Nuke Viewer Transparency

[Dezperados]

Hi.

Since I come from an After Effetcs background, I was so used to see a checkerboard if an element has an alpha channel. I know, i could always do a merge with a Checkerboard, but that gets complicated the more complex the comp gets.

Is there a way to tell the Nuke Viewer to show transparency not black, but like a checkerboard?

Thx a lot!

[Gravy]

Press A to look at the alpha channel? Not sure if that is what you want. If you mouse over the viewer too the pixel values show up in the lower left. (you might have to hit ctrl to sample them, can't remember right now)

[pingking]

you can also have a "matte overlay" in the viewer. (shortcut for this is "m" in the viewer)

[Dezperados]

Hey thx guys, yes I know the shortcuts and tips you gave me. I thought there was this kind of checkerboard thing for transparent pixels. Like this image, without a merge to the checkerboard.

[Gravy]

O, I get you now. You mean the viewer background type thing. Pretty sure you can just have black in Nuke.

[tinitron]

Hm, I think it may be possible to do the merge with the checkerboard in a viewer_process gizmo or group. So you can allways turn it on and off.

[tinitron]

Hallo Claus,
this is doing what you would like to have. Just put this group in your script and you can turn on the checkerboard in the viewerbackground by activating the IP button in the viewer.

set cut_paste_input [stack 0]
version 6.0 v1
push $cut_paste_input
Group {
 name VIEWER_INPUT
 selected true
 xpos 227
 ypos -9
}
 CheckerBoard2 {
  inputs 0
  format "1024 1024 0 0 1024 1024 1 square_1K"
  name CheckerBoard1
  xpos 131
  ypos -201
 }
 Reformat {
  type "to box"
  box_width {{Input1.width}}
  box_height {{Input1.height}}
  box_fixed true
  filter Impulse
  name Reformat1
  xpos 131
  ypos -129
 }
 Input {
  inputs 0
  name Input1
  xpos 9
  ypos -129
 }
 Merge2 {
  inputs 2
  operation under
  name Merge1
  xpos 131
  ypos -9
 }
 Output {
  name Output1
  xpos 131
  ypos 39
 }
end_group

Greetings to Steffen, Alex and all the others at unexpected!!

[Dezperados]

Thx a lot Michael

Und viele Grüße an auch Dich aus Stuggi!

[ringas]

Thanks, works like a charm!!!

[Richeal]

Open menu.py,add the following code:

nuke.ViewerProcess.register("Transparent", nuke.createNode, ("Transparent_v2",))

http://www.aboutnuke.org/viewthread....extra=#pid8854