"fog light"
Class	Foreground
Synopsis	Volumetric lighting with point or spot light sources (illuminated fog effect around lights).
Arguments	"fog density" Type: LtFloat Default: 0.01 Range: [ 0, inf ] Hint: [ 0, 100 ]
Location	lishclas
Description	Atmospheric scattering from point and spot light sources. A constant distribution of particles in the atmosphere is assumed. The light fall-off used in the scattering computations is 1/d2, so light sources tend to look saturated near their centre. Light sources should therefore also use a 1/d2 type fall-off ( ISL or ISL_NO_CLAMP) for consistency between atmospheric and surface shading. Also note that spot lights should have an almost constant angular intensity distribution (i.e., a hard-edged illumintation cone). Volumetric shadows are not implemented by this shader. Previous page alphabetically (fog) Next page alphabetically (foregroundscaledimage) Index
Copyright © 1990-2005, 2006 LightWork Design Limited. All rights reserved