General cleanup

shader/dualTwoD/ellipse.vert

@@ -5,7 +5,6 @@ layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 out vec4 vCol;
 void main()
 {
-  //gl_Position = theMat * vec4(pos,1);
   gl_Position = vec4(pos,1);
   vCol = col;
 }

shader/lighting/lineShadow.vert

@@ -58,7 +58,8 @@ void main()
   // that is, if the normals of the faces connected to the edge are in
   // "different directions" wrt the light direction
   // (first test the "drawbit")
-  if (p0.w==1 && dot(n0, lightDir) * dot(n1, lightDir) <= 0 &&
+  //if (p0.w==1 && dot(n0, lightDir) * dot(n1, lightDir) <= 0 &&
+  if ( dot(n0, lightDir) * dot(n1, lightDir) <= 0 &&
       (dot(lightDir, lightDir) < ru2 || dot(lightDir2, lightDir2) < ru2))
   // using <= rather than < seems to get rid of overlapping shadow
   // artefacts

shader/picture/charArray.vert

@@ -1,7 +1,8 @@
 #version 450 core
 layout (location = 0) in vec3 inPos;
 layout (location = 1) in vec4 inColor;
-layout (location = 2) in vec4 inTexCoord;
+//layout (location = 2) in vec4 inTexCoord;
+layout (location = 2) in vec3 inTexCoord;
 layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 out vec4 vColor;
 out vec3 vTexCoord;
@@ -9,5 +10,6 @@ void main()
 {
     gl_Position = theMat * vec4(inPos.xyz, 1.0);
     vColor = inColor;
-    vTexCoord = inTexCoord.xyz;
+    //vTexCoord = inTexCoord.xyz;
+    vTexCoord = inTexCoord;
 }