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| author | mtklein <mtklein@chromium.org> | 2015-06-24 15:18:39 -0700 |
|---|---|---|
| committer | Steve Kondik <steve@cyngn.com> | 2016-06-27 17:34:48 -0700 |
| commit | a72becebcc762e90b14708a0cca677c3426dbff2 (patch) | |
| tree | b2cca7587577ce8bf6dbd22b27100443a82fe719 /codereview.settings | |
| parent | 66b1265cd8ce01288de9be29970719e519a3dfd8 (diff) | |
| download | android_external_skia-a72becebcc762e90b14708a0cca677c3426dbff2.tar.gz android_external_skia-a72becebcc762e90b14708a0cca677c3426dbff2.tar.bz2 android_external_skia-a72becebcc762e90b14708a0cca677c3426dbff2.zip | |
Implement four more xfermodes with Sk4px.
HardLight, Overlay, Darken, and Lighten are all
~2x faster with SSE, ~25% faster with NEON.
This covers all previously-implemented NEON xfermodes.
3 previous SSE xfermodes remain. Those need division
and sqrt, so I'm planning on using SkPMFloat for them.
It'll help the readability and NEON speed if I move that
into [0,1] space first.
The main new concept here is c.thenElse(t,e), which behaves like
(c ? t : e) except, of course, both t and e are evaluated. This allows
us to emulate conditionals with vectors.
This also removes the concept of SkNb. Instead of a standalone bool
vector, each SkNi or SkNf will just return their own types for
comparisons. Turns out to be a lot more manageable this way.
BUG=skia:
Committed: https://skia.googlesource.com/skia/+/b9d4163bebab0f5639f9c5928bb5fc15f472dddc
CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-Arm64-Debug-Android-Trybot
Review URL: https://codereview.chromium.org/1196713004
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