This window can be accessed by going to the top menu bar and selecting World → Environment Editor → Sky Presets → New preset or Edit Preset 75). The windows are almost the same, except that in Edit mode, you select an exiting preset to modify, while in Create mode, you supply a new name to use and start out with default values.

Atmosphere and Sun Tab

Create/Edit Sky Preset

Atmosphere Settings

  • Blue Horizon: Drag the RGB (Red, Green, and Blue) sliders to adjust the sky's color. The I (Intensity) slider moves all three RGB sliders in unison.
  • Blue Density: Affects the overall color saturation of the sky and fog. Control individual saturation channels with the RGB sliders. Drag the I slider to the right to make colors brighter and more vibrant; move it all the way to the left to make colors duller, eventually fading to black and white.
  • Haze Horizon: One of the most useful settings for adjusting overall light exposure. Can simulate many exposure settings, such as white-outs from the sun and darker, closed-iris settings.
  • Haze Density: Controls the level of dull, gray haze in the atmosphere. Effective for simulating scenes with high levels of smoke and man-made pollutants, as well as simulating fog and mist.
  • Density Multiplier: Affects the overall atmospheric density. At lower settings, it creates a feeling of “thin air,” and at higher settings, it creates a very heavy, smoggy effect.
  • Distance Multiplier: Adjusts the Viewer's perceived distance. A value of 0.0 effectively turns off WindLight's influence on terrain and objects. Values greater than 1.0 simulate greater distances for thicker atmospheric effects.
  • Max Altitude: Adjusts the altitude calculations for atmospheric lighting. At later times of day, this is useful for adjusting how “deep” the sunset appears.

Sun and Moon Settings

  • Sun/Moon Color: Click to adjust the color and intensity of direct light.
  • Ambient: Click to adjust the color and intensity of ambient atmospheric light.
  • Sun Glow Focus: Focus controls how blurred the sun is over the sky. At very high settings, this can cause the sun to completely wash out a portion of the sky with brilliant light, and at zero, will cause the sun (but not the light it casts) to disappear completely.
  • Size: Controls the sun's size. If the sun appears blocky, increase PreferencesGraphics → General → Windlight Sky Detail.
  • Star Brightness: Adjusts the brightness of the stars in the sky.
  • Scene Gamma: Adjusts distribution of light and dark. Lower gamma values have higher contrast.
  • Sun/Moon Position: Controls the vertical location of the sun or moon in the sky.
  • East Angle: Controls the horizontal location of the sun or moon in the sky. Similar to azimuth.
  • Make this preset my new sky setting: Applies the preset.

Clouds Tab

Cloud Settings

Create/Edit Sky Preset

  • Cloud Color: Sets the cloud color. White generally looks most realistic, but you can simulate alien planets with strange colors.
  • Cloud Density: Controls cloud positions with the X and Y sliders and how dense they are with the the D (Density) slider.
  • Cloud Coverage: Controls how much the clouds cover the sky.
  • Cloud Scale: Controls how frequently the cloud image repeats on the sky dome; lower values look artificial.
  • Cloud Detail: Controls the detail image layered on top of the main cloud image. X and Y control its position; D controls how puffy or fractured the clouds appear.
  • Cloud Scroll X/Y: Controls cloud speed as they move in the X and Y directions. Lock freezes them.
  • Make this preset my new sky setting: Applies the preset.


If you Edit an existing preset, you can save it with a new name, thus creating a new one.
  • sky_preset_atmosphere.txt
  • Last modified: 2013/09/05 19:15
  • by miro.collas