wxGetActiveWindow is implemented as "return NULL" on OS X, while
wxWindow::FindFocus works. On Windows, the difference is in the use of
GetActiveWindow() vs. GetForegroundWindow(). A MSDN comment says:
> A system has only one active window, which GetForegroundWindow()
> returns. GetActiveWindow() seems to return the same window as
> GetForegroundWindow() if the foreground window belongs to the current
> thread. Otherwise, it always returns null, rather than the topmost
> window of the calling thread.
Since we are on the GUI thread, it shouldn't make any difference.
When a game was running and someone opened the video dialog, it would crash. This is because the preprocessor macro should have been __APPLE__ not _APPLE_
Fixes issue 7644.
This class loads all the common PP shader configuration options and passes those options through to a inherited class that OpenGL or D3D will have.
Makes it so all the common code for PP shaders is in VideoCommon instead of duplicating the code across each backend.
The hack was needed because the Nvidia 3D Vision heuristics are documented to only support surfaces that are the same size as the backbuffer. This would be the case if you enabled the hack and selected the "Auto (Window Size)" internal resolution.
However, on recent drivers the same effect is achieved by selecting the "Auto (Multiple)" internal resolution. Therefore the hack is no longer required.
Checks if another game is already starting to boot before starting to boot a new one, and only change video backend, and dual core if a game is actually not running.
