IncorrectUnmanagedImageSourceOffset.java revision 14851:980da45565c8 
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23
24import java.awt.AlphaComposite;
25import java.awt.Color;
26import java.awt.Graphics2D;
27import java.awt.GraphicsConfiguration;
28import java.awt.GraphicsEnvironment;
29import java.awt.Image;
30import java.awt.image.BufferedImage;
31import java.awt.image.DataBuffer;
32import java.awt.image.DataBufferByte;
33import java.awt.image.DataBufferInt;
34import java.awt.image.DataBufferShort;
35import java.awt.image.VolatileImage;
36import java.io.File;
37import java.io.IOException;
38
39import javax.imageio.ImageIO;
40
41import static java.awt.Transparency.*;
42import static java.awt.image.BufferedImage.*;
43
44/**
45 * @test
46 * @key headful
47 * @bug 8029253
48 * @summary Tests asymmetric source offsets when unmanaged image is drawn to VI.
49 *          Results of the blit to compatibleImage are used for comparison.
50 * @author Sergey Bylokhov
51 */
52public final class IncorrectUnmanagedImageSourceOffset {
53
54    private static final int[] TYPES = {TYPE_INT_RGB, TYPE_INT_ARGB,
55                                        TYPE_INT_ARGB_PRE, TYPE_INT_BGR,
56                                        TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR,
57                                        TYPE_4BYTE_ABGR_PRE,
58                                        /*TYPE_USHORT_565_RGB,
59                                        TYPE_USHORT_555_RGB, TYPE_BYTE_GRAY,
60                                        TYPE_USHORT_GRAY,*/ TYPE_BYTE_BINARY,
61                                        TYPE_BYTE_INDEXED};
62    private static final int[] TRANSPARENCIES = {OPAQUE, BITMASK, TRANSLUCENT};
63
64    public static void main(final String[] args) throws IOException {
65        for (final int viType : TRANSPARENCIES) {
66            for (final int biType : TYPES) {
67                BufferedImage bi = makeUnmanagedBI(biType);
68                fill(bi);
69                test(bi, viType);
70            }
71        }
72    }
73
74    private static void test(BufferedImage bi, int type)
75            throws IOException {
76        GraphicsEnvironment ge = GraphicsEnvironment
77                .getLocalGraphicsEnvironment();
78        GraphicsConfiguration gc = ge.getDefaultScreenDevice()
79                                     .getDefaultConfiguration();
80        VolatileImage vi = gc.createCompatibleVolatileImage(511, 255, type);
81        BufferedImage gold = gc.createCompatibleImage(511, 255, type);
82        // draw to compatible Image
83        Graphics2D big = gold.createGraphics();
84        // force scaled blit
85        big.drawImage(bi, 7, 11, 127, 111, 7, 11, 127 * 2, 111, null);
86        big.dispose();
87        // draw to volatile image
88        BufferedImage snapshot;
89        while (true) {
90            vi.validate(gc);
91            if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
92                try {
93                    Thread.sleep(100);
94                } catch (final InterruptedException ignored) {
95                }
96                continue;
97            }
98            Graphics2D vig = vi.createGraphics();
99            // force scaled blit
100            vig.drawImage(bi, 7, 11, 127, 111, 7, 11, 127 * 2, 111, null);
101            vig.dispose();
102            snapshot = vi.getSnapshot();
103            if (vi.contentsLost()) {
104                try {
105                    Thread.sleep(100);
106                } catch (final InterruptedException ignored) {
107                }
108                continue;
109            }
110            break;
111        }
112        // validate images
113        for (int x = 7; x < 127; ++x) {
114            for (int y = 11; y < 111; ++y) {
115                if (gold.getRGB(x, y) != snapshot.getRGB(x, y)) {
116                    ImageIO.write(gold, "png", new File("gold.png"));
117                    ImageIO.write(snapshot, "png", new File("bi.png"));
118                    throw new RuntimeException("Test failed.");
119                }
120            }
121        }
122    }
123
124    private static BufferedImage makeUnmanagedBI(final int type) {
125        final BufferedImage bi = new BufferedImage(511, 255, type);
126        final DataBuffer db = bi.getRaster().getDataBuffer();
127        if (db instanceof DataBufferInt) {
128            ((DataBufferInt) db).getData();
129        } else if (db instanceof DataBufferShort) {
130            ((DataBufferShort) db).getData();
131        } else if (db instanceof DataBufferByte) {
132            ((DataBufferByte) db).getData();
133        } else {
134            try {
135                bi.setAccelerationPriority(0.0f);
136            } catch (final Throwable ignored) {
137            }
138        }
139        return bi;
140    }
141
142    private static void fill(final Image image) {
143        final Graphics2D graphics = (Graphics2D) image.getGraphics();
144        graphics.setComposite(AlphaComposite.Src);
145        for (int i = 0; i < image.getHeight(null); ++i) {
146            graphics.setColor(new Color(i, 0, 0));
147            graphics.fillRect(0, i, image.getWidth(null), 1);
148        }
149        graphics.dispose();
150    }
151}
152