see, when you save a screenshot in "Professor Pac-Man" they come out all blurry. Is there a fix for this? Does the rom need to be completely redumped or is there a setting that I'm missing?

Re: Screenshots blurry in Professor Pac-Man [Re: ShadowMan44] #113467 05/23/18 07:24 PM
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Is the screenshot saved with F12 or by using PrtSc and pasting into an image editor? PrtSc (or Alt+PrtSc) will save the exact same image being displayed on in the MAME window whereas the former (F12) will only be the game's original low resolution output (mame/snap/profpac/0000.png etc.)

Re: Screenshots blurry in Professor Pac-Man [Re: ShadowMan44] #113468 05/23/18 09:54 PM
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ShadowMan44 Offline OP
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I was using the F12 key the whole time, the PNG files come out all blurry anyway. Here is a screenshot of the "correct" PNG file

[Linked Image]

Last edited by ShadowMan44; 05/23/18 09:55 PM.
Re: Screenshots blurry in Professor Pac-Man [Re: ShadowMan44] #113480 05/27/18 09:26 PM
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MASH Offline
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Can you set maximize, filter and snapbilinear to '0' in the mame.ini file. If you not have a mame.ini file in den folder, then create it
with the command mame -cc

mame.ini:
snapbilinear 0
maximize 0
filter 0

Is the snapshot still blurry?

Re: Screenshots blurry in Professor Pac-Man [Re: MASH] #113481 05/28/18 01:06 AM
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ShadowMan44 Offline OP
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Originally Posted by MASH
Can you set maximize, filter and snapbilinear to '0' in the mame.ini file. If you not have a mame.ini file in den folder, then create it
with the command mame -cc

mame.ini:
snapbilinear 0
maximize 0
filter 0

Is the snapshot still blurry?


I have almost no idea what you just said. What do you mean by "command mame -cc"? Do I use command prompt? Oh and my Mame doesn't even have a "den" folder, I've never heard of one of those until now.
EDIT: So I went ahead and saved a config file of profpac and modified it with what the original message said to do and...

It's not blurry anymore, but it's stretched and I can't figure out how to fix it.

[Linked Image]

Last edited by ShadowMan44; 05/28/18 01:30 AM.
Re: Screenshots blurry in Professor Pac-Man [Re: ShadowMan44] #113482 05/28/18 06:13 AM
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MASH Offline
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>>What do you mean by "command mame -cc"?

Open a Command Prompt/Powershell.
Jump into your mame directory
> cd mame
Type
> mame -cc
Now you have the mame.ini file and can edit it.

Re: Screenshots blurry in Professor Pac-Man [Re: MASH] #113483 05/28/18 07:04 AM
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ShadowMan44 Offline OP
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Originally Posted by MASH
>>What do you mean by "command mame -cc"?

Open a Command Prompt/Powershell.
Jump into your mame directory
> cd mame
Type
> mame -cc
Now you have the mame.ini file and can edit it.



Alright, I made that MAME.ini file even though the Profpac.INI file I mentioned earlier did seem to "fix" the issue. But going back to what I said, I can't seem to fix the stretching of the screenshots now.

Re: Screenshots blurry in Professor Pac-Man [Re: ShadowMan44] #113484 05/28/18 07:19 AM
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Vas Crabb Offline
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Many systems don't have square pixels. You'll either end up with "stretched" screenshots if you preserve the original pixels, or "blurry" screenshots if you stretch the pixels non-proportionally to get the correct aspect ratio.

Re: Screenshots blurry in Professor Pac-Man [Re: Vas Crabb] #113485 05/28/18 07:28 AM
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ShadowMan44 Offline OP
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Originally Posted by Vas Crabb
Many systems don't have square pixels. You'll either end up with "stretched" screenshots if you preserve the original pixels, or "blurry" screenshots if you stretch the pixels non-proportionally to get the correct aspect ratio.

So what do I do? Is this just something I'll have to live with or can the rom be re-dumped to fix it? (Not saying that it should be dumped right this minute)

Re: Screenshots blurry in Professor Pac-Man [Re: ShadowMan44] #113486 05/28/18 08:03 AM
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Vas Crabb Offline
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Originally Posted by ShadowMan44
Originally Posted by Vas Crabb
Many systems don't have square pixels. You'll either end up with "stretched" screenshots if you preserve the original pixels, or "blurry" screenshots if you stretch the pixels non-proportionally to get the correct aspect ratio.

So what do I do? Is this just something I'll have to live with or can the rom be re-dumped to fix it? (Not saying that it should be dumped right this minute)

There's nothing to fix. The original system did not produce square pixels. This is true of many if not most arcade systems, and also many PC video modes. For example CGA 320*200 and VGA 640*400 resolutions, when stretched to fit a standard 4*3 display, have pixels that are taller than they are wide. The Macintosh was the odd one out for only using video modes with square pixels, even the Apple Lisa didn't have square pixels.

You have to decide whether you want the original pixels from the system, which will give you an image at a different aspect ratio, which you're calling "stretched", or you want it resampled to the intended aspect ratio and filtered, which you're calling "blurry". You're not going to get square pixels at the correct aspect ratio from a system that doesn't produce square pixels at the correct aspect ratio.

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