Tomb Raider on PowerVR jitter issue \ VOGONS

Tomb Raider on PowerVR jitter issue

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First post, by bjt

Posted on 2016-02-17, 10:01

bjt Offline

Rank Oldbie

Rank: Oldbie
Posts: 1460
Joined: 2013-02-06, 10:40
Location: UK

I'm seeing an issue whereby anytime anything on screen moves, it jitters between its new and old position. The best way of describing it is "two steps forward, one step back".
If I had to guess I'd say there's a problem with buffer flipping or upload not being synchronised correctly. I've tried it with L1 cache disabled in case it's speed related, but no difference.
Using the PowerVR version of TR from an original CD.

Host card is a PCI GF2 MX400.

Other specs:

K6-3 400
256MB
AWE64 Gold

Ultimate Race works find on PVR in Windows.
Any ideas welcome.

Reply 1 of 2, by vetz

Posted on 2016-02-17, 11:28

vetz Offline

Rank l33t

Rank: l33t
Posts: 4459
Joined: 2012-04-23, 17:13

Never experienced this problem. The Geforce cards are known to be a bit tricky with the PowerVR cards in Direct3D, maybe this also affects Tomb Raider which is the only PowerSGL DOS game. I'd try to switch out the GF2 and check.

3D Accelerated Games List (Proprietary APIs - No 3DFX/Direct3D)
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Reply 2 of 2, by bjt

Posted on 2016-02-17, 13:28

bjt Offline

Rank Oldbie

Rank: Oldbie
Posts: 1460
Joined: 2013-02-06, 10:40
Location: UK

Bummer. Really like the GF2 so I might have to play this game in software or Glide instead.

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