2D Glow

DEPRECATED. This shader is unsupported, but it may still get installed with Softimage to provide compatibility with older scenes that use it. It is recommended that you replace unsupported shaders in your scenes with equivalent shaders from the current Softimage shader library.

| Glow Color | Glow Spread | Noise

Shader Type: Output

Output: Color (RGB) value

Important

It is important to note that this 2D Glow shader is used internally by the glow property to set up the glow effect on the object. The 2D Glow shader cannot be used by itself without the glow property. See the Glow Property Editor [Properties Reference].

the 2D Glow shader applies the glow effect as a 2D process on top of the rendered image. You must wait until the initial image is rendered before seeing the glow effect.

Glow Color

Color	Defines the glow's color. The selected color cannot be intensified.
Opacity	Controls the glow's opacity. 0 = transparent; 1= opaque (glow is intense enough to conceal any color behind it)
Intensity	Defines the glow's intensity. Tip: Switching object color on and increasing this parameter results in a more protruding glow.
Object Color	Uses the object's color to determine the glow. Tip: Leaving this parameter off increases rendering speed.
Heed Depth	Switches on a depth-buffer algorithm for the glow. Objects in front of the glowing object(s) will then obscure parts of the glow properly. Due to the inherent imprecision of the tag channel, a slight under- or overlap may occur on the object's edges. Tip: Leaving this parameter off increases rendering speed.
Safe	Takes the intensity of the underlying object into consideration when adding the glow.
Glow Only	Creates the glow only into an output file. Useful when the glow is applied on an object that will be composited into another scene.

Glow Spread

Size	Defines how far the glow stretches from the object.
Minimum Level	Controls the precision of the glow. An algorithm searches outward from the object: as the algorithm moves outward, its level drops. Tip: If the value is too high, the edge of the glow becomes visible. Lower the value a little until the edge is not visible. This parameter can make a big difference to the scene's rendering time.
Linear	Changes the curve to a linear one, which makes the glow more visible but less attractive.
Exponential	Changes the curve to an exponential one, which makes the glow less visible but more attractive.
Exclude Object	Does not apply a glow to the object itself, only to its edges. Tip: Use this parameter when you don't want the glow to obscure the object.
Shrink Object	To reduce edge artifacts you must shrink the apparent size of the original object before applying the glow. Tip: When working with narrow spaces between objects, you can reduce artifacts by increasing this parameter.

Noise

Amplitude	Defines the noise amplitude. Noise is subtracted from the full glow's intensity.
Scale	Defines the size of the noise. When increased, the variations are slower across the surface.
Animate	Makes the noise animate with time.
Object Space	Makes the glow cling to the object. When the object is moved or scaled, the glow follows.
Time Offset	Defines the time offset for the noise animation. Useful for multi-part renderings.
Time Scale	Defines the time scale. At a value of 1, the noise changes every second on average. The higher the value, the faster the change.

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