PictureTest.cpp revision 47b679b37dbbe4581c605c24890de9cafd974bb3 
1/*
2 * Copyright 2012 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SkBitmapDevice.h"
9#include "SkBlurImageFilter.h"
10#include "SkCanvas.h"
11#include "SkColorPriv.h"
12#include "SkDashPathEffect.h"
13#include "SkData.h"
14#include "SkDecodingImageGenerator.h"
15#include "SkError.h"
16#if SK_SUPPORT_GPU
17#include "SkGpuDevice.h"
18#endif
19#include "SkImageEncoder.h"
20#include "SkImageGenerator.h"
21#include "SkPaint.h"
22#include "SkPicture.h"
23#include "SkPictureRecorder.h"
24#include "SkPictureUtils.h"
25#include "SkRRect.h"
26#include "SkRandom.h"
27#include "SkShader.h"
28#include "SkStream.h"
29
30#if SK_SUPPORT_GPU
31#include "SkSurface.h"
32#include "GrContextFactory.h"
33#include "GrPictureUtils.h"
34#endif
35#include "Test.h"
36
37#include "SkLumaColorFilter.h"
38#include "SkColorFilterImageFilter.h"
39
40static const int gColorScale = 30;
41static const int gColorOffset = 60;
42
43static void make_bm(SkBitmap* bm, int w, int h, SkColor color, bool immutable) {
44    bm->allocN32Pixels(w, h);
45    bm->eraseColor(color);
46    if (immutable) {
47        bm->setImmutable();
48    }
49}
50
51static void make_checkerboard(SkBitmap* bm, int w, int h, bool immutable) {
52    SkASSERT(w % 2 == 0);
53    SkASSERT(h % 2 == 0);
54    bm->allocPixels(SkImageInfo::Make(w, h, kAlpha_8_SkColorType,
55                                      kPremul_SkAlphaType));
56    SkAutoLockPixels lock(*bm);
57    for (int y = 0; y < h; y += 2) {
58        uint8_t* s = bm->getAddr8(0, y);
59        for (int x = 0; x < w; x += 2) {
60            *s++ = 0xFF;
61            *s++ = 0x00;
62        }
63        s = bm->getAddr8(0, y + 1);
64        for (int x = 0; x < w; x += 2) {
65            *s++ = 0x00;
66            *s++ = 0xFF;
67        }
68    }
69    if (immutable) {
70        bm->setImmutable();
71    }
72}
73
74static void init_paint(SkPaint* paint, const SkBitmap &bm) {
75    SkShader* shader = SkShader::CreateBitmapShader(bm,
76                                                    SkShader::kClamp_TileMode,
77                                                    SkShader::kClamp_TileMode);
78    paint->setShader(shader)->unref();
79}
80
81typedef void (*DrawBitmapProc)(SkCanvas*, const SkBitmap&,
82                               const SkBitmap&, const SkPoint&,
83                               SkTDArray<SkPixelRef*>* usedPixRefs);
84
85static void drawpaint_proc(SkCanvas* canvas, const SkBitmap& bm,
86                           const SkBitmap& altBM, const SkPoint& pos,
87                           SkTDArray<SkPixelRef*>* usedPixRefs) {
88    SkPaint paint;
89    init_paint(&paint, bm);
90
91    canvas->drawPaint(paint);
92    *usedPixRefs->append() = bm.pixelRef();
93}
94
95static void drawpoints_proc(SkCanvas* canvas, const SkBitmap& bm,
96                            const SkBitmap& altBM, const SkPoint& pos,
97                            SkTDArray<SkPixelRef*>* usedPixRefs) {
98    SkPaint paint;
99    init_paint(&paint, bm);
100
101    // draw a rect
102    SkPoint points[5] = {
103        { pos.fX, pos.fY },
104        { pos.fX + bm.width() - 1, pos.fY },
105        { pos.fX + bm.width() - 1, pos.fY + bm.height() - 1 },
106        { pos.fX, pos.fY + bm.height() - 1 },
107        { pos.fX, pos.fY },
108    };
109
110    canvas->drawPoints(SkCanvas::kPolygon_PointMode, 5, points, paint);
111    *usedPixRefs->append() = bm.pixelRef();
112}
113
114static void drawrect_proc(SkCanvas* canvas, const SkBitmap& bm,
115                          const SkBitmap& altBM, const SkPoint& pos,
116                          SkTDArray<SkPixelRef*>* usedPixRefs) {
117    SkPaint paint;
118    init_paint(&paint, bm);
119
120    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
121    r.offset(pos.fX, pos.fY);
122
123    canvas->drawRect(r, paint);
124    *usedPixRefs->append() = bm.pixelRef();
125}
126
127static void drawoval_proc(SkCanvas* canvas, const SkBitmap& bm,
128                          const SkBitmap& altBM, const SkPoint& pos,
129                          SkTDArray<SkPixelRef*>* usedPixRefs) {
130    SkPaint paint;
131    init_paint(&paint, bm);
132
133    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
134    r.offset(pos.fX, pos.fY);
135
136    canvas->drawOval(r, paint);
137    *usedPixRefs->append() = bm.pixelRef();
138}
139
140static void drawrrect_proc(SkCanvas* canvas, const SkBitmap& bm,
141                           const SkBitmap& altBM, const SkPoint& pos,
142                           SkTDArray<SkPixelRef*>* usedPixRefs) {
143    SkPaint paint;
144    init_paint(&paint, bm);
145
146    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
147    r.offset(pos.fX, pos.fY);
148
149    SkRRect rr;
150    rr.setRectXY(r, SkIntToScalar(bm.width())/4, SkIntToScalar(bm.height())/4);
151    canvas->drawRRect(rr, paint);
152    *usedPixRefs->append() = bm.pixelRef();
153}
154
155static void drawpath_proc(SkCanvas* canvas, const SkBitmap& bm,
156                          const SkBitmap& altBM, const SkPoint& pos,
157                          SkTDArray<SkPixelRef*>* usedPixRefs) {
158    SkPaint paint;
159    init_paint(&paint, bm);
160
161    SkPath path;
162    path.lineTo(bm.width()/2.0f, SkIntToScalar(bm.height()));
163    path.lineTo(SkIntToScalar(bm.width()), 0);
164    path.close();
165    path.offset(pos.fX, pos.fY);
166
167    canvas->drawPath(path, paint);
168    *usedPixRefs->append() = bm.pixelRef();
169}
170
171static void drawbitmap_proc(SkCanvas* canvas, const SkBitmap& bm,
172                            const SkBitmap& altBM, const SkPoint& pos,
173                            SkTDArray<SkPixelRef*>* usedPixRefs) {
174    canvas->drawBitmap(bm, pos.fX, pos.fY, NULL);
175    *usedPixRefs->append() = bm.pixelRef();
176}
177
178static void drawbitmap_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
179                                       const SkBitmap& altBM, const SkPoint& pos,
180                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
181    SkPaint paint;
182    init_paint(&paint, bm);
183
184    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
185    canvas->drawBitmap(altBM, pos.fX, pos.fY, &paint);
186    *usedPixRefs->append() = bm.pixelRef();
187    *usedPixRefs->append() = altBM.pixelRef();
188}
189
190static void drawsprite_proc(SkCanvas* canvas, const SkBitmap& bm,
191                            const SkBitmap& altBM, const SkPoint& pos,
192                            SkTDArray<SkPixelRef*>* usedPixRefs) {
193    const SkMatrix& ctm = canvas->getTotalMatrix();
194
195    SkPoint p(pos);
196    ctm.mapPoints(&p, 1);
197
198    canvas->drawSprite(bm, (int)p.fX, (int)p.fY, NULL);
199    *usedPixRefs->append() = bm.pixelRef();
200}
201
202#if 0
203// Although specifiable, this case doesn't seem to make sense (i.e., the
204// bitmap in the shader is never used).
205static void drawsprite_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
206                                       const SkBitmap& altBM, const SkPoint& pos,
207                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
208    SkPaint paint;
209    init_paint(&paint, bm);
210
211    const SkMatrix& ctm = canvas->getTotalMatrix();
212
213    SkPoint p(pos);
214    ctm.mapPoints(&p, 1);
215
216    canvas->drawSprite(altBM, (int)p.fX, (int)p.fY, &paint);
217    *usedPixRefs->append() = bm.pixelRef();
218    *usedPixRefs->append() = altBM.pixelRef();
219}
220#endif
221
222static void drawbitmaprect_proc(SkCanvas* canvas, const SkBitmap& bm,
223                                const SkBitmap& altBM, const SkPoint& pos,
224                                SkTDArray<SkPixelRef*>* usedPixRefs) {
225    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
226
227    r.offset(pos.fX, pos.fY);
228    canvas->drawBitmapRectToRect(bm, NULL, r, NULL);
229    *usedPixRefs->append() = bm.pixelRef();
230}
231
232static void drawbitmaprect_withshader_proc(SkCanvas* canvas,
233                                           const SkBitmap& bm,
234                                           const SkBitmap& altBM,
235                                           const SkPoint& pos,
236                                           SkTDArray<SkPixelRef*>* usedPixRefs) {
237    SkPaint paint;
238    init_paint(&paint, bm);
239
240    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
241    r.offset(pos.fX, pos.fY);
242
243    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
244    canvas->drawBitmapRectToRect(altBM, NULL, r, &paint);
245    *usedPixRefs->append() = bm.pixelRef();
246    *usedPixRefs->append() = altBM.pixelRef();
247}
248
249static void drawtext_proc(SkCanvas* canvas, const SkBitmap& bm,
250                          const SkBitmap& altBM, const SkPoint& pos,
251                          SkTDArray<SkPixelRef*>* usedPixRefs) {
252    SkPaint paint;
253    init_paint(&paint, bm);
254    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
255
256    canvas->drawText("0", 1, pos.fX, pos.fY+bm.width(), paint);
257    *usedPixRefs->append() = bm.pixelRef();
258}
259
260static void drawpostext_proc(SkCanvas* canvas, const SkBitmap& bm,
261                             const SkBitmap& altBM, const SkPoint& pos,
262                             SkTDArray<SkPixelRef*>* usedPixRefs) {
263    SkPaint paint;
264    init_paint(&paint, bm);
265    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
266
267    SkPoint point = { pos.fX, pos.fY + bm.height() };
268    canvas->drawPosText("O", 1, &point, paint);
269    *usedPixRefs->append() = bm.pixelRef();
270}
271
272static void drawtextonpath_proc(SkCanvas* canvas, const SkBitmap& bm,
273                                const SkBitmap& altBM, const SkPoint& pos,
274                                SkTDArray<SkPixelRef*>* usedPixRefs) {
275    SkPaint paint;
276
277    init_paint(&paint, bm);
278    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
279
280    SkPath path;
281    path.lineTo(SkIntToScalar(bm.width()), 0);
282    path.offset(pos.fX, pos.fY+bm.height());
283
284    canvas->drawTextOnPath("O", 1, path, NULL, paint);
285    *usedPixRefs->append() = bm.pixelRef();
286}
287
288static void drawverts_proc(SkCanvas* canvas, const SkBitmap& bm,
289                           const SkBitmap& altBM, const SkPoint& pos,
290                           SkTDArray<SkPixelRef*>* usedPixRefs) {
291    SkPaint paint;
292    init_paint(&paint, bm);
293
294    SkPoint verts[4] = {
295        { pos.fX, pos.fY },
296        { pos.fX + bm.width(), pos.fY },
297        { pos.fX + bm.width(), pos.fY + bm.height() },
298        { pos.fX, pos.fY + bm.height() }
299    };
300    SkPoint texs[4] = { { 0, 0 },
301                        { SkIntToScalar(bm.width()), 0 },
302                        { SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) },
303                        { 0, SkIntToScalar(bm.height()) } };
304    uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
305
306    canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 4, verts, texs, NULL, NULL,
307                         indices, 6, paint);
308    *usedPixRefs->append() = bm.pixelRef();
309}
310
311// Return a picture with the bitmaps drawn at the specified positions.
312static SkPicture* record_bitmaps(const SkBitmap bm[],
313                                 const SkPoint pos[],
314                                 SkTDArray<SkPixelRef*> analytic[],
315                                 int count,
316                                 DrawBitmapProc proc) {
317    SkPictureRecorder recorder;
318    SkCanvas* canvas = recorder.beginRecording(1000, 1000, NULL, 0);
319    for (int i = 0; i < count; ++i) {
320        analytic[i].rewind();
321        canvas->save();
322        SkRect clipRect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY,
323                                           SkIntToScalar(bm[i].width()),
324                                           SkIntToScalar(bm[i].height()));
325        canvas->clipRect(clipRect, SkRegion::kIntersect_Op);
326        proc(canvas, bm[i], bm[count+i], pos[i], &analytic[i]);
327        canvas->restore();
328    }
329    return recorder.endRecording();
330}
331
332static void rand_rect(SkRect* rect, SkRandom& rand, SkScalar W, SkScalar H) {
333    rect->fLeft   = rand.nextRangeScalar(-W, 2*W);
334    rect->fTop    = rand.nextRangeScalar(-H, 2*H);
335    rect->fRight  = rect->fLeft + rand.nextRangeScalar(0, W);
336    rect->fBottom = rect->fTop + rand.nextRangeScalar(0, H);
337
338    // we integralize rect to make our tests more predictable, since Gather is
339    // a little sloppy.
340    SkIRect ir;
341    rect->round(&ir);
342    rect->set(ir);
343}
344
345static void draw(SkPicture* pic, int width, int height, SkBitmap* result) {
346    make_bm(result, width, height, SK_ColorBLACK, false);
347
348    SkCanvas canvas(*result);
349    canvas.drawPicture(*pic);
350}
351
352template <typename T> int find_index(const T* array, T elem, int count) {
353    for (int i = 0; i < count; ++i) {
354        if (array[i] == elem) {
355            return i;
356        }
357    }
358    return -1;
359}
360
361// Return true if 'ref' is found in array[]
362static bool find(SkPixelRef const * const * array, SkPixelRef const * ref, int count) {
363    return find_index<const SkPixelRef*>(array, ref, count) >= 0;
364}
365
366// Look at each pixel that is inside 'subset', and if its color appears in
367// colors[], find the corresponding value in refs[] and append that ref into
368// array, skipping duplicates of the same value.
369// Note that gathering pixelRefs from rendered colors suffers from the problem
370// that multiple simultaneous textures (e.g., A8 for alpha and 8888 for color)
371// isn't easy to reconstruct.
372static void gather_from_image(const SkBitmap& bm, SkPixelRef* const refs[],
373                              int count, SkTDArray<SkPixelRef*>* array,
374                              const SkRect& subset) {
375    SkIRect ir;
376    subset.roundOut(&ir);
377
378    if (!ir.intersect(0, 0, bm.width()-1, bm.height()-1)) {
379        return;
380    }
381
382    // Since we only want to return unique values in array, when we scan we just
383    // set a bit for each index'd color found. In practice we only have a few
384    // distinct colors, so we just use an int's bits as our array. Hence the
385    // assert that count <= number-of-bits-in-our-int.
386    SkASSERT((unsigned)count <= 32);
387    uint32_t bitarray = 0;
388
389    SkAutoLockPixels alp(bm);
390
391    for (int y = ir.fTop; y < ir.fBottom; ++y) {
392        for (int x = ir.fLeft; x < ir.fRight; ++x) {
393            SkPMColor pmc = *bm.getAddr32(x, y);
394            // the only good case where the color is not found would be if
395            // the color is transparent, meaning no bitmap was drawn in that
396            // pixel.
397            if (pmc) {
398                uint32_t index = SkGetPackedR32(pmc);
399                SkASSERT(SkGetPackedG32(pmc) == index);
400                SkASSERT(SkGetPackedB32(pmc) == index);
401                if (0 == index) {
402                    continue;           // background color
403                }
404                SkASSERT(0 == (index - gColorOffset) % gColorScale);
405                index = (index - gColorOffset) / gColorScale;
406                SkASSERT(static_cast<int>(index) < count);
407                bitarray |= 1 << index;
408            }
409        }
410    }
411
412    for (int i = 0; i < count; ++i) {
413        if (bitarray & (1 << i)) {
414            *array->append() = refs[i];
415        }
416    }
417}
418
419static void gather_from_analytic(const SkPoint pos[], SkScalar w, SkScalar h,
420                                 const SkTDArray<SkPixelRef*> analytic[],
421                                 int count,
422                                 SkTDArray<SkPixelRef*>* result,
423                                 const SkRect& subset) {
424    for (int i = 0; i < count; ++i) {
425        SkRect rect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY, w, h);
426
427        if (SkRect::Intersects(subset, rect)) {
428            result->append(analytic[i].count(), analytic[i].begin());
429        }
430    }
431}
432
433
434static const struct {
435    const DrawBitmapProc proc;
436    const char* const desc;
437} gProcs[] = {
438    {drawpaint_proc, "drawpaint"},
439    {drawpoints_proc, "drawpoints"},
440    {drawrect_proc, "drawrect"},
441    {drawoval_proc, "drawoval"},
442    {drawrrect_proc, "drawrrect"},
443    {drawpath_proc, "drawpath"},
444    {drawbitmap_proc, "drawbitmap"},
445    {drawbitmap_withshader_proc, "drawbitmap_withshader"},
446    {drawsprite_proc, "drawsprite"},
447#if 0
448    {drawsprite_withshader_proc, "drawsprite_withshader"},
449#endif
450    {drawbitmaprect_proc, "drawbitmaprect"},
451    {drawbitmaprect_withshader_proc, "drawbitmaprect_withshader"},
452    {drawtext_proc, "drawtext"},
453    {drawpostext_proc, "drawpostext"},
454    {drawtextonpath_proc, "drawtextonpath"},
455    {drawverts_proc, "drawverts"},
456};
457
458static void create_textures(SkBitmap* bm, SkPixelRef** refs, int num, int w, int h) {
459    // Our convention is that the color components contain an encoding of
460    // the index of their corresponding bitmap/pixelref. (0,0,0,0) is
461    // reserved for the background
462    for (int i = 0; i < num; ++i) {
463        make_bm(&bm[i], w, h,
464                SkColorSetARGB(0xFF,
465                               gColorScale*i+gColorOffset,
466                               gColorScale*i+gColorOffset,
467                               gColorScale*i+gColorOffset),
468                true);
469        refs[i] = bm[i].pixelRef();
470    }
471
472    // The A8 alternate bitmaps are all BW checkerboards
473    for (int i = 0; i < num; ++i) {
474        make_checkerboard(&bm[num+i], w, h, true);
475        refs[num+i] = bm[num+i].pixelRef();
476    }
477}
478
479static void test_gatherpixelrefs(skiatest::Reporter* reporter) {
480    const int IW = 32;
481    const int IH = IW;
482    const SkScalar W = SkIntToScalar(IW);
483    const SkScalar H = W;
484
485    static const int N = 4;
486    SkBitmap bm[2*N];
487    SkPixelRef* refs[2*N];
488    SkTDArray<SkPixelRef*> analytic[N];
489
490    const SkPoint pos[N] = {
491        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
492    };
493
494    create_textures(bm, refs, N, IW, IH);
495
496    SkRandom rand;
497    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
498        SkAutoTUnref<SkPicture> pic(
499            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
500
501        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
502        // quick check for a small piece of each quadrant, which should just
503        // contain 1 or 2 bitmaps.
504        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
505            SkRect r;
506            r.set(2, 2, W - 2, H - 2);
507            r.offset(pos[i].fX, pos[i].fY);
508            SkAutoDataUnref data(SkPictureUtils::GatherPixelRefs(pic, r));
509            if (!data) {
510                ERRORF(reporter, "SkPictureUtils::GatherPixelRefs returned "
511                       "NULL for %s.", gProcs[k].desc);
512                continue;
513            }
514            SkPixelRef** gatheredRefs = (SkPixelRef**)data->data();
515            int count = static_cast<int>(data->size() / sizeof(SkPixelRef*));
516            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
517            if (1 == count) {
518                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
519            } else if (2 == count) {
520                REPORTER_ASSERT(reporter,
521                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
522                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
523            }
524        }
525
526        SkBitmap image;
527        draw(pic, 2*IW, 2*IH, &image);
528
529        // Test a bunch of random (mostly) rects, and compare the gather results
530        // with a deduced list of refs by looking at the colors drawn.
531        for (int j = 0; j < 100; ++j) {
532            SkRect r;
533            rand_rect(&r, rand, 2*W, 2*H);
534
535            SkTDArray<SkPixelRef*> fromImage;
536            gather_from_image(image, refs, N, &fromImage, r);
537
538            SkTDArray<SkPixelRef*> fromAnalytic;
539            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
540
541            SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
542            size_t dataSize = data ? data->size() : 0;
543            int gatherCount = static_cast<int>(dataSize / sizeof(SkPixelRef*));
544            SkASSERT(gatherCount * sizeof(SkPixelRef*) == dataSize);
545            SkPixelRef** gatherRefs = data ? (SkPixelRef**)(data->data()) : NULL;
546            SkAutoDataUnref adu(data);
547
548            // Everything that we saw drawn should appear in the analytic list
549            // but the analytic list may contain some pixelRefs that were not
550            // seen in the image (e.g., A8 textures used as masks)
551            for (int i = 0; i < fromImage.count(); ++i) {
552                if (-1 == fromAnalytic.find(fromImage[i])) {
553                    ERRORF(reporter, "PixelRef missing %d %s",
554                           i, gProcs[k].desc);
555                }
556            }
557
558            /*
559             *  GatherPixelRefs is conservative, so it can return more bitmaps
560             *  than are strictly required. Thus our check here is only that
561             *  Gather didn't miss any that we actually needed. Even that isn't
562             *  a strict requirement on Gather, which is meant to be quick and
563             *  only mostly-correct, but at the moment this test should work.
564             */
565            for (int i = 0; i < fromAnalytic.count(); ++i) {
566                bool found = find(gatherRefs, fromAnalytic[i], gatherCount);
567                if (!found) {
568                    ERRORF(reporter, "PixelRef missing %d %s",
569                           i, gProcs[k].desc);
570                }
571#if 0
572                // enable this block of code to debug failures, as it will rerun
573                // the case that failed.
574                if (!found) {
575                    SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
576                    size_t dataSize = data ? data->size() : 0;
577                }
578#endif
579            }
580        }
581    }
582}
583
584static void test_gatherpixelrefsandrects(skiatest::Reporter* reporter) {
585    const int IW = 32;
586    const int IH = IW;
587    const SkScalar W = SkIntToScalar(IW);
588    const SkScalar H = W;
589
590    static const int N = 4;
591    SkBitmap bm[2*N];
592    SkPixelRef* refs[2*N];
593    SkTDArray<SkPixelRef*> analytic[N];
594
595    const SkPoint pos[N] = {
596        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
597    };
598
599    create_textures(bm, refs, N, IW, IH);
600
601    SkRandom rand;
602    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
603        SkAutoTUnref<SkPicture> pic(
604            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
605
606        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
607
608        SkAutoTUnref<SkPictureUtils::SkPixelRefContainer> prCont(
609                                new SkPictureUtils::SkPixelRefsAndRectsList);
610
611        SkPictureUtils::GatherPixelRefsAndRects(pic, prCont);
612
613        // quick check for a small piece of each quadrant, which should just
614        // contain 1 or 2 bitmaps.
615        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
616            SkRect r;
617            r.set(2, 2, W - 2, H - 2);
618            r.offset(pos[i].fX, pos[i].fY);
619
620            SkTDArray<SkPixelRef*> gatheredRefs;
621            prCont->query(r, &gatheredRefs);
622
623            int count = gatheredRefs.count();
624            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
625            if (1 == count) {
626                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
627            } else if (2 == count) {
628                REPORTER_ASSERT(reporter,
629                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
630                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
631            }
632        }
633
634        SkBitmap image;
635        draw(pic, 2*IW, 2*IH, &image);
636
637        // Test a bunch of random (mostly) rects, and compare the gather results
638        // with the analytic results and the pixel refs seen in a rendering.
639        for (int j = 0; j < 100; ++j) {
640            SkRect r;
641            rand_rect(&r, rand, 2*W, 2*H);
642
643            SkTDArray<SkPixelRef*> fromImage;
644            gather_from_image(image, refs, N, &fromImage, r);
645
646            SkTDArray<SkPixelRef*> fromAnalytic;
647            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
648
649            SkTDArray<SkPixelRef*> gatheredRefs;
650            prCont->query(r, &gatheredRefs);
651
652            // Everything that we saw drawn should appear in the analytic list
653            // but the analytic list may contain some pixelRefs that were not
654            // seen in the image (e.g., A8 textures used as masks)
655            for (int i = 0; i < fromImage.count(); ++i) {
656                REPORTER_ASSERT(reporter, -1 != fromAnalytic.find(fromImage[i]));
657            }
658
659            // Everything in the analytic list should appear in the gathered
660            // list.
661            for (int i = 0; i < fromAnalytic.count(); ++i) {
662                REPORTER_ASSERT(reporter, -1 != gatheredRefs.find(fromAnalytic[i]));
663            }
664        }
665    }
666}
667
668#ifdef SK_DEBUG
669// Ensure that deleting SkPicturePlayback does not assert. Asserts only fire in debug mode, so only
670// run in debug mode.
671static void test_deleting_empty_playback() {
672    SkPictureRecorder recorder;
673    // Creates an SkPictureRecord
674    recorder.beginRecording(0, 0, NULL, 0);
675    // Turns that into an SkPicturePlayback
676    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
677    // Deletes the old SkPicturePlayback, and creates a new SkPictureRecord
678    recorder.beginRecording(0, 0, NULL, 0);
679}
680
681// Ensure that serializing an empty picture does not assert. Likewise only runs in debug mode.
682static void test_serializing_empty_picture() {
683    SkPictureRecorder recorder;
684    recorder.beginRecording(0, 0, NULL, 0);
685    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
686    SkDynamicMemoryWStream stream;
687    picture->serialize(&stream);
688}
689#endif
690
691static void rand_op(SkCanvas* canvas, SkRandom& rand) {
692    SkPaint paint;
693    SkRect rect = SkRect::MakeWH(50, 50);
694
695    SkScalar unit = rand.nextUScalar1();
696    if (unit <= 0.3) {
697//        SkDebugf("save\n");
698        canvas->save();
699    } else if (unit <= 0.6) {
700//        SkDebugf("restore\n");
701        canvas->restore();
702    } else if (unit <= 0.9) {
703//        SkDebugf("clip\n");
704        canvas->clipRect(rect);
705    } else {
706//        SkDebugf("draw\n");
707        canvas->drawPaint(paint);
708    }
709}
710
711#if SK_SUPPORT_GPU
712static void test_gpu_veto(skiatest::Reporter* reporter) {
713
714    SkPictureRecorder recorder;
715
716    SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
717    {
718        SkPath path;
719        path.moveTo(0, 0);
720        path.lineTo(50, 50);
721
722        SkScalar intervals[] = { 1.0f, 1.0f };
723        SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
724
725        SkPaint paint;
726        paint.setStyle(SkPaint::kStroke_Style);
727        paint.setPathEffect(dash);
728
729        canvas->drawPath(path, paint);
730    }
731    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
732    // path effects currently render an SkPicture undesireable for GPU rendering
733    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
734
735    canvas = recorder.beginRecording(100, 100, NULL, 0);
736    {
737        SkPath path;
738
739        path.moveTo(0, 0);
740        path.lineTo(0, 50);
741        path.lineTo(25, 25);
742        path.lineTo(50, 50);
743        path.lineTo(50, 0);
744        path.close();
745        REPORTER_ASSERT(reporter, !path.isConvex());
746
747        SkPaint paint;
748        paint.setAntiAlias(true);
749        for (int i = 0; i < 50; ++i) {
750            canvas->drawPath(path, paint);
751        }
752    }
753    picture.reset(recorder.endRecording());
754    // A lot of AA concave paths currently render an SkPicture undesireable for GPU rendering
755    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
756
757    canvas = recorder.beginRecording(100, 100, NULL, 0);
758    {
759        SkPath path;
760
761        path.moveTo(0, 0);
762        path.lineTo(0, 50);
763        path.lineTo(25, 25);
764        path.lineTo(50, 50);
765        path.lineTo(50, 0);
766        path.close();
767        REPORTER_ASSERT(reporter, !path.isConvex());
768
769        SkPaint paint;
770        paint.setAntiAlias(true);
771        paint.setStyle(SkPaint::kStroke_Style);
772        paint.setStrokeWidth(0);
773        for (int i = 0; i < 50; ++i) {
774            canvas->drawPath(path, paint);
775        }
776    }
777    picture.reset(recorder.endRecording());
778    // hairline stroked AA concave paths are fine for GPU rendering
779    REPORTER_ASSERT(reporter, picture->suitableForGpuRasterization(NULL));
780}
781
782static void test_gpu_picture_optimization(skiatest::Reporter* reporter,
783                                          GrContextFactory* factory) {
784
785    GrContext* context = factory->get(GrContextFactory::kNative_GLContextType);
786
787    static const int kWidth = 100;
788    static const int kHeight = 100;
789
790    SkAutoTUnref<SkPicture> pict;
791
792    // create a picture with the structure:
793    // 1)
794    //      SaveLayer
795    //      Restore
796    // 2)
797    //      SaveLayer
798    //          Translate
799    //          SaveLayer w/ bound
800    //          Restore
801    //      Restore
802    // 3)
803    //      SaveLayer w/ copyable paint
804    //      Restore
805    // 4)
806    //      SaveLayer w/ non-copyable paint
807    //      Restore
808    {
809        SkPictureRecorder recorder;
810
811        SkCanvas* c = recorder.beginRecording(kWidth, kHeight, NULL, 0);
812        // 1)
813        c->saveLayer(NULL, NULL);
814        c->restore();
815
816        // 2)
817        c->saveLayer(NULL, NULL);
818            c->translate(kWidth/2, kHeight/2);
819            SkRect r = SkRect::MakeXYWH(0, 0, kWidth/2, kHeight/2);
820            c->saveLayer(&r, NULL);
821            c->restore();
822        c->restore();
823
824        // 3)
825        {
826            SkPaint p;
827            p.setColor(SK_ColorRED);
828            c->saveLayer(NULL, &p);
829            c->restore();
830        }
831        // 4)
832        // TODO: this case will need to be removed once the paint's are immutable
833        {
834            SkPaint p;
835            SkAutoTUnref<SkColorFilter> cf(SkLumaColorFilter::Create());
836            p.setImageFilter(SkColorFilterImageFilter::Create(cf.get()))->unref();
837            c->saveLayer(NULL, &p);
838            c->restore();
839        }
840
841        pict.reset(recorder.endRecording());
842    }
843
844    // Now test out the SaveLayer extraction
845    {
846        SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
847
848        SkAutoTUnref<SkSurface> surface(SkSurface::NewScratchRenderTarget(context, info));
849
850        SkCanvas* canvas = surface->getCanvas();
851
852        canvas->EXPERIMENTAL_optimize(pict);
853
854        SkPicture::AccelData::Key key = GPUAccelData::ComputeAccelDataKey();
855
856        const SkPicture::AccelData* data = pict->EXPERIMENTAL_getAccelData(key);
857        REPORTER_ASSERT(reporter, NULL != data);
858
859        const GPUAccelData *gpuData = static_cast<const GPUAccelData*>(data);
860        REPORTER_ASSERT(reporter, 5 == gpuData->numSaveLayers());
861
862        const GPUAccelData::SaveLayerInfo& info0 = gpuData->saveLayerInfo(0);
863        // The parent/child layer appear in reverse order
864        const GPUAccelData::SaveLayerInfo& info1 = gpuData->saveLayerInfo(2);
865        const GPUAccelData::SaveLayerInfo& info2 = gpuData->saveLayerInfo(1);
866        const GPUAccelData::SaveLayerInfo& info3 = gpuData->saveLayerInfo(3);
867//        const GPUAccelData::SaveLayerInfo& info4 = gpuData->saveLayerInfo(4);
868
869        REPORTER_ASSERT(reporter, info0.fValid);
870        REPORTER_ASSERT(reporter, kWidth == info0.fSize.fWidth && kHeight == info0.fSize.fHeight);
871        REPORTER_ASSERT(reporter, info0.fCTM.isIdentity());
872        REPORTER_ASSERT(reporter, 0 == info0.fOffset.fX && 0 == info0.fOffset.fY);
873        REPORTER_ASSERT(reporter, NULL != info0.fPaint);
874        REPORTER_ASSERT(reporter, !info0.fIsNested && !info0.fHasNestedLayers);
875
876        REPORTER_ASSERT(reporter, info1.fValid);
877        REPORTER_ASSERT(reporter, kWidth == info1.fSize.fWidth && kHeight == info1.fSize.fHeight);
878        REPORTER_ASSERT(reporter, info1.fCTM.isIdentity());
879        REPORTER_ASSERT(reporter, 0 == info1.fOffset.fX && 0 == info1.fOffset.fY);
880        REPORTER_ASSERT(reporter, NULL != info1.fPaint);
881        REPORTER_ASSERT(reporter, !info1.fIsNested && info1.fHasNestedLayers); // has a nested SL
882
883        REPORTER_ASSERT(reporter, info2.fValid);
884        REPORTER_ASSERT(reporter, kWidth/2 == info2.fSize.fWidth &&
885                                  kHeight/2 == info2.fSize.fHeight); // bound reduces size
886        REPORTER_ASSERT(reporter, info2.fCTM.isIdentity());         // translated
887        REPORTER_ASSERT(reporter, kWidth/2 == info2.fOffset.fX &&
888                                  kHeight/2 == info2.fOffset.fY);
889        REPORTER_ASSERT(reporter, NULL != info1.fPaint);
890        REPORTER_ASSERT(reporter, info2.fIsNested && !info2.fHasNestedLayers); // is nested
891
892        REPORTER_ASSERT(reporter, info3.fValid);
893        REPORTER_ASSERT(reporter, kWidth == info3.fSize.fWidth && kHeight == info3.fSize.fHeight);
894        REPORTER_ASSERT(reporter, info3.fCTM.isIdentity());
895        REPORTER_ASSERT(reporter, 0 == info3.fOffset.fX && 0 == info3.fOffset.fY);
896        REPORTER_ASSERT(reporter, NULL != info3.fPaint);
897        REPORTER_ASSERT(reporter, !info3.fIsNested && !info3.fHasNestedLayers);
898
899#if 0 // needs more though for GrGatherCanvas
900        REPORTER_ASSERT(reporter, !info4.fValid);                 // paint is/was uncopyable
901        REPORTER_ASSERT(reporter, kWidth == info4.fSize.fWidth && kHeight == info4.fSize.fHeight);
902        REPORTER_ASSERT(reporter, 0 == info4.fOffset.fX && 0 == info4.fOffset.fY);
903        REPORTER_ASSERT(reporter, info4.fCTM.isIdentity());
904        REPORTER_ASSERT(reporter, NULL == info4.fPaint);     // paint is/was uncopyable
905        REPORTER_ASSERT(reporter, !info4.fIsNested && !info4.fHasNestedLayers);
906#endif
907    }
908}
909
910#endif
911
912static void set_canvas_to_save_count_4(SkCanvas* canvas) {
913    canvas->restoreToCount(1);
914    canvas->save();
915    canvas->save();
916    canvas->save();
917}
918
919static void test_unbalanced_save_restores(skiatest::Reporter* reporter) {
920    SkCanvas testCanvas(100, 100);
921    set_canvas_to_save_count_4(&testCanvas);
922
923    REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
924
925    SkPaint paint;
926    SkRect rect = SkRect::MakeLTRB(-10000000, -10000000, 10000000, 10000000);
927
928    SkPictureRecorder recorder;
929
930    {
931        // Create picture with 2 unbalanced saves
932        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
933        canvas->save();
934        canvas->translate(10, 10);
935        canvas->drawRect(rect, paint);
936        canvas->save();
937        canvas->translate(10, 10);
938        canvas->drawRect(rect, paint);
939        SkAutoTUnref<SkPicture> extraSavePicture(recorder.endRecording());
940
941        testCanvas.drawPicture(*extraSavePicture);
942        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
943    }
944
945    set_canvas_to_save_count_4(&testCanvas);
946
947    {
948        // Create picture with 2 unbalanced restores
949        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
950        canvas->save();
951        canvas->translate(10, 10);
952        canvas->drawRect(rect, paint);
953        canvas->save();
954        canvas->translate(10, 10);
955        canvas->drawRect(rect, paint);
956        canvas->restore();
957        canvas->restore();
958        canvas->restore();
959        canvas->restore();
960        SkAutoTUnref<SkPicture> extraRestorePicture(recorder.endRecording());
961
962        testCanvas.drawPicture(*extraRestorePicture);
963        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
964    }
965
966    set_canvas_to_save_count_4(&testCanvas);
967
968    {
969        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
970        canvas->translate(10, 10);
971        canvas->drawRect(rect, paint);
972        SkAutoTUnref<SkPicture> noSavePicture(recorder.endRecording());
973
974        testCanvas.drawPicture(*noSavePicture);
975        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
976        REPORTER_ASSERT(reporter, testCanvas.getTotalMatrix().isIdentity());
977    }
978}
979
980static void test_peephole() {
981    SkRandom rand;
982
983    SkPictureRecorder recorder;
984
985    for (int j = 0; j < 100; j++) {
986        SkRandom rand2(rand); // remember the seed
987
988        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
989
990        for (int i = 0; i < 1000; ++i) {
991            rand_op(canvas, rand);
992        }
993        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
994
995        rand = rand2;
996    }
997
998    {
999        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
1000        SkRect rect = SkRect::MakeWH(50, 50);
1001
1002        for (int i = 0; i < 100; ++i) {
1003            canvas->save();
1004        }
1005        while (canvas->getSaveCount() > 1) {
1006            canvas->clipRect(rect);
1007            canvas->restore();
1008        }
1009        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1010    }
1011}
1012
1013#ifndef SK_DEBUG
1014// Only test this is in release mode. We deliberately crash in debug mode, since a valid caller
1015// should never do this.
1016static void test_bad_bitmap() {
1017    // This bitmap has a width and height but no pixels. As a result, attempting to record it will
1018    // fail.
1019    SkBitmap bm;
1020    bm.setConfig(SkImageInfo::MakeN32Premul(100, 100));
1021    SkPictureRecorder recorder;
1022    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100, NULL, 0);
1023    recordingCanvas->drawBitmap(bm, 0, 0);
1024    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1025
1026    SkCanvas canvas;
1027    canvas.drawPicture(*picture);
1028}
1029#endif
1030
1031static SkData* encode_bitmap_to_data(size_t*, const SkBitmap& bm) {
1032    return SkImageEncoder::EncodeData(bm, SkImageEncoder::kPNG_Type, 100);
1033}
1034
1035static SkData* serialized_picture_from_bitmap(const SkBitmap& bitmap) {
1036    SkPictureRecorder recorder;
1037    SkCanvas* canvas = recorder.beginRecording(bitmap.width(), bitmap.height(), NULL, 0);
1038    canvas->drawBitmap(bitmap, 0, 0);
1039    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1040
1041    SkDynamicMemoryWStream wStream;
1042    picture->serialize(&wStream, &encode_bitmap_to_data);
1043    return wStream.copyToData();
1044}
1045
1046struct ErrorContext {
1047    int fErrors;
1048    skiatest::Reporter* fReporter;
1049};
1050
1051static void assert_one_parse_error_cb(SkError error, void* context) {
1052    ErrorContext* errorContext = static_cast<ErrorContext*>(context);
1053    errorContext->fErrors++;
1054    // This test only expects one error, and that is a kParseError. If there are others,
1055    // there is some unknown problem.
1056    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, 1 == errorContext->fErrors,
1057                            "This threw more errors than expected.");
1058    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, kParseError_SkError == error,
1059                            SkGetLastErrorString());
1060}
1061
1062static void test_bitmap_with_encoded_data(skiatest::Reporter* reporter) {
1063    // Create a bitmap that will be encoded.
1064    SkBitmap original;
1065    make_bm(&original, 100, 100, SK_ColorBLUE, true);
1066    SkDynamicMemoryWStream wStream;
1067    if (!SkImageEncoder::EncodeStream(&wStream, original, SkImageEncoder::kPNG_Type, 100)) {
1068        return;
1069    }
1070    SkAutoDataUnref data(wStream.copyToData());
1071
1072    SkBitmap bm;
1073    bool installSuccess = SkInstallDiscardablePixelRef(
1074         SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options()), &bm, NULL);
1075    REPORTER_ASSERT(reporter, installSuccess);
1076
1077    // Write both bitmaps to pictures, and ensure that the resulting data streams are the same.
1078    // Flattening original will follow the old path of performing an encode, while flattening bm
1079    // will use the already encoded data.
1080    SkAutoDataUnref picture1(serialized_picture_from_bitmap(original));
1081    SkAutoDataUnref picture2(serialized_picture_from_bitmap(bm));
1082    REPORTER_ASSERT(reporter, picture1->equals(picture2));
1083    // Now test that a parse error was generated when trying to create a new SkPicture without
1084    // providing a function to decode the bitmap.
1085    ErrorContext context;
1086    context.fErrors = 0;
1087    context.fReporter = reporter;
1088    SkSetErrorCallback(assert_one_parse_error_cb, &context);
1089    SkMemoryStream pictureStream(picture1);
1090    SkClearLastError();
1091    SkAutoUnref pictureFromStream(SkPicture::CreateFromStream(&pictureStream, NULL));
1092    REPORTER_ASSERT(reporter, pictureFromStream.get() != NULL);
1093    SkClearLastError();
1094    SkSetErrorCallback(NULL, NULL);
1095}
1096
1097static void test_clone_empty(skiatest::Reporter* reporter) {
1098    // This is a regression test for crbug.com/172062
1099    // Before the fix, we used to crash accessing a null pointer when we
1100    // had a picture with no paints. This test passes by not crashing.
1101    {
1102        SkPictureRecorder recorder;
1103        recorder.beginRecording(1, 1, NULL, 0);
1104        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1105        SkAutoTUnref<SkPicture> destPicture(picture->clone());
1106        REPORTER_ASSERT(reporter, NULL != destPicture);
1107    }
1108}
1109
1110static void test_draw_empty(skiatest::Reporter* reporter) {
1111    SkBitmap result;
1112    make_bm(&result, 2, 2, SK_ColorBLACK, false);
1113
1114    SkCanvas canvas(result);
1115
1116    {
1117        // stock SkPicture
1118        SkPictureRecorder recorder;
1119        recorder.beginRecording(1, 1, NULL, 0);
1120        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1121
1122        canvas.drawPicture(*picture);
1123    }
1124
1125    {
1126        // tile grid
1127        SkTileGridFactory::TileGridInfo gridInfo;
1128        gridInfo.fMargin.setEmpty();
1129        gridInfo.fOffset.setZero();
1130        gridInfo.fTileInterval.set(1, 1);
1131
1132        SkTileGridFactory factory(gridInfo);
1133        SkPictureRecorder recorder;
1134        recorder.beginRecording(1, 1, &factory, 0);
1135        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1136
1137        canvas.drawPicture(*picture);
1138    }
1139
1140    {
1141        // RTree
1142        SkRTreeFactory factory;
1143        SkPictureRecorder recorder;
1144        recorder.beginRecording(1, 1, &factory, 0);
1145        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1146
1147        canvas.drawPicture(*picture);
1148    }
1149
1150    {
1151        // quad tree
1152        SkQuadTreeFactory factory;
1153        SkPictureRecorder recorder;
1154        recorder.beginRecording(1, 1, &factory, 0);
1155        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1156
1157        canvas.drawPicture(*picture);
1158    }
1159}
1160
1161static void test_clip_bound_opt(skiatest::Reporter* reporter) {
1162    // Test for crbug.com/229011
1163    SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(4), SkIntToScalar(4),
1164                                    SkIntToScalar(2), SkIntToScalar(2));
1165    SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(7), SkIntToScalar(7),
1166                                    SkIntToScalar(1), SkIntToScalar(1));
1167    SkRect rect3 = SkRect::MakeXYWH(SkIntToScalar(6), SkIntToScalar(6),
1168                                    SkIntToScalar(1), SkIntToScalar(1));
1169
1170    SkPath invPath;
1171    invPath.addOval(rect1);
1172    invPath.setFillType(SkPath::kInverseEvenOdd_FillType);
1173    SkPath path;
1174    path.addOval(rect2);
1175    SkPath path2;
1176    path2.addOval(rect3);
1177    SkIRect clipBounds;
1178    SkPictureRecorder recorder;
1179    // Minimalist test set for 100% code coverage of
1180    // SkPictureRecord::updateClipConservativelyUsingBounds
1181    {
1182        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL,
1183            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1184        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
1185        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1186        REPORTER_ASSERT(reporter, true == nonEmpty);
1187        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1188        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1189        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1190        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1191    }
1192    {
1193        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL,
1194            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1195        canvas->clipPath(path, SkRegion::kIntersect_Op);
1196        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
1197        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1198        REPORTER_ASSERT(reporter, true == nonEmpty);
1199        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1200        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1201        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1202        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1203    }
1204    {
1205        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL,
1206            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1207        canvas->clipPath(path, SkRegion::kIntersect_Op);
1208        canvas->clipPath(invPath, SkRegion::kUnion_Op);
1209        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1210        REPORTER_ASSERT(reporter, true == nonEmpty);
1211        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1212        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1213        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1214        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1215    }
1216    {
1217        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL,
1218            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1219        canvas->clipPath(path, SkRegion::kDifference_Op);
1220        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1221        REPORTER_ASSERT(reporter, true == nonEmpty);
1222        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1223        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1224        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1225        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1226    }
1227    {
1228        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL,
1229            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1230        canvas->clipPath(path, SkRegion::kReverseDifference_Op);
1231        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1232        // True clip is actually empty in this case, but the best
1233        // determination we can make using only bounds as input is that the
1234        // clip is included in the bounds of 'path'.
1235        REPORTER_ASSERT(reporter, true == nonEmpty);
1236        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1237        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1238        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1239        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1240    }
1241    {
1242        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL,
1243            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1244        canvas->clipPath(path, SkRegion::kIntersect_Op);
1245        canvas->clipPath(path2, SkRegion::kXOR_Op);
1246        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1247        REPORTER_ASSERT(reporter, true == nonEmpty);
1248        REPORTER_ASSERT(reporter, 6 == clipBounds.fLeft);
1249        REPORTER_ASSERT(reporter, 6 == clipBounds.fTop);
1250        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1251        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1252    }
1253}
1254
1255/**
1256 * A canvas that records the number of clip commands.
1257 */
1258class ClipCountingCanvas : public SkCanvas {
1259public:
1260    explicit ClipCountingCanvas(int width, int height)
1261        : INHERITED(width, height)
1262        , fClipCount(0){
1263    }
1264
1265    virtual void onClipRect(const SkRect& r,
1266                            SkRegion::Op op,
1267                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1268        fClipCount += 1;
1269        this->INHERITED::onClipRect(r, op, edgeStyle);
1270    }
1271
1272    virtual void onClipRRect(const SkRRect& rrect,
1273                             SkRegion::Op op,
1274                             ClipEdgeStyle edgeStyle)SK_OVERRIDE {
1275        fClipCount += 1;
1276        this->INHERITED::onClipRRect(rrect, op, edgeStyle);
1277    }
1278
1279    virtual void onClipPath(const SkPath& path,
1280                            SkRegion::Op op,
1281                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1282        fClipCount += 1;
1283        this->INHERITED::onClipPath(path, op, edgeStyle);
1284    }
1285
1286    virtual void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) SK_OVERRIDE {
1287        fClipCount += 1;
1288        this->INHERITED::onClipRegion(deviceRgn, op);
1289    }
1290
1291    unsigned getClipCount() const { return fClipCount; }
1292
1293private:
1294    unsigned fClipCount;
1295
1296    typedef SkCanvas INHERITED;
1297};
1298
1299static void test_clip_expansion(skiatest::Reporter* reporter) {
1300    SkPictureRecorder recorder;
1301    SkCanvas* canvas = recorder.beginRecording(10, 10, NULL, 0);
1302
1303    canvas->clipRect(SkRect::MakeEmpty(), SkRegion::kReplace_Op);
1304    // The following expanding clip should not be skipped.
1305    canvas->clipRect(SkRect::MakeXYWH(4, 4, 3, 3), SkRegion::kUnion_Op);
1306    // Draw something so the optimizer doesn't just fold the world.
1307    SkPaint p;
1308    p.setColor(SK_ColorBLUE);
1309    canvas->drawPaint(p);
1310    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1311
1312    ClipCountingCanvas testCanvas(10, 10);
1313    picture->draw(&testCanvas);
1314
1315    // Both clips should be present on playback.
1316    REPORTER_ASSERT(reporter, testCanvas.getClipCount() == 2);
1317}
1318
1319static void test_hierarchical(skiatest::Reporter* reporter) {
1320    SkBitmap bm;
1321    make_bm(&bm, 10, 10, SK_ColorRED, true);
1322
1323    SkPictureRecorder recorder;
1324
1325    recorder.beginRecording(10, 10, NULL, 0);
1326    SkAutoTUnref<SkPicture> childPlain(recorder.endRecording());
1327    REPORTER_ASSERT(reporter, !childPlain->willPlayBackBitmaps()); // 0
1328
1329    recorder.beginRecording(10, 10, NULL, 0)->drawBitmap(bm, 0, 0);
1330    SkAutoTUnref<SkPicture> childWithBitmap(recorder.endRecording());
1331    REPORTER_ASSERT(reporter, childWithBitmap->willPlayBackBitmaps()); // 1
1332
1333    {
1334        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL, 0);
1335        canvas->drawPicture(*childPlain);
1336        SkAutoTUnref<SkPicture> parentPP(recorder.endRecording());
1337        REPORTER_ASSERT(reporter, !parentPP->willPlayBackBitmaps()); // 0
1338    }
1339    {
1340        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL, 0);
1341        canvas->drawPicture(*childWithBitmap);
1342        SkAutoTUnref<SkPicture> parentPWB(recorder.endRecording());
1343        REPORTER_ASSERT(reporter, parentPWB->willPlayBackBitmaps()); // 1
1344    }
1345    {
1346        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL, 0);
1347        canvas->drawBitmap(bm, 0, 0);
1348        canvas->drawPicture(*childPlain);
1349        SkAutoTUnref<SkPicture> parentWBP(recorder.endRecording());
1350        REPORTER_ASSERT(reporter, parentWBP->willPlayBackBitmaps()); // 1
1351    }
1352    {
1353        SkCanvas* canvas = recorder.beginRecording(10, 10, NULL, 0);
1354        canvas->drawBitmap(bm, 0, 0);
1355        canvas->drawPicture(*childWithBitmap);
1356        SkAutoTUnref<SkPicture> parentWBWB(recorder.endRecording());
1357        REPORTER_ASSERT(reporter, parentWBWB->willPlayBackBitmaps()); // 2
1358    }
1359}
1360
1361static void test_gen_id(skiatest::Reporter* reporter) {
1362
1363    SkPicture empty;
1364
1365    // Empty pictures should still have a valid ID
1366    REPORTER_ASSERT(reporter, empty.uniqueID() != SK_InvalidGenID);
1367
1368    SkPictureRecorder recorder;
1369
1370    SkCanvas* canvas = recorder.beginRecording(1, 1, NULL, 0);
1371    canvas->drawARGB(255, 255, 255, 255);
1372    SkAutoTUnref<SkPicture> hasData(recorder.endRecording());
1373    // picture should have a non-zero id after recording
1374    REPORTER_ASSERT(reporter, hasData->uniqueID() != SK_InvalidGenID);
1375
1376    // both pictures should have different ids
1377    REPORTER_ASSERT(reporter, hasData->uniqueID() != empty.uniqueID());
1378
1379    // test out copy constructor
1380    SkPicture copyWithData(*hasData);
1381    REPORTER_ASSERT(reporter, hasData->uniqueID() == copyWithData.uniqueID());
1382
1383    SkPicture emptyCopy(empty);
1384    REPORTER_ASSERT(reporter, empty.uniqueID() != emptyCopy.uniqueID());
1385
1386    // test out swap
1387    {
1388        SkPicture swapWithData;
1389        uint32_t beforeID1 = swapWithData.uniqueID();
1390        uint32_t beforeID2 = copyWithData.uniqueID();
1391        swapWithData.swap(copyWithData);
1392        REPORTER_ASSERT(reporter, copyWithData.uniqueID() == beforeID1);
1393        REPORTER_ASSERT(reporter, swapWithData.uniqueID() == beforeID2);
1394    }
1395
1396    // test out clone
1397    {
1398        SkAutoTUnref<SkPicture> cloneWithData(hasData->clone());
1399        REPORTER_ASSERT(reporter, hasData->uniqueID() == cloneWithData->uniqueID());
1400
1401        SkAutoTUnref<SkPicture> emptyClone(empty.clone());
1402        REPORTER_ASSERT(reporter, empty.uniqueID() != emptyClone->uniqueID());
1403    }
1404}
1405
1406DEF_TEST(Picture, reporter) {
1407#ifdef SK_DEBUG
1408    test_deleting_empty_playback();
1409    test_serializing_empty_picture();
1410#else
1411    test_bad_bitmap();
1412#endif
1413    test_unbalanced_save_restores(reporter);
1414    test_peephole();
1415#if SK_SUPPORT_GPU
1416    test_gpu_veto(reporter);
1417#endif
1418    test_gatherpixelrefs(reporter);
1419    test_gatherpixelrefsandrects(reporter);
1420    test_bitmap_with_encoded_data(reporter);
1421    test_clone_empty(reporter);
1422    test_draw_empty(reporter);
1423    test_clip_bound_opt(reporter);
1424    test_clip_expansion(reporter);
1425    test_hierarchical(reporter);
1426    test_gen_id(reporter);
1427}
1428
1429#if SK_SUPPORT_GPU
1430DEF_GPUTEST(GPUPicture, reporter, factory) {
1431    test_gpu_picture_optimization(reporter, factory);
1432}
1433#endif
1434
1435static void draw_bitmaps(const SkBitmap bitmap, SkCanvas* canvas) {
1436    const SkPaint paint;
1437    const SkRect rect = { 5.0f, 5.0f, 8.0f, 8.0f };
1438    const SkIRect irect =  { 2, 2, 3, 3 };
1439
1440    // Don't care what these record, as long as they're legal.
1441    canvas->drawBitmap(bitmap, 0.0f, 0.0f, &paint);
1442    canvas->drawBitmapRectToRect(bitmap, &rect, rect, &paint, SkCanvas::kNone_DrawBitmapRectFlag);
1443    canvas->drawBitmapMatrix(bitmap, SkMatrix::I(), &paint);
1444    canvas->drawBitmapNine(bitmap, irect, rect, &paint);
1445    canvas->drawSprite(bitmap, 1, 1);
1446}
1447
1448static void test_draw_bitmaps(SkCanvas* canvas) {
1449    SkBitmap empty;
1450    draw_bitmaps(empty, canvas);
1451    empty.setConfig(SkImageInfo::MakeN32Premul(10, 10));
1452    draw_bitmaps(empty, canvas);
1453}
1454
1455DEF_TEST(Picture_EmptyBitmap, r) {
1456    SkPictureRecorder recorder;
1457    test_draw_bitmaps(recorder.beginRecording(10, 10, NULL, 0));
1458    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1459}
1460
1461DEF_TEST(Canvas_EmptyBitmap, r) {
1462    SkBitmap dst;
1463    dst.allocN32Pixels(10, 10);
1464    SkCanvas canvas(dst);
1465
1466    test_draw_bitmaps(&canvas);
1467}
1468