PictureTest.cpp revision 84b18c7e3e042bf206e1ace3d1b6ea5bb929fe51 
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 "SkCanvas.h"
10#include "SkColorPriv.h"
11#include "SkData.h"
12#include "SkDecodingImageGenerator.h"
13#include "SkError.h"
14#include "SkImageEncoder.h"
15#include "SkImageGenerator.h"
16#include "SkPaint.h"
17#include "SkPicture.h"
18#include "SkPictureUtils.h"
19#include "SkQuadTreePicture.h"
20#include "SkRRect.h"
21#include "SkRandom.h"
22#include "SkShader.h"
23#include "SkStream.h"
24#include "SkTileGrid.h"
25#include "Test.h"
26
27static const int gColorScale = 30;
28static const int gColorOffset = 60;
29
30static void make_bm(SkBitmap* bm, int w, int h, SkColor color, bool immutable) {
31    bm->allocN32Pixels(w, h);
32    bm->eraseColor(color);
33    if (immutable) {
34        bm->setImmutable();
35    }
36}
37
38static void make_checkerboard(SkBitmap* bm, int w, int h, bool immutable) {
39    SkASSERT(w % 2 == 0);
40    SkASSERT(h % 2 == 0);
41    bm->allocPixels(SkImageInfo::Make(w, h, kAlpha_8_SkColorType,
42                                      kPremul_SkAlphaType));
43    SkAutoLockPixels lock(*bm);
44    for (int y = 0; y < h; y += 2) {
45        uint8_t* s = bm->getAddr8(0, y);
46        for (int x = 0; x < w; x += 2) {
47            *s++ = 0xFF;
48            *s++ = 0x00;
49        }
50        s = bm->getAddr8(0, y + 1);
51        for (int x = 0; x < w; x += 2) {
52            *s++ = 0x00;
53            *s++ = 0xFF;
54        }
55    }
56    if (immutable) {
57        bm->setImmutable();
58    }
59}
60
61static void init_paint(SkPaint* paint, const SkBitmap &bm) {
62    SkShader* shader = SkShader::CreateBitmapShader(bm,
63                                                    SkShader::kClamp_TileMode,
64                                                    SkShader::kClamp_TileMode);
65    paint->setShader(shader)->unref();
66}
67
68typedef void (*DrawBitmapProc)(SkCanvas*, const SkBitmap&,
69                               const SkBitmap&, const SkPoint&,
70                               SkTDArray<SkPixelRef*>* usedPixRefs);
71
72static void drawpaint_proc(SkCanvas* canvas, const SkBitmap& bm,
73                           const SkBitmap& altBM, const SkPoint& pos,
74                           SkTDArray<SkPixelRef*>* usedPixRefs) {
75    SkPaint paint;
76    init_paint(&paint, bm);
77
78    canvas->drawPaint(paint);
79    *usedPixRefs->append() = bm.pixelRef();
80}
81
82static void drawpoints_proc(SkCanvas* canvas, const SkBitmap& bm,
83                            const SkBitmap& altBM, const SkPoint& pos,
84                            SkTDArray<SkPixelRef*>* usedPixRefs) {
85    SkPaint paint;
86    init_paint(&paint, bm);
87
88    // draw a rect
89    SkPoint points[5] = {
90        { pos.fX, pos.fY },
91        { pos.fX + bm.width() - 1, pos.fY },
92        { pos.fX + bm.width() - 1, pos.fY + bm.height() - 1 },
93        { pos.fX, pos.fY + bm.height() - 1 },
94        { pos.fX, pos.fY },
95    };
96
97    canvas->drawPoints(SkCanvas::kPolygon_PointMode, 5, points, paint);
98    *usedPixRefs->append() = bm.pixelRef();
99}
100
101static void drawrect_proc(SkCanvas* canvas, const SkBitmap& bm,
102                          const SkBitmap& altBM, const SkPoint& pos,
103                          SkTDArray<SkPixelRef*>* usedPixRefs) {
104    SkPaint paint;
105    init_paint(&paint, bm);
106
107    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
108    r.offset(pos.fX, pos.fY);
109
110    canvas->drawRect(r, paint);
111    *usedPixRefs->append() = bm.pixelRef();
112}
113
114static void drawoval_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->drawOval(r, paint);
124    *usedPixRefs->append() = bm.pixelRef();
125}
126
127static void drawrrect_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    SkRRect rr;
137    rr.setRectXY(r, SkIntToScalar(bm.width())/4, SkIntToScalar(bm.height())/4);
138    canvas->drawRRect(rr, paint);
139    *usedPixRefs->append() = bm.pixelRef();
140}
141
142static void drawpath_proc(SkCanvas* canvas, const SkBitmap& bm,
143                          const SkBitmap& altBM, const SkPoint& pos,
144                          SkTDArray<SkPixelRef*>* usedPixRefs) {
145    SkPaint paint;
146    init_paint(&paint, bm);
147
148    SkPath path;
149    path.lineTo(bm.width()/2.0f, SkIntToScalar(bm.height()));
150    path.lineTo(SkIntToScalar(bm.width()), 0);
151    path.close();
152    path.offset(pos.fX, pos.fY);
153
154    canvas->drawPath(path, paint);
155    *usedPixRefs->append() = bm.pixelRef();
156}
157
158static void drawbitmap_proc(SkCanvas* canvas, const SkBitmap& bm,
159                            const SkBitmap& altBM, const SkPoint& pos,
160                            SkTDArray<SkPixelRef*>* usedPixRefs) {
161    canvas->drawBitmap(bm, pos.fX, pos.fY, NULL);
162    *usedPixRefs->append() = bm.pixelRef();
163}
164
165static void drawbitmap_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
166                                       const SkBitmap& altBM, const SkPoint& pos,
167                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
168    SkPaint paint;
169    init_paint(&paint, bm);
170
171    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
172    canvas->drawBitmap(altBM, pos.fX, pos.fY, &paint);
173    *usedPixRefs->append() = bm.pixelRef();
174    *usedPixRefs->append() = altBM.pixelRef();
175}
176
177static void drawsprite_proc(SkCanvas* canvas, const SkBitmap& bm,
178                            const SkBitmap& altBM, const SkPoint& pos,
179                            SkTDArray<SkPixelRef*>* usedPixRefs) {
180    const SkMatrix& ctm = canvas->getTotalMatrix();
181
182    SkPoint p(pos);
183    ctm.mapPoints(&p, 1);
184
185    canvas->drawSprite(bm, (int)p.fX, (int)p.fY, NULL);
186    *usedPixRefs->append() = bm.pixelRef();
187}
188
189#if 0
190// Although specifiable, this case doesn't seem to make sense (i.e., the
191// bitmap in the shader is never used).
192static void drawsprite_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
193                                       const SkBitmap& altBM, const SkPoint& pos,
194                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
195    SkPaint paint;
196    init_paint(&paint, bm);
197
198    const SkMatrix& ctm = canvas->getTotalMatrix();
199
200    SkPoint p(pos);
201    ctm.mapPoints(&p, 1);
202
203    canvas->drawSprite(altBM, (int)p.fX, (int)p.fY, &paint);
204    *usedPixRefs->append() = bm.pixelRef();
205    *usedPixRefs->append() = altBM.pixelRef();
206}
207#endif
208
209static void drawbitmaprect_proc(SkCanvas* canvas, const SkBitmap& bm,
210                                const SkBitmap& altBM, const SkPoint& pos,
211                                SkTDArray<SkPixelRef*>* usedPixRefs) {
212    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
213
214    r.offset(pos.fX, pos.fY);
215    canvas->drawBitmapRectToRect(bm, NULL, r, NULL);
216    *usedPixRefs->append() = bm.pixelRef();
217}
218
219static void drawbitmaprect_withshader_proc(SkCanvas* canvas,
220                                           const SkBitmap& bm,
221                                           const SkBitmap& altBM,
222                                           const SkPoint& pos,
223                                           SkTDArray<SkPixelRef*>* usedPixRefs) {
224    SkPaint paint;
225    init_paint(&paint, bm);
226
227    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
228    r.offset(pos.fX, pos.fY);
229
230    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
231    canvas->drawBitmapRectToRect(altBM, NULL, r, &paint);
232    *usedPixRefs->append() = bm.pixelRef();
233    *usedPixRefs->append() = altBM.pixelRef();
234}
235
236static void drawtext_proc(SkCanvas* canvas, const SkBitmap& bm,
237                          const SkBitmap& altBM, const SkPoint& pos,
238                          SkTDArray<SkPixelRef*>* usedPixRefs) {
239    SkPaint paint;
240    init_paint(&paint, bm);
241    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
242
243    canvas->drawText("0", 1, pos.fX, pos.fY+bm.width(), paint);
244    *usedPixRefs->append() = bm.pixelRef();
245}
246
247static void drawpostext_proc(SkCanvas* canvas, const SkBitmap& bm,
248                             const SkBitmap& altBM, const SkPoint& pos,
249                             SkTDArray<SkPixelRef*>* usedPixRefs) {
250    SkPaint paint;
251    init_paint(&paint, bm);
252    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
253
254    SkPoint point = { pos.fX, pos.fY + bm.height() };
255    canvas->drawPosText("O", 1, &point, paint);
256    *usedPixRefs->append() = bm.pixelRef();
257}
258
259static void drawtextonpath_proc(SkCanvas* canvas, const SkBitmap& bm,
260                                const SkBitmap& altBM, const SkPoint& pos,
261                                SkTDArray<SkPixelRef*>* usedPixRefs) {
262    SkPaint paint;
263
264    init_paint(&paint, bm);
265    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
266
267    SkPath path;
268    path.lineTo(SkIntToScalar(bm.width()), 0);
269    path.offset(pos.fX, pos.fY+bm.height());
270
271    canvas->drawTextOnPath("O", 1, path, NULL, paint);
272    *usedPixRefs->append() = bm.pixelRef();
273}
274
275static void drawverts_proc(SkCanvas* canvas, const SkBitmap& bm,
276                           const SkBitmap& altBM, const SkPoint& pos,
277                           SkTDArray<SkPixelRef*>* usedPixRefs) {
278    SkPaint paint;
279    init_paint(&paint, bm);
280
281    SkPoint verts[4] = {
282        { pos.fX, pos.fY },
283        { pos.fX + bm.width(), pos.fY },
284        { pos.fX + bm.width(), pos.fY + bm.height() },
285        { pos.fX, pos.fY + bm.height() }
286    };
287    SkPoint texs[4] = { { 0, 0 },
288                        { SkIntToScalar(bm.width()), 0 },
289                        { SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) },
290                        { 0, SkIntToScalar(bm.height()) } };
291    uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
292
293    canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 4, verts, texs, NULL, NULL,
294                         indices, 6, paint);
295    *usedPixRefs->append() = bm.pixelRef();
296}
297
298// Return a picture with the bitmaps drawn at the specified positions.
299static SkPicture* record_bitmaps(const SkBitmap bm[],
300                                 const SkPoint pos[],
301                                 SkTDArray<SkPixelRef*> analytic[],
302                                 int count,
303                                 DrawBitmapProc proc) {
304    SkPictureRecorder recorder;
305    SkCanvas* canvas = recorder.beginRecording(1000, 1000);
306    for (int i = 0; i < count; ++i) {
307        analytic[i].rewind();
308        canvas->save();
309        SkRect clipRect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY,
310                                           SkIntToScalar(bm[i].width()),
311                                           SkIntToScalar(bm[i].height()));
312        canvas->clipRect(clipRect, SkRegion::kIntersect_Op);
313        proc(canvas, bm[i], bm[count+i], pos[i], &analytic[i]);
314        canvas->restore();
315    }
316    return recorder.endRecording();
317}
318
319static void rand_rect(SkRect* rect, SkRandom& rand, SkScalar W, SkScalar H) {
320    rect->fLeft   = rand.nextRangeScalar(-W, 2*W);
321    rect->fTop    = rand.nextRangeScalar(-H, 2*H);
322    rect->fRight  = rect->fLeft + rand.nextRangeScalar(0, W);
323    rect->fBottom = rect->fTop + rand.nextRangeScalar(0, H);
324
325    // we integralize rect to make our tests more predictable, since Gather is
326    // a little sloppy.
327    SkIRect ir;
328    rect->round(&ir);
329    rect->set(ir);
330}
331
332static void draw(SkPicture* pic, int width, int height, SkBitmap* result) {
333    make_bm(result, width, height, SK_ColorBLACK, false);
334
335    SkCanvas canvas(*result);
336    canvas.drawPicture(*pic);
337}
338
339template <typename T> int find_index(const T* array, T elem, int count) {
340    for (int i = 0; i < count; ++i) {
341        if (array[i] == elem) {
342            return i;
343        }
344    }
345    return -1;
346}
347
348// Return true if 'ref' is found in array[]
349static bool find(SkPixelRef const * const * array, SkPixelRef const * ref, int count) {
350    return find_index<const SkPixelRef*>(array, ref, count) >= 0;
351}
352
353// Look at each pixel that is inside 'subset', and if its color appears in
354// colors[], find the corresponding value in refs[] and append that ref into
355// array, skipping duplicates of the same value.
356// Note that gathering pixelRefs from rendered colors suffers from the problem
357// that multiple simultaneous textures (e.g., A8 for alpha and 8888 for color)
358// isn't easy to reconstruct.
359static void gather_from_image(const SkBitmap& bm, SkPixelRef* const refs[],
360                              int count, SkTDArray<SkPixelRef*>* array,
361                              const SkRect& subset) {
362    SkIRect ir;
363    subset.roundOut(&ir);
364
365    if (!ir.intersect(0, 0, bm.width()-1, bm.height()-1)) {
366        return;
367    }
368
369    // Since we only want to return unique values in array, when we scan we just
370    // set a bit for each index'd color found. In practice we only have a few
371    // distinct colors, so we just use an int's bits as our array. Hence the
372    // assert that count <= number-of-bits-in-our-int.
373    SkASSERT((unsigned)count <= 32);
374    uint32_t bitarray = 0;
375
376    SkAutoLockPixels alp(bm);
377
378    for (int y = ir.fTop; y < ir.fBottom; ++y) {
379        for (int x = ir.fLeft; x < ir.fRight; ++x) {
380            SkPMColor pmc = *bm.getAddr32(x, y);
381            // the only good case where the color is not found would be if
382            // the color is transparent, meaning no bitmap was drawn in that
383            // pixel.
384            if (pmc) {
385                uint32_t index = SkGetPackedR32(pmc);
386                SkASSERT(SkGetPackedG32(pmc) == index);
387                SkASSERT(SkGetPackedB32(pmc) == index);
388                if (0 == index) {
389                    continue;           // background color
390                }
391                SkASSERT(0 == (index - gColorOffset) % gColorScale);
392                index = (index - gColorOffset) / gColorScale;
393                SkASSERT(static_cast<int>(index) < count);
394                bitarray |= 1 << index;
395            }
396        }
397    }
398
399    for (int i = 0; i < count; ++i) {
400        if (bitarray & (1 << i)) {
401            *array->append() = refs[i];
402        }
403    }
404}
405
406static void gather_from_analytic(const SkPoint pos[], SkScalar w, SkScalar h,
407                                 const SkTDArray<SkPixelRef*> analytic[],
408                                 int count,
409                                 SkTDArray<SkPixelRef*>* result,
410                                 const SkRect& subset) {
411    for (int i = 0; i < count; ++i) {
412        SkRect rect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY, w, h);
413
414        if (SkRect::Intersects(subset, rect)) {
415            result->append(analytic[i].count(), analytic[i].begin());
416        }
417    }
418}
419
420
421static const struct {
422    const DrawBitmapProc proc;
423    const char* const desc;
424} gProcs[] = {
425    {drawpaint_proc, "drawpaint"},
426    {drawpoints_proc, "drawpoints"},
427    {drawrect_proc, "drawrect"},
428    {drawoval_proc, "drawoval"},
429    {drawrrect_proc, "drawrrect"},
430    {drawpath_proc, "drawpath"},
431    {drawbitmap_proc, "drawbitmap"},
432    {drawbitmap_withshader_proc, "drawbitmap_withshader"},
433    {drawsprite_proc, "drawsprite"},
434#if 0
435    {drawsprite_withshader_proc, "drawsprite_withshader"},
436#endif
437    {drawbitmaprect_proc, "drawbitmaprect"},
438    {drawbitmaprect_withshader_proc, "drawbitmaprect_withshader"},
439    {drawtext_proc, "drawtext"},
440    {drawpostext_proc, "drawpostext"},
441    {drawtextonpath_proc, "drawtextonpath"},
442    {drawverts_proc, "drawverts"},
443};
444
445static void create_textures(SkBitmap* bm, SkPixelRef** refs, int num, int w, int h) {
446    // Our convention is that the color components contain an encoding of
447    // the index of their corresponding bitmap/pixelref. (0,0,0,0) is
448    // reserved for the background
449    for (int i = 0; i < num; ++i) {
450        make_bm(&bm[i], w, h,
451                SkColorSetARGB(0xFF,
452                               gColorScale*i+gColorOffset,
453                               gColorScale*i+gColorOffset,
454                               gColorScale*i+gColorOffset),
455                true);
456        refs[i] = bm[i].pixelRef();
457    }
458
459    // The A8 alternate bitmaps are all BW checkerboards
460    for (int i = 0; i < num; ++i) {
461        make_checkerboard(&bm[num+i], w, h, true);
462        refs[num+i] = bm[num+i].pixelRef();
463    }
464}
465
466static void test_gatherpixelrefs(skiatest::Reporter* reporter) {
467    const int IW = 32;
468    const int IH = IW;
469    const SkScalar W = SkIntToScalar(IW);
470    const SkScalar H = W;
471
472    static const int N = 4;
473    SkBitmap bm[2*N];
474    SkPixelRef* refs[2*N];
475    SkTDArray<SkPixelRef*> analytic[N];
476
477    const SkPoint pos[N] = {
478        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
479    };
480
481    create_textures(bm, refs, N, IW, IH);
482
483    SkRandom rand;
484    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
485        SkAutoTUnref<SkPicture> pic(
486            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
487
488        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
489        // quick check for a small piece of each quadrant, which should just
490        // contain 1 or 2 bitmaps.
491        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
492            SkRect r;
493            r.set(2, 2, W - 2, H - 2);
494            r.offset(pos[i].fX, pos[i].fY);
495            SkAutoDataUnref data(SkPictureUtils::GatherPixelRefs(pic, r));
496            if (!data) {
497                ERRORF(reporter, "SkPictureUtils::GatherPixelRefs returned "
498                       "NULL for %s.", gProcs[k].desc);
499                continue;
500            }
501            SkPixelRef** gatheredRefs = (SkPixelRef**)data->data();
502            int count = static_cast<int>(data->size() / sizeof(SkPixelRef*));
503            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
504            if (1 == count) {
505                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
506            } else if (2 == count) {
507                REPORTER_ASSERT(reporter,
508                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
509                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
510            }
511        }
512
513        SkBitmap image;
514        draw(pic, 2*IW, 2*IH, &image);
515
516        // Test a bunch of random (mostly) rects, and compare the gather results
517        // with a deduced list of refs by looking at the colors drawn.
518        for (int j = 0; j < 100; ++j) {
519            SkRect r;
520            rand_rect(&r, rand, 2*W, 2*H);
521
522            SkTDArray<SkPixelRef*> fromImage;
523            gather_from_image(image, refs, N, &fromImage, r);
524
525            SkTDArray<SkPixelRef*> fromAnalytic;
526            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
527
528            SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
529            size_t dataSize = data ? data->size() : 0;
530            int gatherCount = static_cast<int>(dataSize / sizeof(SkPixelRef*));
531            SkASSERT(gatherCount * sizeof(SkPixelRef*) == dataSize);
532            SkPixelRef** gatherRefs = data ? (SkPixelRef**)(data->data()) : NULL;
533            SkAutoDataUnref adu(data);
534
535            // Everything that we saw drawn should appear in the analytic list
536            // but the analytic list may contain some pixelRefs that were not
537            // seen in the image (e.g., A8 textures used as masks)
538            for (int i = 0; i < fromImage.count(); ++i) {
539                if (-1 == fromAnalytic.find(fromImage[i])) {
540                    ERRORF(reporter, "PixelRef missing %d %s",
541                           i, gProcs[k].desc);
542                }
543            }
544
545            /*
546             *  GatherPixelRefs is conservative, so it can return more bitmaps
547             *  than are strictly required. Thus our check here is only that
548             *  Gather didn't miss any that we actually needed. Even that isn't
549             *  a strict requirement on Gather, which is meant to be quick and
550             *  only mostly-correct, but at the moment this test should work.
551             */
552            for (int i = 0; i < fromAnalytic.count(); ++i) {
553                bool found = find(gatherRefs, fromAnalytic[i], gatherCount);
554                if (!found) {
555                    ERRORF(reporter, "PixelRef missing %d %s",
556                           i, gProcs[k].desc);
557                }
558#if 0
559                // enable this block of code to debug failures, as it will rerun
560                // the case that failed.
561                if (!found) {
562                    SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
563                    size_t dataSize = data ? data->size() : 0;
564                }
565#endif
566            }
567        }
568    }
569}
570
571static void test_gatherpixelrefsandrects(skiatest::Reporter* reporter) {
572    const int IW = 32;
573    const int IH = IW;
574    const SkScalar W = SkIntToScalar(IW);
575    const SkScalar H = W;
576
577    static const int N = 4;
578    SkBitmap bm[2*N];
579    SkPixelRef* refs[2*N];
580    SkTDArray<SkPixelRef*> analytic[N];
581
582    const SkPoint pos[N] = {
583        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
584    };
585
586    create_textures(bm, refs, N, IW, IH);
587
588    SkRandom rand;
589    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
590        SkAutoTUnref<SkPicture> pic(
591            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
592
593        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
594
595        SkAutoTUnref<SkPictureUtils::SkPixelRefContainer> prCont(
596                                new SkPictureUtils::SkPixelRefsAndRectsList);
597
598        SkPictureUtils::GatherPixelRefsAndRects(pic, prCont);
599
600        // quick check for a small piece of each quadrant, which should just
601        // contain 1 or 2 bitmaps.
602        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
603            SkRect r;
604            r.set(2, 2, W - 2, H - 2);
605            r.offset(pos[i].fX, pos[i].fY);
606
607            SkTDArray<SkPixelRef*> gatheredRefs;
608            prCont->query(r, &gatheredRefs);
609
610            int count = gatheredRefs.count();
611            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
612            if (1 == count) {
613                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
614            } else if (2 == count) {
615                REPORTER_ASSERT(reporter,
616                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
617                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
618            }
619        }
620
621        SkBitmap image;
622        draw(pic, 2*IW, 2*IH, &image);
623
624        // Test a bunch of random (mostly) rects, and compare the gather results
625        // with the analytic results and the pixel refs seen in a rendering.
626        for (int j = 0; j < 100; ++j) {
627            SkRect r;
628            rand_rect(&r, rand, 2*W, 2*H);
629
630            SkTDArray<SkPixelRef*> fromImage;
631            gather_from_image(image, refs, N, &fromImage, r);
632
633            SkTDArray<SkPixelRef*> fromAnalytic;
634            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
635
636            SkTDArray<SkPixelRef*> gatheredRefs;
637            prCont->query(r, &gatheredRefs);
638
639            // Everything that we saw drawn should appear in the analytic list
640            // but the analytic list may contain some pixelRefs that were not
641            // seen in the image (e.g., A8 textures used as masks)
642            for (int i = 0; i < fromImage.count(); ++i) {
643                REPORTER_ASSERT(reporter, -1 != fromAnalytic.find(fromImage[i]));
644            }
645
646            // Everything in the analytic list should appear in the gathered
647            // list.
648            for (int i = 0; i < fromAnalytic.count(); ++i) {
649                REPORTER_ASSERT(reporter, -1 != gatheredRefs.find(fromAnalytic[i]));
650            }
651        }
652    }
653}
654
655#ifdef SK_DEBUG
656// Ensure that deleting SkPicturePlayback does not assert. Asserts only fire in debug mode, so only
657// run in debug mode.
658static void test_deleting_empty_playback() {
659    SkPictureRecorder recorder;
660    // Creates an SkPictureRecord
661    recorder.beginRecording(0, 0);
662    // Turns that into an SkPicturePlayback
663    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
664    // Deletes the old SkPicturePlayback, and creates a new SkPictureRecord
665    recorder.beginRecording(0, 0);
666}
667
668// Ensure that serializing an empty picture does not assert. Likewise only runs in debug mode.
669static void test_serializing_empty_picture() {
670    SkPictureRecorder recorder;
671    recorder.beginRecording(0, 0);
672    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
673    SkDynamicMemoryWStream stream;
674    picture->serialize(&stream);
675}
676#endif
677
678static void rand_op(SkCanvas* canvas, SkRandom& rand) {
679    SkPaint paint;
680    SkRect rect = SkRect::MakeWH(50, 50);
681
682    SkScalar unit = rand.nextUScalar1();
683    if (unit <= 0.3) {
684//        SkDebugf("save\n");
685        canvas->save();
686    } else if (unit <= 0.6) {
687//        SkDebugf("restore\n");
688        canvas->restore();
689    } else if (unit <= 0.9) {
690//        SkDebugf("clip\n");
691        canvas->clipRect(rect);
692    } else {
693//        SkDebugf("draw\n");
694        canvas->drawPaint(paint);
695    }
696}
697
698static void set_canvas_to_save_count_4(SkCanvas* canvas) {
699    canvas->restoreToCount(1);
700    canvas->save();
701    canvas->save();
702    canvas->save();
703}
704
705static void test_unbalanced_save_restores(skiatest::Reporter* reporter) {
706    SkCanvas testCanvas(100, 100);
707    set_canvas_to_save_count_4(&testCanvas);
708
709    REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
710
711    SkPaint paint;
712    SkRect rect = SkRect::MakeLTRB(-10000000, -10000000, 10000000, 10000000);
713
714    SkPictureRecorder recorder;
715
716    {
717        // Create picture with 2 unbalanced saves
718        SkCanvas* canvas = recorder.beginRecording(100, 100);
719        canvas->save();
720        canvas->translate(10, 10);
721        canvas->drawRect(rect, paint);
722        canvas->save();
723        canvas->translate(10, 10);
724        canvas->drawRect(rect, paint);
725        SkAutoTUnref<SkPicture> extraSavePicture(recorder.endRecording());
726
727        testCanvas.drawPicture(*extraSavePicture);
728        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
729    }
730
731    set_canvas_to_save_count_4(&testCanvas);
732
733    {
734        // Create picture with 2 unbalanced restores
735        SkCanvas* canvas = recorder.beginRecording(100, 100);
736        canvas->save();
737        canvas->translate(10, 10);
738        canvas->drawRect(rect, paint);
739        canvas->save();
740        canvas->translate(10, 10);
741        canvas->drawRect(rect, paint);
742        canvas->restore();
743        canvas->restore();
744        canvas->restore();
745        canvas->restore();
746        SkAutoTUnref<SkPicture> extraRestorePicture(recorder.endRecording());
747
748        testCanvas.drawPicture(*extraRestorePicture);
749        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
750    }
751
752    set_canvas_to_save_count_4(&testCanvas);
753
754    {
755        SkCanvas* canvas = recorder.beginRecording(100, 100);
756        canvas->translate(10, 10);
757        canvas->drawRect(rect, paint);
758        SkAutoTUnref<SkPicture> noSavePicture(recorder.endRecording());
759
760        testCanvas.drawPicture(*noSavePicture);
761        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
762        REPORTER_ASSERT(reporter, testCanvas.getTotalMatrix().isIdentity());
763    }
764}
765
766static void test_peephole() {
767    SkRandom rand;
768
769    SkPictureRecorder recorder;
770
771    for (int j = 0; j < 100; j++) {
772        SkRandom rand2(rand); // remember the seed
773
774        SkCanvas* canvas = recorder.beginRecording(100, 100);
775
776        for (int i = 0; i < 1000; ++i) {
777            rand_op(canvas, rand);
778        }
779        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
780
781        rand = rand2;
782    }
783
784    {
785        SkCanvas* canvas = recorder.beginRecording(100, 100);
786        SkRect rect = SkRect::MakeWH(50, 50);
787
788        for (int i = 0; i < 100; ++i) {
789            canvas->save();
790        }
791        while (canvas->getSaveCount() > 1) {
792            canvas->clipRect(rect);
793            canvas->restore();
794        }
795        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
796    }
797}
798
799#ifndef SK_DEBUG
800// Only test this is in release mode. We deliberately crash in debug mode, since a valid caller
801// should never do this.
802static void test_bad_bitmap() {
803    // This bitmap has a width and height but no pixels. As a result, attempting to record it will
804    // fail.
805    SkBitmap bm;
806    bm.setConfig(SkImageInfo::MakeN32Premul(100, 100));
807    SkPictureRecorder recorder;
808    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100);
809    recordingCanvas->drawBitmap(bm, 0, 0);
810    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
811
812    SkCanvas canvas;
813    canvas.drawPicture(*picture);
814}
815#endif
816
817static SkData* encode_bitmap_to_data(size_t*, const SkBitmap& bm) {
818    return SkImageEncoder::EncodeData(bm, SkImageEncoder::kPNG_Type, 100);
819}
820
821static SkData* serialized_picture_from_bitmap(const SkBitmap& bitmap) {
822    SkPictureRecorder recorder;
823    SkCanvas* canvas = recorder.beginRecording(bitmap.width(), bitmap.height());
824    canvas->drawBitmap(bitmap, 0, 0);
825    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
826
827    SkDynamicMemoryWStream wStream;
828    picture->serialize(&wStream, &encode_bitmap_to_data);
829    return wStream.copyToData();
830}
831
832struct ErrorContext {
833    int fErrors;
834    skiatest::Reporter* fReporter;
835};
836
837static void assert_one_parse_error_cb(SkError error, void* context) {
838    ErrorContext* errorContext = static_cast<ErrorContext*>(context);
839    errorContext->fErrors++;
840    // This test only expects one error, and that is a kParseError. If there are others,
841    // there is some unknown problem.
842    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, 1 == errorContext->fErrors,
843                            "This threw more errors than expected.");
844    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, kParseError_SkError == error,
845                            SkGetLastErrorString());
846}
847
848static void test_bitmap_with_encoded_data(skiatest::Reporter* reporter) {
849    // Create a bitmap that will be encoded.
850    SkBitmap original;
851    make_bm(&original, 100, 100, SK_ColorBLUE, true);
852    SkDynamicMemoryWStream wStream;
853    if (!SkImageEncoder::EncodeStream(&wStream, original, SkImageEncoder::kPNG_Type, 100)) {
854        return;
855    }
856    SkAutoDataUnref data(wStream.copyToData());
857
858    SkBitmap bm;
859    bool installSuccess = SkInstallDiscardablePixelRef(
860         SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options()), &bm, NULL);
861    REPORTER_ASSERT(reporter, installSuccess);
862
863    // Write both bitmaps to pictures, and ensure that the resulting data streams are the same.
864    // Flattening original will follow the old path of performing an encode, while flattening bm
865    // will use the already encoded data.
866    SkAutoDataUnref picture1(serialized_picture_from_bitmap(original));
867    SkAutoDataUnref picture2(serialized_picture_from_bitmap(bm));
868    REPORTER_ASSERT(reporter, picture1->equals(picture2));
869    // Now test that a parse error was generated when trying to create a new SkPicture without
870    // providing a function to decode the bitmap.
871    ErrorContext context;
872    context.fErrors = 0;
873    context.fReporter = reporter;
874    SkSetErrorCallback(assert_one_parse_error_cb, &context);
875    SkMemoryStream pictureStream(picture1);
876    SkClearLastError();
877    SkAutoUnref pictureFromStream(SkPicture::CreateFromStream(&pictureStream, NULL));
878    REPORTER_ASSERT(reporter, pictureFromStream.get() != NULL);
879    SkClearLastError();
880    SkSetErrorCallback(NULL, NULL);
881}
882
883static void test_clone_empty(skiatest::Reporter* reporter) {
884    // This is a regression test for crbug.com/172062
885    // Before the fix, we used to crash accessing a null pointer when we
886    // had a picture with no paints. This test passes by not crashing.
887    {
888        SkPictureRecorder recorder;
889        recorder.beginRecording(1, 1);
890        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
891        SkAutoTUnref<SkPicture> destPicture(picture->clone());
892        REPORTER_ASSERT(reporter, NULL != destPicture);
893    }
894}
895
896static void test_draw_empty(skiatest::Reporter* reporter) {
897    SkBitmap result;
898    make_bm(&result, 2, 2, SK_ColorBLACK, false);
899
900    SkCanvas canvas(result);
901
902    {
903        // stock SkPicture
904        SkPictureRecorder recorder;
905        recorder.beginRecording(1, 1);
906        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
907
908        canvas.drawPicture(*picture);
909    }
910
911    {
912        // tile grid
913        SkTileGridPicture::TileGridInfo gridInfo;
914        gridInfo.fMargin.setEmpty();
915        gridInfo.fOffset.setZero();
916        gridInfo.fTileInterval.set(1, 1);
917
918        SkAutoTUnref<SkPictureFactory> factory(SkNEW_ARGS(SkTileGridPictureFactory, (gridInfo)));
919        SkPictureRecorder recorder(factory);
920        recorder.beginRecording(1, 1, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
921        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
922
923        canvas.drawPicture(*picture);
924    }
925
926    {
927        // RTree
928        SkPictureRecorder recorder;
929        recorder.beginRecording(1, 1, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
930        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
931
932        canvas.drawPicture(*picture);
933    }
934
935    {
936        // quad tree
937        SkAutoTUnref<SkPictureFactory> factory(SkNEW(SkQuadTreePictureFactory));
938        SkPictureRecorder recorder(factory);
939        recorder.beginRecording(1, 1, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
940        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
941
942        canvas.drawPicture(*picture);
943    }
944}
945
946static void test_clip_bound_opt(skiatest::Reporter* reporter) {
947    // Test for crbug.com/229011
948    SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(4), SkIntToScalar(4),
949                                    SkIntToScalar(2), SkIntToScalar(2));
950    SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(7), SkIntToScalar(7),
951                                    SkIntToScalar(1), SkIntToScalar(1));
952    SkRect rect3 = SkRect::MakeXYWH(SkIntToScalar(6), SkIntToScalar(6),
953                                    SkIntToScalar(1), SkIntToScalar(1));
954
955    SkPath invPath;
956    invPath.addOval(rect1);
957    invPath.setFillType(SkPath::kInverseEvenOdd_FillType);
958    SkPath path;
959    path.addOval(rect2);
960    SkPath path2;
961    path2.addOval(rect3);
962    SkIRect clipBounds;
963    SkPictureRecorder recorder;
964    // Minimalist test set for 100% code coverage of
965    // SkPictureRecord::updateClipConservativelyUsingBounds
966    {
967        SkCanvas* canvas = recorder.beginRecording(10, 10,
968            SkPicture::kUsePathBoundsForClip_RecordingFlag);
969        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
970        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
971        REPORTER_ASSERT(reporter, true == nonEmpty);
972        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
973        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
974        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
975        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
976    }
977    {
978        SkCanvas* canvas = recorder.beginRecording(10, 10,
979            SkPicture::kUsePathBoundsForClip_RecordingFlag);
980        canvas->clipPath(path, SkRegion::kIntersect_Op);
981        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
982        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
983        REPORTER_ASSERT(reporter, true == nonEmpty);
984        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
985        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
986        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
987        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
988    }
989    {
990        SkCanvas* canvas = recorder.beginRecording(10, 10,
991            SkPicture::kUsePathBoundsForClip_RecordingFlag);
992        canvas->clipPath(path, SkRegion::kIntersect_Op);
993        canvas->clipPath(invPath, SkRegion::kUnion_Op);
994        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
995        REPORTER_ASSERT(reporter, true == nonEmpty);
996        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
997        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
998        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
999        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1000    }
1001    {
1002        SkCanvas* canvas = recorder.beginRecording(10, 10,
1003            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1004        canvas->clipPath(path, SkRegion::kDifference_Op);
1005        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1006        REPORTER_ASSERT(reporter, true == nonEmpty);
1007        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1008        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1009        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1010        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1011    }
1012    {
1013        SkCanvas* canvas = recorder.beginRecording(10, 10,
1014            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1015        canvas->clipPath(path, SkRegion::kReverseDifference_Op);
1016        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1017        // True clip is actually empty in this case, but the best
1018        // determination we can make using only bounds as input is that the
1019        // clip is included in the bounds of 'path'.
1020        REPORTER_ASSERT(reporter, true == nonEmpty);
1021        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1022        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1023        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1024        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1025    }
1026    {
1027        SkCanvas* canvas = recorder.beginRecording(10, 10,
1028            SkPicture::kUsePathBoundsForClip_RecordingFlag);
1029        canvas->clipPath(path, SkRegion::kIntersect_Op);
1030        canvas->clipPath(path2, SkRegion::kXOR_Op);
1031        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1032        REPORTER_ASSERT(reporter, true == nonEmpty);
1033        REPORTER_ASSERT(reporter, 6 == clipBounds.fLeft);
1034        REPORTER_ASSERT(reporter, 6 == clipBounds.fTop);
1035        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1036        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1037    }
1038}
1039
1040/**
1041 * A canvas that records the number of clip commands.
1042 */
1043class ClipCountingCanvas : public SkCanvas {
1044public:
1045    explicit ClipCountingCanvas(int width, int height)
1046        : INHERITED(width, height)
1047        , fClipCount(0){
1048    }
1049
1050    virtual void onClipRect(const SkRect& r,
1051                            SkRegion::Op op,
1052                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1053        fClipCount += 1;
1054        this->INHERITED::onClipRect(r, op, edgeStyle);
1055    }
1056
1057    virtual void onClipRRect(const SkRRect& rrect,
1058                             SkRegion::Op op,
1059                             ClipEdgeStyle edgeStyle)SK_OVERRIDE {
1060        fClipCount += 1;
1061        this->INHERITED::onClipRRect(rrect, op, edgeStyle);
1062    }
1063
1064    virtual void onClipPath(const SkPath& path,
1065                            SkRegion::Op op,
1066                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1067        fClipCount += 1;
1068        this->INHERITED::onClipPath(path, op, edgeStyle);
1069    }
1070
1071    virtual void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) SK_OVERRIDE {
1072        fClipCount += 1;
1073        this->INHERITED::onClipRegion(deviceRgn, op);
1074    }
1075
1076    unsigned getClipCount() const { return fClipCount; }
1077
1078private:
1079    unsigned fClipCount;
1080
1081    typedef SkCanvas INHERITED;
1082};
1083
1084static void test_clip_expansion(skiatest::Reporter* reporter) {
1085    SkPictureRecorder recorder;
1086    SkCanvas* canvas = recorder.beginRecording(10, 10, 0);
1087
1088    canvas->clipRect(SkRect::MakeEmpty(), SkRegion::kReplace_Op);
1089    // The following expanding clip should not be skipped.
1090    canvas->clipRect(SkRect::MakeXYWH(4, 4, 3, 3), SkRegion::kUnion_Op);
1091    // Draw something so the optimizer doesn't just fold the world.
1092    SkPaint p;
1093    p.setColor(SK_ColorBLUE);
1094    canvas->drawPaint(p);
1095    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1096
1097    ClipCountingCanvas testCanvas(10, 10);
1098    picture->draw(&testCanvas);
1099
1100    // Both clips should be present on playback.
1101    REPORTER_ASSERT(reporter, testCanvas.getClipCount() == 2);
1102}
1103
1104static void test_hierarchical(skiatest::Reporter* reporter) {
1105    SkBitmap bm;
1106    make_bm(&bm, 10, 10, SK_ColorRED, true);
1107
1108    SkPictureRecorder recorder;
1109
1110    recorder.beginRecording(10, 10);
1111    SkAutoTUnref<SkPicture> childPlain(recorder.endRecording());
1112    REPORTER_ASSERT(reporter, !childPlain->willPlayBackBitmaps()); // 0
1113
1114    recorder.beginRecording(10, 10)->drawBitmap(bm, 0, 0);
1115    SkAutoTUnref<SkPicture> childWithBitmap(recorder.endRecording());
1116    REPORTER_ASSERT(reporter, childWithBitmap->willPlayBackBitmaps()); // 1
1117
1118    {
1119        SkCanvas* canvas = recorder.beginRecording(10, 10);
1120        canvas->drawPicture(*childPlain);
1121        SkAutoTUnref<SkPicture> parentPP(recorder.endRecording());
1122        REPORTER_ASSERT(reporter, !parentPP->willPlayBackBitmaps()); // 0
1123    }
1124    {
1125        SkCanvas* canvas = recorder.beginRecording(10, 10);
1126        canvas->drawPicture(*childWithBitmap);
1127        SkAutoTUnref<SkPicture> parentPWB(recorder.endRecording());
1128        REPORTER_ASSERT(reporter, parentPWB->willPlayBackBitmaps()); // 1
1129    }
1130    {
1131        SkCanvas* canvas = recorder.beginRecording(10, 10);
1132        canvas->drawBitmap(bm, 0, 0);
1133        canvas->drawPicture(*childPlain);
1134        SkAutoTUnref<SkPicture> parentWBP(recorder.endRecording());
1135        REPORTER_ASSERT(reporter, parentWBP->willPlayBackBitmaps()); // 1
1136    }
1137    {
1138        SkCanvas* canvas = recorder.beginRecording(10, 10);
1139        canvas->drawBitmap(bm, 0, 0);
1140        canvas->drawPicture(*childWithBitmap);
1141        SkAutoTUnref<SkPicture> parentWBWB(recorder.endRecording());
1142        REPORTER_ASSERT(reporter, parentWBWB->willPlayBackBitmaps()); // 2
1143    }
1144}
1145
1146static void test_gen_id(skiatest::Reporter* reporter) {
1147
1148    SkPicture empty;
1149
1150    // Empty pictures should still have a valid ID
1151    REPORTER_ASSERT(reporter, empty.uniqueID() != SK_InvalidGenID);
1152
1153    SkPictureRecorder recorder;
1154
1155    SkCanvas* canvas = recorder.beginRecording(1, 1);
1156    canvas->drawARGB(255, 255, 255, 255);
1157    SkAutoTUnref<SkPicture> hasData(recorder.endRecording());
1158    // picture should have a non-zero id after recording
1159    REPORTER_ASSERT(reporter, hasData->uniqueID() != SK_InvalidGenID);
1160
1161    // both pictures should have different ids
1162    REPORTER_ASSERT(reporter, hasData->uniqueID() != empty.uniqueID());
1163
1164    // test out copy constructor
1165    SkPicture copyWithData(*hasData);
1166    REPORTER_ASSERT(reporter, hasData->uniqueID() == copyWithData.uniqueID());
1167
1168    SkPicture emptyCopy(empty);
1169    REPORTER_ASSERT(reporter, empty.uniqueID() != emptyCopy.uniqueID());
1170
1171    // test out swap
1172    {
1173        SkPicture swapWithData;
1174        uint32_t beforeID1 = swapWithData.uniqueID();
1175        uint32_t beforeID2 = copyWithData.uniqueID();
1176        swapWithData.swap(copyWithData);
1177        REPORTER_ASSERT(reporter, copyWithData.uniqueID() == beforeID1);
1178        REPORTER_ASSERT(reporter, swapWithData.uniqueID() == beforeID2);
1179    }
1180
1181    // test out clone
1182    {
1183        SkAutoTUnref<SkPicture> cloneWithData(hasData->clone());
1184        REPORTER_ASSERT(reporter, hasData->uniqueID() == cloneWithData->uniqueID());
1185
1186        SkAutoTUnref<SkPicture> emptyClone(empty.clone());
1187        REPORTER_ASSERT(reporter, empty.uniqueID() != emptyClone->uniqueID());
1188    }
1189}
1190
1191DEF_TEST(Picture, reporter) {
1192#ifdef SK_DEBUG
1193    test_deleting_empty_playback();
1194    test_serializing_empty_picture();
1195#else
1196    test_bad_bitmap();
1197#endif
1198    test_unbalanced_save_restores(reporter);
1199    test_peephole();
1200    test_gatherpixelrefs(reporter);
1201    test_gatherpixelrefsandrects(reporter);
1202    test_bitmap_with_encoded_data(reporter);
1203    test_clone_empty(reporter);
1204    test_draw_empty(reporter);
1205    test_clip_bound_opt(reporter);
1206    test_clip_expansion(reporter);
1207    test_hierarchical(reporter);
1208    test_gen_id(reporter);
1209}
1210
1211static void draw_bitmaps(const SkBitmap bitmap, SkCanvas* canvas) {
1212    const SkPaint paint;
1213    const SkRect rect = { 5.0f, 5.0f, 8.0f, 8.0f };
1214    const SkIRect irect =  { 2, 2, 3, 3 };
1215
1216    // Don't care what these record, as long as they're legal.
1217    canvas->drawBitmap(bitmap, 0.0f, 0.0f, &paint);
1218    canvas->drawBitmapRectToRect(bitmap, &rect, rect, &paint, SkCanvas::kNone_DrawBitmapRectFlag);
1219    canvas->drawBitmapMatrix(bitmap, SkMatrix::I(), &paint);
1220    canvas->drawBitmapNine(bitmap, irect, rect, &paint);
1221    canvas->drawSprite(bitmap, 1, 1);
1222}
1223
1224static void test_draw_bitmaps(SkCanvas* canvas) {
1225    SkBitmap empty;
1226    draw_bitmaps(empty, canvas);
1227    empty.setConfig(SkImageInfo::MakeN32Premul(10, 10));
1228    draw_bitmaps(empty, canvas);
1229}
1230
1231DEF_TEST(Picture_EmptyBitmap, r) {
1232    SkPictureRecorder recorder;
1233    test_draw_bitmaps(recorder.beginRecording(10, 10));
1234    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1235}
1236
1237DEF_TEST(Canvas_EmptyBitmap, r) {
1238    SkBitmap dst;
1239    dst.allocN32Pixels(10, 10);
1240    SkCanvas canvas(dst);
1241
1242    test_draw_bitmaps(&canvas);
1243}
1244