setFogMode (Exp2 density) = do
   fogi FogMode (marshalFogMode' Exp2')
   fogf FogDensity density

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setFogMode (Exp2 density) = do
   fogi FogMode (marshalFogMode' Exp2')
   fogf FogDensity density

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setFogMode (Exp2 density) = do
   fogi FogMode (marshalFogMode' Exp2')
   fogf FogDensity density

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