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clean up SK_LEGACY_COMPLEX_XFERMODES

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Change-Id: I1c7157ecffb5f8c4ac56a7c4ca33eb343014468b
Reviewed-on: https://skia-review.googlesource.com/c/164180
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
This commit is contained in:
Mike Klein 2018-10-22 09:43:42 -04:00 committed by Skia Commit-Bot
parent dae3585451
commit b2a232fb20
2 changed files with 0 additions and 83 deletions
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6
src/core/SkBlitter.cpp
View File

@ -948,15 +948,9 @@ bool SkBlitter::UseRasterPipelineBlitter(const SkPixmap& device, const SkPaint&
return true;
}
// ... unless the blend mode is complicated enough.
#if defined(SK_LEGACY_COMPLEX_XFERMODES)
if (paint.getBlendMode() > SkBlendMode::kLastSeparableMode) {
return true;
}
#else
if (paint.getBlendMode() > SkBlendMode::kLastCoeffMode) {
return true;
}
#endif
if (matrix.hasPerspective()) {
return true;
}

77
src/opts/SkXfermode_opts.h
View File

@ -46,74 +46,6 @@ XFERMODE(Screen) {
return s + d.approxMulDiv255(s.inv());
}
#if defined(SK_LEGACY_COMPLEX_XFERMODES)
XFERMODE(Multiply) { return (s * d.alphas().inv() + d * s.alphas().inv() + s*d).div255(); }
// [ Sa + Da - Sa*Da, Sc + Dc - 2*min(Sc*Da, Dc*Sa) ] (And notice Sa*Da == min(Sa*Da, Da*Sa).)
XFERMODE(Difference) {
auto m = Sk4px::Wide::Min(s * d.alphas(), d * s.alphas()).div255();
// There's no chance of underflow, and if we subtract m before adding s+d, no overflow.
return (s - m) + (d - m.zeroAlphas());
}
// [ Sa + Da - Sa*Da, Sc + Dc - 2*Sc*Dc ]
XFERMODE(Exclusion) {
auto p = s.approxMulDiv255(d);
// There's no chance of underflow, and if we subtract p before adding src+dst, no overflow.
return (s - p) + (d - p.zeroAlphas());
}
// We take care to use exact math for these next few modes where alphas
// and colors are calculated using significantly different math. We need
// to preserve premul invariants, and exact math makes this easier.
//
// TODO: Some of these implementations might be able to be sped up a bit
// while maintaining exact math, but let's follow up with that.
XFERMODE(HardLight) {
auto sa = s.alphas(),
da = d.alphas();
auto srcover = s + (d * sa.inv()).div255();
auto isLite = ((sa-s) < s).widenLoHi();
auto lite = sa*da - ((da-d)*(sa-s) << 1),
dark = s*d << 1,
both = s*da.inv() + d*sa.inv();
auto alphas = srcover;
auto colors = (both + isLite.thenElse(lite, dark)).div255();
return alphas.zeroColors() + colors.zeroAlphas();
}
XFERMODE(Overlay) { return HardLight()(s,d); }
XFERMODE(Darken) {
auto sa = s.alphas(),
da = d.alphas();
auto sda = (s*da).div255(),
dsa = (d*sa).div255();
auto srcover = s + (d * sa.inv()).div255(),
dstover = d + (s * da.inv()).div255();
auto alphas = srcover,
colors = (sda < dsa).thenElse(srcover, dstover);
return alphas.zeroColors() + colors.zeroAlphas();
}
XFERMODE(Lighten) {
auto sa = s.alphas(),
da = d.alphas();
auto sda = (s*da).div255(),
dsa = (d*sa).div255();
auto srcover = s + (d * sa.inv()).div255(),
dstover = d + (s * da.inv()).div255();
auto alphas = srcover,
colors = (dsa < sda).thenElse(srcover, dstover);
return alphas.zeroColors() + colors.zeroAlphas();
}
#endif//SK_LEGACY_COMPLEX_XFERMODES
#undef XFERMODE
// A reasonable fallback mode for doing AA is to simply apply the transfermode first,
@ -184,15 +116,6 @@ namespace SK_OPTS_NS {
CASE(Plus);
CASE(Modulate);
CASE(Screen);
#if defined(SK_LEGACY_COMPLEX_XFERMODES)
CASE(Multiply);
CASE(Difference);
CASE(Exclusion);
CASE(HardLight);
CASE(Overlay);
CASE(Darken);
CASE(Lighten);
#endif
#undef CASE
default: break;