The paint layer is a powerful feature in Mixer where it allows the user to paint materials directly on top of the surface or a 3D mesh.

A Paint Layer is added to the Layer Stack as a normal layer but no mask can be applied to the Paint Layer. It can be clipped to the underlying layer as a normal layer.

Paint Layer properties

  • Resolution: Modify the resolution of the Paint Layer. This will affect the level of detail of your painting on the surface. The resolution cannot be increased after it’s been set and edited.
  • Opacity: Control the Transparency of the layer.

Component Maps

You can manipulate each individual component of the Paint Layer. Click the toggle on the right end within the Layer Stack. Here you can modify settings for each map.

  • Blending Mode: Specify blending mode for the component. For more information on the modes available, see Blend modes.
  • Opacity: Control the transparency of the component map.
  • Load image: Load your own Diffuse, Specular, Roughness, or Displacement maps.
  • Clear: Clears the selected map.
  • Invert channel: Inverts the map.

Brush Panel

When a Paint Layer is selected, a brush panel will show up on the left of the app. See Painting for more information.

Brush Preset

This panel contain all the brushes a user have. Custom brush and those downloaded from Megascans library are shown here. You can select your desired brush to start painting.

At the top left corner, you have the Brush Tool to select your Brush (Shortcut: B), and the Eraser Tool to erase your paint layer (Shortcut: E). You can also choose between brush presets. At the bottom left, you may either Save or Delete a brush. By clicking the brush thumbnail you can also load a custom image to for use as a brush.

Brush Settings

  • Size: Increase or decrease the size of your selected brush
  • Spacing: Set the spacing between successive brush marks within one stroke.
  • Opacity: Control the transparency or strength of the brush.
  • Flow: Control the rate at which the brush paints.

Brush Shape

  • Softness: Vary the radius of the maximum intensity.
  • Center curve: Control the curve along the brush.
  • Base curve: Control the curve along the base of the brush.

Brush Jitter

Brush jitter will randomly make changes to the aspect of the brush as we paint with it.

Size Jitter: Adjust the jittery effect produced by the brush.
Angle Jitter: Change angle of the jittery effect produced by the brush.
Flow Jitter: Adjust the speed of jittery effect produced while painting.

Paint Channels

  • Albedo: Pick color of the brush through this channel
  • Metalness: Use this slider to chose between metal or non-metal material properties
  • Roughness: Increase or decrease the roughness effect in your brush
  • Displacement: Set the displacement for your brush stroke

Managing Your Brush Library

Mixer includes a number of default brushes, including two customizable circle brushes. You can also load custom brushes and download more from the Megascans library.

Load Custom Image as Brush

  • Hover the mouse pointer over the brush thumbnail (see 1 in the image above) under the Brush Shape section.

  • Browse to the brush image and select to load the custom brush into Mixer.

  • The new brush will be loaded and is ready for use.

After loading a custom brush, it will not appear in your library until you save it.

Saving Brush

To save a brush, click the Save icon located under the Brush Presets section (1 in the image above) and specify the name of the brush. The brush will now appear in the Brush Library, and will retain its settings. Multiple versions of the same brush can be saved.

Download Megascans Brushes

  • Go to the Online tab in Mixer (see Online) and select ‘Brush’ from the filter drop-down.
  • Select and download a brush.
  • The new brush will appear for use in the Brush Library.


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