diff --git a/java/libraries/opengl/examples/Retained/PolyImmediate/PolyImmediate.pde b/java/libraries/opengl/examples/Retained/PolyImmediate/PolyImmediate.pde
index ecf02efa2..8efcd50b7 100755
--- a/java/libraries/opengl/examples/Retained/PolyImmediate/PolyImmediate.pde
+++ b/java/libraries/opengl/examples/Retained/PolyImmediate/PolyImmediate.pde
@@ -3,16 +3,19 @@ size(100, 100, P3D);
 beginShape(POLYGON);
 fill(0, 255, 0, 255);
 stroke(0, 0, 255, 255);
-strokeWeight(10);
+strokeWeight(5);
 strokeJoin(ROUND);
+beginContour();
 vertex(10, 10);
 vertex(10, 90);
 vertex(90, 90);
 vertex(90, 10);  
-breakShape();
+endContour();
+beginContour();
 vertex(40, 40);
 vertex(70, 40);
 vertex(70, 70);
 vertex(40, 70);
+endContour();
 endShape(CLOSE);
 
diff --git a/java/libraries/opengl/examples/Retained/PolyRetain/PolyRetain.pde b/java/libraries/opengl/examples/Retained/PolyRetain/PolyRetain.pde
index 3fc7961a8..54b260c06 100755
--- a/java/libraries/opengl/examples/Retained/PolyRetain/PolyRetain.pde
+++ b/java/libraries/opengl/examples/Retained/PolyRetain/PolyRetain.pde
@@ -3,17 +3,20 @@ size(100, 100, P3D);
 PShape3D obj = (PShape3D)createShape(POLYGON);
 obj.fill(0, 255, 0, 255);
 obj.stroke(0, 0, 255, 255);
-obj.strokeWeight(10);
+obj.strokeWeight(5);
 obj.strokeJoin(ROUND);
+obj.beginContour();
 obj.vertex(10, 10);
 obj.vertex(10, 90);
 obj.vertex(90, 90);
 obj.vertex(90, 10);  
-obj.breakShape();
+obj.endContour();
+obj.beginContour();
 obj.vertex(40, 40);
 obj.vertex(70, 40);
 obj.vertex(70, 70);
 obj.vertex(40, 70);
+obj.endContour();
 obj.end(CLOSE);
 
 shape(obj);
diff --git a/java/libraries/opengl/src/processing/opengl/PGraphicsOpenGL.java b/java/libraries/opengl/src/processing/opengl/PGraphicsOpenGL.java
index c2e635a6d..3ef24f62c 100644
--- a/java/libraries/opengl/src/processing/opengl/PGraphicsOpenGL.java
+++ b/java/libraries/opengl/src/processing/opengl/PGraphicsOpenGL.java
@@ -8529,8 +8529,8 @@ public class PGraphicsOpenGL extends PGraphics {
       float dy = y1 - y0;
       float len = PApplet.sqrt(dx * dx + dy * dy);
 
-      float linePerpX = -dy * (strokeWeight / len);
-      float linePerpY =  dx * (strokeWeight / len);
+      float linePerpX = -dy * (0.5f * strokeWeight / len);
+      float linePerpY =  dx * (0.5f * strokeWeight / len);
       
       tessGeo.putLineVertexIntoFill(inGeo, i0, +linePerpX, +linePerpY, vcount);
       tessGeo.fillIndices[icount++] = vcount;