 | | | Fog Question | Fog Question 2005-05-17 - By Joey Lawrence
Back
Thank You Dave!
On 5/17/05, David Shirk <dshirk@(protected)> wrote:
> Hi Joey-
>
> There's a bunch of ways to get a fog-type pass effect. My current fave is to
use a color override on objects. Example workflow:
>
> 1-Create a new Pass
> 2-Place all your visible objects into a partition.
> 3-Apply a Math>Linear_Falloff shader node to the partition. Adjust the start
and end falloff values to your taste. You can also use the
> Exponent_Falloff if you want a more curving falloff.
>
> 4-(advanced option - also a little bit slower to render) Plug the Falloff
node into a Gradient_Mixer node's Input connection and set the input type
> to scalar. Connect the Gradient mixer to the partition material "surface"
input. You can now interactively control the exact coloring/falloff/etc of
> your 'fog'
>
> This technique renders very fast, since there's no volume or shading
calculation to speak of. It gets a little bit more complex to set up if you're
> dealing with objects that have transparency, but is still usable in that
situation.
>
> Good luck
>
> -Dave
>
>
> Joey Lawrence wrote:
> > Ok well I figured it out, I was doing a preview of all layers and not
> > seeing a result, but when I actually rendered out a frame it rendered
> > out the proper result. After seeing the result though, this will still
> > not work b/c of lighting. I am using a Z-Depth Lens Shader for my
> > camera and it is working ok, but I am still thinking that there is
> > something better? I should also clarify that I am not exactly looking
> > to make a fog effect, but a distance effect, IE: the further away
> > something gets it starts to fade/get hazy. Is Z-Depth the way to do
> > this? Thanks a lot!
> >
> > -Joey-
> >
> > On 5/15/05, Adam Sale <adamsale@(protected)> wrote:
> >
> >>for the render engine option have you tried setting the engine to render
> >>using open GL?
> >>-- -- Original Message -- --
> >>From: "Joey Lawrence" <xsiforum@(protected)>
> >>To: <XSI@(protected)>
> >>Sent: Sunday, May 15, 2005 10:29 AM
> >>Subject: Fog Question
> >>
> >>
> >>>Here is another rather simple question, but something that I need to
> >>>know. I am looking to put some fog into my scene and have a found that
> >>>I can add a Z-Deph Shader to my camera and get a black to white fog
> >>>result. I have also noticed that in the camera display properties
> >>>there is a depth-cue/fog option where you can also control your fog
> >>>and it is a lot more intuitive. I was reading that there is a way to
> >>>render the depth-cue/fog effect if you go into your Render Options and
> >>>then go to Render Engine and change your Render Engine to Current
> >>>camera display settings... this is what it says that it does...
> >>>
> >>> "outputs to file the OpenGL rendered scene. Scene elements are
> >>>rendered according to the current camera display settings as defined
> >>>in the Camera Display property editor.
> >>>This is useful for rendering particular camera display effects like
> >>>depth-cue fog."
> >>>
> >>>So I have tried every option that I know to try and still no luck on
> >>>getting the Depth-Cue to render out. I guess that my real question is
> >>>what is the BEST way to add fog to a scene. Thanks in advance!
> >>>
> >>>-Joey-
> >>>
> >>>---
>
> --
> | David Shirk | technical animator | industrial light + magic |
>
>
> ---
> Unsubscribe? Mail Majordomo@(protected) with the following text in body:
> unsubscribe xsi
>
---
Unsubscribe? Mail Majordomo@(protected) with the following text in body:
unsubscribe xsi
|
|
|