Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8156149

Blurry rendering on Windows 7 at 125% screen setting

    Details

    • Subcomponent:
      2d
    • CPU:
      x86_64
    • OS:
      windows_7

      Description

      FULL PRODUCT VERSION :
      java version "9-ea"
      Java(TM) SE Runtime Environment (build 9-ea+116)
      Java HotSpot(TM) 64-Bit Server VM (build 9-ea+116, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows [Version 6.1.7601]

      EXTRA RELEVANT SYSTEM CONFIGURATION :
      In the windows control setting for screen it is set at 125%

      A DESCRIPTION OF THE PROBLEM :
      Font rendering (or image display?) is blurry when screen options set at 125%. Sadly I can't attach screenshots. This can be tested with any GUI program, e.g. jvisualvm.exe => look at the splash window.

      I have screenshots of the splash window with both JDKs. They have different sizes. This looks as if java9 does a (poor) magnifying after the rendering is done. The good one is 470 x 270, the bad one is 589 x 339.

      The same problem can also be seen with the Apache PDFBOX debugger-app-2.0.1.jar (get it at https://pdfbox.apache.org/download.cgi ) and then drag and drop any PDF with text on it. Even the menus look poor. After opening a PDF, use the menu and click "View", "Zoom". The bullet symbol looks bad.

      There is a similar issue:
      http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8129862

      But that one is said to be resolved, which is why I opened this issue.

      REGRESSION. Last worked in version 7u79

      ADDITIONAL REGRESSION INFORMATION:
      java version "1.7.0_79"
      Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
      Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)


      (It was also fine working on the latest JDK8, which I use at work but not here at home)

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      start C:\Program Files\Java\jdk-9\bin\jvisualvm.exe and look at the splash window.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      sharp glyphs
      ACTUAL -
      blurry glyphs

      REPRODUCIBILITY :
      This bug can be reproduced always.

      CUSTOMER SUBMITTED WORKAROUND :
      set windows screen control options at 100%

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                alexsch Alexandr Scherbatiy
                Reporter:
                webbuggrp Webbug Group
              • Votes:
                0 Vote for this issue
                Watchers:
                7 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: