.. _bpy.types.ShaderFxGlow:

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Glow Visual Effect
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The *Glow* Visual Effect add a glowing rim around the object.


Options
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.. figure:: /images/grease-pencil_visual-effects_glow_panel.png
   :align: right

   Glow Visual Effect.

Mode
   Determines the mode for the glow effect.

   Luminance
      The glow light illuminates the entire object.

   Color
      The glow light only affect a single color.

Glow Color
   Defines the glow color.

   Color
      When Color Mode is selected, allows to select a single color to apply the glow light.

   Threshold
      When Luminance Mode is selected, limits the colors affected by the glow light.
      (A value of 1 means no colors affected.)

Radius
   Adds a blur effect to the glow. If 0 no blur is used.

Samples
   Number of Blur samples (0 disabled the blur effect).

Use Alpha Mode
   When enabled, glow only affects alpha areas.


Example
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.. list-table:: Glow Effect samples.

   * - .. figure:: /images/grease-pencil_visual-effects_glow_original.png
          :width: 200px

          Original image.

     - .. figure:: /images/grease-pencil_visual-effects_glow_luminance.png
          :width: 200px

          Mode: Luminance.

     - .. figure:: /images/grease-pencil_visual-effects_glow_luminance-alpha.png
          :width: 200px

          Mode: Luminance (Alpha mode).

     - .. figure:: /images/grease-pencil_visual-effects_glow_color.png
          :width: 200px

          Mode: Color (Black lines).