1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "SkBenchmark.h"
9 #include "SkBitmap.h"
10 #include "SkCanvas.h"
11 #include "SkDashPathEffect.h"
12 #include "SkPaint.h"
13 #include "SkPath.h"
14 #include "SkRandom.h"
15 #include "SkString.h"
16 #include "SkTDArray.h"
17
18
19 /*
20 * Cases to consider:
21 *
22 * 1. antialiasing on/off (esp. width <= 1)
23 * 2. strokewidth == 0, 1, 2
24 * 3. hline, vline, diagonal, rect, oval
25 * 4. dots [1,1] ([N,N] where N=strokeWidth?) or arbitrary (e.g. [2,1] or [1,2,3,2])
26 */
path_hline(SkPath * path)27 static void path_hline(SkPath* path) {
28 path->moveTo(SkIntToScalar(10), SkIntToScalar(10));
29 path->lineTo(SkIntToScalar(600), SkIntToScalar(10));
30 }
31
32 class DashBench : public SkBenchmark {
33 protected:
34 SkString fName;
35 SkTDArray<SkScalar> fIntervals;
36 int fWidth;
37 SkPoint fPts[2];
38 bool fDoClip;
39
40 public:
DashBench(const SkScalar intervals[],int count,int width,bool doClip=false)41 DashBench(const SkScalar intervals[], int count, int width,
42 bool doClip = false) {
43 fIntervals.append(count, intervals);
44 for (int i = 0; i < count; ++i) {
45 fIntervals[i] *= width;
46 }
47 fWidth = width;
48 fName.printf("dash_%d_%s", width, doClip ? "clipped" : "noclip");
49 fDoClip = doClip;
50
51 fPts[0].set(SkIntToScalar(10), SkIntToScalar(10));
52 fPts[1].set(SkIntToScalar(600), SkIntToScalar(10));
53 }
54
makePath(SkPath * path)55 virtual void makePath(SkPath* path) {
56 path_hline(path);
57 }
58
59 protected:
onGetName()60 virtual const char* onGetName() SK_OVERRIDE {
61 return fName.c_str();
62 }
63
onDraw(const int loops,SkCanvas * canvas)64 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
65 SkPaint paint;
66 this->setupPaint(&paint);
67 paint.setStyle(SkPaint::kStroke_Style);
68 paint.setStrokeWidth(SkIntToScalar(fWidth));
69 paint.setAntiAlias(false);
70
71 SkPath path;
72 this->makePath(&path);
73
74 paint.setPathEffect(new SkDashPathEffect(fIntervals.begin(),
75 fIntervals.count(), 0))->unref();
76
77 if (fDoClip) {
78 SkRect r = path.getBounds();
79 r.inset(-SkIntToScalar(20), -SkIntToScalar(20));
80 // now move it so we don't intersect
81 r.offset(0, r.height() * 3 / 2);
82 canvas->clipRect(r);
83 }
84
85 this->handlePath(canvas, path, paint, loops);
86 }
87
handlePath(SkCanvas * canvas,const SkPath & path,const SkPaint & paint,int N)88 virtual void handlePath(SkCanvas* canvas, const SkPath& path,
89 const SkPaint& paint, int N) {
90 for (int i = 0; i < N; ++i) {
91 // canvas->drawPoints(SkCanvas::kLines_PointMode, 2, fPts, paint);
92 canvas->drawPath(path, paint);
93 }
94 }
95
96 private:
97 typedef SkBenchmark INHERITED;
98 };
99
100 class RectDashBench : public DashBench {
101 public:
RectDashBench(const SkScalar intervals[],int count,int width)102 RectDashBench(const SkScalar intervals[], int count, int width)
103 : INHERITED(intervals, count, width) {
104 fName.append("_rect");
105 }
106
107 protected:
handlePath(SkCanvas * canvas,const SkPath & path,const SkPaint & paint,int N)108 virtual void handlePath(SkCanvas* canvas, const SkPath& path,
109 const SkPaint& paint, int N) SK_OVERRIDE {
110 SkPoint pts[2];
111 if (!path.isLine(pts) || pts[0].fY != pts[1].fY) {
112 this->INHERITED::handlePath(canvas, path, paint, N);
113 } else {
114 SkRect rect;
115 rect.fLeft = pts[0].fX;
116 rect.fTop = pts[0].fY - paint.getStrokeWidth() / 2;
117 rect.fRight = rect.fLeft + SkIntToScalar(fWidth);
118 rect.fBottom = rect.fTop + paint.getStrokeWidth();
119
120 SkPaint p(paint);
121 p.setStyle(SkPaint::kFill_Style);
122 p.setPathEffect(NULL);
123
124 int count = SkScalarRoundToInt((pts[1].fX - pts[0].fX) / (2*fWidth));
125 SkScalar dx = SkIntToScalar(2 * fWidth);
126
127 for (int i = 0; i < N*10; ++i) {
128 SkRect r = rect;
129 for (int j = 0; j < count; ++j) {
130 canvas->drawRect(r, p);
131 r.offset(dx, 0);
132 }
133 }
134 }
135 }
136
137 private:
138 typedef DashBench INHERITED;
139 };
140
make_unit_star(SkPath * path,int n)141 static void make_unit_star(SkPath* path, int n) {
142 SkScalar rad = -SK_ScalarPI / 2;
143 const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n;
144
145 path->moveTo(0, -SK_Scalar1);
146 for (int i = 1; i < n; i++) {
147 rad += drad;
148 SkScalar cosV, sinV = SkScalarSinCos(rad, &cosV);
149 path->lineTo(cosV, sinV);
150 }
151 path->close();
152 }
153
make_poly(SkPath * path)154 static void make_poly(SkPath* path) {
155 make_unit_star(path, 9);
156 SkMatrix matrix;
157 matrix.setScale(SkIntToScalar(100), SkIntToScalar(100));
158 path->transform(matrix);
159 }
160
make_quad(SkPath * path)161 static void make_quad(SkPath* path) {
162 SkScalar x0 = SkIntToScalar(10);
163 SkScalar y0 = SkIntToScalar(10);
164 path->moveTo(x0, y0);
165 path->quadTo(x0, y0 + 400 * SK_Scalar1,
166 x0 + 600 * SK_Scalar1, y0 + 400 * SK_Scalar1);
167 }
168
make_cubic(SkPath * path)169 static void make_cubic(SkPath* path) {
170 SkScalar x0 = SkIntToScalar(10);
171 SkScalar y0 = SkIntToScalar(10);
172 path->moveTo(x0, y0);
173 path->cubicTo(x0, y0 + 400 * SK_Scalar1,
174 x0 + 600 * SK_Scalar1, y0 + 400 * SK_Scalar1,
175 x0 + 600 * SK_Scalar1, y0);
176 }
177
178 class MakeDashBench : public SkBenchmark {
179 SkString fName;
180 SkPath fPath;
181 SkAutoTUnref<SkPathEffect> fPE;
182
183 public:
MakeDashBench(void (* proc)(SkPath *),const char name[])184 MakeDashBench(void (*proc)(SkPath*), const char name[]) {
185 fName.printf("makedash_%s", name);
186 proc(&fPath);
187
188 SkScalar vals[] = { SkIntToScalar(4), SkIntToScalar(4) };
189 fPE.reset(new SkDashPathEffect(vals, 2, 0));
190 }
191
192 protected:
onGetName()193 virtual const char* onGetName() SK_OVERRIDE {
194 return fName.c_str();
195 }
196
onDraw(const int loops,SkCanvas *)197 virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
198 SkPath dst;
199 for (int i = 0; i < loops; ++i) {
200 SkStrokeRec rec(SkStrokeRec::kHairline_InitStyle);
201
202 fPE->filterPath(&dst, fPath, &rec, NULL);
203 dst.rewind();
204 }
205 }
206
207 private:
208 typedef SkBenchmark INHERITED;
209 };
210
211 /*
212 * We try to special case square dashes (intervals are equal to strokewidth).
213 */
214 class DashLineBench : public SkBenchmark {
215 SkString fName;
216 SkScalar fStrokeWidth;
217 bool fIsRound;
218 SkAutoTUnref<SkPathEffect> fPE;
219
220 public:
DashLineBench(SkScalar width,bool isRound)221 DashLineBench(SkScalar width, bool isRound) {
222 fName.printf("dashline_%g_%s", SkScalarToFloat(width), isRound ? "circle" : "square");
223 fStrokeWidth = width;
224 fIsRound = isRound;
225
226 SkScalar vals[] = { SK_Scalar1, SK_Scalar1 };
227 fPE.reset(new SkDashPathEffect(vals, 2, 0));
228 }
229
230 protected:
onGetName()231 virtual const char* onGetName() SK_OVERRIDE {
232 return fName.c_str();
233 }
234
onDraw(const int loops,SkCanvas * canvas)235 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
236 SkPaint paint;
237 this->setupPaint(&paint);
238 paint.setStrokeWidth(fStrokeWidth);
239 paint.setStrokeCap(fIsRound ? SkPaint::kRound_Cap : SkPaint::kSquare_Cap);
240 paint.setPathEffect(fPE);
241 for (int i = 0; i < loops; ++i) {
242 canvas->drawLine(10 * SK_Scalar1, 10 * SK_Scalar1,
243 640 * SK_Scalar1, 10 * SK_Scalar1, paint);
244 }
245 }
246
247 private:
248 typedef SkBenchmark INHERITED;
249 };
250
251 class DrawPointsDashingBench : public SkBenchmark {
252 SkString fName;
253 int fStrokeWidth;
254 bool fDoAA;
255
256 SkAutoTUnref<SkPathEffect> fPathEffect;
257
258 public:
DrawPointsDashingBench(int dashLength,int strokeWidth,bool doAA)259 DrawPointsDashingBench(int dashLength, int strokeWidth, bool doAA)
260 {
261 fName.printf("drawpointsdash_%d_%d%s", dashLength, strokeWidth, doAA ? "_aa" : "_bw");
262 fStrokeWidth = strokeWidth;
263 fDoAA = doAA;
264
265 SkScalar vals[] = { SkIntToScalar(dashLength), SkIntToScalar(dashLength) };
266 fPathEffect.reset(new SkDashPathEffect(vals, 2, SK_Scalar1, false));
267 }
268
269 protected:
onGetName()270 virtual const char* onGetName() SK_OVERRIDE {
271 return fName.c_str();
272 }
273
onDraw(const int loops,SkCanvas * canvas)274 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
275 SkPaint p;
276 this->setupPaint(&p);
277 p.setColor(SK_ColorBLACK);
278 p.setStyle(SkPaint::kStroke_Style);
279 p.setStrokeWidth(SkIntToScalar(fStrokeWidth));
280 p.setPathEffect(fPathEffect);
281 p.setAntiAlias(fDoAA);
282
283 SkPoint pts[2] = {
284 { SkIntToScalar(10), 0 },
285 { SkIntToScalar(640), 0 }
286 };
287
288 for (int i = 0; i < loops; ++i) {
289 pts[0].fY = pts[1].fY = SkIntToScalar(i % 480);
290 canvas->drawPoints(SkCanvas::kLines_PointMode, 2, pts, p);
291 }
292 }
293
294 private:
295 typedef SkBenchmark INHERITED;
296 };
297
298 // Want to test how we handle dashing when 99% of the dash is clipped out
299 class GiantDashBench : public SkBenchmark {
300 SkString fName;
301 SkScalar fStrokeWidth;
302 SkPoint fPts[2];
303 SkAutoTUnref<SkPathEffect> fPathEffect;
304
305 public:
306 enum LineType {
307 kHori_LineType,
308 kVert_LineType,
309 kDiag_LineType,
310 kLineTypeCount
311 };
312
LineTypeName(LineType lt)313 static const char* LineTypeName(LineType lt) {
314 static const char* gNames[] = { "hori", "vert", "diag" };
315 SK_COMPILE_ASSERT(kLineTypeCount == SK_ARRAY_COUNT(gNames), names_wrong_size);
316 return gNames[lt];
317 }
318
GiantDashBench(LineType lt,SkScalar width)319 GiantDashBench(LineType lt, SkScalar width) {
320 fName.printf("giantdashline_%s_%g", LineTypeName(lt), width);
321 fStrokeWidth = width;
322
323 // deliberately pick intervals that won't be caught by asPoints(), so
324 // we can test the filterPath code-path.
325 const SkScalar intervals[] = { 2, 1, 1, 1 };
326 fPathEffect.reset(new SkDashPathEffect(intervals,
327 SK_ARRAY_COUNT(intervals), 0));
328
329 SkScalar cx = 640 / 2; // center X
330 SkScalar cy = 480 / 2; // center Y
331 SkMatrix matrix;
332
333 switch (lt) {
334 case kHori_LineType:
335 matrix.setIdentity();
336 break;
337 case kVert_LineType:
338 matrix.setRotate(90, cx, cy);
339 break;
340 case kDiag_LineType:
341 matrix.setRotate(45, cx, cy);
342 break;
343 case kLineTypeCount:
344 // Not a real enum value.
345 break;
346 }
347
348 const SkScalar overshoot = 100*1000;
349 const SkPoint pts[2] = {
350 { -overshoot, cy }, { 640 + overshoot, cy }
351 };
352 matrix.mapPoints(fPts, pts, 2);
353 }
354
355 protected:
onGetName()356 virtual const char* onGetName() SK_OVERRIDE {
357 return fName.c_str();
358 }
359
onDraw(const int loops,SkCanvas * canvas)360 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
361 SkPaint p;
362 this->setupPaint(&p);
363 p.setStyle(SkPaint::kStroke_Style);
364 p.setStrokeWidth(fStrokeWidth);
365 p.setPathEffect(fPathEffect);
366
367 for (int i = 0; i < loops; i++) {
368 canvas->drawPoints(SkCanvas::kLines_PointMode, 2, fPts, p);
369 }
370 }
371
372 private:
373 typedef SkBenchmark INHERITED;
374 };
375
376
377 ///////////////////////////////////////////////////////////////////////////////
378
379 static const SkScalar gDots[] = { SK_Scalar1, SK_Scalar1 };
380
381 #define PARAM(array) array, SK_ARRAY_COUNT(array)
382
383 DEF_BENCH( return new DashBench(PARAM(gDots), 0); )
384 DEF_BENCH( return new DashBench(PARAM(gDots), 1); )
385 DEF_BENCH( return new DashBench(PARAM(gDots), 1, true); )
386 DEF_BENCH( return new DashBench(PARAM(gDots), 4); )
387 DEF_BENCH( return new MakeDashBench(make_poly, "poly"); )
388 DEF_BENCH( return new MakeDashBench(make_quad, "quad"); )
389 DEF_BENCH( return new MakeDashBench(make_cubic, "cubic"); )
390 DEF_BENCH( return new DashLineBench(0, false); )
391 DEF_BENCH( return new DashLineBench(SK_Scalar1, false); )
392 DEF_BENCH( return new DashLineBench(2 * SK_Scalar1, false); )
393 DEF_BENCH( return new DashLineBench(0, true); )
394 DEF_BENCH( return new DashLineBench(SK_Scalar1, true); )
395 DEF_BENCH( return new DashLineBench(2 * SK_Scalar1, true); )
396
397 DEF_BENCH( return new DrawPointsDashingBench(1, 1, false); )
398 DEF_BENCH( return new DrawPointsDashingBench(1, 1, true); )
399 DEF_BENCH( return new DrawPointsDashingBench(3, 1, false); )
400 DEF_BENCH( return new DrawPointsDashingBench(3, 1, true); )
401 DEF_BENCH( return new DrawPointsDashingBench(5, 5, false); )
402 DEF_BENCH( return new DrawPointsDashingBench(5, 5, true); )
403
404 /* Disable the GiantDashBench for Android devices until we can better control
405 * the memory usage. (https://code.google.com/p/skia/issues/detail?id=1430)
406 */
407 #ifndef SK_BUILD_FOR_ANDROID
408 DEF_BENCH( return new GiantDashBench(GiantDashBench::kHori_LineType, 0); )
409 DEF_BENCH( return new GiantDashBench(GiantDashBench::kVert_LineType, 0); )
410 DEF_BENCH( return new GiantDashBench(GiantDashBench::kDiag_LineType, 0); )
411
412 // pass 2 to explicitly avoid any 1-is-the-same-as-hairline special casing
413
414 // hori_2 is just too slow to enable at the moment
415 DEF_BENCH( return new GiantDashBench(GiantDashBench::kHori_LineType, 2); )
416 DEF_BENCH( return new GiantDashBench(GiantDashBench::kVert_LineType, 2); )
417 DEF_BENCH( return new GiantDashBench(GiantDashBench::kDiag_LineType, 2); )
418 #endif
419