Patches

Surface Patches
    -chopcurve
    -choplight
    -chopsky
    -chopwarp

Related Topics


Surface Patches

To perform the radiosity calculations, qrad3 creates a mesh of "patches" for every visible surface. Each patch covers a specific portion of the surface, and manages the lighting received & emitted from that area.

Qrad3's -chop option can be used to change the size of all the patches. Larger -chop sizes process faster (because less patches have to be created to cover an area), but yield lower lighting quality. Smaller -chop sizes can yield higher quality, but will dramatically increase time and memory requirements. This can easily exceed the maximum number of patches allowed, and prevent compiling. ArghRad adds options to change patch sizes only for certain important surface types. This allows an increase in quality with far less impact on time and memory requirements.

Note: ArghRad normally tries to reduce the "splotchy" lighting around surface lights seen with Qrad3. This usually improves lighting quality enough, without having to change any -chop* values.


 
 
-chopcurve  size

location: command-line    version: 2.00  
size: 16-256 default: 32, or -chop size if smaller

Sets the patch size for all Phong-shaded curve surfaces. Larger sizes cause more obvious breaks in the smooth lighting (hence the smaller default: 32).

no example image no example map
 

 
 
-choplight  size

location: command-line    version: 1.00  
size: 16-256 default: -chop size (default 64)

Sets the patch size for all light-emitting, normal surfaces. It does not affect light-emitting sky or warping surfaces.

no example image example map
 

 
 
-chopsky  size

location: command-line    version: 1.00  
size: 16-256 default: -chop size (default 64)

Sets the patch size for all light-emitting, sky surfaces. These patch sizes can affect the quality of certain sun options: _sky_ambient, _sky_surface, and especially _sun_diffade.

no example image no example map
 

 
 
-chopwarp  size

location: command-line    version: 1.00  
size: 16-256 default: -chop size (default 64)

Sets the patch size for all light-emitting, warping surfaces (ie. liquids).

no example image no example map
 

Related Topics

-radmin