diff --git a/src/core/pattern.js b/src/core/pattern.js
index c6721af59..a922ae7e8 100644
--- a/src/core/pattern.js
+++ b/src/core/pattern.js
@@ -618,29 +618,32 @@ Shadings.Mesh = (function MeshClosure() {
           break;
         case 1:
           tmp1 = ps[12]; tmp2 = ps[13]; tmp3 = ps[14]; tmp4 = ps[15];
-          ps[12] = pi + 5; ps[13] = pi + 4;  ps[14] = pi + 3;  ps[15] = pi + 2;
-          ps[ 8] = pi + 6; ps[ 9] = pi + 11; ps[10] = pi + 10; ps[11] = pi + 1;
-          ps[ 4] = pi + 7; ps[ 5] = pi + 8;  ps[ 6] = pi + 9;  ps[ 7] = pi;
-          ps[ 0] = tmp1;   ps[ 1] = tmp2;    ps[ 2] = tmp3;    ps[ 3] = tmp4;
+          ps[12] = tmp4;   ps[13] = pi + 0;  ps[14] = pi + 1;  ps[15] = pi + 2;
+          ps[ 8] = tmp3;   ps[ 9] = pi + 9;  ps[10] = pi + 10; ps[11] = pi + 3;
+          ps[ 4] = tmp2;   ps[ 5] = pi + 8;  ps[ 6] = pi + 11; ps[ 7] = pi + 4;
+          ps[ 0] = tmp1;   ps[ 1] = pi + 7;  ps[ 2] = pi + 6;  ps[ 3] = pi + 5;
           tmp1 = cs[2]; tmp2 = cs[3];
-          cs[2] = ci + 1; cs[3] = ci;
-          cs[0] = tmp1;   cs[1] = tmp2;
+          cs[2] = tmp2;   cs[3] = ci;
+          cs[0] = tmp1;   cs[1] = ci + 1;
           break;
         case 2:
-          ps[12] = ps[15]; ps[13] = pi + 7; ps[14] = pi + 6;  ps[15] = pi + 5;
-          ps[ 8] = ps[11]; ps[ 9] = pi + 8; ps[10] = pi + 11; ps[11] = pi + 4;
-          ps[ 4] = ps[7];  ps[ 5] = pi + 9; ps[ 6] = pi + 10; ps[ 7] = pi + 3;
-          ps[ 0] = ps[3];  ps[ 1] = pi;     ps[ 2] = pi + 1;  ps[ 3] = pi + 2;
-          cs[2] = cs[3]; cs[3] = ci + 1;
-          cs[0] = cs[1]; cs[1] = ci;
+          tmp1 = ps[15];
+          tmp2 = ps[11];
+          ps[12] = ps[3]; ps[13] = pi + 0; ps[14] = pi + 1;  ps[15] = pi + 2;
+          ps[ 8] = ps[7]; ps[ 9] = pi + 9; ps[10] = pi + 10; ps[11] = pi + 3;
+          ps[ 4] = tmp2;  ps[ 5] = pi + 8; ps[ 6] = pi + 11; ps[ 7] = pi + 4;
+          ps[ 0] = tmp1;  ps[ 1] = pi + 7; ps[ 2] = pi + 6;  ps[ 3] = pi + 5;
+          tmp1 = cs[3];
+          cs[2] = cs[1]; cs[3] = ci;
+          cs[0] = tmp1;  cs[1] = ci + 1;
           break;
         case 3:
-          ps[12] = ps[0];  ps[13] = ps[1];   ps[14] = ps[2];   ps[15] = ps[3];
-          ps[ 8] = pi;     ps[ 9] = pi + 9;  ps[10] = pi + 8;  ps[11] = pi + 7;
-          ps[ 4] = pi + 1; ps[ 5] = pi + 10; ps[ 6] = pi + 11; ps[ 7] = pi + 6;
-          ps[ 0] = pi + 2; ps[ 1] = pi + 3;  ps[ 2] = pi + 4;  ps[ 3] = pi + 5;
-          cs[2] = cs[0]; cs[3] = cs[1];
-          cs[0] = ci;    cs[1] = ci + 1;
+          ps[12] = ps[0];  ps[13] = pi + 0;  ps[14] = pi + 1;  ps[15] = pi + 2;
+          ps[ 8] = ps[1];  ps[ 9] = pi + 9;  ps[10] = pi + 10; ps[11] = pi + 3;
+          ps[ 4] = ps[2];  ps[ 5] = pi + 8;  ps[ 6] = pi + 11; ps[ 7] = pi + 4;
+          ps[ 0] = ps[3];  ps[ 1] = pi + 7;  ps[ 2] = pi + 6;  ps[ 3] = pi + 5;
+          cs[2] = cs[0]; cs[3] = ci;
+          cs[0] = cs[1]; cs[1] = ci + 1;
           break;
       }
       mesh.figures.push({