Adjustment Layers are useful non-destructive layers that allow you to make corrections and enhancements to layers and masks. They have an extra settings section in Material Properties when used as regular layers.

Blur #

This adjustment adds a high-quality blur to the layers or masks listed beneath it. This is UV-based, and checking the Seamless option is useful for eliminating any obvious seams created by adding blur.

Setting	Description
Blur Radius	Sets the size or intensity of the blur effect in pixels.
Seamless	Blur across UV seams.
Reset Defaults	Reset all settings of the layer.

Curves #

Curves allow you to adjust a spline curve throughout an image’s tonal range on a graph. You can add a point by clicking on the graph and moving it to adjust the tone. To delete a point, right-click it and choose ‘Delete’, or click and drag it outside the graph.

Setting	Description
Channel	Sets the active color channel shown in the editor.
Reset	Reset the selected channel.
Reset All	Reset all channels.
Live Histogram	When enabled, the graph shows changes to the histogram in real-time.
Color Histogram	Display histogram in color.
Histogram	The upper-right area of the graph represents the highlights, the lower-left area represents the shadows, and the graph’s horizontal axis represents the input levels.

Gradient Map #

A Gradient Map adjustment allows you to map different colors to a tonal range, with the lightest color at one end (white) and the darkest color (black) at the other. The mid-tones handle can be used to shift the balance of the gradient, and additional colors can be added between the main handles by clicking inside the gradient area.

Setting	Description
Gradient Slider	Gradient slider configured by handles. To create a new color, click anywhere in between the main handles. To delete a handle, click and drag it outside of the slider range, or right-click and select Delete.
Context Menu	Right-clicking on the gradient bar or the handle will open a context menu.
Edit	Edit selected handle.
Delete	Delete the selected handle.
Normalize Handles	Evenly spaces all gradient points.
Reset Default Handles	Reset the gradient to default.
Copy Gradient	Copy the selected gradient.
Paste Gradient	Paste copied gradient.
Color Handle	Edit the color value for the selected handle.
Color Position	Edit the horizontal position of the selected color handle.
Alpha Value	Edit the alpha value for the selected handle.
Alpha Position	Edit the horizontal position of the selected alpha handle.

Hue/Saturation #

Adjust the hue, saturation, brightness, and contrast values of the layers below this adjustment. Adjustment layers can be localized when applied as a child layer, and applying it to a mask will only include Value and Contrast sliders.

Setting	Description
Hue	Shifts the hue around the color wheel.
Saturation	Shifts the saturation/desaturation of colors.
Value	Shifts the value of the colors.
Contrast	Shifts the contrast of the colors.
Reset Defaults	Resets the original settings for this channel.
Reset All	Resets the original settings for all channels in this layer.

Invert #

Invert has no settings and simply inverts all the pixel colors and brightness values in the current layer as if the image were converted into a negative.

Levels #

Levels allows you to change a texture’s tonal range and color balance by adjusting the intensity levels of image shadows, mid-tones, and highlights. It has a histogram as a visual guide for adjusting key tones.

Setting	Description
Channel	Sets the active color channel shown in the editor.
Reset	Resets the original settings for this channel.
Reset All	Resets the original settings for all channels.
Live Histogram	Visualize histogram in real-time.
Color Histogram	Display the histogram in color or grayscale.
Left Histogram Value	Adjusts the value of the darks.
Middle Histogram Value	Adjusts the gamma curve.
Right Histogram Value	Adjusts the values of the lights.
Black Output	Clamps the darks to a specified value.
White Output	Clamps the lights to a specified value.

Sharpen #

Shapen layers add a sharpness effect, helping to define edges and detail in the layers below.

Setting	Description
Sharpen Strength	Sets the sharpness or softness of the details.
Sharpen Radius	Sets the size of an area around an edge that should be sharpened.

Recolor #

Recolor layers are used to adjust and remap the colors of existing texture data without repainting it. It allows you to modify color values non-destructively, making it easy to create variations, fine-tune material colors, and quickly iterate on different looks while preserving the underlying texture detail.

Setting	Description
Recolor Mode	Choose the recolorization mode.

Simple #

Applies a single color adjustment across the entire input, uniformly recoloring the texture while preserving the original value variation.

Setting	Description
Visibility	Toggles the visibility of recolorization for the current target color.
Color	Sets the color target.
Reset Color	Reset color to its original state.
Invert Color	Inverts the values of the map.
Contrast	Adjust the contrast of the map.

Primary Color #

Recolors the texture based on a dominant or primary color, allowing you to replace the main color while preserving secondary color information.

Setting	Description
Visibility	Toggles the visibility of recolorization for the current target color.
Color	Sets the color target.
Reset Color	Reset color to its original state.
Invert Color	Inverts the values of the map.
Contrast	Adjust the contrast of map.
Tolerance	Sets the strength of the recolorization effect.

Multiple Colors #

Allows multiple colors to be remapped simultaneously, enabling controlled recoloring of distinct color ranges within the texture.

Setting	Description
Color Count	Determines the amount of target colors.
Auto-Detect	Detect how many target colors are necessary.
Color Reference	Source color (automatically generated).
Visibility	Toggles the visibility of recolorization for the current target color.
Color	Sets the color target.
Reset Color	Reset this color to its original state.
Invert Color	Inverts the values of the map.
Contrast	Adjust the contrast of the map.
Tolerance	Sets the strength of the recolorization effect.

Custom Colors #

Provides full manual control over color remapping by defining custom color targets, allowing precise and tailored recolor results.

Setting	Description
Visibility	Toggles the visibility of recolorization for the current target color.
Source Color	Sets the custom color, which determines the area that will be recolored.
Target Color	Sets the color target.
Reset Color	Reset this color to its original state.
Invert Color	Inverts the values of the map.
Contrast	Adjust the contrast of the map.
Tolerance	Sets the strength of the recolorization effect.