src/java.desktop/share/classes/sun/java2d/marlin/DRendererContext.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package sun.java2d.marlin;

 import java.awt.geom.Path2D;
 import java.lang.ref.WeakReference;
 import java.util.concurrent.atomic.AtomicInteger;
 import sun.java2d.ReentrantContext;
 import sun.java2d.marlin.ArrayCacheConst.CacheStats;
 import sun.java2d.marlin.DMarlinRenderingEngine.NormalizingPathIterator;
 import sun.java2d.marlin.DTransformingPathConsumer2D.CurveBasicMonotonizer;
 import sun.java2d.marlin.DTransformingPathConsumer2D.CurveClipSplitter;

 /**
  * This class is a renderer context dedicated to a single thread
  */
 final class DRendererContext extends ReentrantContext implements IRendererContext {

     // RendererContext creation counter
     private static final AtomicInteger CTX_COUNT = new AtomicInteger(1);

     /**
      * Create a new renderer context
      *
      * @return new RendererContext instance
      */
     static DRendererContext createContext() {
         return new DRendererContext("ctx"
                        + Integer.toString(CTX_COUNT.getAndIncrement()));
     }

     // Smallest object used as Cleaner's parent reference
     private final Object cleanerObj;
     // dirty flag indicating an exception occured during pipeline in pathTo()
     boolean dirty = false;
     // shared data
     final double[] double6 = new double[6];
     // shared curve (dirty) (Renderer / Stroker)
     final DCurve curve = new DCurve();
     // MarlinRenderingEngine NormalizingPathIterator NearestPixelCenter:
     final NormalizingPathIterator nPCPathIterator;
     // MarlinRenderingEngine NearestPixelQuarter NormalizingPathIterator:
     final NormalizingPathIterator nPQPathIterator;
     // MarlinRenderingEngine.TransformingPathConsumer2D
     final DTransformingPathConsumer2D transformerPC2D;
     // recycled Path2D instance (weak)
     private WeakReference<Path2D.Double> refPath2D = null;
     final DRenderer renderer;
     final DStroker stroker;
     // Simplifies out collinear lines
     final DCollinearSimplifier simplifier = new DCollinearSimplifier();
     // Simplifies path
     final DPathSimplifier pathSimplifier = new DPathSimplifier();
     final DDasher dasher;
     final MarlinTileGenerator ptg;
     final MarlinCache cache;
     // flag indicating the shape is stroked (1) or filled (0)
     int stroking = 0;
     // flag indicating to clip the shape
     boolean doClip = false;
     // flag indicating if the path is closed or not (in advance) to handle properly caps
     boolean closedPath = false;
     // clip rectangle (ymin, ymax, xmin, xmax):
     final double[] clipRect = new double[4];
     // clip inverse scale (mean) to adjust length checks
     double clipInvScale = 0.0d;
     // CurveBasicMonotonizer instance
     final CurveBasicMonotonizer monotonizer;
     // CurveClipSplitter instance
     final CurveClipSplitter curveClipSplitter;

     // Array caches:
     /* clean int[] cache (zero-filled) = 5 refs */
     private final IntArrayCache cleanIntCache = new IntArrayCache(true, 5);
     /* dirty int[] cache = 5 refs */
     private final IntArrayCache dirtyIntCache = new IntArrayCache(false, 5);
     /* dirty double[] cache = 4 refs (2 polystack) */
     private final DoubleArrayCache dirtyDoubleCache = new DoubleArrayCache(false, 4);
     /* dirty byte[] cache = 2 ref (2 polystack) */
     private final ByteArrayCache dirtyByteCache = new ByteArrayCache(false, 2);

     // RendererContext statistics
     final RendererStats stats;

     final PathConsumer2DAdapter p2dAdapter = new PathConsumer2DAdapter();

     /**
      * Constructor
      *
      * @param name context name (debugging)
      */
     DRendererContext(final String name) {
         if (LOG_CREATE_CONTEXT) {
             MarlinUtils.logInfo("new RendererContext = " + name);
         }
         this.cleanerObj = new Object();

         // create first stats (needed by newOffHeapArray):
         if (DO_STATS || DO_MONITORS) {
             stats = RendererStats.createInstance(cleanerObj, name);
             // push cache stats:
             stats.cacheStats = new CacheStats[] { cleanIntCache.stats,
                 dirtyIntCache.stats, dirtyDoubleCache.stats, dirtyByteCache.stats
             };
         } else {
             stats = null;
         }

         // NormalizingPathIterator instances:
         nPCPathIterator = new NormalizingPathIterator.NearestPixelCenter(double6);
         nPQPathIterator  = new NormalizingPathIterator.NearestPixelQuarter(double6);

         // curve monotonizer & clip subdivider (before transformerPC2D init)
         monotonizer = new CurveBasicMonotonizer(this);
         curveClipSplitter = new CurveClipSplitter(this);

         // MarlinRenderingEngine.TransformingPathConsumer2D
         transformerPC2D = new DTransformingPathConsumer2D(this);

         // Renderer:
         cache = new MarlinCache(this);
         renderer = new DRenderer(this); // needs MarlinCache from rdrCtx.cache
         ptg = new MarlinTileGenerator(stats, renderer, cache);

         stroker = new DStroker(this);
         dasher = new DDasher(this);
     }

     /**
      * Disposes this renderer context:
      * clean up before reusing this context
      */
     void dispose() {
         if (DO_STATS) {
             if (stats.totalOffHeap > stats.totalOffHeapMax) {
                 stats.totalOffHeapMax = stats.totalOffHeap;
             }
             stats.totalOffHeap = 0L;
         }
         stroking   = 0;
         doClip     = false;
         closedPath = false;
         clipInvScale = 0.0d;

         // if context is maked as DIRTY:
         if (dirty) {
             // may happen if an exception if thrown in the pipeline processing:
             // force cleanup of all possible pipelined blocks (except Renderer):

             // NormalizingPathIterator instances:
             this.nPCPathIterator.dispose();
             this.nPQPathIterator.dispose();
             // Dasher:
             this.dasher.dispose();
             // Stroker:
             this.stroker.dispose();

             // mark context as CLEAN:
             dirty = false;
         }
     }

     Path2D.Double getPath2D() {
         // resolve reference:
         Path2D.Double p2d = (refPath2D != null) ? refPath2D.get() : null;

         // create a new Path2D ?
         if (p2d == null) {
             p2d = new Path2D.Double(WIND_NON_ZERO, INITIAL_EDGES_COUNT); // 32K

             // update weak reference:
             refPath2D = new WeakReference<Path2D.Double>(p2d);
         }
         // reset the path anyway:
         p2d.reset();
         return p2d;
     }

     @Override
     public RendererStats stats() {
         return stats;
     }

     @Override
     public OffHeapArray newOffHeapArray(final long initialSize) {
         if (DO_STATS) {
             stats.totalOffHeapInitial += initialSize;
         }
         return new OffHeapArray(cleanerObj, initialSize);
     }

     @Override
     public IntArrayCache.Reference newCleanIntArrayRef(final int initialSize) {
         return cleanIntCache.createRef(initialSize);
     }

     IntArrayCache.Reference newDirtyIntArrayRef(final int initialSize) {
         return dirtyIntCache.createRef(initialSize);
     }

     DoubleArrayCache.Reference newDirtyDoubleArrayRef(final int initialSize) {
         return dirtyDoubleCache.createRef(initialSize);
     }

     ByteArrayCache.Reference newDirtyByteArrayRef(final int initialSize) {
         return dirtyByteCache.createRef(initialSize);
     }

     static final class PathConsumer2DAdapter implements DPathConsumer2D {
         private sun.awt.geom.PathConsumer2D out;

         PathConsumer2DAdapter() {}

         PathConsumer2DAdapter init(sun.awt.geom.PathConsumer2D out) {
             this.out = out;
             return this;
         }

         @Override
         public void moveTo(double x0, double y0) {
             out.moveTo((float)x0, (float)y0);
         }

         @Override
         public void lineTo(double x1, double y1) {
             out.lineTo((float)x1, (float)y1);
         }

         @Override
         public void closePath() {
             out.closePath();
         }

         @Override
         public void pathDone() {
             out.pathDone();
         }

         @Override
         public void curveTo(double x1, double y1,
                             double x2, double y2,
                             double x3, double y3)
         {
             out.curveTo((float)x1, (float)y1,
                     (float)x2, (float)y2,
                     (float)x3, (float)y3);
         }

         @Override
         public void quadTo(double x1, double y1, double x2, double y2) {
             out.quadTo((float)x1, (float)y1, (float)x2, (float)y2);
         }

         @Override
         public long getNativeConsumer() {
             throw new InternalError("Not using a native peer");
         }
     }
 }
	/*
	* Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.java2d.marlin;

	import java.awt.geom.Path2D;
	import java.lang.ref.WeakReference;
	import java.util.concurrent.atomic.AtomicInteger;
	import sun.java2d.ReentrantContext;
	import sun.java2d.marlin.ArrayCacheConst.CacheStats;
	import sun.java2d.marlin.DMarlinRenderingEngine.NormalizingPathIterator;
	import sun.java2d.marlin.DTransformingPathConsumer2D.CurveBasicMonotonizer;
	import sun.java2d.marlin.DTransformingPathConsumer2D.CurveClipSplitter;

	/**
	* This class is a renderer context dedicated to a single thread
	*/
	final class DRendererContext extends ReentrantContext implements IRendererContext {

	// RendererContext creation counter
	private static final AtomicInteger CTX_COUNT = new AtomicInteger(1);

	/**
	* Create a new renderer context
	*
	* @return new RendererContext instance
	*/
	static DRendererContext createContext() {
	return new DRendererContext("ctx"
	+ Integer.toString(CTX_COUNT.getAndIncrement()));
	}

	// Smallest object used as Cleaner's parent reference
	private final Object cleanerObj;
	// dirty flag indicating an exception occured during pipeline in pathTo()
	boolean dirty = false;
	// shared data
	final double[] double6 = new double[6];
	// shared curve (dirty) (Renderer / Stroker)
	final DCurve curve = new DCurve();
	// MarlinRenderingEngine NormalizingPathIterator NearestPixelCenter:
	final NormalizingPathIterator nPCPathIterator;
	// MarlinRenderingEngine NearestPixelQuarter NormalizingPathIterator:
	final NormalizingPathIterator nPQPathIterator;
	// MarlinRenderingEngine.TransformingPathConsumer2D
	final DTransformingPathConsumer2D transformerPC2D;
	// recycled Path2D instance (weak)
	private WeakReference<Path2D.Double> refPath2D = null;
	final DRenderer renderer;
	final DStroker stroker;
	// Simplifies out collinear lines
	final DCollinearSimplifier simplifier = new DCollinearSimplifier();
	// Simplifies path
	final DPathSimplifier pathSimplifier = new DPathSimplifier();
	final DDasher dasher;
	final MarlinTileGenerator ptg;
	final MarlinCache cache;
	// flag indicating the shape is stroked (1) or filled (0)
	int stroking = 0;
	// flag indicating to clip the shape
	boolean doClip = false;
	// flag indicating if the path is closed or not (in advance) to handle properly caps
	boolean closedPath = false;
	// clip rectangle (ymin, ymax, xmin, xmax):
	final double[] clipRect = new double[4];
	// clip inverse scale (mean) to adjust length checks
	double clipInvScale = 0.0d;
	// CurveBasicMonotonizer instance
	final CurveBasicMonotonizer monotonizer;
	// CurveClipSplitter instance
	final CurveClipSplitter curveClipSplitter;

	// Array caches:
	/* clean int[] cache (zero-filled) = 5 refs */
	private final IntArrayCache cleanIntCache = new IntArrayCache(true, 5);
	/* dirty int[] cache = 5 refs */
	private final IntArrayCache dirtyIntCache = new IntArrayCache(false, 5);
	/* dirty double[] cache = 4 refs (2 polystack) */
	private final DoubleArrayCache dirtyDoubleCache = new DoubleArrayCache(false, 4);
	/* dirty byte[] cache = 2 ref (2 polystack) */
	private final ByteArrayCache dirtyByteCache = new ByteArrayCache(false, 2);

	// RendererContext statistics
	final RendererStats stats;

	final PathConsumer2DAdapter p2dAdapter = new PathConsumer2DAdapter();

	/**
	* Constructor
	*
	* @param name context name (debugging)
	*/
	DRendererContext(final String name) {
	if (LOG_CREATE_CONTEXT) {
	MarlinUtils.logInfo("new RendererContext = " + name);
	}
	this.cleanerObj = new Object();

	// create first stats (needed by newOffHeapArray):
	if (DO_STATS \|\| DO_MONITORS) {
	stats = RendererStats.createInstance(cleanerObj, name);
	// push cache stats:
	stats.cacheStats = new CacheStats[] { cleanIntCache.stats,
	dirtyIntCache.stats, dirtyDoubleCache.stats, dirtyByteCache.stats
	};
	} else {
	stats = null;
	}

	// NormalizingPathIterator instances:
	nPCPathIterator = new NormalizingPathIterator.NearestPixelCenter(double6);
	nPQPathIterator = new NormalizingPathIterator.NearestPixelQuarter(double6);

	// curve monotonizer & clip subdivider (before transformerPC2D init)
	monotonizer = new CurveBasicMonotonizer(this);
	curveClipSplitter = new CurveClipSplitter(this);

	// MarlinRenderingEngine.TransformingPathConsumer2D
	transformerPC2D = new DTransformingPathConsumer2D(this);

	// Renderer:
	cache = new MarlinCache(this);
	renderer = new DRenderer(this); // needs MarlinCache from rdrCtx.cache
	ptg = new MarlinTileGenerator(stats, renderer, cache);

	stroker = new DStroker(this);
	dasher = new DDasher(this);
	}

	/**
	* Disposes this renderer context:
	* clean up before reusing this context
	*/
	void dispose() {
	if (DO_STATS) {
	if (stats.totalOffHeap > stats.totalOffHeapMax) {
	stats.totalOffHeapMax = stats.totalOffHeap;
	}
	stats.totalOffHeap = 0L;
	}
	stroking = 0;
	doClip = false;
	closedPath = false;
	clipInvScale = 0.0d;

	// if context is maked as DIRTY:
	if (dirty) {
	// may happen if an exception if thrown in the pipeline processing:
	// force cleanup of all possible pipelined blocks (except Renderer):

	// NormalizingPathIterator instances:
	this.nPCPathIterator.dispose();
	this.nPQPathIterator.dispose();
	// Dasher:
	this.dasher.dispose();
	// Stroker:
	this.stroker.dispose();

	// mark context as CLEAN:
	dirty = false;
	}
	}

	Path2D.Double getPath2D() {
	// resolve reference:
	Path2D.Double p2d = (refPath2D != null) ? refPath2D.get() : null;

	// create a new Path2D ?
	if (p2d == null) {
	p2d = new Path2D.Double(WIND_NON_ZERO, INITIAL_EDGES_COUNT); // 32K

	// update weak reference:
	refPath2D = new WeakReference<Path2D.Double>(p2d);
	}
	// reset the path anyway:
	p2d.reset();
	return p2d;
	}

	@Override
	public RendererStats stats() {
	return stats;
	}

	@Override
	public OffHeapArray newOffHeapArray(final long initialSize) {
	if (DO_STATS) {
	stats.totalOffHeapInitial += initialSize;
	}
	return new OffHeapArray(cleanerObj, initialSize);
	}

	@Override
	public IntArrayCache.Reference newCleanIntArrayRef(final int initialSize) {
	return cleanIntCache.createRef(initialSize);
	}

	IntArrayCache.Reference newDirtyIntArrayRef(final int initialSize) {
	return dirtyIntCache.createRef(initialSize);
	}

	DoubleArrayCache.Reference newDirtyDoubleArrayRef(final int initialSize) {
	return dirtyDoubleCache.createRef(initialSize);
	}

	ByteArrayCache.Reference newDirtyByteArrayRef(final int initialSize) {
	return dirtyByteCache.createRef(initialSize);
	}

	static final class PathConsumer2DAdapter implements DPathConsumer2D {
	private sun.awt.geom.PathConsumer2D out;

	PathConsumer2DAdapter() {}

	PathConsumer2DAdapter init(sun.awt.geom.PathConsumer2D out) {
	this.out = out;
	return this;
	}

	@Override
	public void moveTo(double x0, double y0) {
	out.moveTo((float)x0, (float)y0);
	}

	@Override
	public void lineTo(double x1, double y1) {
	out.lineTo((float)x1, (float)y1);
	}

	@Override
	public void closePath() {
	out.closePath();
	}

	@Override
	public void pathDone() {
	out.pathDone();
	}

	@Override
	public void curveTo(double x1, double y1,
	double x2, double y2,
	double x3, double y3)
	{
	out.curveTo((float)x1, (float)y1,
	(float)x2, (float)y2,
	(float)x3, (float)y3);
	}

	@Override
	public void quadTo(double x1, double y1, double x2, double y2) {
	out.quadTo((float)x1, (float)y1, (float)x2, (float)y2);
	}

	@Override
	public long getNativeConsumer() {
	throw new InternalError("Not using a native peer");
	}
	}
	}