[Bug 45724] Multiple EndScene calls result in multiple glFlush (FF XIV)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45724

--- Comment #2 from Andrew Wesie <awesie at gmail.com> ---
Is the concern that applications may expect EndScene (without a Present call)
to flush the pipeline and they can rely on that instead of using the
D3DGETDATA_FLUSH flag for queries?

While I haven't found an authoritative source regarding EndScene and flushes, a
random forum post
(https://www.gamedev.net/forums/topic/620095-present-without-actually-presenting/?do=findComment&comment=4911694)
states that:

"without calling Present() you can't be sure that after EndScene() the GPU will
flush the pipeline"

I agree that a unit test demonstrating this behavior would be ideal.

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