Node reference

Math nodes

Add

Adds a value to each channel (per channel for R, G, B, A).

Inputs: input, mask (optional).

Setting	Default	Range or choices	What it does
channels	all	rgb, rgba, alpha, all	rgb, rgba, alpha, all, or a layer (depth) or channel by name, as Nuke's.
value	0	-1 to 1	Added per channel: r, g, b, a to R, G, B, A (and to a layer's channels in order).
invert mask	off		Use 1 - the mask's alpha.
(un)premult by	none	none, A	Divide the colour by this channel (A: the alpha) before the change and multiply it back after, as Nuke's; none: off.
invert (un)premult	off		Use 1 - that channel.
mix	1	0 to 1	How much of the result shows over the input: 0 is the input, 1 the full effect.

Keeps values between a minimum and a maximum.

Inputs: input, mask (optional).

Setting	Default	Range or choices	What it does
channels	all	rgb, rgba, alpha, all	rgb, rgba, alpha, all, or a layer (depth) or channel by name, as Nuke's.
minimum	0	-1 to 1	Values below this are raised to it, per channel.
minimum on	on		Off: values below the minimum are left alone.
maximum	1	0 to 4	Values above this are lowered to it, per channel (never below the minimum).
maximum on	on		Off: values above the maximum are left alone.
min clamp to	0	-1 to 1	What values below the minimum become, while min clamp to on is set.
min clamp to on	off		Values below the minimum become min clamp to instead of the minimum.
max clamp to	1	0 to 4	What values above the maximum become, while max clamp to on is set.
max clamp to on	off		Values above the maximum become max clamp to instead of the maximum.
invert mask	off		Use 1 - the mask's alpha.
(un)premult by	none	none, A	Divide the colour by this channel (A: the alpha) before the change and multiply it back after, as Nuke's; none: off.
invert (un)premult	off		Use 1 - that channel.
mix	1	0 to 1	How much of the result shows over the input: 0 is the input, 1 the full effect.

Raises positive values to 1/gamma; negative values are left alone.

Inputs: input, mask (optional).

Setting	Default	Range or choices	What it does
channels	all	rgb, rgba, alpha, all	rgb, rgba, alpha, all, or a layer (depth) or channel by name, as Nuke's.
gamma	1	0.2 to 5	Positive values are raised to 1 / gamma, per channel (above 1 brightens values under 1); negative values are left alone.
invert mask	off		Use 1 - the mask's alpha.
(un)premult by	none	none, A	Divide the colour by this channel (A: the alpha) before the change and multiply it back after, as Nuke's; none: off.
invert (un)premult	off		Use 1 - that channel.
mix	1	0 to 1	How much of the result shows over the input: 0 is the input, 1 the full effect.

1 - value.

Inputs: input, mask (optional).

Setting	Default	Range or choices	What it does
channels	all	rgb, rgba, alpha, all	rgb, rgba, alpha, all, or a layer (depth) or channel by name, as Nuke's.
invert mask	off		Use 1 - the mask's alpha.
(un)premult by	none	none, A	Divide the colour by this channel (A: the alpha) before the change and multiply it back after, as Nuke's; none: off.
invert (un)premult	off		Use 1 - that channel.
mix	1	0 to 1	How much of the result shows over the input: 0 is the input, 1 the full effect.

Multiplies each channel by a value (per channel for R, G, B, A).

Inputs: input, mask (optional).

Setting	Default	Range or choices	What it does
channels	all	rgb, rgba, alpha, all	rgb, rgba, alpha, all, or a layer (depth) or channel by name, as Nuke's.
value	1	0 to 4	Multiplies per channel: R, G, B, A by r, g, b, a (and a layer's channels in order).
invert mask	off		Use 1 - the mask's alpha.
(un)premult by	none	none, A	Divide the colour by this channel (A: the alpha) before the change and multiply it back after, as Nuke's; none: off.
invert (un)premult	off		Use 1 - that channel.
mix	1	0 to 1	How much of the result shows over the input: 0 is the input, 1 the full effect.