Prince of Persia 3D: Underwater issues (transparency?) \ VOGONS

Prince of Persia 3D: Underwater issues (transparency?)

Topic actions

Post a reply

First post, by ZellSF

Posted on 2020-05-18, 12:31

ZellSF Offline

Rank l33t

Rank: l33t
Posts: 2414
Joined: 2006-01-01, 18:19

1) Install Prince of Persia 3D
2) Install Prince of Persia 3D 1.1 patch
3) Launch the game with pop3d.exe -l "geometry\rooms\ivorytwr"
4) Start a new game
5) Walk until you get to the pool and jump into it

With dgVoodoo you get this:
https://www.youtube.com/watch?v=Ets_T38I_hA
You can briefly see here what it's supposed to look like here:
https://www.youtube.com/watch?v=J1i98VY_0CQ&t=3m4s

Also resolution forcing crashes the game if QT4 is installed, some sort of conflict because the game and QT uses the same DLL in a weird way? If you copy the QT file (syswow64\QuickTime.qts) to the game directory and hack it to point to for example ddra2.dll (and make that a copy of dgVoodoo's ddraw.dll) then it won't crash.

Reply 1 of 6, by bloodem

Posted on 2020-05-19, 10:46

bloodem Offline

Rank Oldbie

Rank: Oldbie
Posts: 1612
Joined: 2020-01-17, 08:10
Location: Romania

Confirming issue, tried multiple dgVoodoo versions, same problem with POP3D

1 x PLCC-68 / 2 x PGA132 / 5 x Skt 3 / 9 x Skt 7 / 12 x SS7 / 1 x Skt 8 / 14 x Slot 1 / 5 x Slot A
5 x Skt 370 / 8 x Skt A / 2 x Skt 478 / 2 x Skt 754 / 3 x Skt 939 / 7 x LGA775 / 1 x LGA1155
Current PC: Ryzen 7 5800X3D
Backup PC: Core i7 7700k

Reply 2 of 6, by Dege

Posted on 2020-05-19, 20:58

Dege Offline

Rank l33t

Rank: l33t
Posts: 2848
Joined: 2003-09-04, 11:06

I didn't check out the QuickTime part but indeed underwater is bad. But not everywhere. It is in the Ivory palace level but is OK in the first level.
The game feeds DX with strange fog start/end values (fog "starts" behind the camera! 😀 ) so everything is in full fog under the water. I don't know why it is, I'll check it out on my Win7 machine later to see how it behaves natively.
Isn't it something with the 1.1 patch?

Reply 3 of 6, by bloodem

Posted on 2020-05-20, 07:39

bloodem Offline

Rank Oldbie

Rank: Oldbie
Posts: 1612
Joined: 2020-01-17, 08:10
Location: Romania

Hi Dege,

Indeed, the issue seems to only be present in the second level, the Ivory Tower.
I tested patch version 1.1 and it works fine on a native retro PC with GeForce 2 / GeForce 3 / GeForce 4 video cards running on Windows 98 with driver version 45.23.
Also, tried DDrawCompat v0.2.1 on Windows 10 (also with patch 1.1) and it doesn't exhibit the same behavior (however it's much slower than dgVoodooo)

Reply 4 of 6, by Dege

Posted on 2020-05-20, 08:44

Dege Offline

Rank l33t

Rank: l33t
Posts: 2848
Joined: 2003-09-04, 11:06

Thanks! Then I'll have to figure out what the difference between old hw and dgvoodoo. I tried some vendorid/deviceid as the debug output of the game reports what hw is detected, to no avail.

Reply 5 of 6, by bloodem

Posted on 2020-05-20, 14:21

bloodem Offline

Rank Oldbie

Rank: Oldbie
Posts: 1612
Joined: 2020-01-17, 08:10
Location: Romania

Thank YOU, Dege, for the extraordinary hard work! 😀

Reply 6 of 6, by SparkTR

Posted on 2021-05-27, 13:21

SparkTR Offline

Rank Newbie

Rank: Newbie
Posts: 16
Joined: 2015-08-16, 17:12

Hi, anybody know if this issue has been resolved yet?

Go to top of page Go to top of page

Back to dgVoodoo General

Main menu

Common searches