Added a driver feature check for non-square textures (which some d3d drivers don't seem to support...). It's not yet used in size calculations, though.

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Relaxed the Window caption setting in order to avoid problems with threaded applications or external windows.

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Store the actual render window in ExposedData.OpenGLLinux.X11Window, even for externally created parent windows.

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Merged revision 1599 from 1.4 branch and fixed also the second issue we had with disabled X11 support.

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Merge revisions 1572:1596 from 1.4 branch: Some late bugfixes of the 1.4.2 release. Tutorial generation mechanism.

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Moved windowId and sourceRect parameters from endScene to beginScene in order to support several windows for OpenGL as well. This is not yet implemented, though, just made some preparations.

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Merged revisions 1561:1570 from 1.4 branch. This fixes the ZWrite enable scene attribute and does some minor cosmetic changes.

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Merged revisions 1543:1559 from 1.4 branch. Mainly zbuffer issues and the TextureMatrix allocator patch.

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Hmm, general front buffer reading is bad for texture based RTTs, so fixed this change to the screenshot method.

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Animator now remembers the previously used camera and resets the OldTarget on a change

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