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PowerVR Fun Thread

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Reply 1040 of 1096, by Gamecollector

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IIRC F1 Racing Simulation from Ubi-Soft supports glide and d3d only.

P.S. Any SGL game imports sgl.dll functions so has "sgl_create_screen_device" in the dump. Theoretically...

Asus P4P800 SE/Pentium4 3.2E/2 Gb DDR400B,
Radeon HD3850 Agp (Sapphire), Catalyst 14.4 (XpProSp3).
Voodoo2 12 MB SLI, Win2k drivers 1.02.00 (XpProSp3).

Reply 1041 of 1096, by DigiMind

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JustJulião wrote on 2023-03-03, 20:32:

Wow I've never seen this.
Can you play at a lower res. and tell if it changes something ?
Generally speaking, stay away from S3 cards for PowerVR gaming, it's among the slowest. Verite is fine.

Squares scale with different resolutions, so they definitely have the same size in pixels and yeah, these are tiles 😁
Will read PVR architecture reference to understand how it's possible (really, more likely I would have expected squares at a fixed point in the screen space than in 3D)

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Reply 1042 of 1096, by DigiMind

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I have an idea.
Broken tiles are simply unlit ones. Don't remember how is lightmapping realized in Q1/Q2 engines, but this is a "multi-texturing" issue.
Not sure how can (for example) be broken part of the chip core (ALU, tile-processor etc.), so maybe after all this is VRAM issue.

Very fun glitch 😀

Reply 1045 of 1096, by JustJulião

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Kahenraz wrote on 2023-03-03, 23:34:

Has anyone thought about pairing a PCX2 with a PowerVR Kyro? It just seems like an interesting and logical pairing

yes
I made tests in games too but not documented it. I remember it to be quite good and having good compatibility.

Reply 1046 of 1096, by JustJulião

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New toys for my PowerVR card

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I've only found videos of PS1 versions of Enigma and 3D Shooting Maker, none of PowerVR ones, so I'll make some gameplay videos sooner or later.
Unfortunately, 3D shooting Maker's menus rely on system fonts, meaning my american release of Windows can't display them corectly. I guess I'll have to install a japanese version of Windows.

Last edited by JustJulião on 2023-03-08, 10:10. Edited 1 time in total.

Reply 1047 of 1096, by leileilol

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It's a good idea to install a japan windows anyway as there are some games locked to the system language and refuse to run or install otherwise. I have a Japan Windows ME setup for exactly that (also.... me-tan )

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long live PCem

Reply 1049 of 1096, by JustJulião

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Kahenraz wrote on 2023-03-08, 03:43:

Is it possible to get them working by copying over a few DLLs? I think that works for Windows 3.11.

Not in a simple way, but it should work using a soft called NJstar communicator. But I can't find one of the Win9x compatible versions. It's not on the Wayback machine at least.

leileilol wrote on 2023-03-08, 02:58:

It's a good idea to install a japan windows anyway as there are some games locked to the system language and refuse to run or install otherwise. I have a Japan Windows ME setup for exactly that (also.... me-tan )

I heard it also includes english, is it true ? I would use Google lens for things I don't know by heart but it's not the best experience (I was about to make my own 3D shooter this way 😁).

Reply 1050 of 1096, by SteveC

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Hi, I've read a lot about Techland's MiniGL driver but I can't actually find anywhere to download it?

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Reply 1051 of 1096, by leileilol

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It's not really a dedicated download (an older version used to be available as a download back in 1998), but rather it's found in Techland's Crime Cities game, and the demo is the easiest way to get it.

Don't expect miracles though. It doesn't try to substitute blends like NEC's PowerVR Extreme driver, and is still missing some vital GL functions (especially regarding depth ranges, clipping and mipmaps)

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Reply 1052 of 1096, by SteveC

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leileilol wrote on 2023-04-08, 23:51:

It's not really a dedicated download (an older version used to be available as a download back in 1998), but rather it's found in Techland's Crime Cities game, and the demo is the easiest way to get it.

Don't expect miracles though. It doesn't try to substitute blends like NEC's PowerVR Extreme driver, and is still missing some vital GL functions (especially regarding depth ranges, clipping and mipmaps)

Thank you 😀

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Reply 1057 of 1096, by Kahenraz

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I don't know at that speed it bottlenecks from the CPU, but leileilol is right. A Voodoo 1 is going to be much faster in most games, and has the best compatibility. The only game I can think of where the PCX2 really outshines the competition is Mech Warrior 2. And I think that's only because of really buggy implementations for all of the other renderers. The Voodoo 1 makes an especially terrible showing here, despite its advantages.

If you already have a fast processor, you'll see much more of an effect by overclocking the PCX2 by replacing the clock chip. The performance uplift is almost linear.

Overclocking the Videologic PowerVR PCX2?

Reply 1058 of 1096, by rasz_pl

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1024x768 30 fps Tomb Raider on P233MMX is another gem https://www.youtube.com/watch?v=5GMesT4WKzI going up to 1GHHz P3 doesnt change anything as the game is locked to 30

Open Source AT&T Globalyst/NCR/FIC 486-GAC-2 proprietary Cache Module reproduction

Reply 1059 of 1096, by JustJulião

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Bought a rare version of the PowerVR PCX1

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Chadti99 wrote on 2023-04-17, 22:55:

Whats the perf gain look like between a p3 1GHz and a p4 3GHz? Surely it’s minimal?

I'd say something between 5% and 10%.
I personally dislike using it in a much newer system, but if you want to get the most out of it, it will be slightly faster that way.
Make sure to not use a S3 or SiS primary card, it's slow with a PowerVR.

Finally, I made a PCI bus speed comparison with an overclocked PCX2 (90MHz).
Quake I :
29MHz : 34.1
39MHz : 34.6
video
System is a 440BX board with a Celeron Tualatin 1300.
The primary card is an ATi Rage 128 Pro (AGP).
PCI bus speed relevance is clearly overated, even with a 90MHz card. At least on a 440BX motherboard.

As a bonus, here is Tomb Raider 5 runing on a PCX2 @90MHz . I know it was an old engine when it came out in 2000, but I found satisfying to play a 2000 game smoothly with a PCX2.
Sorry for the dark image.