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TIGSource ForumsDeveloperTechnical (Moderator: ThemsAllTook)[Pretty much answered] Perceived motion blur because of speed?
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Pampattitude
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« on: August 26, 2015, 01:35:21 AM »

Hey y'all!

I recently posted about my Ludum Dare 33 entry, Steal Alive (sorry, I don't mean to shamelessly plug my game here :/).
But I have a problem I can't figure out: the game feels blurry.

There's no actual blur in the rendering (screenshots were made while playing, without stopping the game; you can try it yourself, no blur :/) or in the code, but visually it looks blurry. I think it has to do with the sprites preciseness and the speed of the entities, but I can't find documentation on how to fix this problem.

So my question is, what could cause this and how could I fix it? It really makes the game feel dizzy or at least a bit uncomfortable.
Thanks a bunch!
« Last Edit: August 28, 2015, 01:38:03 AM by Pampattitude » Logged
nickgravelyn
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« Reply #1 on: August 26, 2015, 07:20:30 AM »

Pixels on displays take time to transition between colors. Depending on your display that can cause blurriness or motion blur as you describe.

For what it's worth, I tried the game and it didn't seem blurry to me at all.
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Pampattitude
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« Reply #2 on: August 26, 2015, 07:45:32 AM »

Damn, you're the first person who didn't experience that (or, at least, that told me). What kind of monitor do you use, if it's not too intrusive?
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BorisTheBrave
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« Reply #3 on: August 26, 2015, 10:56:21 AM »

Well, based on your screenshot, you've got the same image in foreground and background and you've scaled it up for the foreground. This makes it a little blurry. You ideally want to display raster images unscaled and unrotated so that each pixel in the image becomes exactly one pixel on the screen - when you move away from that, it's better to shrink images than expand them.

Your case is particularly bad as you seem to have a mix - some images are quite sharp, which makes the rest stand out.
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Pampattitude
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« Reply #4 on: August 27, 2015, 12:37:12 AM »

@BorisTheBrave, I did not mean it in terms of general blur. I mean, even on a low resolution where the sprites are downscaled, the motion blur effect is still present.

I know scaling is a problem though, 72 hours wasn't enough to work on that Tongue
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Zorg
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« Reply #5 on: August 27, 2015, 12:58:21 AM »

I don't see any motion blur. Everything looks crisp. What does the blur you see look like? I made a photoshop mockup. Does it look like this (afterimages)?

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Pampattitude
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« Reply #6 on: August 27, 2015, 01:45:30 AM »

I have no idea how to show you, but it looks smudged. You can't perceive details (such as armor borders on soldiers, or colored outlines on entities). It doesn't look like afterimages to me or my fiancee.

Nice mockup BTW!
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