Fix RTAdjust for Direct3D.

D3D's NDC space is y-flipped compared to Vulkan and Metal.

Change-Id: I9ab55efd431f2db877cea8e55d78eec737655a38
Bug: skia:9935
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/293341
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed