Fix rendering of very-thin dashed lines when MSAA is enabled.
The previous code would increase the rendered stroke width to 1px (in
screen-space) to ensure proper subpixel coverage when the dashed line to
render was very thin. However, the MSAA path relies on hardware MSAA for
subpixel coverage. The stroke width is now left as-is when MSAA is on.
Additionally, this CL includes some minor polish to coverage-related
code that I made while hunting for the root cause of the bug.
Bug: skia:10240
Change-Id: I28df59a4e1da3661778acc7766cc8f75b15bc915
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/290643
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
2 files changed