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  1. JDK
  2. JDK-6762511

Translucency is not working on Linux using Metacity



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    • Introduced In Version:
    • Resolved In Build:
    • CPU:
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        J2SE Version (please include all output from java -version flag):
        java version "1.6.0_10"
        Java(TM) SE Runtime Environment (build 1.6.0_10-b33)
        Java HotSpot(TM) Client VM (build 11.0-b15, mixed mode, sharing)

        Does this problem occur on J2SE 5.0.x or 6.0? Yes / No (pick one)

        Operating System Configuration Information (be specific):
        Linux Ubuntu 7.10
        Window Manager: Metacity
        name of display: :0.0
        version number: 11.0
        vendor string: The X.Org Foundation
        vendor release number: 10300000
        X.Org version: 1.3.0
        maximum request size: 16777212 bytes
        motion buffer size: 256
        bitmap unit, bit order, padding: 32, LSBFirst, 32
        image byte order: LSBFirst
        number of supported pixmap formats: 7
        supported pixmap formats:
            depth 1, bits_per_pixel 1, scanline_pad 32
            depth 4, bits_per_pixel 8, scanline_pad 32
            depth 8, bits_per_pixel 8, scanline_pad 32
            depth 15, bits_per_pixel 16, scanline_pad 32
            depth 16, bits_per_pixel 16, scanline_pad 32
            depth 24, bits_per_pixel 32, scanline_pad 32
            depth 32, bits_per_pixel 32, scanline_pad 32
        keycode range: minimum 8, maximum 255
        focus: window 0x2801083, revert to Parent
        number of extensions: 29
        default screen number: 0
        number of screens: 1

        screen #0:
          dimensions: 800x600 pixels (323x242 millimeters)
          resolution: 63x63 dots per inch
          depths (7): 16, 1, 4, 8, 15, 24, 32
          root window id: 0x3b
          depth of root window: 16 planes
          number of colormaps: minimum 1, maximum 1
          default colormap: 0x20
          default number of colormap cells: 64
          preallocated pixels: black 0, white 65535
          options: backing-store NO, save-unders NO
          largest cursor: 800x600
          current input event mask: 0xfa0033
            KeyPressMask KeyReleaseMask EnterWindowMask
            LeaveWindowMask StructureNotifyMask SubstructureNotifyMask
            SubstructureRedirectMask FocusChangeMask PropertyChangeMask
          number of visuals: 2
          default visual id: 0x21
            visual id: 0x21
            class: TrueColor
            depth: 16 planes
            available colormap entries: 64 per subfield
            red, green, blue masks: 0xf800, 0x7e0, 0x1f
            significant bits in color specification: 6 bits
            visual id: 0x39
            class: TrueColor
            depth: 32 planes
            available colormap entries: 256 per subfield
            red, green, blue masks: 0xff0000, 0xff00, 0xff
            significant bits in color specification: 8 bits

        Bug Description:

        Translucency is not working on Linux using Metacity
        According to the documentation Translucency on Linux using Metacity should work: 'X11: if running a composite (or compositing window-) manager like Compiz'.

        Run the code below:

        * All 4 buttons to be enabled.
        * The 'Output Graphics Configurations' button should output the Graphics Configurations
        * The 'Test PERPIXEL_TRANSLUCENT' button should show a frame with the left third completely transparent (the cursor will control whatever is under it),
        the middle third very transparent (the crosshair cursor should be shown when over this third),
        the right third semi translucent (half way between red and the underlying color)
        * The 'Test PERPIXEL_TRANSPARENT' button should show a circle shaped frame
        * The 'Test TRANSLUCENT' button should show a a semi translucent frame

        * The first 3 buttons are enabled and the 'Test TRANSLUCENT' button is not
        * The 'Output Graphics Configurations' button outputs:
        X11GraphicsConfig[dev=X11GraphicsDevice[screen=0],vis=0x21] is Translucency Capable: false
        X11GraphicsConfig[dev=X11GraphicsDevice[screen=0],vis=0x39] is Translucency Capable: true
        * The 'Test PERPIXEL_TRANSLUCENT' button shows a Frame with the left two thirds completely black (with the crosshair cursor),
        the right third is half way between red and black [this is a very big problem - we can't have users seeing that]
        * The 'Test PERPIXEL_TRANSPARENT' button should show a circle shaped frame (this works as expected)
        * isTranslucencySupported(TRANSLUCENT) is returning false so we don't even know the results here


            Issue Links



                avu Alexey Ushakov
                tyao Ting-Yun Ingrid Yao (Inactive)
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