Cleanup

shader/wall/basic.geom

@@ -6,7 +6,6 @@ in vec2 vTexAng[];
 out float gAng;
 out vec2 tPos;
 out vec4 gPos;
-out vec4 gNorm;
 out vec3 gTexCoords;
 // consider using isLHS to check if the wall is facing the center
 float isLHS (vec2 startV, vec2 testV)
@@ -25,19 +24,15 @@ void main()
   float tcoordx = dist / 50;
   vec4 norm = vec4( d.y, -d.x, 0, 0);
   gPos = p1; tPos = vec2 ( 1,-1) ; gl_Position = vec4(theMat * p1); 
-  gNorm = gPos - norm;
   gTexCoords = vec3 (0,0,tcoordz);
   EmitVertex();
   gPos = p3; tPos = vec2 ( 1, 1) ; gl_Position = vec4(theMat * p3); 
-  gNorm = gPos - norm;
   gTexCoords = vec3 (0,2,tcoordz);
   EmitVertex();
   gPos = p2; tPos = vec2 (-1,-1) ; gl_Position = vec4(theMat * p2); 
-  gNorm = gPos - norm;
   gTexCoords = vec3 (tcoordx,0,tcoordz);
   EmitVertex();
   gPos = p4; tPos = vec2 (-1, 1) ; gl_Position = vec4(theMat * p4); 
-  gNorm = gPos - norm;
   gTexCoords = vec3 (tcoordx,2,tcoordz);
   EmitVertex();
   EndPrimitive();