Fog?

[arfur9]

I've noticed in the cmap files there is fog options, do these actually work?

[Carsten]

No,

[arfur9]

ok ta
I'll probably get away with lights, I have a short exterior scene which needs dark areas were the player can't go

[Carsten]

Faking it might be an option, using appropriately made translucent textures that are put on Bezier Patches or brushes with otherwise invisible sides.

[arfur9]

I was going to try that with light rays through a window, like this:
https://www.youtube.com/watch?v=Zafmx3GjNhM

I've used this in rendered images, but usually in the distance

[arfur9]

So far I have:

I can't get a white glow and maintain the transparency

here's the simple texture

[Carsten]

What does the material definition / material script look like?

[arfur9]

my wild guess was something long the lines:

Code: Select all

"rays"
{
    diffusemap /Textures/rays/rays.png
 //lumamap  /Textures/rays/rays_inv.png

ambientMask d  
alphaTest .8 
 LightShader   none1234 
  noDynLight 
  noShadows
  blendFunc   zero  one_minus_src_color
  meta_editorSave
}

I came up with that looking at decals, I'm guessing its " blendFunc zero one_minus_src_color" which is probably not right?

[Carsten]

I came up with that looking at decals, I'm guessing its " blendFunc zero one_minus_src_color" which is probably not right?

Yes, I think so.

blendFunc zero one_minus_src_color can work well – if you have the proper texture for it, which must be specially colored (see some of the related decals for examples).

blendFunc src_alpha one_minus_src_alpha is what is normally used for translucent surfaces, see e.g. Games/DeathMatch/Materials/liquids.cmat for examples. I think that this is the one that I'd use or at least consider as the most promising candidate.

blendFunc one one might work with (very dark-grey) fog textures as well. The fog might be glowing a bit.

[arfur9]

Thank you the last one did it (blendFunc one one )

I might need to stop the back faces showing but its getting there
This is my "test stuff" level lol

[Carsten]

Good to hear and great to see that!