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docs: document _phong_angle_concave

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Eric Wasylishen 2018-02-18 16:57:54 -07:00
parent 18f060a04f
commit cf89e7c2b8
1 changed files with 8 additions and 1 deletions
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man/light.1
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@ -229,7 +229,7 @@ When set to 1, spotlight falloff is calculated from the distance to the targeted
.PP
The following keys can be used on any entity with a brush model.
"_minlight", "_mincolor", "_dirt", "_phong", "_phong_angle", "_shadow" are supported on func_detail/func_group as well, if
"_minlight", "_mincolor", "_dirt", "_phong", "_phong_angle", "_phong_angle_concave", "_shadow" are supported on func_detail/func_group as well, if
qbsp from these tools is used.
.IP "\fB""_minlight"" ""n""\fP"
@ -277,6 +277,13 @@ Enables phong shading on faces of this model with a custom angle. Adjacent faces
Consider setting "_anglescale" to "1" on lights or worldspawn to make the effect of phong shading more visible.
Use the "-phongdebug" command-line flag to save the interpolated normals to the lightmap for previewing (use "r_lightmap 1" or "gl_lightmaps 1" in your engine to preview.)
.IP "\fB""_phong_angle_concave"" ""n""\fP"
Optional key for setting a different angle threshold for concave joints.
A pair of faces will either use "_phong_angle" or "_phong_angle_concave" as the smoothing threshold, depending on whether the joint between the faces is concave or not.
"_phong_angle(_concave)" is the maximum angle (in degrees) between the face normals that will still cause the pair of faces to be smoothed.
The minimum setting for "_phong_angle_concave" is 1, this should make all concave joints non-smoothed (unless they're less than 1 degree apart, almost a flat plane.)
If it's 0 or unset, the same value as "_phong_angle" is used.
.IP "\fB""_lightignore"" ""n""\fP"
1 makes a model receive minlight only, ignoring all lights / sunlight. Could be useful on rotators / trains.