 | | | Bump and no bump on same surface in one pass? | Bump and no bump on same surface in one pass? 2005-06-21 - By kim aldis
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there's not much point in plugging rgb into a bump vector input. You'll need
to use the bump generator to convert it sensibly into a vector.
__ __
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Morten Bartholdy
Sent: 21 June 2005 00:25
To: XSI@(protected)
Subject: Re: Bump and no bump on same surface in one pass?
I was using a mixer node too - I just think of color 1 as a layer on top of
the base color. Actually, I can't reproduce that one. However if I plug an
image or procedural texture directly into the bump channel of a Phong
shader, the normals look like they take a hike - the specular is wrong. It
will only render a proper specular when I plug the texture node into
ambient/diffuse channels, which is sort of limiting.
I hope they don't forget revamping bumpmaps for V5.0.
- Morten
-- -- Original Message -- --
From: kim aldis <mailto:kim@(protected)>
To: XSI@(protected)
Sent: Monday, June 20, 2005 6:35 PM
Subject: RE: Bump and no bump on same surface in one pass?
When I tried it I wasn't using layers, I just used the mix node.
. I put one Phong into each of the mix2nodes inputs. What was interesting
was that the reflection remained flat where the illumination of the surface
was bumped. So I took out the mixer and just plugged a Phong into the
surface with a bump image in the Phong's bump. Again, the reflection didn't
bump but the illumination did. As far as I can tell right now, if you bump a
phong then it's reflection won't bump. Surely this can't be right?
__ __
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Morten Bartholdy
Sent: 20 June 2005 17:19
To: XSI@(protected)
Subject: Re: Bump and no bump on same surface in one pass?
Edit:
Kim you were right - only the order of layering is important! I started with
the sublayer with bump as base color and added a reflective coating as color
1 - that makes the reflective coating bumpy too. If I swap the two and add
the bumpy Phong to a reflective surface, the reflection is unaltered by the
bump, which is what I want. A bit backwards though, but it works :)
- Morten
-- -- Original Message -- --
From: kim aldis <mailto:kim@(protected)>
To: XSI@(protected)
Sent: Monday, June 20, 2005 4:37 PM
Subject: RE: Bump and no bump on same surface in one pass?
2 phongs into a mix2colours node -> surface?
__ __
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Chris Marshall
Sent: 20 June 2005 15:41
To: XSI@(protected)
Subject: Re: Bump and no bump on same surface in one pass?
There's a shader called XSI-clear-coat on XSI base. Sounds like it might do
the job for you.
Morten Bartholdy wrote:
Hi List,
I am shading an object which has a bumpy glossy reflective surface and a
smooth layer of transparent laquer covering it, effectively rendering the
surface smooth and reflective.
I can't seem to create this combination in one pass on the same surface, so
I wonder if anyone can offer a trick or workaround to make it work?
TIA!
Best regards
Morten Bartholdy
3D & VFX Artist
cell +45 2169 54676
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<DIV dir=ltr align=left><SPAN class=881005606-21062005><FONT face=Arial
color=#0000ff size=2>there's not much point in plugging rgb into a bump vector
input. You'll need to use the bump generator to convert it sensibly into a
vector.</FONT></SPAN></DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid;
MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)] <B>On Behalf Of </B>Morten
Bartholdy<BR><B>Sent:</B> 21 June 2005 00:25<BR><B>To:</B>
XSI@(protected)<BR><B>Subject:</B> Re: Bump and no bump on same surface in
one pass?<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>I was using a mixer node too - I just think of
color 1 as a layer on top of the base color. Actually, I can't reproduce that
one. However if I plug an image or procedural texture directly into the bump
channel of a Phong shader, the normals look like they take a hike - the
specular is wrong. It will only render a proper specular when I plug the
texture node into ambient/diffuse channels, which is sort of
limiting.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I hope they don't forget revamping bumpmaps for
V5.0.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>- Morten</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
#000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:<
/B>
<A title=kim@(protected) href="mailto:kim@(protected)">kim aldis</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=XSI@(protected)
href="mailto:XSI@(protected)">XSI@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 20, 2005 6:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Bump and no bump on same
surface in one pass?</DIV>
<DIV><BR></DIV>
<DIV dir=ltr align=left><SPAN class=936483116-20062005><FONT face=Arial
color=#0000ff size=2>When I tried it I wasn't using layers, I just used the
mix node.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=936483116-20062005><FONT face=Arial
color=#0000ff size=2>. I put one Phong into each of the mix2nodes inputs.
What was interesting was that the reflection remained flat where the
illumination of the surface was bumped. So I took out the mixer and just
plugged a Phong into the surface with a bump image in the Phong's bump.
Again, the reflection didn't bump but the illumination did. As far as I can
tell right now, if you bump a phong then it's reflection won't bump. Surely
this can't be right?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=936483116-20062005><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN
class=936483116-20062005></SPAN> </DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid;
MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)] <B>On Behalf Of </B>Morten
Bartholdy<BR><B>Sent:</B> 20 June 2005 17:19<BR><B>To:</B>
XSI@(protected)<BR><B>Subject:</B> Re: Bump and no bump on same surface
in one pass?<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>Edit:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Kim you were right - only the order of
layering is important! I started with the sublayer with bump as base
color
and added a reflective coating as color 1 - that makes the reflective
coating bumpy too. If I swap the two and add the bumpy Phong to a
reflective surface, the reflection is unaltered by the bump, which is
what
I want. A bit backwards though, but it works :)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>- Morten</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER
-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B
>From:</B>
<A title=kim@(protected) href="mailto:kim@(protected)">kim aldis</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=XSI@(protected)
href="mailto:XSI@(protected)">XSI@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 20, 2005 4:37
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Bump and no bump on
same surface in one pass?</DIV>
<DIV><BR></DIV>
<DIV dir=ltr align=left><SPAN class=109523614-20062005><FONT face=Arial
color=#0000ff size=2>2 phongs into a mix2colours node ->
surface?</FONT></SPAN></DIV><BR>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px
solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> <A
href="mailto:owner-xsi@(protected)">owner-xsi@(protected)</A>
[mailto:owner-xsi@(protected)] <B>On Behalf Of </B>Chris
Marshall<BR><B>Sent:</B> 20 June 2005 15:41<BR><B>To:</B> <A
href="mailto:XSI@(protected)">XSI@(protected)</A><BR><B>Subject:<
/B>
Re: Bump and no bump on same surface in one pass?<BR></FONT><BR></DIV>
<DIV></DIV>There's a shader called XSI-clear-coat on XSI base. Sounds
like it might do the job for you.<BR><BR><BR>Morten Bartholdy wrote:
<BLOCKQUOTE cite=mid000d01c575a1$f024dfa0$2d01a8c0@(protected) type="cite">
<META content="MSHTML 6.00.2800.1498" name=GENERATOR>
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<DIV><FONT face=Arial size=2>Hi List,</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I am shading an object which has a
bumpy glossy reflective surface and a smooth layer of transparent
laquer covering it, effectively rendering the surface smooth and
reflective.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I can't seem to create this
combination
in one pass on the same surface, so I wonder if anyone
can
offer a trick or workaround to make it work?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>TIA!</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Best regards</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Morten Bartholdy<BR>3D & VFX
Artist<BR>cell +45 2169 54676<BR></FONT></DIV></BLOCKQUOTE><BR>---
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