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cocoa: GL_GetDrawableSize only uses -[NSView convertRectToBacking] for highDPI.
On Mojave, this will report large numbers for retina displays in fullscreen mode, which isn't how it works on previous versions. (transplanted from c6c1731780e2bef94f944a4795e2dfbba46d9500)
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@ -347,11 +347,13 @@ Cocoa_GL_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h)
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NSView *contentView = [windata->nswindow contentView];
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NSRect viewport = [contentView bounds];
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if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
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/* This gives us the correct viewport for a Retina-enabled view, only
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* supported on 10.7+. */
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if ([contentView respondsToSelector:@selector(convertRectToBacking:)]) {
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viewport = [contentView convertRectToBacking:viewport];
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}
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}
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if (w) {
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*w = viewport.size.width;
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