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 com.sun.marlin;
27
28 import com.sun.javafx.geom.Path2D;
29 import java.util.concurrent.atomic.AtomicInteger;
30 import com.sun.util.reentrant.ReentrantContext;
31 import com.sun.javafx.geom.Rectangle;
32 import com.sun.marlin.ArrayCacheConst.CacheStats;
33 import java.lang.ref.WeakReference;
34
35 /**
36 * This class is a renderer context dedicated to a single thread
37 */
38 public final class RendererContext extends ReentrantContext implements MarlinConst {
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 public 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 public boolean dirty = false;
57 // shared data
58 public final float[] float6 = new float[6];
59 // shared curve (dirty) (Renderer / Stroker)
60 final Curve curve = new Curve();
61 // MarlinRenderingEngine.TransformingPathConsumer2D
62 public final TransformingPathConsumer2D transformerPC2D;
63 // recycled Path2D instance (weak)
64 private WeakReference<Path2D> refPath2D = null;
65 // shared memory between renderer instances:
66 final RendererSharedMemory rdrMem;
67 public final Renderer renderer;
68 private RendererNoAA rendererNoAA = null;
69 public final Stroker stroker;
70 // Simplifies out collinear lines
71 public final CollinearSimplifier simplifier = new CollinearSimplifier();
72 public final Dasher dasher;
73 // flag indicating the shape is stroked (1) or filled (0)
74 int stroking = 0;
75 // flag indicating to clip the shape
76 public boolean doClip = false;
77 // flag indicating if the path is closed or not (in advance) to handle properly caps
78 boolean closedPath = false;
79 // clip rectangle (ymin, ymax, xmin, xmax):
80 public final float[] clipRect = new float[4];
81
82 // MarlinFX specific:
83 // dirty bbox rectangle
84 public final Rectangle clip = new Rectangle();
85 // dirty MaskMarlinAlphaConsumer
86 public MaskMarlinAlphaConsumer consumer = null;
87
88 // Array caches:
89 /* clean int[] cache (zero-filled) = 5 refs */
90 private final IntArrayCache cleanIntCache = new IntArrayCache(true, 5);
91 /* dirty int[] cache = 5 refs */
92 private final IntArrayCache dirtyIntCache = new IntArrayCache(false, 5);
93 /* dirty float[] cache = 4 refs (2 polystack) */
94 private final FloatArrayCache dirtyFloatCache = new FloatArrayCache(false, 4);
95 /* dirty byte[] cache = 2 ref (2 polystack) */
96 private final ByteArrayCache dirtyByteCache = new ByteArrayCache(false, 2);
97
98 // RendererContext statistics
99 final RendererStats stats;
100
101 /**
102 * Constructor
103 *
104 * @param name context name (debugging)
105 */
106 RendererContext(final String name) {
107 if (LOG_CREATE_CONTEXT) {
108 MarlinUtils.logInfo("new RendererContext = " + name);
109 }
110 this.cleanerObj = new Object();
111
112 // create first stats (needed by newOffHeapArray):
113 if (DO_STATS || DO_MONITORS) {
114 stats = RendererStats.createInstance(cleanerObj, name);
115 // push cache stats:
116 stats.cacheStats = new CacheStats[] { cleanIntCache.stats,
117 dirtyIntCache.stats, dirtyFloatCache.stats, dirtyByteCache.stats
118 };
119 } else {
120 stats = null;
121 }
122
123 // MarlinRenderingEngine.TransformingPathConsumer2D
124 transformerPC2D = new TransformingPathConsumer2D(this);
125
126 // Renderer shared memory:
127 rdrMem = new RendererSharedMemory(this);
128
129 // Renderer:
130 renderer = new Renderer(this);
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 public 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 // Dasher:
157 this.dasher.dispose();
158 // Stroker:
159 this.stroker.dispose();
160
161 // mark context as CLEAN:
162 dirty = false;
163 }
164 }
165
166 public Path2D getPath2D() {
167 // resolve reference:
168 Path2D p2d = (refPath2D != null) ? refPath2D.get() : null;
169
170 // create a new Path2D ?
171 if (p2d == null) {
172 p2d = new Path2D(WIND_NON_ZERO, INITIAL_EDGES_COUNT); // 32K
173
174 // update weak reference:
175 refPath2D = new WeakReference<Path2D>(p2d);
176 }
177 // reset the path anyway:
178 p2d.reset();
179 return p2d;
180 }
181
182 public RendererNoAA getRendererNoAA() {
183 if (rendererNoAA == null) {
184 rendererNoAA = new RendererNoAA(this);
185 }
186 return rendererNoAA;
187 }
188
189 OffHeapArray newOffHeapArray(final long initialSize) {
190 if (DO_STATS) {
191 stats.totalOffHeapInitial += initialSize;
192 }
193 return new OffHeapArray(cleanerObj, initialSize);
194 }
195
196 IntArrayCache.Reference newCleanIntArrayRef(final int initialSize) {
197 return cleanIntCache.createRef(initialSize);
198 }
199
200 IntArrayCache.Reference newDirtyIntArrayRef(final int initialSize) {
201 return dirtyIntCache.createRef(initialSize);
202 }
203
204 FloatArrayCache.Reference newDirtyFloatArrayRef(final int initialSize) {
205 return dirtyFloatCache.createRef(initialSize);
206 }
207
208 ByteArrayCache.Reference newDirtyByteArrayRef(final int initialSize) {
209 return dirtyByteCache.createRef(initialSize);
210 }
211
212 static final class RendererSharedMemory {
213
214 // edges [ints] stored in off-heap memory
215 final OffHeapArray edges;
216
217 // edgeBuckets ref (clean)
218 final IntArrayCache.Reference edgeBuckets_ref;
219 // edgeBucketCounts ref (clean)
220 final IntArrayCache.Reference edgeBucketCounts_ref;
221
222 // alphaLine ref (clean)
223 final IntArrayCache.Reference alphaLine_ref;
224
225 // crossings ref (dirty)
226 final IntArrayCache.Reference crossings_ref;
227 // edgePtrs ref (dirty)
228 final IntArrayCache.Reference edgePtrs_ref;
229 // merge sort initial arrays
230 // aux_crossings ref (dirty)
231 final IntArrayCache.Reference aux_crossings_ref;
232 // aux_edgePtrs ref (dirty)
233 final IntArrayCache.Reference aux_edgePtrs_ref;
234
235 // blkFlags ref (clean)
236 final IntArrayCache.Reference blkFlags_ref;
237
238 RendererSharedMemory(final RendererContext rdrCtx) {
239 edges = rdrCtx.newOffHeapArray(INITIAL_EDGES_CAPACITY); // 96K
240
241 edgeBuckets_ref = rdrCtx.newCleanIntArrayRef(INITIAL_BUCKET_ARRAY); // 64K
242 edgeBucketCounts_ref = rdrCtx.newCleanIntArrayRef(INITIAL_BUCKET_ARRAY); // 64K
243
244 // 2048 (pixelsize) pixel large
245 alphaLine_ref = rdrCtx.newCleanIntArrayRef(INITIAL_AA_ARRAY); // 8K
246
247 crossings_ref = rdrCtx.newDirtyIntArrayRef(INITIAL_CROSSING_COUNT); // 2K
248 aux_crossings_ref = rdrCtx.newDirtyIntArrayRef(INITIAL_CROSSING_COUNT); // 2K
249 edgePtrs_ref = rdrCtx.newDirtyIntArrayRef(INITIAL_CROSSING_COUNT); // 2K
250 aux_edgePtrs_ref = rdrCtx.newDirtyIntArrayRef(INITIAL_CROSSING_COUNT); // 2K
251
252 blkFlags_ref = rdrCtx.newCleanIntArrayRef(INITIAL_ARRAY); // 1K = 1 tile line
253 }
254 }
255 }