skia2/bench/ShaderMaskBench.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

108 lines
3.1 KiB
C++

/*
* 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 "SkColorShader.h"
#include "SkFontHost.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkString.h"
#include "SkTemplates.h"
#define STR "Hamburgefons"
enum FontQuality {
kBW,
kAA,
kLCD
};
static const char* fontQualityName(const SkPaint& paint) {
if (!paint.isAntiAlias()) {
return "BW";
}
if (paint.isLCDRenderText()) {
return "LCD";
}
return "AA";
}
class ShaderMaskBench : public SkBenchmark {
SkPaint fPaint;
SkString fText;
SkString fName;
FontQuality fFQ;
enum { N = SkBENCHLOOP(500) };
public:
ShaderMaskBench(void* param, bool isOpaque, FontQuality fq) : INHERITED(param) {
fFQ = fq;
fText.set(STR);
fPaint.setAntiAlias(kBW != fq);
fPaint.setLCDRenderText(kLCD == fq);
fPaint.setAlpha(isOpaque ? 0xFF : 0x80);
fPaint.setShader(new SkColorShader)->unref();
}
protected:
virtual const char* onGetName() {
fName.printf("shadermask");
fName.appendf("_%s", fontQualityName(fPaint));
fName.appendf("_%02X", fPaint.getAlpha());
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
const SkIPoint dim = this->getSize();
SkRandom rand;
SkPaint paint(fPaint);
this->setupPaint(&paint);
// explicitly need these
paint.setAlpha(fPaint.getAlpha());
paint.setAntiAlias(kBW != fFQ);
paint.setLCDRenderText(kLCD == fFQ);
const SkScalar x0 = SkIntToScalar(-10);
const SkScalar y0 = SkIntToScalar(-10);
paint.setTextSize(SkIntToScalar(12));
for (int i = 0; i < N; i++) {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
}
paint.setTextSize(SkIntToScalar(48));
for (int i = 0; i < N/4; i++) {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkBenchmark* Fact00(void* p) { return new ShaderMaskBench(p, true, kBW); }
static SkBenchmark* Fact01(void* p) { return new ShaderMaskBench(p, false, kBW); }
static SkBenchmark* Fact10(void* p) { return new ShaderMaskBench(p, true, kAA); }
static SkBenchmark* Fact11(void* p) { return new ShaderMaskBench(p, false, kAA); }
static SkBenchmark* Fact20(void* p) { return new ShaderMaskBench(p, true, kLCD); }
static SkBenchmark* Fact21(void* p) { return new ShaderMaskBench(p, false, kLCD); }
static BenchRegistry gReg00(Fact00);
static BenchRegistry gReg01(Fact01);
static BenchRegistry gReg10(Fact10);
static BenchRegistry gReg11(Fact11);
static BenchRegistry gReg20(Fact20);
static BenchRegistry gReg21(Fact21);