update blendmode bench

Bug: skia:
Change-Id: Id47fedd9e346035af0f14b9a9c171c79eec0d9cd
Reviewed-on: https://skia-review.googlesource.com/21407
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>

1 files changed, 106 insertions, 0 deletions

diff --git a/bench/BlendmodeBench.cpp b/bench/BlendmodeBench.cpp
new file mode 100644
index 0000000000..d38807a208
--- /dev/null
+++ b/bench/BlendmodeBench.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Benchmark.h"
+#include "SkBlendModePriv.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkRandom.h"
+#include "SkString.h"
+
+// Benchmark that draws non-AA rects or AA text with an SkXfermode::Mode.
+class XfermodeBench : public Benchmark {
+public:
+    XfermodeBench(SkBlendMode mode, bool aa) : fBlendMode(mode) {
+        fAA = aa;
+        fName.printf("blendmode_%s_%s", aa ? "mask" : "rect", SkBlendMode_Name(mode));
+    }
+
+protected:
+    const char* onGetName() override { return fName.c_str(); }
+
+    void onDraw(int loops, SkCanvas* canvas) override {
+        const char* text = "Hamburgefons";
+        size_t len = strlen(text);
+        SkISize size = canvas->getBaseLayerSize();
+        SkRandom random;
+        for (int i = 0; i < loops; ++i) {
+            SkPaint paint;
+            paint.setBlendMode(fBlendMode);
+            paint.setColor(random.nextU());
+            if (fAA) {
+                // Draw text to exercise AA code paths.
+                paint.setAntiAlias(true);
+                paint.setTextSize(random.nextRangeScalar(12, 96));
+                SkScalar x = random.nextRangeScalar(0, (SkScalar)size.fWidth),
+                         y = random.nextRangeScalar(0, (SkScalar)size.fHeight);
+                for (int j = 0; j < 1000; ++j) {
+                    canvas->drawText(text, len, x, y, paint);
+                }
+            } else {
+                // Draw rects to exercise non-AA code paths.
+                SkScalar w = random.nextRangeScalar(50, 100);
+                SkScalar h = random.nextRangeScalar(50, 100);
+                SkRect rect = SkRect::MakeXYWH(
+                    random.nextUScalar1() * (size.fWidth - w),
+                    random.nextUScalar1() * (size.fHeight - h),
+                    w,
+                    h
+                );
+                for (int j = 0; j < 1000; ++j) {
+                    canvas->drawRect(rect, paint);
+                }
+            }
+        }
+    }
+
+private:
+    SkBlendMode fBlendMode;
+    SkString    fName;
+    bool        fAA;
+
+    typedef Benchmark INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+#define BENCH(...)                                             \
+    DEF_BENCH( return new XfermodeBench(__VA_ARGS__, true); )  \
+    DEF_BENCH( return new XfermodeBench(__VA_ARGS__, false); )
+
+BENCH(SkBlendMode::kClear)
+BENCH(SkBlendMode::kSrc)
+BENCH(SkBlendMode::kDst)
+BENCH(SkBlendMode::kSrcOver)
+BENCH(SkBlendMode::kDstOver)
+BENCH(SkBlendMode::kSrcIn)
+BENCH(SkBlendMode::kDstIn)
+BENCH(SkBlendMode::kSrcOut)
+BENCH(SkBlendMode::kDstOut)
+BENCH(SkBlendMode::kSrcATop)
+BENCH(SkBlendMode::kDstATop)
+BENCH(SkBlendMode::kXor)
+
+BENCH(SkBlendMode::kPlus)
+BENCH(SkBlendMode::kModulate)
+BENCH(SkBlendMode::kScreen)
+
+BENCH(SkBlendMode::kOverlay)
+BENCH(SkBlendMode::kDarken)
+BENCH(SkBlendMode::kLighten)
+BENCH(SkBlendMode::kColorDodge)
+BENCH(SkBlendMode::kColorBurn)
+BENCH(SkBlendMode::kHardLight)
+BENCH(SkBlendMode::kSoftLight)
+BENCH(SkBlendMode::kDifference)
+BENCH(SkBlendMode::kExclusion)
+BENCH(SkBlendMode::kMultiply)
+
+BENCH(SkBlendMode::kHue)
+BENCH(SkBlendMode::kSaturation)
+BENCH(SkBlendMode::kColor)
+BENCH(SkBlendMode::kLuminosity)