| /* | |
| * Copyright (c) 2002, 2016, 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. | |
| * | |
| * 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. | |
| */ | |
| /** | |
| * @test | |
| * @key headful | |
| * @bug 4780022 4862193 7179526 | |
| * @summary Tests that clipped lines are drawn over the same pixels | |
| * as unclipped lines (within the clip bounds) | |
| * @run main/timeout=600/othervm -Dsun.java2d.ddforcevram=true LineClipTest | |
| * @run main/timeout=600/othervm LineClipTest | |
| */ | |
| /** | |
| * This app tests whether we are drawing clipped lines the same | |
| * as unclipped lines. The problem occurred when we started | |
| * clipping d3d lines using simple integer clipping, which did not | |
| * account for sub-pixel precision and ended up drawing very different | |
| * pixels than the same line drawn unclipped. A supposed fix | |
| * to that problem used floating-point clipping instead, but there | |
| * was some problem with very limited precision inside of d3d | |
| * (presumably in hardware) that caused some variation in pixels. | |
| * We decided that whatever the fix was, we needed a serious | |
| * line check test to make sure that all kinds of different | |
| * lines would be drawn exactly the same inside the clip area, | |
| * regardless of whether clipping was enabled. This test should | |
| * check all kinds of different cases, such as lines that fall | |
| * completely outside, completely inside, start outside and | |
| * end inside, etc., and lines should end and originate in | |
| * all quadrants of the space divided up by the clip box. | |
| * | |
| * The test works as follows: | |
| * We create nine quadrants using the spaces bisected by the | |
| * edges of the clip bounds (note that only one of these | |
| * quadrants is actually visible when clipping is enabled). | |
| * We create several points in each of these quadrants | |
| * (three in each of the invisible quadrants, nine in the | |
| * center/visible quadrant). Our resulting grid looks like | |
| * this: | |
| * | |
| * x x|x x x|x x | |
| * | | | |
| * | | | |
| * | | | |
| * | | | |
| * | | | |
| * x | | x | |
| * ----------------------------------- | |
| * x |x x x| x | |
| * | | | |
| * | | | |
| * x |x x x| x | |
| * | | | |
| * | | | |
| * x |x x x| x | |
| * ----------------------------------- | |
| * x | | x | |
| * | | | |
| * | | | |
| * | | | |
| * | | | |
| * | | | |
| * x x|x x x|x x | |
| * | |
| * The test then draws lines from every point to every other | |
| * point. First, we draw unclipped lines in blue and | |
| * then we draw clipped lines in red. | |
| * At certain times (after every point during the default | |
| * test, after every quadrant of lines if you run with the -quick | |
| * option), we check for errors and draw the current image | |
| * to the screen. Error checking consists of copying the | |
| * VolatileImage to a BufferedImage (because we need access | |
| * to the pixels directly) and checking every pixel in the | |
| * image. The check is simple: everything outside the | |
| * clip bounds should be blue (or the background color) and | |
| * everything inside the clip bounds should be red (or the | |
| * background color). So any blue pixel inside or red | |
| * pixel outside means that there was a drawing error and | |
| * the test fails. | |
| * There are 4 modes that the test can run in (dynamic mode is | |
| * exclusive to the other modes, but the other modes are combinable): | |
| * | |
| * (default): the clip is set | |
| * to a default size (100x100) and the test is run. | |
| * | |
| * -quick: The error | |
| * check is run only after every quadrant of lines is | |
| * drawn. This speeds up the test considerably with | |
| * some less accuracy in error checking (because pixels | |
| * from some lines may overdrawn pixels from other lines | |
| * before we have verified the correctness of those | |
| * pixels). | |
| * | |
| * -dynamic: There is no error checking, but this version | |
| * of the test automatically resizes the clip bounds and | |
| * reruns the test over and over. Nothing besides the | |
| * visual check verifies that the test is running correctly. | |
| * | |
| * -rect: Instead of drawing lines, the test draws rectangles | |
| * to/from all points in all quadrants. This tests similar | |
| * clipping functionality for drawRect(). | |
| * | |
| * n (where "n" is a number): sets the clip size to the | |
| * given value. Just like the default test except that | |
| * the clip size is as specified. | |
| * | |
| * Note: this test must be run with the -Dsun.java2d.ddforcevram=true | |
| * option to force the test image to stay in VRAM. We currently | |
| * punt VRAM images to system memory when we detect lots of | |
| * reads. Since we read the whole buffer on every error check | |
| * to copy it to the BufferedImage), this causes us to punt the | |
| * buffer. A system memory surface will have no d3d capabilities, | |
| * thus we are not testing the d3d line quality when this happens. | |
| * By using the ddforcevram flag, we make sure the buffer | |
| * stays put in VRAM and d3d is used to draw the lines. | |
| */ | |
| import javax.swing.*; | |
| import java.awt.*; | |
| import java.awt.image.*; | |
| public class LineClipTest extends Component implements Runnable { | |
| int clipBumpVal = 5; | |
| static int clipSize = 100; | |
| int clipX1; | |
| int clipY1; | |
| static final int NUM_QUADS = 9; | |
| Point quadrants[][] = new Point[NUM_QUADS][]; | |
| static boolean dynamic = false; | |
| BufferedImage imageChecker = null; | |
| Color unclippedColor = Color.blue; | |
| Color clippedColor = Color.red; | |
| int testW = -1, testH = -1; | |
| VolatileImage testImage = null; | |
| static boolean keepRunning = false; | |
| static boolean quickTest = false; | |
| static boolean rectTest = false; | |
| static boolean runTestDone = false; | |
| static Frame f = null; | |
| /** | |
| * Check for errors in the grid. This error check consists of | |
| * copying the buffer into a BufferedImage and reading all pixels | |
| * in that image. No pixel outside the clip bounds should be | |
| * of the color clippedColor and no pixel inside should be | |
| * of the color unclippedColor. Any wrong color returns an error. | |
| */ | |
| boolean gridError(Graphics g) { | |
| boolean error = false; | |
| if (imageChecker == null || (imageChecker.getWidth() != testW) || | |
| (imageChecker.getHeight() != testH)) | |
| { | |
| // Recreate BufferedImage as necessary | |
| GraphicsConfiguration gc = getGraphicsConfiguration(); | |
| ColorModel cm = gc.getColorModel(); | |
| WritableRaster wr = | |
| cm.createCompatibleWritableRaster(getWidth(), getHeight()); | |
| imageChecker = | |
| new BufferedImage(cm, wr, | |
| cm.isAlphaPremultiplied(), null); | |
| } | |
| // Copy buffer to BufferedImage | |
| Graphics gChecker = imageChecker.getGraphics(); | |
| gChecker.drawImage(testImage, 0, 0, this); | |
| // Set up pixel colors to check against | |
| int clippedPixelColor = clippedColor.getRGB(); | |
| int unclippedPixelColor = unclippedColor.getRGB(); | |
| int wrongPixelColor = clippedPixelColor; | |
| boolean insideClip = false; | |
| for (int row = 0; row < getHeight(); ++row) { | |
| for (int col = 0; col < getWidth(); ++col) { | |
| if (row >= clipY1 && row < (clipY1 + clipSize) && | |
| col >= clipX1 && col < (clipX1 + clipSize)) | |
| { | |
| // Inside clip bounds - should not see unclipped color | |
| wrongPixelColor = unclippedPixelColor; | |
| } else { | |
| // Outside clip - should not see clipped color | |
| wrongPixelColor = clippedPixelColor; | |
| } | |
| int pixel = imageChecker.getRGB(col, row); | |
| if (pixel == wrongPixelColor) { | |
| System.out.println("FAILED: pixel = " + | |
| Integer.toHexString(pixel) + | |
| " at (x, y) = " + col + ", " + row); | |
| // Draw magenta rectangle around problem pixel in buffer | |
| // for visual feedback to user | |
| g.setColor(Color.magenta); | |
| g.drawRect(col - 1, row - 1, 2, 2); | |
| error = true; | |
| } | |
| } | |
| } | |
| return error; | |
| } | |
| /** | |
| * Draw all test lines and check for errors (unless running | |
| * with -dynamic option) | |
| */ | |
| void drawLineGrid(Graphics screenGraphics, Graphics g) { | |
| // Fill buffer with background color | |
| g.setColor(Color.white); | |
| g.fillRect(0, 0, getWidth(), getHeight()); | |
| // Now, iterate through all quadrants | |
| for (int srcQuad = 0; srcQuad < NUM_QUADS; ++srcQuad) { | |
| // Draw lines to all other quadrants | |
| for (int dstQuad = 0; dstQuad < NUM_QUADS; ++dstQuad) { | |
| for (int srcPoint = 0; | |
| srcPoint < quadrants[srcQuad].length; | |
| ++srcPoint) | |
| { | |
| // For every point in the source quadrant | |
| int sx = quadrants[srcQuad][srcPoint].x; | |
| int sy = quadrants[srcQuad][srcPoint].y; | |
| for (int dstPoint = 0; | |
| dstPoint < quadrants[dstQuad].length; | |
| ++dstPoint) | |
| { | |
| int dx = quadrants[dstQuad][dstPoint].x; | |
| int dy = quadrants[dstQuad][dstPoint].y; | |
| if (!rectTest) { | |
| // Draw unclipped/clipped lines to every | |
| // point in the dst quadrant | |
| g.setColor(unclippedColor); | |
| g.drawLine(sx, sy, dx, dy); | |
| g.setClip(clipX1, clipY1, clipSize, clipSize); | |
| g.setColor(clippedColor); | |
| g.drawLine(sx,sy, dx, dy); | |
| } else { | |
| // Draw unclipped/clipped rectangles to every | |
| // point in the dst quadrant | |
| g.setColor(unclippedColor); | |
| int w = dx - sx; | |
| int h = dy - sy; | |
| g.drawRect(sx, sy, w, h); | |
| g.setClip(clipX1, clipY1, clipSize, clipSize); | |
| g.setColor(clippedColor); | |
| g.drawRect(sx, sy, w, h); | |
| } | |
| g.setClip(null); | |
| } | |
| if (!dynamic) { | |
| // Draw screen update for visual feedback | |
| screenGraphics.drawImage(testImage, 0, 0, this); | |
| // On default test, check for errors after every | |
| // src point | |
| if (!quickTest && gridError(g)) { | |
| throw new java.lang.RuntimeException("Failed"); | |
| } | |
| } | |
| } | |
| } | |
| if (!dynamic && quickTest && gridError(g)) { | |
| // On quick test, check for errors only after every | |
| // src quadrant | |
| throw new java.lang.RuntimeException("Failed"); | |
| //return; | |
| } | |
| } | |
| if (!dynamic) { | |
| System.out.println("PASSED"); | |
| if (!keepRunning) { | |
| f.dispose(); | |
| } | |
| } | |
| } | |
| /** | |
| * If we have not yet run the test, or if the window size has | |
| * changed, or if we are running the test in -dynamic mode, | |
| * run the test. Then draw the test buffer to the screen | |
| */ | |
| public void paint(Graphics g) { | |
| if (dynamic || testImage == null || | |
| getWidth() != testW || getHeight() != testH) | |
| { | |
| runTest(g); | |
| } | |
| if (testImage != null) { | |
| g.drawImage(testImage, 0, 0, this); | |
| } | |
| } | |
| /* | |
| * Create the quadrant of points and run the test to draw all the lines | |
| */ | |
| public void runTest(Graphics screenGraphics) { | |
| if (getWidth() == 0 || getHeight() == 0) { | |
| // May get here before window is really ready | |
| return; | |
| } | |
| clipX1 = (getWidth() - clipSize) / 2; | |
| clipY1 = (getHeight() - clipSize) / 2; | |
| int clipX2 = clipX1 + clipSize; | |
| int clipY2 = clipY1 + clipSize; | |
| int centerX = getWidth()/2; | |
| int centerY = getHeight()/2; | |
| int leftX = 0; | |
| int topY = 0; | |
| int rightX = getWidth() - 1; | |
| int bottomY = getHeight() - 1; | |
| int quadIndex = 0; | |
| // Offsets are used to force diagonal (versus hor/vert) lines | |
| int xOffset = 0; | |
| int yOffset = 0; | |
| if (quadrants[0] == null) { | |
| for (int i = 0; i < 9; ++i) { | |
| int numPoints = (i == 4) ? 9 : 3; | |
| quadrants[i] = new Point[numPoints]; | |
| } | |
| } | |
| // Upper-left | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(leftX + xOffset, clipY1 - 1 - yOffset), | |
| new Point(leftX + xOffset, topY + yOffset), | |
| new Point(clipX1 - 1 - xOffset, topY + yOffset), | |
| }; | |
| quadIndex++; | |
| yOffset++; | |
| // Upper-middle | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(clipX1 + 1 + xOffset, topY + yOffset), | |
| new Point(centerX + xOffset, topY + yOffset), | |
| new Point(clipX2 - 1 - xOffset, topY + yOffset), | |
| }; | |
| quadIndex++; | |
| ++yOffset; | |
| // Upper-right | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(clipX2 + 1 + xOffset, topY + yOffset), | |
| new Point(rightX - xOffset, topY + yOffset), | |
| new Point(rightX - xOffset, clipY1 - 1 - yOffset), | |
| }; | |
| quadIndex++; | |
| yOffset = 0; | |
| ++xOffset; | |
| // Middle-left | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(leftX + xOffset, clipY1 + 1 + yOffset), | |
| new Point(leftX + xOffset, centerY + yOffset), | |
| new Point(leftX + xOffset, clipY2 - 1 - yOffset), | |
| }; | |
| quadIndex++; | |
| ++yOffset; | |
| // Middle-middle | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(clipX1 + 1 + xOffset, clipY1 + 1 + yOffset), | |
| new Point(centerX + xOffset, clipY1 + 1 + yOffset), | |
| new Point(clipX2 - 1 - xOffset, clipY1 + 1 + yOffset), | |
| new Point(clipX1 + 1 + xOffset, centerY + yOffset), | |
| new Point(centerX + xOffset, centerY + yOffset), | |
| new Point(clipX2 - 1 - xOffset, centerY + yOffset), | |
| new Point(clipX1 + 1 + xOffset, clipY2 - 1 - yOffset), | |
| new Point(centerX + xOffset, clipY2 - 1 - yOffset), | |
| new Point(clipX2 - 1 - xOffset, clipY2 - 1 - yOffset), | |
| }; | |
| quadIndex++; | |
| ++yOffset; | |
| // Middle-right | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(rightX - xOffset, clipY1 + 1 + yOffset), | |
| new Point(rightX - xOffset, centerY + yOffset), | |
| new Point(rightX - xOffset, clipY2 - 1 - yOffset), | |
| }; | |
| quadIndex++; | |
| yOffset = 0; | |
| ++xOffset; | |
| // Lower-left | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(leftX + xOffset, clipY2 + 1 + yOffset), | |
| new Point(leftX + xOffset, bottomY - yOffset), | |
| new Point(clipX1 - 1 - xOffset, bottomY - yOffset), | |
| }; | |
| quadIndex++; | |
| ++yOffset; | |
| // Lower-middle | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(clipX1 + 1 + xOffset, bottomY - yOffset), | |
| new Point(centerX + xOffset, bottomY - yOffset), | |
| new Point(clipX2 - 1 - xOffset, bottomY - yOffset), | |
| }; | |
| quadIndex++; | |
| ++yOffset; | |
| // Lower-right | |
| quadrants[quadIndex] = new Point[] { | |
| new Point(clipX2 + 1 + xOffset, bottomY - yOffset), | |
| new Point(rightX - xOffset, bottomY - yOffset), | |
| new Point(rightX - xOffset, clipY2 + 1 + yOffset), | |
| }; | |
| if (testImage != null) { | |
| testImage.flush(); | |
| } | |
| testW = getWidth(); | |
| testH = getHeight(); | |
| testImage = createVolatileImage(testW, testH); | |
| Graphics g = testImage.getGraphics(); | |
| do { | |
| int valCode = testImage.validate(getGraphicsConfiguration()); | |
| if (valCode == VolatileImage.IMAGE_INCOMPATIBLE) { | |
| testImage.flush(); | |
| testImage = createVolatileImage(testW, testH); | |
| g = testImage.getGraphics(); | |
| } | |
| drawLineGrid(screenGraphics, g); | |
| } while (testImage.contentsLost()); | |
| if (dynamic) { | |
| // Draw clip box if dynamic | |
| g.setClip(null); | |
| g.setColor(Color.black); | |
| g.drawRect(clipX1, clipY1, clipSize, clipSize); | |
| screenGraphics.drawImage(testImage, 0, 0, this); | |
| } | |
| runTestDone = true; | |
| } | |
| /** | |
| * When running -dynamic, resize the clip bounds and run the test | |
| * over and over | |
| */ | |
| public void run() { | |
| while (true) { | |
| clipSize += clipBumpVal; | |
| if (clipSize > getWidth() || clipSize < 0) { | |
| clipBumpVal = -clipBumpVal; | |
| clipSize += clipBumpVal; | |
| } | |
| update(getGraphics()); | |
| try { | |
| Thread.sleep(50); | |
| } catch (Exception e) {} | |
| } | |
| } | |
| public static void main(String args[]) { | |
| for (int i = 0; i < args.length; ++i) { | |
| if (args[i].equals("-dynamic")) { | |
| dynamic = true; | |
| } else if (args[i].equals("-rect")) { | |
| rectTest = true; | |
| } else if (args[i].equals("-quick")) { | |
| quickTest = true; | |
| } else if (args[i].equals("-keep")) { | |
| keepRunning = true; | |
| } else { | |
| // could be clipSize | |
| try { | |
| clipSize = Integer.parseInt(args[i]); | |
| } catch (Exception e) {} | |
| } | |
| } | |
| f = new Frame(); | |
| f.setSize(500, 500); | |
| LineClipTest test = new LineClipTest(); | |
| f.add(test); | |
| if (dynamic) { | |
| Thread t = new Thread(test); | |
| t.start(); | |
| } | |
| f.setVisible(true); | |
| while (!runTestDone) { | |
| // need to make sure jtreg doesn't exit before the | |
| // test is done... | |
| try { | |
| Thread.sleep(50); | |
| } catch (Exception e) {} | |
| } | |
| } | |
| } |