S_ZFogExponential Mixes a fog color into the source clip using depth values from a ZBuffer input. The fog starts at the nearest depth and increases exponentially to the farthest depth at a rate depending on the Fog Density. In the Sapphire Stylize effects submenu. Inputs: Source:  The clip to be processed. ZBuffer:  The input clip containing depth values for each Source pixel. These values should be in the range of black to white, and it is best if not anti-aliased. Normally black corresponds to the farthest objects and white to the nearest, though this can be adjusted using Z Buffer parameter.

Parameters:

Z Near:   Default: 0.1,  Range: 0 to 1.
The value of the input Z corresponding to near objects. Zero means black areas of the ZBuffer are near, and one means white areas are near.

Z Far:   Default: 1,  Range: 0 to 1.
The value of the input Z corresponding to far objects. Zero means black areas of the ZBuffer are far, and one means white areas are far.

Fog Color:   Default rgb: [0.5 0.5 0.5].
The fog color should normally match the sky or background color of the source clip. Use gray for mist, brown for smog, blue for underwater, etc.

Fog Density:   Default: 0.7,  Range: 0 to 1.
The density of the fog.

Zbuffer Use:   Popup menu,  Default: Luma.
Determines how the ZBuffer input channels make a monochrome z image.

Luma:  the luminance of the RGB channels is used.

Alpha:  only the Alpha channel is used.

See Also:

ZFogLinear ZBlur

ZComp ZGlow

Sapphire Plug-ins Introduction

© 2009, GenArts, Inc. All rights reserved.