modules/graphics/src/main/java/com/sun/javafx/sg/prism/RegionImageCache.java

*** 56,75 ****
      private RectanglePacker vPacker;
  
  
      RegionImageCache(final ResourceFactory factory) {
          imageMap = new HashMap<>();
!         backingStore = factory.createRTTexture(WIDTH + WIDTH, HEIGHT, WrapMode.CLAMP_TO_ZERO);
          backingStore.contentsUseful();
          backingStore.makePermanent();
          factory.setRegionTexture(backingStore);
          // Subdivide the texture in two halves where on half is used to store
          // horizontal regions and the other vertical regions. Otherwise, mixing
          // horizontal and vertical regions on the same area, would result in
          // a lot of waste texture space.
!         hPacker = new RectanglePacker(backingStore, 0, 0, WIDTH, HEIGHT, false);
!         vPacker = new RectanglePacker(backingStore, WIDTH, 0, WIDTH, HEIGHT, true);
      }
  
      /**
       * Check if the image size is to big to be stored in the cache
       *
--- 56,87 ----
      private RectanglePacker vPacker;
  
  
      RegionImageCache(final ResourceFactory factory) {
          imageMap = new HashMap<>();
!         WrapMode mode;
!         int pad;
!         if (factory.isWrapModeSupported(WrapMode.CLAMP_TO_ZERO)) {
!             mode = WrapMode.CLAMP_TO_ZERO;
!             pad = 0;
!         } else {
!             mode = WrapMode.CLAMP_NOT_NEEDED;
!             pad = 1;
!         }
!         backingStore = factory.createRTTexture(WIDTH + WIDTH, HEIGHT, mode);
          backingStore.contentsUseful();
          backingStore.makePermanent();
          factory.setRegionTexture(backingStore);
          // Subdivide the texture in two halves where on half is used to store
          // horizontal regions and the other vertical regions. Otherwise, mixing
          // horizontal and vertical regions on the same area, would result in
          // a lot of waste texture space.
!         // Note that requests are already padded on the right and bottom edges
!         // (and that includes the gap between the caches) so we only have to
!         // pad top and left edges if CLAMP_TO_ZERO needs to be simulated.
!         hPacker = new RectanglePacker(backingStore, pad, pad, WIDTH-pad, HEIGHT-pad, false);
!         vPacker = new RectanglePacker(backingStore, WIDTH, pad, WIDTH, HEIGHT-pad, true);
      }
  
      /**
       * Check if the image size is to big to be stored in the cache
       *