src/java.desktop/share/classes/sun/java2d/marlin/Renderer.java

*** 45,54 ****
--- 45,57 ----
      static final float SUBPIXEL_SCALE_X = (float) SUBPIXEL_POSITIONS_X;
      static final float SUBPIXEL_SCALE_Y = (float) SUBPIXEL_POSITIONS_Y;
      static final int SUBPIXEL_MASK_X = SUBPIXEL_POSITIONS_X - 1;
      static final int SUBPIXEL_MASK_Y = SUBPIXEL_POSITIONS_Y - 1;
  
+     static final float RDR_OFFSET_X = 0.501f / SUBPIXEL_SCALE_X;
+     static final float RDR_OFFSET_Y = 0.501f / SUBPIXEL_SCALE_Y;
+ 
      // number of subpixels corresponding to a tile line
      private static final int SUBPIXEL_TILE
          = TILE_H << SUBPIXEL_LG_POSITIONS_Y;
  
      // 2048 (pixelSize) pixels (height) x 8 subpixels = 64K
*** 670,727 ****
          // shift y by -0.5 for fast ceil(y - 0.5):
          return SUBPIXEL_SCALE_Y * pix_y - 0.5f;
      }
  
      @Override
!     public void moveTo(float pix_x0, float pix_y0) {
          closePath();
          final float sx = tosubpixx(pix_x0);
          final float sy = tosubpixy(pix_y0);
          this.sx0 = sx;
          this.sy0 = sy;
          this.x0 = sx;
          this.y0 = sy;
      }
  
      @Override
!     public void lineTo(float pix_x1, float pix_y1) {
          final float x1 = tosubpixx(pix_x1);
          final float y1 = tosubpixy(pix_y1);
          addLine(x0, y0, x1, y1);
          x0 = x1;
          y0 = y1;
      }
  
      @Override
!     public void curveTo(float x1, float y1,
!                         float x2, float y2,
!                         float x3, float y3)
      {
!         final float xe = tosubpixx(x3);
!         final float ye = tosubpixy(y3);
!         curve.set(x0, y0, tosubpixx(x1), tosubpixy(y1),
!                           tosubpixx(x2), tosubpixy(y2), xe, ye);
          curveBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
          x0 = xe;
          y0 = ye;
      }
  
      @Override
!     public void quadTo(float x1, float y1, float x2, float y2) {
!         final float xe = tosubpixx(x2);
!         final float ye = tosubpixy(y2);
!         curve.set(x0, y0, tosubpixx(x1), tosubpixy(y1), xe, ye);
          quadBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
          x0 = xe;
          y0 = ye;
      }
  
      @Override
      public void closePath() {
!         addLine(x0, y0, sx0, sy0);
!         x0 = sx0;
!         y0 = sy0;
      }
  
      @Override
      public void pathDone() {
          closePath();
--- 673,734 ----
          // shift y by -0.5 for fast ceil(y - 0.5):
          return SUBPIXEL_SCALE_Y * pix_y - 0.5f;
      }
  
      @Override
!     public void moveTo(final float pix_x0, final float pix_y0) {
          closePath();
          final float sx = tosubpixx(pix_x0);
          final float sy = tosubpixy(pix_y0);
          this.sx0 = sx;
          this.sy0 = sy;
          this.x0 = sx;
          this.y0 = sy;
      }
  
      @Override
!     public void lineTo(final float pix_x1, final float pix_y1) {
          final float x1 = tosubpixx(pix_x1);
          final float y1 = tosubpixy(pix_y1);
          addLine(x0, y0, x1, y1);
          x0 = x1;
          y0 = y1;
      }
  
      @Override
!     public void curveTo(final float pix_x1, final float pix_y1,
!                         final float pix_x2, final float pix_y2,
!                         final float pix_x3, final float pix_y3)
      {
!         final float xe = tosubpixx(pix_x3);
!         final float ye = tosubpixy(pix_y3);
!         curve.set(x0, y0, tosubpixx(pix_x1), tosubpixy(pix_y1),
!                   tosubpixx(pix_x2), tosubpixy(pix_y2), xe, ye);
          curveBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
          x0 = xe;
          y0 = ye;
      }
  
      @Override
!     public void quadTo(final float pix_x1, final float pix_y1,
!                        final float pix_x2, final float pix_y2)
!     {
!         final float xe = tosubpixx(pix_x2);
!         final float ye = tosubpixy(pix_y2);
!         curve.set(x0, y0, tosubpixx(pix_x1), tosubpixy(pix_y1), xe, ye);
          quadBreakIntoLinesAndAdd(x0, y0, curve, xe, ye);
          x0 = xe;
          y0 = ye;
      }
  
      @Override
      public void closePath() {
!         if (x0 != sx0 || y0 != sy0) {
!             addLine(x0, y0, sx0, sy0);
!             x0 = sx0;
!             y0 = sy0;
!         }
      }
  
      @Override
      public void pathDone() {
          closePath();