 | | | Blobby particle transparency/alpha question | Blobby particle transparency/alpha question 2003-12-01 - By Wood, Matt
Back
The alpha/transparency thing seems to work fine for me with blobbies in 5.0.
Maybe there's something else in your scene or shader that's causing the
problem.
-- --Original Message-- --
From: Zach Prichard [mailto:zwp1@(protected)]
Sent: 01 December 2003 11:55
To: maya@(protected)
Subject: Blobby particle transparency/alpha question
quick version: I have blobby particles in the scene with a phong 'water'
shader applied to them with a high transparency. When rendered with the rest
of the scene the transparency works great....but say that I want to render
them seperately and comp them later. Well when I check the alpha the blobby
particles are pure white...they apparently have no alpha tranparency when by
themselves. But when something's behind it, it appears to have the correct
transparency. What's up with that?
long version: A couple of months ago I was researching creating a 'rain on a
window' effect. I succeeded in getting what I wanted after several hours of
experimenting. Today it's time to implement this into my scene.
I discover that the scale I was working out in the rain test scenes was at a
much higher scale than the actual scene i'm using.
So when I had to import the rain effect, I had to scale it down. But it just
seems that the threshold/radius is NOT relevant. Meaning trying to get a
good water at lower radius/threshold values just doesn't seem to work at
all.
So I figured I could go back to my rain test scene...render out some rain
drop stuff and composite them onto the windows seperately in A/FX. However
the transparency that is inherit in the phong shader I'm using for the
raindrops doesn't seem to work for the blobby alpha. If there's something
behind it IN the scene then you can see whatever's behind the particle
perfectly....however, by rendering the particles by themselves, I discovered
that it actually just doesn't have a real alpha.
Any solutions to this?
Thanks!
Z
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---
List-help: <mailto:listar@(protected)?Subject=help>
List-unsubscribe: <http://www.highend3d.com/maya/listserver/>
List-subscribe: <http://www.highend3d.com/maya/listserver/>
List-archive: <http://www.highend3d.com/maya/archive/>
**********************************************************************
Please visit the official Granada website at www.granadamedia.com
for the latest company news.
This email and any files transmitted are confidential and intended
solely for the use of the individual or entity to which they are
addressed. If you have received this email in error, please notify
postmaster@(protected)
Thank you.
**********************************************************************
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---
List-help: <mailto:listar@(protected)?Subject=help>
List-unsubscribe: <http://www.highend3d.com/maya/listserver/>
List-subscribe: <http://www.highend3d.com/maya/listserver/>
List-archive: <http://www.highend3d.com/maya/archive/>
|
|
|