Add hard edge to non-visible areas

shader/lighting/lineShadow.geom

@@ -3,14 +3,14 @@ layout (lines_adjacency) in;
 layout (triangle_strip, max_vertices = 4) out;
 layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 uniform vec3 lightPos;
-vec4 shift (vec4 p) { return (vec4 (p.xyz + (2000*(p.xyz-lightPos)), 1));}
+vec4 shift (vec4 p) { return (vec4 (p.xyz + (1000*(p.xyz-lightPos)), 1));}
 vec4 f (vec4 p) {return (theMat * p);}
 void main()
 {
     vec4 p0 = gl_in[0].gl_Position;
     vec3 n0 = gl_in[2].gl_Position.xyz;
     vec3 n1 = gl_in[3].gl_Position.xyz;
-    vec3 n2 = n0 + n1; // assumes the summands are normalized
+    //vec3 n2 = n0 + n1; // assumes the summands are normalized
     vec3 lightDir = p0.xyz - lightPos.xyz;
     // first test if the edge is part of the silhouette
     // that is, if the normals of the faces connected by the edge point in

shader/lighting/occlude.frag

@@ -2,5 +2,5 @@
 out vec4 fColor;
 void main()
 {
-  fColor = vec4 (0.9,0.5,0,0);
+  fColor = vec4 (0.9,0.5,0,1);
 }

shader/lighting/occlude.geom

@@ -34,18 +34,36 @@ vec4 a6 = theMat * p6;
 vec4 a7 = theMat * p7;
 vec4 a8 = theMat * p8;
 
-  gl_Position = a4; EmitVertex();
-  gl_Position = a3; EmitVertex();
-  gl_Position = a7; EmitVertex();
-  gl_Position = a8; EmitVertex();
+  //gl_Position = a4; EmitVertex();
+  //gl_Position = a3; EmitVertex();
+  //gl_Position = a7; EmitVertex();
+  //gl_Position = a8; EmitVertex();
+  //gl_Position = a5; EmitVertex();
+  //gl_Position = a3; EmitVertex();
+  //gl_Position = a1; EmitVertex();
+  //gl_Position = a4; EmitVertex();
+  //gl_Position = a2; EmitVertex();
+  //gl_Position = a7; EmitVertex();
+  //gl_Position = a6; EmitVertex();
+
+  gl_Position = a1; EmitVertex();
   gl_Position = a5; EmitVertex();
   gl_Position = a3; EmitVertex();
-  gl_Position = a1; EmitVertex();
+  gl_Position = a8; EmitVertex();
   gl_Position = a4; EmitVertex();
-  gl_Position = a2; EmitVertex();
   gl_Position = a7; EmitVertex();
+  gl_Position = a2; EmitVertex();
   gl_Position = a6; EmitVertex();
 
+  //gl_Position = a5; EmitVertex();
+  //gl_Position = a1; EmitVertex();
+  //gl_Position = a8; EmitVertex();
+  //gl_Position = a3; EmitVertex();
+  //gl_Position = a7; EmitVertex();
+  //gl_Position = a4; EmitVertex();
+  //gl_Position = a6; EmitVertex();
+  //gl_Position = a2; EmitVertex();
+
   EndPrimitive();
 } else {}
 }

shader/lighting/wall.geom

@@ -11,7 +11,8 @@ float isLHS (vec2 startV, vec2 testV)
     return sign( -startV.x * testV.y + startV.y * testV.x);
 }
 vec4 shiftCloser (vec4 v)
-{ return vec4 (v.xy , v.z-0.0001 , v.w) ; }
+{ return vec4 (v.xy , v.z , v.w) ; }
+//{ return vec4 (v.xy , v.z-0.0001 , v.w) ; }
 void main()
 {
 vec4 p1 = vec4 (gl_in[0].gl_Position.xy,0,1);