motion blurr effects

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Started by jverkoey March 04, 2003 05:46 PM

5 comments, last by jverkoey 21 years, 1 month ago

122

Author

March 04, 2003 05:46 PM

anyone have any working code that creates the motion blur effect? I have tried making it, but whenever I do it, the entire program slows to a crawl........ so, some working code would be nice, thank you

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Maximus

124

March 05, 2003 12:56 AM

You can fake it by doing "ghosting".. after rendering each frame, copy it to a texture, and after drawing the next frame, blend the previous frame over the top of it, but not too much.

Rendering to a texture can be used for many useful effects, including predator-like invisibility

-----------------------
"When I have a problem on an Nvidia, I assume that it is my fault. With anyone else''s drivers, I assume it is their fault" - John Carmack

-----------------------"When I have a problem on an Nvidia, I assume that it is my fault. With anyone else's drivers, I assume it is their fault" - John Carmack

Crispy

556

March 05, 2003 04:45 AM

Then again - rendering the frame to a texture once slowed my program down by ~50%. I''d be careful with it if you only have a small number of polys that you want to blur (eg a box).

Just something to keep in mind.

Crispy

"Literally, it means that Bob is everything you can think of, but not dead; i.e., Bob is a purple-spotted, yellow-striped bumblebee/dragon/pterodactyl hybrid with a voracious addiction to Twix candy bars, but not dead."- kSquared

K-1

122

March 06, 2003 08:21 AM

There''s always the accumulation buffer too, assuming you know how to manipulate it.

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Turnip Monster

122

March 07, 2003 07:39 AM

www.gametutorials.com has a tutorial on the method maximus suggested.

James Trotter

432

March 07, 2003 08:56 AM

quote:Original post by K-1
There''s always the accumulation buffer too, assuming you know how to manipulate it.

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K-1 Productions: Come visit us here.

But the accumulation buffer is very, very slow, and not that often hardware supported, so you might want to avoid it.

Maximus

124

March 08, 2003 01:55 AM

Doing what I suggested works fine no matter what the background colour is. I do it in the Quake2 engine, and it works fine.

Screenshot here

-----------------------
"When I have a problem on an Nvidia, I assume that it is my fault. With anyone else''s drivers, I assume it is their fault" - John Carmack

-----------------------"When I have a problem on an Nvidia, I assume that it is my fault. With anyone else's drivers, I assume it is their fault" - John Carmack

motion blurr effects

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motion blurr effects

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