Graphics: Ignore borderless parameter unless windows are full-screen.

[rokups]

I do agree that borderless fullscreen as a default is OK, but it does not make much sense for windowed apps. How about we do something like this?

[eugeneko]

Does borderless even work now?
How to create "fullscreen" window without requesting native exclusive fullscreen mode from OS?

Borderless windows are supposed to replace clumsy native fullscreen, and this PR (from the look of it) does the opposite.

[eugeneko]

We probably just should use enum here.

[rokups]

Good question.. Tbh i have no idea whether this works, because both borderless and actual full screen are identical on my OS, i did not check on windows. However, on windows difference can be spotted when alt+tabbing. Exclusive full-screen takes longer while borderless is immediate. You must know how borderless works in general: just a window without borders, that covers entire screen space.

Borderless windows are supposed to replace clumsy native fullscreen, and this PR (from the look of it) does the opposite.

Huh.. Maybe i misunderstand something, but my intention was precisely for borderless to replace actual full-screen. Problem i am trying to fix here is setting borderless=true for windowed apps causes a non-full-screen window to have no borders, so we can not drag such windows and what not.

[eugeneko]

Huh.. Maybe i misunderstand something, but my intention was precisely for borderless to replace actual full-screen.

AFAIK our "fullscreen" maps directly onto "native OS fullscreen" and takes precedence.
That's why I should probably just make a enum and clean all this mess xD