1 files changed, 106 insertions, 0 deletions
diff --git a/chromium/third_party/skia/bench/DeferredCanvasBench.cpp b/chromium/third_party/skia/bench/DeferredCanvasBench.cpp
new file mode 100644
index 00000000000..667895c22f7
--- /dev/null
+++ b/chromium/third_party/skia/bench/DeferredCanvasBench.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2012 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 "SkDeferredCanvas.h"
+#include "SkDevice.h"
+#include "SkString.h"
+
+class DeferredCanvasBench : public Benchmark {
+public:
+    DeferredCanvasBench(const char name[])  {
+        fName.printf("deferred_canvas_%s", name);
+    }
+
+    enum {
+        CANVAS_WIDTH = 200,
+        CANVAS_HEIGHT = 200,
+    };
+protected:
+    virtual const char* onGetName() {
+        return fName.c_str();
+    }
+
+    virtual void onDraw(const int loops, SkCanvas* canvas) {
+#if 0   // what specifically are we interested in timing here?
+        SkBaseDevice *device = canvas->getDevice()->createCompatibleDevice(
+            SkBitmap::kARGB_8888_Config, CANVAS_WIDTH, CANVAS_HEIGHT, false);
+
+        SkAutoTUnref<SkDeferredCanvas> deferredCanvas(SkDeferredCanvas::Create(device));
+        device->unref();
+
+        initDeferredCanvas(deferredCanvas);
+        drawInDeferredCanvas(loops, deferredCanvas);
+        finalizeDeferredCanvas(deferredCanvas);
+        deferredCanvas->flush();
+#endif
+    }
+
+    virtual void initDeferredCanvas(SkDeferredCanvas* canvas) = 0;
+    virtual void drawInDeferredCanvas(const int loops, SkDeferredCanvas* canvas) = 0;
+    virtual void finalizeDeferredCanvas(SkDeferredCanvas* canvas) = 0;
+
+    SkString fName;
+
+private:
+    typedef Benchmark INHERITED;
+};
+
+class SimpleNotificationClient : public SkDeferredCanvas::NotificationClient {
+public:
+    SimpleNotificationClient() : fDummy(false) {}
+
+    //bogus virtual implementations that just do something small
+    virtual void prepareForDraw() SK_OVERRIDE {fDummy = true;}
+    virtual void storageAllocatedForRecordingChanged(size_t) SK_OVERRIDE {fDummy = false;}
+    virtual void flushedDrawCommands() SK_OVERRIDE {fDummy = !fDummy;}
+private:
+    bool fDummy;
+
+    typedef SkDeferredCanvas::NotificationClient INHERITED;
+};
+
+// Test that records very simple draw operations.
+// This benchmark aims to capture performance fluctuations in the recording
+// overhead of SkDeferredCanvas
+class DeferredRecordBench : public DeferredCanvasBench {
+public:
+    DeferredRecordBench()
+        : INHERITED("record") {
+    }
+
+protected:
+
+    virtual void initDeferredCanvas(SkDeferredCanvas* canvas) SK_OVERRIDE {
+        canvas->setNotificationClient(&fNotificationClient);
+    }
+
+    virtual void drawInDeferredCanvas(const int loops, SkDeferredCanvas* canvas) SK_OVERRIDE {
+        SkRect rect;
+        rect.setXYWH(0, 0, 10, 10);
+        SkPaint paint;
+        for (int i = 0; i < loops; i++) {
+            canvas->save();
+            canvas->translate(SkIntToScalar(i * 27 % CANVAS_WIDTH), SkIntToScalar(i * 13 % CANVAS_HEIGHT));
+            canvas->drawRect(rect, paint);
+            canvas->restore();
+        }
+    }
+
+    virtual void finalizeDeferredCanvas(SkDeferredCanvas* canvas) SK_OVERRIDE {
+        canvas->clear(0x0);
+        canvas->setNotificationClient(NULL);
+    }
+
+private:
+    typedef DeferredCanvasBench INHERITED;
+    SimpleNotificationClient fNotificationClient;
+};
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+DEF_BENCH( return new DeferredRecordBench(); )