| /* |
| * 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) {} |
| } |
| } |
| } |
