Setting Specularity Using a Texture

When you assign a texture to the Specularity channel, the grayscale values in a texture's alpha channel are applied to the object's highlight. Bright areas of the alpha channel increase the intensity of the highlight, and darker areas decrease the intensity. The alpha channel may also create patterns in the highlight.

When you use a texture to set the Specularity channel's value, the highlight's intensity is determined by the texture's alpha channel values.

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