OpenGL’s Built-inFog Model

Assumptions



• Uniform fog color (“color” of the atmosphere)
• Uniform fog density throughout scene
• Fog is essentially a weighted blend C = f Cr + (1 - f) Cfwhere Cr = pre-fog fragment color, Cf = uniform fog color, and f = fog factor
• Fog factor computed per-fragment based oneye-distance of given fragment

Previous slide

Next slide

Back to first slide

View graphic version