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[Bug 791074] Re: blur plugin messes up window shadows


** Attachment added: "example.png"

** Description changed:

  Binary package hint: compiz
  Hello! On Natty, if both “Window decorations” and “Blur” plugins are
  enabled, and the settings for blur include “Alpha blur”, the windows
  where alpha blur applies have messed up shadows. (I use “normal” as the
  window filter for alpha blur; examples of transparent areas are the
  gnome terminal in some profiles, and unfocused window title bars, and
  some popups.)
  First  of all, the shadowed areas are also blured, which I believe to be
  wrong behavior. (Only translucent part of “logical” windows should be
  blured, not effects like shadow.)
  Second, the shadow becomes “messy”: it’s a dynamic bug, the exact
  effects vary when moving windows around, including darkening or
  lightening of the shadow, and various lines and areas of varying
  opacity. I’m including a screenshot with an example.
+ (CCSM shows “/usr/bin/compiz-decorator” as the “Command” in the window
+ decorations plugin, by the way.)
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: compiz 1:0.9.4+bzr20110415-0ubuntu2
  ProcVersionSignature: Ubuntu 2.6.38-9.43-generic
  Uname: Linux 2.6.38-9-generic x86_64
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
-  NVRM version: NVIDIA UNIX x86_64 Kernel Module  270.41.06  Mon Apr 18 14:53:56 PDT 2011
-  GCC version:  gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
+  NVRM version: NVIDIA UNIX x86_64 Kernel Module  270.41.06  Mon Apr 18 14:53:56 PDT 2011
+  GCC version:  gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,titleinfo,mousepoll,blur,move,obs,thumbnail,compiztoolbox,snap,regex,place,imgpng,vpswitch,grid,extrawm,gnomecompat,resize,animation,wall,session,expo,workarounds,ezoom,animationaddon,staticswitcher,fade,scale,scaleaddon]
  CompositorRunning: compiz
  Date: Wed Jun  1 09:00:23 2011
  DistUpgraded: Log time: 2010-08-16 14:31:52.248788
  DistroCodename: natty
  DistroVariant: ubuntu
-  nvidia-current, 270.41.06, 2.6.38-9-generic, x86_64: installed 
-  nvidia-current, 270.41.06, 2.6.38-8-generic, x86_64: installed 
-  vboxhost, 4.0.0, 2.6.37-12-generic, x86_64: installed
+  nvidia-current, 270.41.06, 2.6.38-9-generic, x86_64: installed
+  nvidia-current, 270.41.06, 2.6.38-8-generic, x86_64: installed
+  vboxhost, 4.0.0, 2.6.37-12-generic, x86_64: installed
  EcryptfsInUse: Yes
-  nVidia Corporation G94 [GeForce 9600 GT] [10de:0622] (rev a1) (prog-if 00 [VGA controller])
-    Subsystem: Giga-byte Technology Device [1458:3488]
+  nVidia Corporation G94 [GeForce 9600 GT] [10de:0622] (rev a1) (prog-if 00 [VGA controller])
+    Subsystem: Giga-byte Technology Device [1458:3488]
-  xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
-  xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, Not in use)
+  xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
+  xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, Not in use)
  MachineType: System manufacturer P5Q-PRO
  PackageArchitecture: all
-  LANGUAGE=en_US:en
-  PATH=(custom, user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  LANGUAGE=en_US:en
+  PATH=(custom, user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-9-generic root=UUID=f345b250-3225-489c-a2a5-5c7a2b21a0fd ro
  ProcVersionSignature_: Ubuntu 2.6.38-9.43-generic
  Renderer: Unknown
  SourcePackage: compiz
  UpgradeStatus: Upgraded to natty on 2010-08-16 (288 days ago)
  dmi.bios.date: 11/04/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1501
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P5Q-PRO
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1501:bd11/04/2008:svnSystemmanufacturer:pnP5Q-PRO:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5Q-PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: P5Q-PRO
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
  version.ia32-libs: ia32-libs 20090808ubuntu13
  version.libdrm2: libdrm2 2.4.23-1ubuntu6
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.10.2-0ubuntu2
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

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  blur plugin messes up window shadows