Widescreen Hacks

Discussion in 'Sega Dreamcast Development and Research' started by S4pph4rad, Oct 20, 2015.

  1. Esppiral

    Esppiral Spirited Member

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    It is very game dependant, there are plenty of games that renders everything in the widescreen area (and beyond), while others will clip geometry outside te 4:3 area.

    I guess it depends on how the game calculates the frustum planes.

    Dead or Alive for instance (among many others) will render everything on screen no matter how wide you make de fov, while others like Half life or Quake 3 will clip from the first pixel outside the 4:3 area.

    Here is an example, of Nullcd's buit in widescreen hack vs the CB-AR codes posted here, both running on the same emulator.

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    [​IMG]

    Notice how once the hack is applied the game will render everything on screen, its like if it calculates the frustum planes from one of the values whe have changed.

    That's not the case with other games.



    Few examples of games running in 21:9 with these hacks, and everything is rendered.

    [​IMG]

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  2. Roareye

    Roareye Member

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    Sorry Espirral, I meant making the 16:9 size fit the screen, I wasn't referring to clipping.
    I'm noticing on Shenmue with both the widescreen and no clipping cheats on that there is still a left and right border, slightly thicker on the left hand side.

    I'm sure this was mentioned earlier in the topic and it may have to do with how the DC outputs its video signal.
     
  3. S4pph4rad

    S4pph4rad Site Supporter 2015

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    That's the video signal, correct. The DC outputs some additional data to the left and right of the 'visible' area when connected via VGA, so if you're on a display wider than 4x3 aspect you'll see it. Some TVs have options to manually adjust this, changing the horizontal centering and scale, but if yours does not then this doesn't help. Mine has those options, but unfortunately it can't push the video all the way to the left.

    I suspect that there might be ways to get a bit more control over the video. Sturmwind has video options that let you manually move its visible area all the way to the left or right, but I'm not sure how that actually works.
     
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  4. Roareye

    Roareye Member

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    Ah, so its not something that we could compensate for by adding making a slightly altered VGA widescreen code so it fills a 16:9 display? If it is, whats the best way to modify the codes (if there's a replicatable way to apply a change across the known codes)?

    Also Shenmue's no clipping code still produces some clipping at the sides of objects (such as street lamps or the items in Tomato) but people don't clip. Is this normal on hardware/for the code in general?
     
  5. S4pph4rad

    S4pph4rad Site Supporter 2015

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    I don't think it's possible, but I'm not certain. Does anyone know of any DC games with a stretch feature that changes the scale of the video output? I know Sturmwind can move it around the entire visible area, but not scale it. If there's some kind of evidence that it's possible (a game that does it) then maybe I could research how to get other games to do it. But as far as I know, it's not possible. It IS possible to change the border color to something other than black, the boot animation does that and there are SDK calls for it. But I don't know of any game doing that either.
     
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  6. RaZiel

    RaZiel Enthusiastic Member

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    Any chance of a compilation of all these? I plan on making a VMU save with all of them then a Dreamexplorer CDI so others can just install it to a VMU.
     
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  7. TerdFerguson

    TerdFerguson Peppy Member

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    I would be interested in working with you on this

    The save could be uploaded to http://dreampipe.net or particularly http://dreampipe.net/dpwww/upload , allowing others to obtain the save without needing to go out, buy some CD-Rs and burn it just for one ~4kb VMS file. I understand many people do not have online setups, but if you play Dreamcast still you really should be joining all of us online. That's where the fun is imo :-D
     
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  8. Anthony817

    Anthony817 Gutsy Member

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    Actually, yes, it is completely patched to have more responsive controls as well. Most people can tell you and, I am sure you also know yourself how bad the controls were for the original. They made the game much more precise. It is quite literally the ultimate version of the game to have, and this now means that it kicks the HD ports ass since it is now widescreen. Hell, even emulating this version in HD on PC would be superior to the HD port. Why they didn't port this version instead of the original European version I will never know.

     
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  9. RaZiel

    RaZiel Enthusiastic Member

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    Yea I bought this game just to get a decent rip out there. While Pavlik did a great job with their work polishing the turd Stone Arts released. I admit the MP3 repack version was a great way of improving what was out there without having the original disc of GDI dump. And the 99min rip I did has all the language files that are missing from all other rips as well as the semi-useless Dream Passport is patched but with DreamCall out it may not be as useless. I had a birch of a time with the protection but in the end nothing was ripped and only the audio was taken from 44k stereo to 32k stereo and the rest still in tact. The only "downfall" is it required a 99min disc but they are easy enough to get.


    EDIT

    But reading your snippet you posted I wonder if I can make it all English audio instead of Japanese just for fun? I have two of the "standard" variants as before I got De La I rocked the Euro version in preference in music over the US version but I have that as well for collecting and such.
     
  10. Radaron

    Radaron Member

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    Hmm... Gotta try this, although I played European version many times and never had any problem with controls or anything..
     

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