Apply linear gradient premul in 4f
(spotted by reed@)
Instead of converting to SkPMColor first, apply the premul in 4f and
then just store.
A modified bench shows a significant speedup:
17/17 MB 1 690µs 695µs 695µs 700µs 0% █▅▁▄▆▅▁▅▆▃ 8888 gradient_linear_clamp_3color
17/17 MB 1 832µs 837µs 839µs 870µs 1% █▁▁▂▂▂▂▂▂▂ 8888 gradient_linear_clamp_hicolor
17/17 MB 1 651µs 659µs 665µs 701µs 3% ▆█▅▁▂▂▁▁▂▂ 8888 gradient_linear_clamp
vs.
17/17 MB 1 1.03ms 1.03ms 1.04ms 1.08ms 2% ██▇▁▁▁▁▁▁▁ 8888 gradient_linear_clamp_3color
17/17 MB 1 1.17ms 1.18ms 1.18ms 1.22ms 1% █▄▂▁▁▁▁▁▁▁ 8888 gradient_linear_clamp_hicolor
17/17 MB 1 1.1ms 1.15ms 1.14ms 1.16ms 2% ▇▇▇▇▇▇██▁▁ 8888 gradient_linear_clamp
R=reed@google.com,brianosman@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2409583003
Review-Url: https://codereview.chromium.org/2409583003
1 file changed