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Surface Patches
-chopcurve
-choplight
-chopsky
-chopwarp
Related Topics
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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.
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-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).
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| no example image | no example map | ||
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-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.
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| no example image | example map | ||
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-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.
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| no example image | no example map | ||
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-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).
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| no example image | no example map | ||
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