Photoshop-style merges Nuke lacks: color, luminance, saturation, and hue via CIE-LCH ShuffleCopy.
Merge Alt takes A/B (plus mask) and offers operation modes color, luminance, saturation, and hue. It converts both sides to CIE-LCH, ShuffleCopys the relevant channels, and converts back.
Also exposes bbox and metadata source (A or B) and a mix. Use when you need luminance or color merges that stock Merge does not ship.
set cut_paste_input [stack 0]
version 13.2 v9
push $cut_paste_input
push 0
Group {
inputs 2
name mergeAlt
tile_color 0x421010ff
selected true
xpos -169
ypos -2
addUserKnob {20 mergeAlt}
addUserKnob {4 operation M {color luminance saturation hue ""}}
operation luminance
addUserKnob {4 bboxinput l "set bbox to" M {B A "" ""}}
addUserKnob {4 metainput l "metadata input" -STARTLINE M {B A "" "" "" "" ""}}
addUserKnob {41 which l mix T Dissolve1.which}
addUserKnob {26 ""}
addUserKnob {26 lbl l "" +STARTLINE T "Merge Alt v1.1"}
addUserKnob {22 btn l DerekVFX.ca T "nuke.tcl('start', 'https://derekvfx.ca')" +STARTLINE}
}
Input {
inputs 0
name A
xpos 93
ypos -575
number 1
}
set Ncbd6400 [stack 0]
Input {
inputs 0
name B
xpos 725
ypos -573
}
set Ncbd7200 [stack 0]
Switch {
inputs 2
which {{bboxinput}}
name Switch3
xpos 1301
ypos -461
}
push $Ncbd6400
push $Ncbd7200
Switch {
inputs 2
which {{metainput}}
name Switch2
xpos 1094
ypos -474
}
Input {
inputs 0
name mask
xpos 386
ypos -161
number 2
}
push $Ncbd7200
Colorspace {
colorspace_out CIE-LCH
name Colorspace8
xpos 725
ypos -461
}
set Ncbd6b00 [stack 0]
push $Ncbd6400
Colorspace {
colorspace_out CIE-LCH
name Colorspace9
xpos 93
ypos -464
}
set Ncbd5d00 [stack 0]
ShuffleCopy {
inputs 2
red red
blue blue
name ShuffleCopy2
xpos 93
ypos -314
}
Colorspace {
colorspace_in CIE-LCH
name Colorspace3
xpos 93
ypos -263
}
push $Ncbd6b00
push $Ncbd5d00
ShuffleCopy {
inputs 2
red red
green green
name ShuffleCopy4
xpos 287
ypos -320
}
Colorspace {
colorspace_in CIE-LCH
name Colorspace2
xpos 287
ypos -269
}
push $Ncbd6b00
push $Ncbd5d00
ShuffleCopy {
inputs 2
green green
blue blue
name ShuffleCopy1
xpos 488
ypos -308
}
Colorspace {
colorspace_in CIE-LCH
name Colorspace1
xpos 488
ypos -257
}
push $Ncbd6b00
push $Ncbd5d00
ShuffleCopy {
inputs 2
red red
name ShuffleCopy3
xpos 725
ypos -310
}
Colorspace {
colorspace_in CIE-LCH
name Colorspace10
xpos 725
ypos -253
}
Switch {
inputs 4
which {{operation}}
name Switch1
xpos 725
ypos -199
}
push $Ncbd7200
Dot {
name Dot1
xpos 906
ypos -321
}
Dissolve {
inputs 2+1
channels rgb
which 1
name Dissolve1
xpos 725
ypos -140
}
CopyMetaData {
inputs 2
name CopyMetaData1
xpos 725
ypos -13
}
CopyBBox {
inputs 2
name CopyBBox1
xpos 725
ypos 50
}
Output {
name Output1
xpos 725
ypos 113
}
end_group