[PATCH] d3d10core/tests: Add test for rendering to A8_UNORM texture.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=43261

Your paranoid android.


=== debian9 (32 bit Wine report) ===

d3d10core:
Unhandled exception: page fault on read access to 0x2e2f2e56 in 32-bit code (0x7ed9e918).

=== debian9 (build log) ===