try this to invert normals.X (PositionToPoints to see what is going on
with viewer set to display point normals):
set cut_paste_input [stack 0]
version 8.0 v1
Read {
inputs 0
file "\[file dirname \[value root.name]]/footage/sphere2.exr"
format "640 480 0 0 640 480 1 PC_Video"
origset true
on_error "nearest frame"
name Read2
selected true
xpos 374
ypos -233
}
add_layer {normals normals.X normals.Y normals.Z}
Expression {
channel0 {normals.X -normals.Y -normals.Z}
expr0 -normals.X
channel1 none
expr1 normals.Y
channel2 none
expr2 normals.Z
name Expression1
selected true
xpos 374
ypos -149
}
add_layer {xyzWPP xyzWPP.red xyzWPP.green xyzWPP.blue}
PositionToPoints2 {
display textured
render_mode textured
P_channel xyzWPP
N_channel normals
name PositionToPoints1
selected true
xpos 521
ypos -112
}
On 02/01/14 18:00, Gary Jaeger wrote:
seems like funky stuff, but take a look if you're so inclined. link
below. I assume you mean to use an Invert node? I've tried but can't
get it right. The file below has a light and camera in the same
position as maya. simple sphere. Thanks Frank
https://dl.dropboxusercontent.com/u/4327868/relight.zip
On Jan 1, 2014, at 8:46 PM, Randy Little <[email protected]
<mailto:[email protected]>> wrote:
What happens if you reverse the normals in nuke?
On Jan 1, 2014 11:44 PM, "Gary Jaeger" <[email protected]
<mailto:[email protected]>> wrote:
I see. I think. It's from maya (which is Y up) and vray but I'll
just have to experiment
On Jan 1, 2014, at 8:34 PM, Frank Rueter <[email protected]
<mailto:[email protected]>> wrote:
Well, if you export from a "z up" system you might have to swap
the green and blue channels, and if you are importing from a
left handed coordinate system you will have to invert red I think.
>>And point positions are worldspace, right?
Depends on what the shader is doing. They might be in camera space.
On 02/01/14 17:30, Gary Jaeger wrote:
Thanks Frank. That's what I figured but I couldn't find a
combination that worked right. It would be in invert, and not a
swap, right? And point positions are worldspace, right?
On Jan 1, 2014, at 7:49 PM, Frank Rueter <[email protected]
<mailto:[email protected]>> wrote:
That does sound like you need to munge the VRay normals.
I think that is exactly what I did in the past but it's been
to long, I can't remember the details.
If up is down and left is right, it sounds like you just need
to invert your normals pass' red and green channels.
This could be caused by a z up vs y up coordinate system in
your 3D setup (i.e. 3dsMax) and a left vs right hand
coordinate system.
On 02/01/14 16:30, Gary Jaeger wrote:
I'm experimenting with Relight. It's cool, but it looks to me
like something is reversed. If I put a light that I know
should be upper right, the lower left gets illuminated. Maybe
normals reversed or something? these are passes from vray.
Anybody run into this?
Gary Jaeger // Core Studio
249 Princeton Avenue
Half Moon Bay, CA 94019
650 728 7060 <tel:650%20728%207060>
http://corestudio.com <http://corestudio.com/>
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249 Princeton Avenue
Half Moon Bay, CA 94019
650 728 7060 <tel:650%20728%207060>
http://corestudio.com <http://corestudio.com/>
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249 Princeton Avenue
Half Moon Bay, CA 94019
650 728 7060 <tel:650%20728%207060>
http://corestudio.com <http://corestudio.com/>
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249 Princeton Avenue
Half Moon Bay, CA 94019
650 728 7060 <tel:650%20728%207060>
http://corestudio.com <http://corestudio.com/>
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