Motion blur or streaking or something else? \ VOGONS

Motion blur or streaking or something else?

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First post, by doaks80

Posted on 2018-12-30, 10:46

doaks80 Offline

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I have been playing HL Blue Shift on a Voodoo5 (factory settings) and 19" LCD and have noticed something strange.

Basically the overall environment is very grey, but with certain red color aspects, such as the railing next to walk ways.

What I notice is that anything red leaves very noticeable streaks as I move it in my field of vision, e.g. if I turn my head left (in the game that is), the object appears to move right, leaving a red trail behind it to the left.

No other color object in the game does this, only red.

Is it the LCD...the saturated red pixels not switching to grey fast enough (grey is always the background color)? Or the V5? I have tried everything from vertical sync to triple buffering to AA but nothing changes.

It does not make the game unplayable but is somewhat annoying.

The LCD claims to be running at 75hz...the frame rate was definitely less than that when I bumped up AA to 4x...so if the monitor can redraw the screen faster than the card updating the buffer...

Or is it just my eyes perceiving motion blur and the red saturates my visual perception system?

k6-3+ 400 / s3 virge DX+voodoo1 / awe32(32mb)
via c3 866 / s3 savage4+voodoo2 sli / audigy1+awe64(8mb)
athlon xp 3200+ / voodoo5 5500 / diamond mx300
pentium4 3400 / geforce fx5950U / audigy2 ZS
core2duo E8500 / radeon HD5850 / x-fi titanium

Reply 1 of 6, by Baoran

Posted on 2018-12-30, 11:17

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Model of the lcd? What resolution?

Reply 2 of 6, by leileilol

Posted on 2018-12-30, 13:19

leileilol Offline

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You sure it's not the screen filter feature that comes standard with all 3dfx hardware?
Here's an extreme example

long live PCem

Reply 3 of 6, by doaks80

Posted on 2018-12-30, 19:34

doaks80 Offline

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leileilol wrote:
You sure it's not the screen filter feature that comes standard with all 3dfx hardware?
Here's an extreme example

Don't think so. Here is a video...I'll leave up for 24hr. The best way is to focus on one of the red bars, and as it moves across the screen, e.g. from left to right, notice the red streak left behind to the left. It doesn't last very long and sort of jumps around, but you can still see it clearly.

https://drive.google.com/file/d/15Z6e4MM8nJtK … j3UW9cj0As/view

Reply 4 of 6, by doaks80

Posted on 2018-12-30, 19:36

doaks80 Offline

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Baoran wrote:
Model of the lcd? What resolution?

Acer AL1913. Native 1280x1024. HL set to 1280x960 (highest mode), default OpenGL driver. It happens in all other resolutions as well down to 640x480.

Reply 5 of 6, by realnc

Posted on 2018-12-30, 22:18

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doaks80 wrote:
Don't think so. Here is a video...I'll leave up for 24hr. The best way is to focus on one of the red bars, and as it moves across the screen, e.g. from left to right, notice the red streak left behind to the left. It doesn't last very long and sort of jumps around, but you can still see it clearly.

https://drive.google.com/file/d/15Z6e4MM8nJtK … j3UW9cj0As/view

That looks like lack of overdrive to me on the LCD in combination with really slow pixel response times.

Take a screenshot of the game in this area, then open the screenshot in an image viewer and move the viewer application around on the desktop. You should see the same amount of blur on those red pixels.

Reply 6 of 6, by doaks80

Posted on 2018-12-31, 00:02

doaks80 Offline

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OK so I tried with a third 19" monitor, this time a BENQ...and it has gone away completely! Which is nice.

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