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/*
* 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 "SkCanvas.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkString.h"
// This bench simulates the calls Skia sees from various HTML5 canvas
// game bench marks
class GameBench : public SkBenchmark {
public:
enum Type {
kScale_Type,
kTranslate_Type,
kRotate_Type
};
GameBench(void* param, Type type, bool partialClear, bool aligned = false)
: INHERITED(param)
, fType(type)
, fPartialClear(partialClear)
, fAligned(aligned)
, fName("game")
, fNumSaved(0)
, fInitialized(false) {
switch (fType) {
case kScale_Type:
fName.append("_scale");
break;
case kTranslate_Type:
fName.append("_trans");
break;
case kRotate_Type:
fName.append("_rot");
break;
};
if (aligned) {
fName.append("_aligned");
}
if (partialClear) {
fName.append("_partial");
} else {
fName.append("_full");
}
// It's HTML 5 canvas, so always AA
fName.append("_aa");
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();;
}
virtual void onPreDraw() SK_OVERRIDE {
if (!fInitialized) {
this->makeCheckerboard();
fInitialized = true;
}
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
static SkMWCRandom scaleRand;
static SkMWCRandom transRand;
static SkMWCRandom rotRand;
SkPaint clearPaint;
clearPaint.setColor(0xFF000000);
clearPaint.setAntiAlias(true);
SkISize size = canvas->getDeviceSize();
SkScalar maxTransX, maxTransY;
if (kScale_Type == fType) {
maxTransX = size.fWidth - (1.5f * kCheckerboardWidth);
maxTransY = size.fHeight - (1.5f * kCheckerboardHeight);
} else if (kTranslate_Type == fType) {
maxTransX = SkIntToScalar(size.fWidth - kCheckerboardWidth);
maxTransY = SkIntToScalar(size.fHeight - kCheckerboardHeight);
} else {
SkASSERT(kRotate_Type == fType);
// Yes, some rotations will be off the top and left sides
maxTransX = size.fWidth - SK_ScalarSqrt2 * kCheckerboardHeight;
maxTransY = size.fHeight - SK_ScalarSqrt2 * kCheckerboardHeight;
}
SkMatrix mat;
SkIRect src = { 0, 0, kCheckerboardWidth, kCheckerboardHeight };
SkRect dst = { 0, 0, kCheckerboardWidth, kCheckerboardHeight };
SkRect clearRect = { -1.0f, -1.0f,
kCheckerboardWidth+1.0f, kCheckerboardHeight+1.0f };
SkPaint p;
p.setColor(0xFF000000);
p.setFilterBitmap(true);
for (int i = 0; i < kNumRects; ++i, ++fNumSaved) {
if (0 == i % kNumBeforeClear) {
if (fPartialClear) {
for (int j = 0; j < fNumSaved; ++j) {
canvas->setMatrix(SkMatrix::I());
mat.setTranslate(fSaved[j][0], fSaved[j][1]);
if (kScale_Type == fType) {
mat.preScale(fSaved[j][2], fSaved[j][2]);
} else if (kRotate_Type == fType) {
mat.preRotate(fSaved[j][2]);
}
canvas->concat(mat);
canvas->drawRect(clearRect, clearPaint);
}
} else {
canvas->clear(0xFF000000);
}
fNumSaved = 0;
}
SkASSERT(fNumSaved < kNumBeforeClear);
canvas->setMatrix(SkMatrix::I());
fSaved[fNumSaved][0] = transRand.nextRangeScalar(0.0f, maxTransX);
fSaved[fNumSaved][1] = transRand.nextRangeScalar(0.0f, maxTransY);
if (fAligned) {
// make the translations integer aligned
fSaved[fNumSaved][0] = SkScalarFloorToScalar(fSaved[fNumSaved][0]);
fSaved[fNumSaved][1] = SkScalarFloorToScalar(fSaved[fNumSaved][1]);
}
mat.setTranslate(fSaved[fNumSaved][0], fSaved[fNumSaved][1]);
if (kScale_Type == fType) {
fSaved[fNumSaved][2] = scaleRand.nextRangeScalar(0.5f, 1.5f);
mat.preScale(fSaved[fNumSaved][2], fSaved[fNumSaved][2]);
} else if (kRotate_Type == fType) {
fSaved[fNumSaved][2] = rotRand.nextRangeScalar(0.0f, 360.0f);
mat.preRotate(fSaved[fNumSaved][2]);
}
canvas->concat(mat);
canvas->drawBitmapRect(fCheckerboard, &src, dst, &p);
}
}
private:
static const int kCheckerboardWidth = 64;
static const int kCheckerboardHeight = 128;
#ifdef SK_DEBUG
static const int kNumRects = 100;
static const int kNumBeforeClear = 10;
#else
static const int kNumRects = 5000;
static const int kNumBeforeClear = 300;
#endif
Type fType;
bool fPartialClear;
bool fAligned;
SkString fName;
int fNumSaved; // num draws stored in 'fSaved'
bool fInitialized;
// 0 & 1 are always x & y translate. 2 is either scale or rotate.
SkScalar fSaved[kNumBeforeClear][3];
SkBitmap fCheckerboard;
// Note: the resulting checker board has transparency
void makeCheckerboard() {
static int kCheckSize = 16;
fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config,
kCheckerboardWidth, kCheckerboardHeight);
fCheckerboard.allocPixels();
SkAutoLockPixels lock(fCheckerboard);
for (int y = 0; y < kCheckerboardHeight; ++y) {
int even = (y / kCheckSize) % 2;
SkPMColor* scanline = fCheckerboard.getAddr32(0, y);
for (int x = 0; x < kCheckerboardWidth; ++x) {
if (even == (x / kCheckSize) % 2) {
*scanline++ = 0xFFFF0000;
} else {
*scanline++ = 0x00000000;
}
}
}
}
typedef SkBenchmark INHERITED;
};
// Partial clear
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kScale_Type, false)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kTranslate_Type, false)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kTranslate_Type, false, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kRotate_Type, false)); )
// Full clear
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kScale_Type, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kTranslate_Type, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kTranslate_Type, true, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (p, GameBench::kRotate_Type, true)); )
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