[Bug 85999] [BDW Bisected]GpuTest_v0.5_triangle/GLbenchmark v2.5.1 EgyptTestStandard/SynMark2 performance are reduced ~10%-60%

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85999

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
There was a bug in the ddx that was causing the GPU to not evaluate the blits
for SwapBuffers(). This gave inflated results for swap/bandwidth bound
benchmarks like Triangles. 0532a3313ad9c76a6e1d28e8a1c2ea495583fead fixes the
copies so that they actually are performed by the GPU and corrects the
benchmark results.

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