/*
* 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 "SkBitmap.h"
#include "SkCanvas.h"
#include "SkDashPathEffect.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkString.h"
#include "SkTDArray.h"
/*
* Cases to consider:
*
* 1. antialiasing on/off (esp. width <= 1)
* 2. strokewidth == 0, 1, 2
* 3. hline, vline, diagonal, rect, oval
* 4. dots [1,1] ([N,N] where N=strokeWidth?) or arbitrary (e.g. [2,1] or [1,2,3,2])
*/
static void path_hline(SkPath* path) {
path->moveTo(SkIntToScalar(10), SkIntToScalar(10));
path->lineTo(SkIntToScalar(600), SkIntToScalar(10));
}
class DashBench : public SkBenchmark {
protected:
SkString fName;
SkTDArray<SkScalar> fIntervals;
int fWidth;
SkPoint fPts[2];
bool fDoClip;
enum {
N = SkBENCHLOOP(100)
};
public:
DashBench(void* param, const SkScalar intervals[], int count, int width,
bool doClip = false) : INHERITED(param) {
fIntervals.append(count, intervals);
for (int i = 0; i < count; ++i) {
fIntervals[i] *= width;
}
fWidth = width;
fName.printf("dash_%d_%s", width, doClip ? "clipped" : "noclip");
fDoClip = doClip;
fPts[0].set(SkIntToScalar(10), SkIntToScalar(10));
fPts[1].set(SkIntToScalar(600), SkIntToScalar(10));
}
virtual void makePath(SkPath* path) {
path_hline(path);
}
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.setStrokeWidth(SkIntToScalar(fWidth));
paint.setAntiAlias(false);
SkPath path;
this->makePath(&path);
paint.setPathEffect(new SkDashPathEffect(fIntervals.begin(),
fIntervals.count(), 0))->unref();
if (fDoClip) {
SkRect r = path.getBounds();
r.inset(-SkIntToScalar(20), -SkIntToScalar(20));
// now move it so we don't intersect
r.offset(0, r.height() * 3 / 2);
canvas->clipRect(r);
}
this->handlePath(canvas, path, paint, N);
}
virtual void handlePath(SkCanvas* canvas, const SkPath& path,
const SkPaint& paint, int N) {
for (int i = 0; i < N; ++i) {
// canvas->drawPoints(SkCanvas::kLines_PointMode, 2, fPts, paint);
canvas->drawPath(path, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
class RectDashBench : public DashBench {
public:
RectDashBench(void* param, const SkScalar intervals[], int count, int width, bool doClip = false)
: INHERITED(param, intervals, count, width) {
fName.append("_rect");
}
protected:
virtual void handlePath(SkCanvas* canvas, const SkPath& path,
const SkPaint& paint, int N) SK_OVERRIDE {
SkPoint pts[2];
if (!path.isLine(pts) || pts[0].fY != pts[1].fY) {
this->INHERITED::handlePath(canvas, path, paint, N);
} else {
SkRect rect;
rect.fLeft = pts[0].fX;
rect.fTop = pts[0].fY - paint.getStrokeWidth() / 2;
rect.fRight = rect.fLeft + SkIntToScalar(fWidth);
rect.fBottom = rect.fTop + paint.getStrokeWidth();
SkPaint p(paint);
p.setStyle(SkPaint::kFill_Style);
p.setPathEffect(NULL);
int count = SkScalarRoundToInt((pts[1].fX - pts[0].fX) / (2*fWidth));
SkScalar dx = SkIntToScalar(2 * fWidth);
for (int i = 0; i < N*10; ++i) {
SkRect r = rect;
for (int j = 0; j < count; ++j) {
canvas->drawRect(r, p);
r.offset(dx, 0);
}
}
}
}
private:
typedef DashBench INHERITED;
};
static void make_unit_star(SkPath* path, int n) {
SkScalar rad = -SK_ScalarPI / 2;
const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n;
path->moveTo(0, -SK_Scalar1);
for (int i = 1; i < n; i++) {
rad += drad;
SkScalar cosV, sinV = SkScalarSinCos(rad, &cosV);
path->lineTo(cosV, sinV);
}
path->close();
}
static void make_poly(SkPath* path) {
make_unit_star(path, 9);
SkMatrix matrix;
matrix.setScale(SkIntToScalar(100), SkIntToScalar(100));
path->transform(matrix);
}
static void make_quad(SkPath* path) {
SkScalar x0 = SkIntToScalar(10);
SkScalar y0 = SkIntToScalar(10);
path->moveTo(x0, y0);
path->quadTo(x0, y0 + 400 * SK_Scalar1,
x0 + 600 * SK_Scalar1, y0 + 400 * SK_Scalar1);
}
static void make_cubic(SkPath* path) {
SkScalar x0 = SkIntToScalar(10);
SkScalar y0 = SkIntToScalar(10);
path->moveTo(x0, y0);
path->cubicTo(x0, y0 + 400 * SK_Scalar1,
x0 + 600 * SK_Scalar1, y0 + 400 * SK_Scalar1,
x0 + 600 * SK_Scalar1, y0);
}
class MakeDashBench : public SkBenchmark {
SkString fName;
SkPath fPath;
SkAutoTUnref<SkPathEffect> fPE;
enum {
N = SkBENCHLOOP(400)
};
public:
MakeDashBench(void* param, void (*proc)(SkPath*), const char name[]) : INHERITED(param) {
fName.printf("makedash_%s", name);
proc(&fPath);
SkScalar vals[] = { SkIntToScalar(4), SkIntToScalar(4) };
fPE.reset(new SkDashPathEffect(vals, 2, 0));
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPath dst;
for (int i = 0; i < N; ++i) {
SkStrokeRec rec(SkStrokeRec::kHairline_InitStyle);
fPE->filterPath(&dst, fPath, &rec, NULL);
dst.rewind();
}
}
private:
typedef SkBenchmark INHERITED;
};
/*
* We try to special case square dashes (intervals are equal to strokewidth).
*/
class DashLineBench : public SkBenchmark {
SkString fName;
SkScalar fStrokeWidth;
bool fIsRound;
SkAutoTUnref<SkPathEffect> fPE;
enum {
N = SkBENCHLOOP(200)
};
public:
DashLineBench(void* param, SkScalar width, bool isRound) : INHERITED(param) {
fName.printf("dashline_%g_%s", SkScalarToFloat(width), isRound ? "circle" : "square");
fStrokeWidth = width;
fIsRound = isRound;
SkScalar vals[] = { SK_Scalar1, SK_Scalar1 };
fPE.reset(new SkDashPathEffect(vals, 2, 0));
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint paint;
this->setupPaint(&paint);
paint.setStrokeWidth(fStrokeWidth);
paint.setStrokeCap(fIsRound ? SkPaint::kRound_Cap : SkPaint::kSquare_Cap);
paint.setPathEffect(fPE);
for (int i = 0; i < N; ++i) {
canvas->drawLine(10 * SK_Scalar1, 10 * SK_Scalar1,
640 * SK_Scalar1, 10 * SK_Scalar1, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
class DrawPointsDashingBench : public SkBenchmark {
SkString fName;
int fStrokeWidth;
bool fDoAA;
SkAutoTUnref<SkPathEffect> fPathEffect;
enum {
N = SkBENCHLOOP(480)
};
public:
DrawPointsDashingBench(void* param, int dashLength, int strokeWidth, bool doAA)
: INHERITED(param) {
fName.printf("drawpointsdash_%d_%d%s", dashLength, strokeWidth, doAA ? "_aa" : "_bw");
fStrokeWidth = strokeWidth;
fDoAA = doAA;
SkScalar vals[] = { SkIntToScalar(dashLength), SkIntToScalar(dashLength) };
fPathEffect.reset(new SkDashPathEffect(vals, 2, SK_Scalar1, false));
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint p;
this->setupPaint(&p);
p.setColor(SK_ColorBLACK);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SkIntToScalar(fStrokeWidth));
p.setPathEffect(fPathEffect);
p.setAntiAlias(fDoAA);
SkPoint pts[2] = {
{ SkIntToScalar(10), 0 },
{ SkIntToScalar(640), 0 }
};
for (int i = 0; i < N; ++i) {
pts[0].fY = pts[1].fY = SkIntToScalar(i % 480);
canvas->drawPoints(SkCanvas::kLines_PointMode, 2, pts, p);
}
}
private:
typedef SkBenchmark INHERITED;
};
// Want to test how we handle dashing when 99% of the dash is clipped out
class GiantDashBench : public SkBenchmark {
SkString fName;
SkScalar fStrokeWidth;
SkPoint fPts[2];
SkAutoTUnref<SkPathEffect> fPathEffect;
public:
enum LineType {
kHori_LineType,
kVert_LineType,
kDiag_LineType
};
static const char* LineTypeName(LineType lt) {
static const char* gNames[] = { "hori", "vert", "diag" };
SkASSERT((size_t)lt <= SK_ARRAY_COUNT(gNames));
return gNames[lt];
}
GiantDashBench(void* param, LineType lt, SkScalar width) : INHERITED(param) {
fName.printf("giantdashline_%s_%g", LineTypeName(lt), width);
fStrokeWidth = width;
// deliberately pick intervals that won't be caught by asPoints(), so
// we can test the filterPath code-path.
const SkScalar intervals[] = { 2, 1, 1, 1 };
fPathEffect.reset(new SkDashPathEffect(intervals,
SK_ARRAY_COUNT(intervals), 0));
SkScalar cx = 640 / 2; // center X
SkScalar cy = 480 / 2; // center Y
SkMatrix matrix;
switch (lt) {
case kHori_LineType:
matrix.setIdentity();
break;
case kVert_LineType:
matrix.setRotate(90, cx, cy);
break;
case kDiag_LineType:
matrix.setRotate(45, cx, cy);
break;
}
const SkScalar overshoot = 100*1000;
const SkPoint pts[2] = {
{ -overshoot, cy }, { 640 + overshoot, cy }
};
matrix.mapPoints(fPts, pts, 2);
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint p;
this->setupPaint(&p);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(fStrokeWidth);
p.setPathEffect(fPathEffect);
canvas->drawPoints(SkCanvas::kLines_PointMode, 2, fPts, p);
}
private:
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static const SkScalar gDots[] = { SK_Scalar1, SK_Scalar1 };
#define PARAM(array) array, SK_ARRAY_COUNT(array)
DEF_BENCH( return new DashBench(p, PARAM(gDots), 0); )
DEF_BENCH( return new DashBench(p, PARAM(gDots), 1); )
DEF_BENCH( return new DashBench(p, PARAM(gDots), 1, true); )
DEF_BENCH( return new DashBench(p, PARAM(gDots), 4); )
DEF_BENCH( return new MakeDashBench(p, make_poly, "poly"); )
DEF_BENCH( return new MakeDashBench(p, make_quad, "quad"); )
DEF_BENCH( return new MakeDashBench(p, make_cubic, "cubic"); )
DEF_BENCH( return new DashLineBench(p, 0, false); )
DEF_BENCH( return new DashLineBench(p, SK_Scalar1, false); )
DEF_BENCH( return new DashLineBench(p, 2 * SK_Scalar1, false); )
DEF_BENCH( return new DashLineBench(p, 0, true); )
DEF_BENCH( return new DashLineBench(p, SK_Scalar1, true); )
DEF_BENCH( return new DashLineBench(p, 2 * SK_Scalar1, true); )
DEF_BENCH( return new DrawPointsDashingBench(p, 1, 1, false); )
DEF_BENCH( return new DrawPointsDashingBench(p, 1, 1, true); )
DEF_BENCH( return new DrawPointsDashingBench(p, 3, 1, false); )
DEF_BENCH( return new DrawPointsDashingBench(p, 3, 1, true); )
DEF_BENCH( return new DrawPointsDashingBench(p, 5, 5, false); )
DEF_BENCH( return new DrawPointsDashingBench(p, 5, 5, true); )
DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kHori_LineType, 0); )
DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kVert_LineType, 0); )
DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kDiag_LineType, 0); )
// pass 2 to explicitly avoid any 1-is-the-same-as-hairline special casing
// hori_2 is just too slow to enable at the moment
DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kHori_LineType, 2); )
DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kVert_LineType, 2); )
DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kDiag_LineType, 2); )