1 /*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.java2d.marlin;
27
28 import java.awt.geom.Path2D;
29 import java.lang.ref.WeakReference;
30 import java.util.concurrent.atomic.AtomicInteger;
31 import sun.java2d.ReentrantContext;
32 import sun.java2d.marlin.ArrayCacheConst.CacheStats;
33 import sun.java2d.marlin.MarlinRenderingEngine.NormalizingPathIterator;
34
35 /**
36 * This class is a renderer context dedicated to a single thread
37 */
38 final class RendererContext extends ReentrantContext implements IRendererContext {
39
40 // RendererContext creation counter
41 private static final AtomicInteger CTX_COUNT = new AtomicInteger(1);
42
43 /**
44 * Create a new renderer context
45 *
46 * @return new RendererContext instance
47 */
48 static RendererContext createContext() {
49 return new RendererContext("ctx"
50 + Integer.toString(CTX_COUNT.getAndIncrement()));
51 }
52
53 // Smallest object used as Cleaner's parent reference
54 private final Object cleanerObj;
55 // dirty flag indicating an exception occured during pipeline in pathTo()
56 boolean dirty = false;
57 // shared data
58 final float[] float6 = new float[6];
59 // shared curve (dirty) (Renderer / Stroker)
60 final Curve curve = new Curve();
61 // MarlinRenderingEngine NormalizingPathIterator NearestPixelCenter:
62 final NormalizingPathIterator nPCPathIterator;
63 // MarlinRenderingEngine NearestPixelQuarter NormalizingPathIterator:
64 final NormalizingPathIterator nPQPathIterator;
65 // MarlinRenderingEngine.TransformingPathConsumer2D
66 final TransformingPathConsumer2D transformerPC2D;
67 // recycled Path2D instance (weak)
68 private WeakReference<Path2D.Float> refPath2D = null;
69 final Renderer renderer;
70 final Stroker stroker;
71 // Simplifies out collinear lines
72 final CollinearSimplifier simplifier = new CollinearSimplifier();
73 final Dasher dasher;
74 final MarlinTileGenerator ptg;
75 final MarlinCache cache;
76 // flag indicating the shape is stroked (1) or filled (0)
77 int stroking = 0;
78 // flag indicating to clip the shape
79 boolean doClip = false;
80 // flag indicating if the path is closed or not (in advance) to handle properly caps
81 boolean closedPath = false;
82 // clip rectangle (ymin, ymax, xmin, xmax):
83 final float[] clipRect = new float[4];
84
85 // Array caches:
86 /* clean int[] cache (zero-filled) = 5 refs */
87 private final IntArrayCache cleanIntCache = new IntArrayCache(true, 5);
88 /* dirty int[] cache = 5 refs */
89 private final IntArrayCache dirtyIntCache = new IntArrayCache(false, 5);
90 /* dirty float[] cache = 4 refs (2 polystack) */
91 private final FloatArrayCache dirtyFloatCache = new FloatArrayCache(false, 4);
92 /* dirty byte[] cache = 2 ref (2 polystack) */
93 private final ByteArrayCache dirtyByteCache = new ByteArrayCache(false, 2);
94
95 // RendererContext statistics
96 final RendererStats stats;
97
98 /**
99 * Constructor
100 *
101 * @param name context name (debugging)
102 */
103 RendererContext(final String name) {
104 if (LOG_CREATE_CONTEXT) {
105 MarlinUtils.logInfo("new RendererContext = " + name);
106 }
107 this.cleanerObj = new Object();
108
109 // create first stats (needed by newOffHeapArray):
110 if (DO_STATS || DO_MONITORS) {
111 stats = RendererStats.createInstance(cleanerObj, name);
112 // push cache stats:
113 stats.cacheStats = new CacheStats[] { cleanIntCache.stats,
114 dirtyIntCache.stats, dirtyFloatCache.stats, dirtyByteCache.stats
115 };
116 } else {
117 stats = null;
118 }
119
120 // NormalizingPathIterator instances:
121 nPCPathIterator = new NormalizingPathIterator.NearestPixelCenter(float6);
122 nPQPathIterator = new NormalizingPathIterator.NearestPixelQuarter(float6);
123
124 // MarlinRenderingEngine.TransformingPathConsumer2D
125 transformerPC2D = new TransformingPathConsumer2D(this);
126
127 // Renderer:
128 cache = new MarlinCache(this);
129 renderer = new Renderer(this); // needs MarlinCache from rdrCtx.cache
130 ptg = new MarlinTileGenerator(stats, renderer, cache);
131
132 stroker = new Stroker(this);
133 dasher = new Dasher(this);
134 }
135
136 /**
137 * Disposes this renderer context:
138 * clean up before reusing this context
139 */
140 void dispose() {
141 if (DO_STATS) {
142 if (stats.totalOffHeap > stats.totalOffHeapMax) {
143 stats.totalOffHeapMax = stats.totalOffHeap;
144 }
145 stats.totalOffHeap = 0L;
146 }
147 stroking = 0;
148 doClip = false;
149 closedPath = false;
150
151 // if context is maked as DIRTY:
152 if (dirty) {
153 // may happen if an exception if thrown in the pipeline processing:
154 // force cleanup of all possible pipelined blocks (except Renderer):
155
156 // NormalizingPathIterator instances:
157 this.nPCPathIterator.dispose();
158 this.nPQPathIterator.dispose();
159 // Dasher:
160 this.dasher.dispose();
161 // Stroker:
162 this.stroker.dispose();
163
164 // mark context as CLEAN:
165 dirty = false;
166 }
167 }
168
169 Path2D.Float getPath2D() {
170 // resolve reference:
171 Path2D.Float p2d = (refPath2D != null) ? refPath2D.get() : null;
172
173 // create a new Path2D ?
174 if (p2d == null) {
175 p2d = new Path2D.Float(WIND_NON_ZERO, INITIAL_EDGES_COUNT); // 32K
176
177 // update weak reference:
178 refPath2D = new WeakReference<Path2D.Float>(p2d);
179 }
180 // reset the path anyway:
181 p2d.reset();
182 return p2d;
183 }
184
185 @Override
186 public RendererStats stats() {
187 return stats;
188 }
189
190 @Override
191 public OffHeapArray newOffHeapArray(final long initialSize) {
192 if (DO_STATS) {
193 stats.totalOffHeapInitial += initialSize;
194 }
195 return new OffHeapArray(cleanerObj, initialSize);
196 }
197
198 @Override
199 public IntArrayCache.Reference newCleanIntArrayRef(final int initialSize) {
200 return cleanIntCache.createRef(initialSize);
201 }
202
203 IntArrayCache.Reference newDirtyIntArrayRef(final int initialSize) {
204 return dirtyIntCache.createRef(initialSize);
205 }
206
207 FloatArrayCache.Reference newDirtyFloatArrayRef(final int initialSize) {
208 return dirtyFloatCache.createRef(initialSize);
209 }
210
211 ByteArrayCache.Reference newDirtyByteArrayRef(final int initialSize) {
212 return dirtyByteCache.createRef(initialSize);
213 }
214 }