Rename shaders, remove a dependency on Dodge.Data

shader/wall/blank.frag

@@ -0,0 +1,9 @@
+#version 430 core
+in vec4 gColor;
+
+out vec4 fColor;
+
+void main()
+{
+  fColor = gColor;
+}

shader/wall/blank.geom

@@ -0,0 +1,41 @@
+#version 430 core
+layout (points) in;
+layout (triangle_strip, max_vertices = 4) out;
+
+in vec4 vColor [];
+out vec4 gColor;
+
+uniform mat4 perpMat;
+
+// consider using isLHS to check if the wall is facing the center
+// this needs the view from point
+float isLHS (vec2 startV, vec2 testV)
+{
+    return sign( -startV.x * testV.y + startV.y * testV.x);
+}
+
+void main()
+{
+  gColor = vColor[0];
+
+  vec4 p1 = vec4 (gl_in[0].gl_Position.xy,0,1);
+  vec4 p2 = vec4 (gl_in[0].gl_Position.zw,0,1);
+
+  vec4 a1 = perpMat * p1;
+  vec4 a2 = perpMat * p2;
+
+//  if (0 > isLHS (a1.xy - a2.xy, a1.xy - "viewFromPoint")) {
+
+    vec4 p3 = vec4 (p1.xy,-0.5,1);
+    vec4 p4 = vec4 (p2.xy,-0.5,1);
+    
+    vec4 a3 = perpMat * p3;
+    vec4 a4 = perpMat * p4;
+
+    gl_Position = a1; EmitVertex();
+    gl_Position = a3; EmitVertex();
+    gl_Position = a2; EmitVertex();
+    gl_Position = a4; EmitVertex();
+    EndPrimitive();
+//  }
+}

shader/wall/texture.frag

@@ -9,4 +9,5 @@ out vec4 fColor;
 void main()
 {
   fColor = gColor * texture(tex,tPos);
+//  fColor = gColor;
 }