1 files changed, 66 insertions, 0 deletions
diff --git a/chromium/third_party/skia/bench/PremulAndUnpremulAlphaOpsBench.cpp b/chromium/third_party/skia/bench/PremulAndUnpremulAlphaOpsBench.cpp
new file mode 100644
index 00000000000..311bdf2d477
--- /dev/null
+++ b/chromium/third_party/skia/bench/PremulAndUnpremulAlphaOpsBench.cpp
@@ -0,0 +1,66 @@
+/*
+ * 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 "SkCanvas.h"
+#include "SkConfig8888.h"
+#include "SkString.h"
+#include "sk_tool_utils.h"
+
+class PremulAndUnpremulAlphaOpsBench : public Benchmark {
+    enum {
+        W = 256,
+        H = 256,
+    };
+    SkBitmap fBmp1, fBmp2;
+
+public:
+    PremulAndUnpremulAlphaOpsBench(SkColorType ct) {
+        fColorType = ct;
+        fName.printf("premul_and_unpremul_alpha_%s", sk_tool_utils::colortype_name(ct));
+    }
+
+protected:
+    virtual const char* onGetName() SK_OVERRIDE {
+        return fName.c_str();
+    }
+
+    virtual void onPreDraw() {
+        SkImageInfo info = SkImageInfo::Make(W, H, fColorType, kPremul_SkAlphaType);
+        fBmp1.allocPixels(info);   // used in writePixels
+
+        for (int h = 0; h < H; ++h) {
+            for (int w = 0; w < W; ++w) {
+                // SkColor places A in the right slot for either RGBA or BGRA
+                *fBmp1.getAddr32(w, h) = SkColorSetARGB(h & 0xFF, w & 0xFF, w & 0xFF, w & 0xFF);
+            }
+        }
+
+        fBmp2.allocPixels(info);    // used in readPixels()
+    }
+
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+        canvas->clear(SK_ColorBLACK);
+
+        for (int loop = 0; loop < loops; ++loop) {
+            // Unpremul -> Premul
+            canvas->writePixels(fBmp1.info(), fBmp1.getPixels(), fBmp1.rowBytes(), 0, 0);
+            // Premul -> Unpremul
+            canvas->readPixels(fBmp2.info(), fBmp2.getPixels(), fBmp2.rowBytes(), 0, 0);
+        }
+    }
+
+private:
+    SkColorType fColorType;
+    SkString fName;
+
+    typedef Benchmark INHERITED;
+};
+
+
+DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(kRGBA_8888_SkColorType));
+DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(kBGRA_8888_SkColorType));