streamline memset cases in SkRasterPipelineBlitter
The attached Chromium bug got me looking at profiles of .skps that
render very quickly, mostly with memset, and I noticed a few little
microoptimizations to make.
This prebakes a bit more of the blitter memset logic, trimming redundant
calls to SkImageInfo::shiftPerPixel(). This also reduces the number of
lookups of the various SkOpts::memsetNN function pointers from being
once per row to once per rectangle being memset.
Bug: chromium:903195
Change-Id: Ifdee266ecd28be6266ea640fec754399035f083e
Reviewed-on: https://skia-review.googlesource.com/c/169681
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed