[Bug 36332] Missing rendering in Unity dash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=36332

--- Comment #5 from Jay Taoko <jay.taoko at canonical.com> 2011-04-17 18:24:09 PDT ---
The bug can be reproduced on ATI R300/400/500 GPUs. These GPUs are no longer
supported by fglrx so I couldn't verify if it was strictly a driver issue or if
there was some error in our program code. However, the problem cannot be
reproduced with a Radeon HD 4670 and the open source driver (or fglrx). Nor can
it be reproduced with Intel GPUs such as the GMA 950 and above.

The bug manifest itself in the Unity Dash. When an action is performed to show
more icons in the dash, the rendering does not happen. Elements of the Dash
only appear after the mouse moves over them, but this is the result of Unity
refreshing the rendering. Some elements of the dash also disappear. This make
me think that clipping could be involved. Unity makes extensive use of opengl
scissoring.

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