Texture Fog Methods

Textures to encode fog



• 1D, 2D, or 3D texture as fog lookup table
  • Map eye position to texture coordinates with GL_EYE_LINEAR texgen
  • Use luminance texture with GL_BLEND texture environment and set fog color in texture environment color
  • Or an RGBA texture with GL_DECAL mode can encode the fog factor in A and the fog color in RGB

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