Remove inputs to wallShadow shader

shader/wallShadow.geom

@@ -1,8 +1,7 @@
 #version 430 core
 layout (points) in;
-layout (triangle_strip, max_vertices = 12) out;
+layout (triangle_strip, max_vertices = 4) out;
 
-in vec4 vBackPoss[];
 uniform vec2 lightPos;
 uniform mat4 worldMat;
 
@@ -14,40 +13,12 @@ void emitLine (vec2 pa)
     EmitVertex();
 }
 
-float isLHS (vec2 startV, vec2 testV)
-{
-    return sign( -startV.x * testV.y + startV.y * testV.x);
-}
-
 void main()
 {
   vec4 frontL4 = worldMat * vec4(gl_in[0].gl_Position.xy, 0 ,1);
   vec4 frontR4 = worldMat * vec4(gl_in[0].gl_Position.zw, 0 ,1);
   vec2 frontL = frontL4.xy;
   vec2 frontR = frontR4.xy;
-  vec4 backR4 = worldMat * vec4(vBackPoss[0].xy, 0 ,1);
-  vec4 backL4 = worldMat * vec4(vBackPoss[0].zw, 0 ,1);
-  vec2 backL = backL4.xy;
-  vec2 backR = backR4.xy;
-
-//    if (isLHS( lightPos - frontL, frontR - frontL) < 0)
-//  //  if (isLHS( lightPos - backL, backR - backL) < 0)
-//    {
-//  //  emitLine (frontL);
-//  //  emitLine (backL);
-//  //  emitLine (frontL);
-//  //  emitLine (frontR);
-//  //  emitLine (backR);
-//  //  emitLine (frontR);
-//  
-//    emitLine (backR);
-//    emitLine (backL);
-//    }
-//    else
-//    {
-//    emitLine (backR);
-//    emitLine (backL);
-//    }
 
     emitLine (frontR);
     emitLine (frontL);

shader/wallShadow.vert

@@ -1,17 +1,7 @@
 #version 430 core
 layout (location = 0) in vec4 poss;
-layout (location = 1) in vec4 backPoss;
-
-out vec4 vBackPoss;
-
-//uniform vec2 winSize;
-//uniform float zoom;
-//uniform float rotation;
-//uniform vec2 translation;
-//uniform mat4 worldMat;
 
 void main()
 {
   gl_Position = poss;
-  vBackPoss = backPoss;
 }