skia2/bench/LineBench.cpp
commit-bot@chromium.org e0e7cfe44b Change old PRG to be SkLCGRandom; change new one to SkRandom
The goal here is to get people to start using the new random number
generator, while leaving the old one in place so we don't have to 
rebaseline GMs.

R=reed@google.com, bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://chromiumcodereview.appspot.com/23576015

git-svn-id: http://skia.googlecode.com/svn/trunk@11169 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-09-09 20:09:12 +00:00

68 lines
1.7 KiB
C++

/*
* 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 "SkBenchmark.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkShader.h"
#include "SkString.h"
#include "SkTArray.h"
class LineBench : public SkBenchmark {
SkScalar fStrokeWidth;
bool fDoAA;
SkString fName;
enum {
PTS = 500,
N = SkBENCHLOOP(10)
};
SkPoint fPts[PTS];
public:
LineBench(void* param, SkScalar width, bool doAA) : INHERITED(param) {
fStrokeWidth = width;
fDoAA = doAA;
fName.printf("lines_%g_%s", width, doAA ? "AA" : "BW");
SkRandom rand;
for (int i = 0; i < PTS; ++i) {
fPts[i].set(rand.nextUScalar1() * 640, rand.nextUScalar1() * 480);
}
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint paint;
this->setupPaint(&paint);
paint.setStyle(SkPaint::kStroke_Style);
paint.setAntiAlias(fDoAA);
paint.setStrokeWidth(fStrokeWidth);
for (int i = 0; i < N; i++) {
canvas->drawPoints(SkCanvas::kLines_PointMode, PTS, fPts, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
DEF_BENCH(return new LineBench(p, 0, false);)
DEF_BENCH(return new LineBench(p, SK_Scalar1, false);)
DEF_BENCH(return new LineBench(p, 0, true);)
DEF_BENCH(return new LineBench(p, SK_Scalar1/2, true);)
DEF_BENCH(return new LineBench(p, SK_Scalar1, true);)