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[Bug 830949] Re: [Intel N10 Graphics] Need Compiz' "Copy to Texture" plugin so can display on multi-head layouts bigger than the max GL texture size

 

re Ara, David and others; if I understand the situation:

  1. Hardware has a max texture target of 2048x2048.
  2. 1024 wide (internal) + 1280 wide (external) > 2048; so Unity 3D fails, Unity 2D works; error message shown
  3. 600 high (internal) + 1024 high (external) <= 2048; so Unity 3D works, Unity 2D works.  Nothing shown
  4. On *some* N10 systems, somehow the machine ends up setting/enabling the impossible (2) situation, without warning

Two questions:

  a. Is the summary above correct?
  b. If so, how to cause (4) reliably?

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https://bugs.launchpad.net/bugs/830949

Title:
  [Intel N10 Graphics] Need Compiz' "Copy to Texture" plugin so can
  display on multi-head layouts bigger than the max GL texture size

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