Add a bench for picture playback.
Review URL: https://codereview.appspot.com/5694053
git-svn-id: http://skia.googlecode.com/svn/trunk@3245 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/PicturePlaybackBench.cpp b/bench/PicturePlaybackBench.cpp
new file mode 100644
index 0000000..426ecde
--- /dev/null
+++ b/bench/PicturePlaybackBench.cpp
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "SkBenchmark.h"
+#include "SkCanvas.h"
+#include "SkColor.h"
+#include "SkPaint.h"
+#include "SkPicture.h"
+#include "SkPoint.h"
+#include "SkRect.h"
+#include "SkString.h"
+
+// This is designed to emulate about 4 screens of textual content
+
+
+class PicturePlaybackBench : public SkBenchmark {
+public:
+ PicturePlaybackBench(void* param, const char name[]) : INHERITED(param) {
+ fName.printf("picture_playback_%s", name);
+ fPictureWidth = SkIntToScalar(PICTURE_WIDTH);
+ fPictureHeight = SkIntToScalar(PICTURE_HEIGHT);
+ fTextSize = SkIntToScalar(TEXT_SIZE);
+ }
+
+ enum {
+ N = SkBENCHLOOP(1000), // number of times to playback the picture
+ PICTURE_WIDTH = 1000,
+ PICTURE_HEIGHT = 4000,
+ TEXT_SIZE = 10
+ };
+protected:
+ virtual const char* onGetName() {
+ return fName.c_str();
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+
+ SkPicture picture;
+
+ SkCanvas* pCanvas = picture.beginRecording(PICTURE_WIDTH, PICTURE_HEIGHT);
+ recordCanvas(pCanvas);
+ picture.endRecording();
+
+ const SkPoint translateDelta = getTranslateDelta();
+
+ for (int i = 0; i < N; i++) {
+ picture.draw(canvas);
+ canvas->translate(translateDelta.fX, translateDelta.fY);
+ }
+ }
+
+ virtual void recordCanvas(SkCanvas* canvas) = 0;
+ virtual SkPoint getTranslateDelta() {
+ SkIPoint canvasSize = onGetSize();
+ return SkPoint::Make(SkIntToScalar((PICTURE_WIDTH - canvasSize.fX)/N),
+ SkIntToScalar((PICTURE_HEIGHT- canvasSize.fY)/N));
+ }
+
+ SkString fName;
+ SkScalar fPictureWidth;
+ SkScalar fPictureHeight;
+ SkScalar fTextSize;
+private:
+ typedef SkBenchmark INHERITED;
+};
+
+
+class TextPlaybackBench : public PicturePlaybackBench {
+public:
+ TextPlaybackBench(void* param) : INHERITED(param, "drawText") { }
+protected:
+ virtual void recordCanvas(SkCanvas* canvas) {
+ SkPaint paint;
+ paint.setTextSize(fTextSize);
+ paint.setColor(SK_ColorBLACK);
+
+ const char* text = "Hamburgefons";
+ size_t len = strlen(text);
+ const SkScalar textWidth = paint.measureText(text, len);
+
+ for (SkScalar x = 0; x < fPictureWidth; x += textWidth) {
+ for (SkScalar y = 0; y < fPictureHeight; y += fTextSize) {
+ canvas->drawText(text, len, x, y, paint);
+ }
+ }
+ }
+private:
+ typedef PicturePlaybackBench INHERITED;
+};
+
+class PosTextPlaybackBench : public PicturePlaybackBench {
+public:
+ PosTextPlaybackBench(void* param, bool drawPosH)
+ : fDrawPosH(drawPosH)
+ , INHERITED(param, drawPosH ? "drawPosTextH" : "drawPosText") { }
+protected:
+ virtual void recordCanvas(SkCanvas* canvas) {
+ SkPaint paint;
+ paint.setTextSize(fTextSize);
+ paint.setColor(SK_ColorBLACK);
+
+ const char* text = "Hamburgefons";
+ size_t len = strlen(text);
+ const SkScalar textWidth = paint.measureText(text, len);
+
+ SkScalar* adv = new SkScalar[len];
+ paint.getTextWidths(text, len, adv);
+
+ for (SkScalar x = 0; x < fPictureWidth; x += textWidth) {
+ for (SkScalar y = 0; y < fPictureHeight; y += fTextSize) {
+
+ SkPoint* pos = new SkPoint[len];
+ SkScalar advX = 0;
+
+ for (size_t i = 0; i < len; i++) {
+ if (fDrawPosH)
+ pos[i].set(x + advX, y);
+ else
+ pos[i].set(x + advX, y + SkIntToScalar(i));
+ advX += adv[i];
+ }
+
+ canvas->drawPosText(text, len, pos, paint);
+ delete[] pos;
+ }
+ }
+ delete[] adv;
+ }
+private:
+ bool fDrawPosH;
+ typedef PicturePlaybackBench INHERITED;
+};
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+static SkBenchmark* Fact0(void* p) { return new TextPlaybackBench(p); }
+static SkBenchmark* Fact1(void* p) { return new PosTextPlaybackBench(p, true); }
+static SkBenchmark* Fact2(void* p) { return new PosTextPlaybackBench(p, false); }
+
+static BenchRegistry gReg0(Fact0);
+static BenchRegistry gReg1(Fact1);
+static BenchRegistry gReg2(Fact2);
+
diff --git a/gyp/bench.gypi b/gyp/bench.gypi
index 5fbfef7..2ea3660 100644
--- a/gyp/bench.gypi
+++ b/gyp/bench.gypi
@@ -28,6 +28,7 @@
'../bench/MatrixBench.cpp',
'../bench/MutexBench.cpp',
'../bench/PathBench.cpp',
+ '../bench/PicturePlaybackBench.cpp',
'../bench/RectBench.cpp',
'../bench/RepeatTileBench.cpp',
'../bench/ScalarBench.cpp',