Xinghua Cao db34c78910 Check FP16 support on D3D backend
True FP16 is only supported in DXC through Shader Model 6.2, also
check the value of the Native16BitShaderOpsSupported member of
D3D12_FEATURE_DATA_D3D12_OPTIONS4 to view whether hardware actually
supports FP16 operations.

BUG=dawn:426
TEST=dawn_end2end_tests

Change-Id: If675f7ba650cb1bd8c792928b70619b9ccda048a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/23243
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Xinghua Cao <xinghua.cao@intel.com>
2020-07-06 08:28:00 +00:00
..
2020-04-14 17:36:44 +00:00
2020-02-07 23:46:30 +00:00