All about Materials and Textures

[Thomas]

The specular map handles the specular intensity and power for each pixel. The intensity uses the R channel and the power in the G channel, the B channel is not used and shall be black. Intensity sets the amount of specularity applied to a pixel, the higher value of the channel, the higher intensity. Power sets the sharpness of the specular highlight, a low value give a dull and diffuse look, while a high value give a shiny look.