Another New Volumetric Fog Demo :)

[pocketmoon66]

following on from this post http://www.beyond3d.com/forum/showthread.php?t=32439

OpenGL Demo. Screenshot is from 6800GT

Requires Nvidia GPU with Vertex Texture Fetch, FP16 blending, and err, stuff...

Tested with 32bit XP drivers 84.32. Known VTF bug prevents it working on newer drivers.

Uses Shadow Volume Reconstruction (entirely on the the GPU using Vertex Texture Fetch). Shadow Volume Mesh is used to render shadow but mainly used to calculates in-scatter. Uses a nasty but OK looking approximation, similar in prinicple to CryEngine2 Volumetric Lightning Video on ATi Dev site http://www.ati.com/developer/techpapers.html.

Demo here:

http://www.baddoggames.com/svr2.zip

I'd be happy if you could post hardware and fps (but you'll need fraps!)


[edit glut32.dll now included]

 

[ector]

If you want to attract feedback, better make it easy for people to run it

No glut32.dll included = no try, I'm too lazy.

Also you might want to think about adding that framerate counter in the titlebar or something, installing fraps just to give you a framerate is kind of overkill...

 

[pocketmoon66]

If you want to attract feedback, better make it easy for people to run it

No glut32.dll included = no try, I'm too lazy.

bugger - I thought I had this time Update soon...

 

[Malo]

Hey wait a second.... your not Humus? I'm confused!

 

[pocketmoon66]

Hey wait a second.... your not Humus? I'm confused!

I am the the Anti-humus!

But only in the sense that my work is generally buggy, a bit shoddy, and only works on Nvidia hardware

 

[Kanyamagufa]

I am the the Anti-humus!

But only in the sense that my work is generally buggy, a bit shoddy, and only works on Nvidia hardware

Damn, you weren't kidding...:smile:

(meant in a fun way) =)

 

[Albuquerque]

LOL @ the responses and "anti-humus"

I'm willing to give this a whack on my little laptop's 7300 Turbocache mobility chipset on my Dell lappy. I'll report back later to see how it's going...

 

[Humus]

I am the the Anti-humus!

 

[pocketmoon66]

I suppose I should be pocketmoon666

 

[FrameBuffer]

Hey wait a second.... your not Humus? I'm confused!

Exactly what I was thinking .. anyhow nice to see another coder, now only if ATI was to spec and had VTF /wink ;p

 

[pocketmoon66]

G80 - 1600x1200 264 fps

http://www.hardforum.com/showpost.php?p=1030167028&postcount=265

Almost an order of magnitude quicker at Vertex Texture Fetch (over 6800GT)

 

[trinibwoy]

How do you set the resolution on this thing? If I just open it up I get 65fps - 7900GTX-512 mobile.

 

[Aluadan]

E6400@2700
9700gto@690/780

86fps.

 

[ChrisRay]

This is a pretty cool demo.

 

[Aluadan]

Oops, 86fps with 4xAA/16xAF
92fps without.

 

[Rufus]

E6400@2700
9700gto@690/780

86fps.

I assume you mean 7900GTO. I don't think the 9700 had a gto variant

 

[pocketmoon66]

How do you set the resolution on this thing? If I just open it up I get 65fps - 7900GTX-512 mobile.

You can't (yet). Thanks for the fps though.

The bottleneck in this demo (and it's a HUGE bottleneck for me) is vertex texture fetch from a non-displayed buffer, which is set at 256x256. The actual display res has close to zero impact on my 6800GT.

 

[ChrisRay]

anti aliasing does seem to effect it to some degree.