lots of sRGB and F16 blits

- generalize F16 xfermode procs
- spriteblits for F16 and sRGB
- saveLayer now respects colortype and profiletype

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1686013002

Review URL: https://codereview.chromium.org/1685203002

1 files changed, 10 insertions, 1 deletions

diff --git a/src/core/SkXfermode.cpp b/src/core/SkXfermode.cpp
index 7f89327703..7002e9a533 100644
--- a/src/core/SkXfermode.cpp
+++ b/src/core/SkXfermode.cpp
@@ -95,7 +95,7 @@ static Sk4f overlay_4f(const Sk4f& s, const Sk4f& d) {
     Sk4f two = Sk4f(2);
     Sk4f rc = (two * d <= da).thenElse(two * s * d,
                                        sa * da - two * (da - d) * (sa - s));
-    return s + d - s * da + color_alpha(rc - d * sa, 0);
+    return pin_1(s + d - s * da + color_alpha(rc - d * sa, 0));
 }
 
 static Sk4f hardlight_4f(const Sk4f& s, const Sk4f& d) {
@@ -1343,6 +1343,15 @@ SkXfermodeProc4f SkXfermode::GetProc4f(Mode mode) {
     return proc;
 }
 
+static SkPM4f missing_proc4f(const SkPM4f& src, const SkPM4f& dst) {
+    return src;
+}
+
+SkXfermodeProc4f SkXfermode::getProc4f() const {
+    Mode mode;
+    return this->asMode(&mode) ? GetProc4f(mode) : missing_proc4f;
+}
+
 bool SkXfermode::ModeAsCoeff(Mode mode, Coeff* src, Coeff* dst) {
     SkASSERT(SK_ARRAY_COUNT(gProcCoeffs) == kModeCount);