Implement AnalyticAA for convex shapes.

Design doc: go/analyticAA

A performance test can be found here: https://docs.google.com/a/google.com/spreadsheets/d/1n9LSjFzrQzx0hovFddWey0GSMXNRjl1oFuSypMlHWZk/edit?usp=sharing

Our best case is filling big triangles, which according to our experiment has ~2.9x speedup. Our worst case is filling small ovals/circles, which has a ~1.06x slowdown.

To see how our new algorithm changes the DM images, see: https://x20web.corp.google.com/~liyuqian/dmdiff/index.html
The most significant changes are in convexpaths and analytic_antialias_convex

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2221103002

Review-Url: https://codereview.chromium.org/2221103002

1 files changed, 7 insertions, 0 deletions

diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 433cfa89d9..07486d29a3 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -44,6 +44,7 @@
 #include "SkTaskGroup.h"
 #include "SkThreadUtils.h"
 #include "ThermalManager.h"
+#include "SkScan.h"
 
 #include <stdlib.h>
 
@@ -127,6 +128,8 @@ DEFINE_string(sourceType, "",
 DEFINE_string(benchType,  "",
         "Apply usual --match rules to bench type: micro, recording, playback, skcodec, etc.");
 
+DEFINE_bool(analyticAA, false, "Analytic Anati-Alias");
+
 static double now_ms() { return SkTime::GetNSecs() * 1e-6; }
 
 static SkString humanize(double ms) {
@@ -1178,6 +1181,10 @@ int nanobench_main() {
         start_keepalive();
     }
 
+    if (FLAGS_analyticAA) {
+        GlobalAAConfig::getInstance().fUseAnalyticAA = true;
+    }
+
     int runs = 0;
     BenchmarkStream benchStream;
     while (Benchmark* b = benchStream.next()) {