try to handle properly fillcolor != linecolor in opengl polypolygons drawing

Change-Id: I962416f48fdb348d8a3d95edf747cfe2f1c929c9

vcl/opengl/gdiimpl.cxx

@@ -1191,7 +1191,7 @@ void OpenGLSalGraphicsImpl::drawPolyPolygon( sal_uInt32 nPoly, const sal_uInt32*
         }
     }
 
-    if( UseSolidAA( mnLineColor ) )
+    if( mnLineColor != mnFillColor && UseSolidAA( mnLineColor ) )
     {
         // TODO Use glMultiDrawElements or primitive restart
         for( sal_uInt32 i = 0; i < nPoly; i++ )
@@ -1212,6 +1212,20 @@ bool OpenGLSalGraphicsImpl::drawPolyPolygon( const ::basegfx::B2DPolyPolygon& rP
     if( UseSolid( mnFillColor, fTransparency ) )
         DrawPolyPolygon( rPolyPolygon );
 
+    if( mnLineColor != mnFillColor && UseSolidAA( mnLineColor ) )
+    {
+        for( sal_uInt32 i = 0; i < rPolyPolygon.count(); i++ )
+        {
+            const basegfx::B2DPolygon& polygon = rPolyPolygon.getB2DPolygon( i );
+            for( sal_uInt32 j = 0; j < polygon.count(); ++j )
+            {
+                const basegfx::B2DPoint& rPt1 = polygon.getB2DPoint( j );
+                const basegfx::B2DPoint& rPt2 = polygon.getB2DPoint(( j + 1 ) % polygon.count());
+                DrawLineAA( rPt1.getX(), rPt1.getY(), rPt2.getX(), rPt2.getY());
+            }
+        }
+    }
+
     PostDraw();
 
     return true;