dstData.markDirty();    }     /**     * This is an alternate implementation for updating the cached     * SurfaceData from the source (primary) SurfaceData using a     * background color for transparent pixels.     * A simple BlitBg is used to copy the pixels from the source to     * the destination SurfaceData with the specified bgColor.     * A subclass can override the normal updateSurfaceData method     * and call this implementation instead if it wants to use color     * keying for bitmask images.     */    public void updateSurfaceDataBg(SurfaceData srcData,                                    SurfaceData dstData,                                    int w, int h, Color bgColor)    {        SurfaceType srcType = srcData.getSurfaceType();        SurfaceType dstType = dstData.getSurfaceType();        BlitBg blitbg = BlitBg.getFromCache(srcType,                                            CompositeType.SrcNoEa,                                            dstType);        blitbg.BlitBg(srcData, dstData,                      AlphaComposite.Src, null, bgColor.getRGB(),                      0, 0, 0, 0, w, h);        dstData.markDirty();    }}

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