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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Wed Mar 27, 2019 10:01 pm 



Joined: 07 Mar 2016
Posts: 65
i just picked this up,
Image
Image

hopefully i can use it to mod ps1 games


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Thu Mar 28, 2019 12:04 am 



Joined: 19 Jul 2017
Posts: 1291
davidwhangchoi wrote:
i just picked this up,
Spoiler: show
Image
Image


hopefully i can use it to mod ps1 games

Later on, if you want something a little quieter and a little faster to initialize, get one of these boards, install it in your network adapter, and then use a 3.5" SATA disk (Or a 2.5" disk in a 3.5" adapter).


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Thu Mar 28, 2019 12:17 am 



Joined: 07 Mar 2016
Posts: 65
nmalinoski wrote:
davidwhangchoi wrote:
i just picked this up,
Spoiler: show
Image
Image


hopefully i can use it to mod ps1 games

Later on, if you want something a little quieter and a little faster to initialize, get one of these boards, install it in your network adapter, and then use a 3.5" SATA disk (Or a 2.5" disk in a 3.5" adapter).

thanks for the link!


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Thu Mar 28, 2019 3:24 pm 


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Joined: 19 Oct 2013
Posts: 329
Lawfer wrote:
You can do that? But I read that emulators got rid of the dithering without any patching?


I used no$psx and saw the dithering on/off differences in it.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Thu Mar 28, 2019 4:15 pm 


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Joined: 01 Dec 2006
Posts: 1925
cr4zymanz0r wrote:
Lawfer wrote:
You can do that? But I read that emulators got rid of the dithering without any patching?


I used no$psx and saw the dithering on/off differences in it.


I see, thank you very much!


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Thu Mar 28, 2019 4:54 pm 



Joined: 19 Jul 2017
Posts: 1291
A potential alternative to blanketly disabling dithering could be HD Retrovision's HDMizer. They recently showed off an algorithm that can mimic what happens to dithering when encoded to composite, while maintaining those crisp pixels.

Obviously it's nowhere near ready, but ostensibly something similar could be implemented in other video processors or in something like an internal HDMI[+RGB] mod.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 10:20 am 


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Joined: 01 Dec 2006
Posts: 1925
I tried using the "sed" program by dragging Suikoden II on the "sed.exe" file, but it doesn't seem like it does anything?

Also, I plan on only using the un-dithering patch with pure 2D games (so I won't use it with games such as Grandia or Arc the Lad III which uses characters sprites but 3D backgrounds), however some 2D games have sprite characters with pre-rendered backgrounds, how would the pre-rendered backgrounds be affected by the removal of the dithering?


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 12:29 pm 



Joined: 19 Jul 2017
Posts: 1291
Lawfer wrote:
I tried using the "sed" program by dragging Suikoden II on the "sed.exe" file, but it doesn't seem like it does anything?

sed is a commandline utility, ubiquitous in Unix/Linux OSes, and often used for text manipulation. It doesn't do anything when you drag a file onto it, because all that does is provide the program with a file path; you need to give it other parameters/commands in order to use it.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 1:01 pm 


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Joined: 01 Dec 2006
Posts: 1925
nmalinoski wrote:
Lawfer wrote:
I tried using the "sed" program by dragging Suikoden II on the "sed.exe" file, but it doesn't seem like it does anything?

sed is a commandline utility, ubiquitous in Unix/Linux OSes, and often used for text manipulation. It doesn't do anything when you drag a file onto it, because all that does is provide the program with a file path; you need to give it other parameters/commands in order to use it.


The black window shuts down as soon as I open it.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 2:07 pm 



Joined: 19 Jul 2017
Posts: 1291
Lawfer wrote:
nmalinoski wrote:
Lawfer wrote:
I tried using the "sed" program by dragging Suikoden II on the "sed.exe" file, but it doesn't seem like it does anything?

sed is a commandline utility, ubiquitous in Unix/Linux OSes, and often used for text manipulation. It doesn't do anything when you drag a file onto it, because all that does is provide the program with a file path; you need to give it other parameters/commands in order to use it.


The black window shuts down as soon as I open it.

Like I said, it's a commandline utility; you need to open a terminal, like cmd or powershell, to use it. Or write a script that executes it.

In Windows, if you try to run any commandline utility like that from the GUI, what happens is Windows necessarily and temporarily opens a terminal (that black window), which will only stay open as long as the program is running. Since you're not passing any parameters to sed (or just one or more file paths by dragging files onto the .exe), it's probably just spitting out its help text and exiting, so the terminal would only be open briefly.

Some programs, like nslookup, have interactive prompts. When these are launched from the GUI, the terminal will stay open because the program is still running, and it will close when the program exits. sed is not one of these applications.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 4:27 pm 


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There's README.txt in the zip file that clearly states to drag the ISO file to "Patch_PS1_dither.bat" :P


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 4:44 pm 


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cr4zymanz0r wrote:
There's README.txt in the zip file that clearly states to drag the ISO file to "Patch_PS1_dither.bat" :P


Which I did and it did patch it by converting all instances of "02" to "00", however I was under the assumption that "Patch_PS1_dither.bat" and the "sed.exe" were seperate? One is for standard convertion and the other one is for brute force conversion for the games with a more stubborn dithering?


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Tue Apr 02, 2019 8:02 pm 


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I think you're over-complicating things. All you do is drag the ISO file to the Patch_PS1_dither.bat batch file and it generates the patched ISO. SED is the program used for patching but it does nothing on its own. The batch file tells SED the appropriate way to patch the ISO. That's the only way to patch with the utility I put together. There's no varying levels of aggression on the patching with the utility.

The only way it's more complicated is if you decide to manually patch things yourself with a hex editor, which then isn't using my patcher regardless, or using Chris Covell's original guide for figuring out your own action replay codes.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Wed Apr 03, 2019 6:12 am 


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I see, have you tested to see how the removal of the dithering affects games like Tales of Destiny II or Saga Fontier 2 who uses (still) pre-drawn (pre-rendered?) backgrounds?

Here's a comparison I made of Suikogaiden Vol. 1: Swordsman of Harmonia, dithered on the left and un-dithered on the right:

Image

Onthe other hand, Suikoden II removal of the dithering doesn't do much as the background art seems to be pre-dithered, so the removal of the dithering only removes dithering in the characters portraits and some of the dithering during combat scenes in areas where the background is in 3D, dithered on the left and un-dithered on the right:

Image

And I also tried with Ace Combat 3: Electrosphere, un-dithered on the left and dithered on the right:

Image

I akso tried with Langrisser IV, The Legend of Dragoon and Tales of Phantasia, but it doesn't seem like it does anything for these games.


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 Post subject: Re: Disabling PS1 hardware dithering (better looking 2D)
PostPosted: Thu Jul 11, 2019 6:32 am 



Joined: 23 May 2018
Posts: 9
Oh that's awesome! Thanks cr4zymanz0r for this patch, truly makes the games look better on HD display.
But I have one little issue I hope someone can help me with. The patch works perfectly with emulators, but somehow doesn't work on psp through the official pops emulator. It seems to be forcing the dithering on games that use it, not matter if patched or not...
Do you know if they might be using a different way of detecting the dithering that your patch won't fix?
Could there be a way to patch it manually with the pops cheat engine?
I tried it on xenogears mainly, and the patched .pbp file has dithering only on psp.
Interestingly, when increasing the gamma in the pops options, you can see that the dithering is on the whole screen, including the black bars, which makes me think it's forced dithering.


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