3dfx Archive - GLquake image quality

Maf Full Member Offline I Love YaBB 2! Posts: 106	Re: GLquake image quality Reply #15 - 25.03.10 at 20:06:44 goriath wrote on 25.03.10 at 19:48:01: Why? When you take the screenshot, horizontal lines are captured too? At that time, I didn't yet know how to take a screenshot in GLquake Ok, I took one more look and I can't see any lines within the game with Voodoo 4
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goriath God Member Offline Ruggedized Retro Gamer Posts: 599 Italy/Slovenija Gender:	Re: GLquake image quality Reply #16 - 25.03.10 at 21:07:17 I asked you because that horizontal lines with your Voodoo Graphics remember mine while playing Unreal with Voodoo2 SLI some years ago...and I was not able to capture the lines in the screenshot in order to explain the issue I encountered
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Maf

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Re: GLquake image quality
Reply #17 - 15.02.11 at 12:31:14

Hi again, I decided to investigate the issue one more time, this time with V5. I can see this horizontal artifacts/lines both in Quake in Unreal, the resolution doesn't play any role (the higher the resolution, the thinner the lines). But I found two interesting solutions:

1. Force 32bit rendering in 3dfx Hub
or
2. Set FSAA to 4x

This is weird, isn't it? Where is this legendary image quality? Wink

Forcing 32bit rendering unfortunatelly lowers the fps from 70 to 45 in Unreal (1280x1024).
Is there any better way to solve this issue? And what actually causes it?

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batracio Junior Member Offline An evil petting zoo? Posts: 69 Spain Gender:	Re: GLquake image quality Reply #18 - 17.02.11 at 08:46:46 Maf wrote on 15.02.11 at 12:31:14: Is there any better way to solve this issue? And what actually causes it? Select High under 3D Filter Quality in 3dfx tools to force a 2x2 filter. Default option uses the old V1 & V2 4x1 horizontal filter.
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Maf

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Re: GLquake image quality
Reply #19 - 17.02.11 at 09:35:47

batracio wrote on 17.02.11 at 08:46:46:

Maf wrote on 15.02.11 at 12:31:14:

Is there any better way to solve this issue? And what actually causes it?

Select High under 3D Filter Quality in 3dfx tools to force a 2x2 filter. Default option uses the old V1 & V2 4x1 horizontal filter.

I tested this one already and I'm almost sure it didn't help, but I'll give it one more try.

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Maf Full Member Offline I Love YaBB 2! Posts: 106	Re: GLquake image quality Reply #20 - 27.03.11 at 15:02:23 batracio wrote on 17.02.11 at 08:46:46: Select High under 3D Filter Quality in 3dfx tools to force a 2x2 filter. Default option uses the old V1 & V2 4x1 horizontal filter. By the way, does this mean, that these line artifacts are unavoidable with Voodoo 1? And, enlighten me guys, do only I notice them?
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batracio

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Re: GLquake image quality
Reply #21 - 30.03.11 at 18:27:37

Did you get rid of the horizontal artifacts with V5 or not? By the way, setting 3D filter quality to High may not be enough. Setting alpha blending to Sharper will ensure 2x2 filtering.

And no, there's no way that I know of to avoid the horizontal artifacts with V1/2. Anyway the 4x1 filter eliminates most of the 16-bit dithering artifacts found in non-3dfx hardware.

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Maf Full Member Offline I Love YaBB 2! Posts: 106	Re: GLquake image quality Reply #22 - 08.05.11 at 01:17:05 Ok, I know this topic is already boring, but I'm back playing with Voodoo 5 5500 and as said earlier, when I set 3d Filter to High and Alpha-Blending to Sharper, the fuzzy horizontal lines are still there - this means the 22-bit rednering is not getting enabled? I'm confused.
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Maf

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Re: GLquake image quality
Reply #23 - 11.05.11 at 22:31:07

I did some further test with Q3A and UT and here are my observations:
- the "no horizontal lines" aka. 22-bit rendering actually works when enable High filter / Sharper blanding, BUT ONLY when I switch the OpenGL/Glide to Single-Chip only - so are my problems SLI-related?
- another observation: the "horizontal lines" are present when rendering with 640x480, 800x600 or 1024x768 resolution, but not with 512x384. Is there any reason?

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FalconFly YaBB Administrator Offline 3dfx Archivist Posts: 2445 5335N 00745E Gender:	Re: GLquake image quality Reply #24 - 12.05.11 at 21:54:50 Just a thought (could be wrong) : did you enable Vsync ? Not sure but it might help (at least worth a shot).
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Maf Full Member Offline I Love YaBB 2! Posts: 106	Re: GLquake image quality Reply #25 - 13.05.11 at 00:24:08 FalconFly wrote on 12.05.11 at 21:54:50: Just a thought (could be wrong) : did you enable Vsync ? Not sure but it might help (at least worth a shot). I tried, didn't help
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Quaker763 Junior Member Offline It really is kind of ridiculous Posts: 67 Australia Gender:	Re: GLquake image quality Reply #26 - 10.08.11 at 23:40:19 hmmm strange. I just played GlQuake with a voodoo 2 and got those lines.
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Maf Full Member Offline I Love YaBB 2! Posts: 106	Re: GLquake image quality Reply #27 - 20.08.11 at 14:19:26 Quaker763 wrote on 10.08.11 at 23:40:19: hmmm strange. I just played GlQuake with a voodoo 2 and got those lines. So I'm not the only one? Maybe you always had but never noticed them?
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