J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. 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. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 6521533 6525997 |
| 27 | * @summary Verifies that the OGL-accelerated codepaths for GradientPaint, |
| 28 | * LinearGradientPaint, and RadialGradientPaint produce results that are |
| 29 | * sufficiently close to those produced by the software codepaths. |
| 30 | * @run main/othervm -Dsun.java2d.opengl=True GradientPaints |
| 31 | * @author campbelc |
| 32 | */ |
| 33 | |
| 34 | import java.awt.*; |
| 35 | import java.awt.MultipleGradientPaint.ColorSpaceType; |
| 36 | import java.awt.MultipleGradientPaint.CycleMethod; |
| 37 | import java.awt.geom.*; |
| 38 | import java.awt.image.*; |
| 39 | import java.io.File; |
| 40 | import java.util.Arrays; |
| 41 | import javax.imageio.ImageIO; |
| 42 | |
| 43 | public class GradientPaints extends Canvas { |
| 44 | |
| 45 | private static final int TESTW = 600; |
| 46 | private static final int TESTH = 500; |
| 47 | |
| 48 | /* |
| 49 | * We expect slight differences in rendering between the OpenGL and |
| 50 | * software pipelines due to algorithmic and rounding differences. |
| 51 | * The purpose of this test is just to make sure that the OGL pipeline |
| 52 | * is producing results that are "reasonably" consistent with those |
| 53 | * produced in software, so we will allow +/-TOLERANCE differences |
| 54 | * in each component. When comparing the test and reference images, |
| 55 | * we add up the number of pixels that fall outside this tolerance |
| 56 | * range and if the sum is larger than some percentage of the total |
| 57 | * number of pixels. |
| 58 | * |
| 59 | * REMIND: Note that we have separate thresholds for linear and radial |
| 60 | * gradients because the visible differences between OGL and software |
| 61 | * are more apparent in the radial cases. In the future we should try |
| 62 | * to reduce the number of mismatches between the two approaches, but |
| 63 | * for now the visible differences are slight enough to not cause worry. |
| 64 | */ |
| 65 | private static final int TOLERANCE = 5; |
| 66 | private static final int ALLOWED_MISMATCHES_LINEAR = |
| 67 | (int)(TESTW * TESTH * 0.18); |
| 68 | private static final int ALLOWED_MISMATCHES_RADIAL = |
| 69 | (int)(TESTW * TESTH * 0.45); |
| 70 | |
| 71 | private static boolean done; |
| 72 | private static boolean verbose; |
| 73 | |
| 74 | private static final Color[] COLORS = { |
| 75 | new Color(0, 0, 0), |
| 76 | new Color(128, 128, 128), |
| 77 | new Color(255, 0, 0), |
| 78 | new Color(255, 255, 0), |
| 79 | new Color(0, 255, 0), |
| 80 | new Color(0, 255, 255), |
| 81 | new Color(128, 0, 255), |
| 82 | new Color(128, 128, 128), |
| 83 | }; |
| 84 | |
| 85 | private static enum PaintType {BASIC, LINEAR, RADIAL}; |
| 86 | private static enum XformType {IDENTITY, TRANSLATE, SCALE, SHEAR, ROTATE}; |
| 87 | private static final int[] numStopsArray = {2, 4, 7}; |
| 88 | private static final Object[] hints = { |
| 89 | RenderingHints.VALUE_ANTIALIAS_OFF, |
| 90 | RenderingHints.VALUE_ANTIALIAS_ON, |
| 91 | }; |
| 92 | |
| 93 | public void paint(Graphics g) { |
| 94 | synchronized (this) { |
| 95 | if (!done) { |
| 96 | done = true; |
| 97 | notifyAll(); |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | private void testOne(BufferedImage refImg, VolatileImage testImg) { |
| 103 | Graphics2D gref = refImg.createGraphics(); |
| 104 | Graphics2D gtest = testImg.createGraphics(); |
| 105 | Paint paint = |
| 106 | makePaint(PaintType.RADIAL, CycleMethod.REPEAT, |
| 107 | ColorSpaceType.SRGB, XformType.IDENTITY, 7); |
| 108 | Object aahint = hints[0]; |
| 109 | renderTest(gref, paint, aahint); |
| 110 | renderTest(gtest, paint, aahint); |
| 111 | Toolkit.getDefaultToolkit().sync(); |
| 112 | compareImages(refImg, testImg.getSnapshot(), |
| 113 | TOLERANCE, 0, ""); |
| 114 | gref.dispose(); |
| 115 | gtest.dispose(); |
| 116 | } |
| 117 | |
| 118 | private void testAll(Graphics gscreen, |
| 119 | BufferedImage refImg, VolatileImage testImg) |
| 120 | { |
| 121 | Graphics2D gref = refImg.createGraphics(); |
| 122 | Graphics2D gtest = testImg.createGraphics(); |
| 123 | for (PaintType paintType : PaintType.values()) { |
| 124 | for (CycleMethod cycleMethod : CycleMethod.values()) { |
| 125 | for (ColorSpaceType colorSpace : ColorSpaceType.values()) { |
| 126 | for (XformType xform : XformType.values()) { |
| 127 | for (Object aahint : hints) { |
| 128 | for (int numStops : numStopsArray) { |
| 129 | Paint paint = |
| 130 | makePaint(paintType, cycleMethod, |
| 131 | colorSpace, xform, numStops); |
| 132 | String msg = |
| 133 | "type=" + paintType + |
| 134 | " cycleMethod=" + cycleMethod + |
| 135 | " colorSpace=" + colorSpace + |
| 136 | " xformType=" + xform + |
| 137 | " numStops=" + numStops + |
| 138 | " aa=" + aahint; |
| 139 | renderTest(gref, paint, aahint); |
| 140 | renderTest(gtest, paint, aahint); |
| 141 | gscreen.drawImage(testImg, 0, 0, null); |
| 142 | Toolkit.getDefaultToolkit().sync(); |
| 143 | int allowedMismatches = |
| 144 | paintType == PaintType.RADIAL ? |
| 145 | ALLOWED_MISMATCHES_RADIAL : |
| 146 | ALLOWED_MISMATCHES_LINEAR; |
| 147 | compareImages(refImg, testImg.getSnapshot(), |
| 148 | TOLERANCE, allowedMismatches, |
| 149 | msg); |
| 150 | } |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | gref.dispose(); |
| 157 | gtest.dispose(); |
| 158 | } |
| 159 | |
| 160 | private Paint makePaint(PaintType paintType, |
| 161 | CycleMethod cycleMethod, |
| 162 | ColorSpaceType colorSpace, |
| 163 | XformType xformType, int numStops) |
| 164 | { |
| 165 | int startX = TESTW/6; |
| 166 | int startY = TESTH/6; |
| 167 | int endX = TESTW/2; |
| 168 | int endY = TESTH/2; |
| 169 | int ctrX = TESTW/2; |
| 170 | int ctrY = TESTH/2; |
| 171 | int focusX = ctrX + 20; |
| 172 | int focusY = ctrY + 20; |
| 173 | float radius = 100.0f; |
| 174 | Paint paint; |
| 175 | AffineTransform transform; |
| 176 | |
| 177 | Color[] colors = Arrays.copyOf(COLORS, numStops); |
| 178 | float[] fractions = new float[colors.length]; |
| 179 | for (int i = 0; i < fractions.length; i++) { |
| 180 | fractions[i] = ((float)i) / (fractions.length-1); |
| 181 | } |
| 182 | |
| 183 | switch (xformType) { |
| 184 | default: |
| 185 | case IDENTITY: |
| 186 | transform = new AffineTransform(); |
| 187 | break; |
| 188 | case TRANSLATE: |
| 189 | transform = AffineTransform.getTranslateInstance(2, 2); |
| 190 | break; |
| 191 | case SCALE: |
| 192 | transform = AffineTransform.getScaleInstance(1.2, 1.4); |
| 193 | break; |
| 194 | case SHEAR: |
| 195 | transform = AffineTransform.getShearInstance(0.1, 0.1); |
| 196 | break; |
| 197 | case ROTATE: |
| 198 | transform = AffineTransform.getRotateInstance(Math.PI / 4, |
| 199 | getWidth()/2, |
| 200 | getHeight()/2); |
| 201 | break; |
| 202 | } |
| 203 | |
| 204 | switch (paintType) { |
| 205 | case BASIC: |
| 206 | boolean cyclic = (cycleMethod != CycleMethod.NO_CYCLE); |
| 207 | paint = |
| 208 | new GradientPaint(startX, startY, Color.RED, |
| 209 | endX, endY, Color.BLUE, cyclic); |
| 210 | break; |
| 211 | |
| 212 | default: |
| 213 | case LINEAR: |
| 214 | paint = |
| 215 | new LinearGradientPaint(new Point2D.Float(startX, startY), |
| 216 | new Point2D.Float(endX, endY), |
| 217 | fractions, colors, |
| 218 | cycleMethod, colorSpace, |
| 219 | transform); |
| 220 | break; |
| 221 | |
| 222 | case RADIAL: |
| 223 | paint = |
| 224 | new RadialGradientPaint(new Point2D.Float(ctrX, ctrY), |
| 225 | radius, |
| 226 | new Point2D.Float(focusX, focusY), |
| 227 | fractions, colors, |
| 228 | cycleMethod, colorSpace, |
| 229 | transform); |
| 230 | break; |
| 231 | } |
| 232 | |
| 233 | return paint; |
| 234 | } |
| 235 | |
| 236 | private void renderTest(Graphics2D g2d, Paint p, Object aahint) { |
| 237 | g2d.setColor(Color.white); |
| 238 | g2d.fillRect(0, 0, TESTW, TESTH); |
| 239 | g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, aahint); |
| 240 | g2d.setPaint(p); |
| 241 | g2d.fillOval(0, 0, TESTW, TESTH); |
| 242 | } |
| 243 | |
| 244 | public Dimension getPreferredSize() { |
| 245 | return new Dimension(TESTW, TESTH); |
| 246 | } |
| 247 | |
| 248 | private static void compareImages(BufferedImage refImg, |
| 249 | BufferedImage testImg, |
| 250 | int tolerance, int allowedMismatches, |
| 251 | String msg) |
| 252 | { |
| 253 | int numMismatches = 0; |
| 254 | int x1 = 0; |
| 255 | int y1 = 0; |
| 256 | int x2 = refImg.getWidth(); |
| 257 | int y2 = refImg.getHeight(); |
| 258 | |
| 259 | for (int y = y1; y < y2; y++) { |
| 260 | for (int x = x1; x < x2; x++) { |
| 261 | Color expected = new Color(refImg.getRGB(x, y)); |
| 262 | Color actual = new Color(testImg.getRGB(x, y)); |
| 263 | if (!isSameColor(expected, actual, tolerance)) { |
| 264 | numMismatches++; |
| 265 | } |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | if (verbose) { |
| 270 | System.out.println(msg); |
| 271 | } |
| 272 | if (numMismatches > allowedMismatches) { |
| 273 | try { |
| 274 | ImageIO.write(refImg, "png", |
| 275 | new File("GradientPaints.ref.png")); |
| 276 | ImageIO.write(testImg, "png", |
| 277 | new File("GradientPaints.cap.png")); |
| 278 | } catch (Exception e) { |
| 279 | } |
| 280 | if (!verbose) { |
| 281 | System.err.println(msg); |
| 282 | } |
| 283 | throw new RuntimeException("Test failed: Number of mismatches (" + |
| 284 | numMismatches + |
| 285 | ") exceeds limit (" + |
| 286 | allowedMismatches + |
| 287 | ") with tolerance=" + |
| 288 | tolerance); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | private static boolean isSameColor(Color c1, Color c2, int e) { |
| 293 | int r1 = c1.getRed(); |
| 294 | int g1 = c1.getGreen(); |
| 295 | int b1 = c1.getBlue(); |
| 296 | int r2 = c2.getRed(); |
| 297 | int g2 = c2.getGreen(); |
| 298 | int b2 = c2.getBlue(); |
| 299 | int rmin = Math.max(r2-e, 0); |
| 300 | int gmin = Math.max(g2-e, 0); |
| 301 | int bmin = Math.max(b2-e, 0); |
| 302 | int rmax = Math.min(r2+e, 255); |
| 303 | int gmax = Math.min(g2+e, 255); |
| 304 | int bmax = Math.min(b2+e, 255); |
| 305 | if (r1 >= rmin && r1 <= rmax && |
| 306 | g1 >= gmin && g1 <= gmax && |
| 307 | b1 >= bmin && b1 <= bmax) |
| 308 | { |
| 309 | return true; |
| 310 | } |
| 311 | return false; |
| 312 | } |
| 313 | |
| 314 | public static void main(String[] args) { |
| 315 | if (args.length == 1 && args[0].equals("-verbose")) { |
| 316 | verbose = true; |
| 317 | } |
| 318 | |
| 319 | GradientPaints test = new GradientPaints(); |
| 320 | Frame frame = new Frame(); |
| 321 | frame.add(test); |
| 322 | frame.pack(); |
| 323 | frame.setVisible(true); |
| 324 | |
| 325 | // Wait until the component's been painted |
| 326 | synchronized (test) { |
| 327 | while (!done) { |
| 328 | try { |
| 329 | test.wait(); |
| 330 | } catch (InterruptedException e) { |
| 331 | throw new RuntimeException("Failed: Interrupted"); |
| 332 | } |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | GraphicsConfiguration gc = frame.getGraphicsConfiguration(); |
| 337 | if (gc.getColorModel() instanceof IndexColorModel) { |
| 338 | System.out.println("IndexColorModel detected: " + |
| 339 | "test considered PASSED"); |
| 340 | frame.dispose(); |
| 341 | return; |
| 342 | } |
| 343 | |
| 344 | BufferedImage refImg = |
| 345 | new BufferedImage(TESTW, TESTH, BufferedImage.TYPE_INT_RGB); |
| 346 | VolatileImage testImg = frame.createVolatileImage(TESTW, TESTH); |
| 347 | testImg.validate(gc); |
| 348 | |
| 349 | try { |
| 350 | test.testAll(test.getGraphics(), refImg, testImg); |
| 351 | } finally { |
| 352 | frame.dispose(); |
| 353 | } |
| 354 | } |
| 355 | } |