[Bug 65694] [HSW] FBC didn’t save power for game workload

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65694

--- Comment #2 from Ouping Zhang <ouping.zhang at intel.com> ---
But I confused why game workload saved 0.1w power, and HSW didn't.
(In reply to comment #1)
> In the game workload, the criteria is for FBC not to consume more power.
> Since every frame requires recompression (costing power), and ideally the
> game is running at the vertical refresh, there is no power saving from used
> the same compressed data for more than one refresh. For this reason, FBC is
> turned off under this workload.

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