light: remove broken -fence feature

include/light/light.h

@@ -272,7 +272,6 @@ void WorldToTexCoord(const vec3_t world, const texinfo_t *tex, vec_t coord[2]);
 vec_t
 TriangleArea(const vec3_t v0, const vec3_t v1, const vec3_t v2);
     
-extern qboolean testFenceTextures;
 extern qboolean surflight_dump;
 
 extern char mapfilename[1024];

light/light.cc

@@ -67,7 +67,6 @@ qboolean bounce = false;
 vec_t bouncescale = 1.0f;
 vec_t bouncecolorscale = 0.0f;
 
-qboolean testFenceTextures = false;
 qboolean surflight_dump = false;
 
 static facesup_t *faces_sup;    //lit2/bspx stuff
@@ -1326,9 +1325,6 @@ main(int argc, const char **argv)
             bounce = true;
             bouncecolorscale = atof( argv[ ++i ] );
             logprint( "Bounce color scale factor set to %f on command line\n", bouncecolorscale );
-        } else if ( !strcmp( argv[ i ], "-fence" ) ) {
-            testFenceTextures = true;
-            logprint( "Fence texture tracing enabled on command line\n" );
         } else if ( !strcmp( argv[ i ], "-surflight_subdivide" ) ) {
             surflight_subdivide = atof( argv[ ++i ] );
             surflight_subdivide = qmin(qmax(surflight_subdivide, 64.0f), 2048.0f);

man/light.1

@@ -68,11 +68,6 @@ ignoring all lights in the map. Useful for previewing and turning the dirt setti
 .IP "\fB\-dirtmode n\fP | \fB\-dirtdepth n\fP | \fB\-dirtscale n\fP | \fB\-dirtgain n\fP | \fB\-dirtangle n\fP"
 Fine-tune the dirtmapping, overriding the corresponding worldspawn keys. See the
 worldspawn keys below.
-.IP "\fB\-fence\fP"
-Enables light to pass through transparent pixels in fence textures
-(textures with a "{" prefix). Typically, shadow-casting fences should
-be a func_wall entity with the "_shadow" "1" key set. Default is for
-transparent pixels to block light.
 .IP "\fB\-gamma [n]\fP"
 Adjust brightness of final lightmap. Default 1, >1 is brighter, <1 is darker. See "_gamma" worldspawn key.
 .IP "\fB\-lux\fP"