tree df57199d7827b400eaafa5a11ce6875de77f0c47
parent 778d5279b964230b3d2821ad5e7aa55897fc9e89
author Jamie Madill <jmadill@chromium.org> 1407167963 -0400
committer Jamie Madill <jmadill@chromium.org> 1407176840 +0000

Fix single buffer copies.

In D3D11, the device doesn't allow overlapped buffer copies unless
the D3D11_FEATURE_DATA_D3D11_OPTIONS::CopyWithOverlap feature is
enabled. This isn't technically available until D3D11.1.

Get around the restriction by using a different storage buffer as
the source of the copy.

Fixes funcional.buffer.copy.single_buffer.* in dEQP.

BUG=angle:715

Change-Id: I03fea8a1c6180a29e07e05022e3454524e320803
Reviewed-on: https://chromium-review.googlesource.com/210902
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Nicolas Capens <capn@chromium.org>