Better motion blur?

[leileilol]

What's a good fixed way for motion blur that doesn't look like a lazy buffer effect?

Doom3 BFG supposedly does a nice multipass motion blur using player velocity and angle differences but the viewmodel is excluded which kind of breaks the illusion. It also implies the blur is done in cgame.


I intend to do this to id Tech 3.

[Barnes]

[leileilol]

I never got the vector-based motion blur to work

but however, I did do a different method that does work. Sort of.


Just capturing the frames alternating between 5 screen texture buffers (which takes up a crapload of VRAM, 40MB at 1920x1080) , then mixing them in a fragment shader. It's most effective at 120-240fps.



Sure, I could take a gradual buffer approach, but i'm trying to retain as much color precision as I can since we already lose some with overbrights.

[Barnes]

Damn) I'm thought about this method some days ago

[Spiney]

You could try accumulating frames into a HDR buffer. I guess that wouldn't balloon up so much.

As for retro stuff, maybe render 4 quarter res buffers with one pixel view offset and arrange the pixels in a screendoor pattern.