Drop support for disabling multisample on Mac
We have historically supported non-AA draws to MSAA targets by disabling
GL_MUlTISAMPLE. This only worked on some platforms though, since
disabling multisample isn't generally supported on GLES, Vulkan, or
Metal. In addition to being inconsistent across platforms, toggling
multisample also appears to be a de-optimization at best, and a
spectacular regression at worst.
This CL lowers the set of platforms that support multisample disable and
quits supporting it on Mac. In the near future we can hopefully drop
support completely.
Bug: skia:12196
Change-Id: I8c005c92b408ceb9740d809a84ae79abb8c79ef7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/427087
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
3 files changed
