Question Fixed fog, regardless of camera angle.

Hi there,

I would like to ask if I am on the right path here. I have been learning shaders and I have a pretty effective fog shader to use in a render feature using shader graph. I can control the fog start and finish inputs, which is great.

The problem I am having is that when the camera changes angle, so does the fog and breaks my usage needs. From googling, what I need, I believe, is distance Fog, which does sound logical. Unfortunately, I am a bit stuck on how to set this up in shader graph.

Currently, I am using the depth texture to lerp between colour and scene colour. I think this is the reason why my fog is stuck to the camera plain. Is it possible to adjust the angle when using the depth texture, or is it completely fixed to the camera view as that is what it is seeing?

I’m just after a nudge in the right direction as this has stumped me.

 

what you want is distance based fog, it will then form a sphere around the camera as opposed to being the distance of clipping planes

 

Hi, thanks for replying. Would this stand up to scrutiny where say a room is 10m?

Do you know if it's possible to fix the start and endpoint to an xyz coordinates. So no matter where you went in the foom, the back wall would be fogged. I thought maybe custom box volumes?

 

if you want that level of static you're either going volumetric or maybe abusing a particle system

 

Both suggestions of Pookshank are valid, depending on how your level is setup you might profit from Height fog as well (which is very similar to depth fog but based on world space coordinates). But none of the depth / height / coordinate only / coloring geometry that is already there based effect will be as flexible and convincing as volumes or particles

 

Again, thanks for the advice.