PictureTest.cpp revision 770963f23f4fc313db0fa3bac18b1b8aafb55f17 
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 "SkPictureRecorder.h"
19#include "SkPictureUtils.h"
20#include "SkRRect.h"
21#include "SkRandom.h"
22#include "SkShader.h"
23#include "SkStream.h"
24#include "Test.h"
25
26static const int gColorScale = 30;
27static const int gColorOffset = 60;
28
29static void make_bm(SkBitmap* bm, int w, int h, SkColor color, bool immutable) {
30    bm->allocN32Pixels(w, h);
31    bm->eraseColor(color);
32    if (immutable) {
33        bm->setImmutable();
34    }
35}
36
37static void make_checkerboard(SkBitmap* bm, int w, int h, bool immutable) {
38    SkASSERT(w % 2 == 0);
39    SkASSERT(h % 2 == 0);
40    bm->allocPixels(SkImageInfo::Make(w, h, kAlpha_8_SkColorType,
41                                      kPremul_SkAlphaType));
42    SkAutoLockPixels lock(*bm);
43    for (int y = 0; y < h; y += 2) {
44        uint8_t* s = bm->getAddr8(0, y);
45        for (int x = 0; x < w; x += 2) {
46            *s++ = 0xFF;
47            *s++ = 0x00;
48        }
49        s = bm->getAddr8(0, y + 1);
50        for (int x = 0; x < w; x += 2) {
51            *s++ = 0x00;
52            *s++ = 0xFF;
53        }
54    }
55    if (immutable) {
56        bm->setImmutable();
57    }
58}
59
60static void init_paint(SkPaint* paint, const SkBitmap &bm) {
61    SkShader* shader = SkShader::CreateBitmapShader(bm,
62                                                    SkShader::kClamp_TileMode,
63                                                    SkShader::kClamp_TileMode);
64    paint->setShader(shader)->unref();
65}
66
67typedef void (*DrawBitmapProc)(SkCanvas*, const SkBitmap&,
68                               const SkBitmap&, const SkPoint&,
69                               SkTDArray<SkPixelRef*>* usedPixRefs);
70
71static void drawpaint_proc(SkCanvas* canvas, const SkBitmap& bm,
72                           const SkBitmap& altBM, const SkPoint& pos,
73                           SkTDArray<SkPixelRef*>* usedPixRefs) {
74    SkPaint paint;
75    init_paint(&paint, bm);
76
77    canvas->drawPaint(paint);
78    *usedPixRefs->append() = bm.pixelRef();
79}
80
81static void drawpoints_proc(SkCanvas* canvas, const SkBitmap& bm,
82                            const SkBitmap& altBM, const SkPoint& pos,
83                            SkTDArray<SkPixelRef*>* usedPixRefs) {
84    SkPaint paint;
85    init_paint(&paint, bm);
86
87    // draw a rect
88    SkPoint points[5] = {
89        { pos.fX, pos.fY },
90        { pos.fX + bm.width() - 1, pos.fY },
91        { pos.fX + bm.width() - 1, pos.fY + bm.height() - 1 },
92        { pos.fX, pos.fY + bm.height() - 1 },
93        { pos.fX, pos.fY },
94    };
95
96    canvas->drawPoints(SkCanvas::kPolygon_PointMode, 5, points, paint);
97    *usedPixRefs->append() = bm.pixelRef();
98}
99
100static void drawrect_proc(SkCanvas* canvas, const SkBitmap& bm,
101                          const SkBitmap& altBM, const SkPoint& pos,
102                          SkTDArray<SkPixelRef*>* usedPixRefs) {
103    SkPaint paint;
104    init_paint(&paint, bm);
105
106    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
107    r.offset(pos.fX, pos.fY);
108
109    canvas->drawRect(r, paint);
110    *usedPixRefs->append() = bm.pixelRef();
111}
112
113static void drawoval_proc(SkCanvas* canvas, const SkBitmap& bm,
114                          const SkBitmap& altBM, const SkPoint& pos,
115                          SkTDArray<SkPixelRef*>* usedPixRefs) {
116    SkPaint paint;
117    init_paint(&paint, bm);
118
119    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
120    r.offset(pos.fX, pos.fY);
121
122    canvas->drawOval(r, paint);
123    *usedPixRefs->append() = bm.pixelRef();
124}
125
126static void drawrrect_proc(SkCanvas* canvas, const SkBitmap& bm,
127                           const SkBitmap& altBM, const SkPoint& pos,
128                           SkTDArray<SkPixelRef*>* usedPixRefs) {
129    SkPaint paint;
130    init_paint(&paint, bm);
131
132    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
133    r.offset(pos.fX, pos.fY);
134
135    SkRRect rr;
136    rr.setRectXY(r, SkIntToScalar(bm.width())/4, SkIntToScalar(bm.height())/4);
137    canvas->drawRRect(rr, paint);
138    *usedPixRefs->append() = bm.pixelRef();
139}
140
141static void drawpath_proc(SkCanvas* canvas, const SkBitmap& bm,
142                          const SkBitmap& altBM, const SkPoint& pos,
143                          SkTDArray<SkPixelRef*>* usedPixRefs) {
144    SkPaint paint;
145    init_paint(&paint, bm);
146
147    SkPath path;
148    path.lineTo(bm.width()/2.0f, SkIntToScalar(bm.height()));
149    path.lineTo(SkIntToScalar(bm.width()), 0);
150    path.close();
151    path.offset(pos.fX, pos.fY);
152
153    canvas->drawPath(path, paint);
154    *usedPixRefs->append() = bm.pixelRef();
155}
156
157static void drawbitmap_proc(SkCanvas* canvas, const SkBitmap& bm,
158                            const SkBitmap& altBM, const SkPoint& pos,
159                            SkTDArray<SkPixelRef*>* usedPixRefs) {
160    canvas->drawBitmap(bm, pos.fX, pos.fY, NULL);
161    *usedPixRefs->append() = bm.pixelRef();
162}
163
164static void drawbitmap_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
165                                       const SkBitmap& altBM, const SkPoint& pos,
166                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
167    SkPaint paint;
168    init_paint(&paint, bm);
169
170    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
171    canvas->drawBitmap(altBM, pos.fX, pos.fY, &paint);
172    *usedPixRefs->append() = bm.pixelRef();
173    *usedPixRefs->append() = altBM.pixelRef();
174}
175
176static void drawsprite_proc(SkCanvas* canvas, const SkBitmap& bm,
177                            const SkBitmap& altBM, const SkPoint& pos,
178                            SkTDArray<SkPixelRef*>* usedPixRefs) {
179    const SkMatrix& ctm = canvas->getTotalMatrix();
180
181    SkPoint p(pos);
182    ctm.mapPoints(&p, 1);
183
184    canvas->drawSprite(bm, (int)p.fX, (int)p.fY, NULL);
185    *usedPixRefs->append() = bm.pixelRef();
186}
187
188#if 0
189// Although specifiable, this case doesn't seem to make sense (i.e., the
190// bitmap in the shader is never used).
191static void drawsprite_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
192                                       const SkBitmap& altBM, const SkPoint& pos,
193                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
194    SkPaint paint;
195    init_paint(&paint, bm);
196
197    const SkMatrix& ctm = canvas->getTotalMatrix();
198
199    SkPoint p(pos);
200    ctm.mapPoints(&p, 1);
201
202    canvas->drawSprite(altBM, (int)p.fX, (int)p.fY, &paint);
203    *usedPixRefs->append() = bm.pixelRef();
204    *usedPixRefs->append() = altBM.pixelRef();
205}
206#endif
207
208static void drawbitmaprect_proc(SkCanvas* canvas, const SkBitmap& bm,
209                                const SkBitmap& altBM, const SkPoint& pos,
210                                SkTDArray<SkPixelRef*>* usedPixRefs) {
211    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
212
213    r.offset(pos.fX, pos.fY);
214    canvas->drawBitmapRectToRect(bm, NULL, r, NULL);
215    *usedPixRefs->append() = bm.pixelRef();
216}
217
218static void drawbitmaprect_withshader_proc(SkCanvas* canvas,
219                                           const SkBitmap& bm,
220                                           const SkBitmap& altBM,
221                                           const SkPoint& pos,
222                                           SkTDArray<SkPixelRef*>* usedPixRefs) {
223    SkPaint paint;
224    init_paint(&paint, bm);
225
226    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
227    r.offset(pos.fX, pos.fY);
228
229    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
230    canvas->drawBitmapRectToRect(altBM, NULL, r, &paint);
231    *usedPixRefs->append() = bm.pixelRef();
232    *usedPixRefs->append() = altBM.pixelRef();
233}
234
235static void drawtext_proc(SkCanvas* canvas, const SkBitmap& bm,
236                          const SkBitmap& altBM, const SkPoint& pos,
237                          SkTDArray<SkPixelRef*>* usedPixRefs) {
238    SkPaint paint;
239    init_paint(&paint, bm);
240    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
241
242    canvas->drawText("0", 1, pos.fX, pos.fY+bm.width(), paint);
243    *usedPixRefs->append() = bm.pixelRef();
244}
245
246static void drawpostext_proc(SkCanvas* canvas, const SkBitmap& bm,
247                             const SkBitmap& altBM, const SkPoint& pos,
248                             SkTDArray<SkPixelRef*>* usedPixRefs) {
249    SkPaint paint;
250    init_paint(&paint, bm);
251    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
252
253    SkPoint point = { pos.fX, pos.fY + bm.height() };
254    canvas->drawPosText("O", 1, &point, paint);
255    *usedPixRefs->append() = bm.pixelRef();
256}
257
258static void drawtextonpath_proc(SkCanvas* canvas, const SkBitmap& bm,
259                                const SkBitmap& altBM, const SkPoint& pos,
260                                SkTDArray<SkPixelRef*>* usedPixRefs) {
261    SkPaint paint;
262
263    init_paint(&paint, bm);
264    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
265
266    SkPath path;
267    path.lineTo(SkIntToScalar(bm.width()), 0);
268    path.offset(pos.fX, pos.fY+bm.height());
269
270    canvas->drawTextOnPath("O", 1, path, NULL, paint);
271    *usedPixRefs->append() = bm.pixelRef();
272}
273
274static void drawverts_proc(SkCanvas* canvas, const SkBitmap& bm,
275                           const SkBitmap& altBM, const SkPoint& pos,
276                           SkTDArray<SkPixelRef*>* usedPixRefs) {
277    SkPaint paint;
278    init_paint(&paint, bm);
279
280    SkPoint verts[4] = {
281        { pos.fX, pos.fY },
282        { pos.fX + bm.width(), pos.fY },
283        { pos.fX + bm.width(), pos.fY + bm.height() },
284        { pos.fX, pos.fY + bm.height() }
285    };
286    SkPoint texs[4] = { { 0, 0 },
287                        { SkIntToScalar(bm.width()), 0 },
288                        { SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) },
289                        { 0, SkIntToScalar(bm.height()) } };
290    uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
291
292    canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 4, verts, texs, NULL, NULL,
293                         indices, 6, paint);
294    *usedPixRefs->append() = bm.pixelRef();
295}
296
297// Return a picture with the bitmaps drawn at the specified positions.
298static SkPicture* record_bitmaps(const SkBitmap bm[],
299                                 const SkPoint pos[],
300                                 SkTDArray<SkPixelRef*> analytic[],
301                                 int count,
302                                 DrawBitmapProc proc) {
303    SkPictureRecorder recorder;
304    SkCanvas* canvas = recorder.beginRecording(1000, 1000, NULL, 0);
305    for (int i = 0; i < count; ++i) {
306        analytic[i].rewind();
307        canvas->save();
308        SkRect clipRect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY,
309                                           SkIntToScalar(bm[i].width()),
310                                           SkIntToScalar(bm[i].height()));
311        canvas->clipRect(clipRect, SkRegion::kIntersect_Op);
312        proc(canvas, bm[i], bm[count+i], pos[i], &analytic[i]);
313        canvas->restore();
314    }
315    return recorder.endRecording();
316}
317
318static void rand_rect(SkRect* rect, SkRandom& rand, SkScalar W, SkScalar H) {
319    rect->fLeft   = rand.nextRangeScalar(-W, 2*W);
320    rect->fTop    = rand.nextRangeScalar(-H, 2*H);
321    rect->fRight  = rect->fLeft + rand.nextRangeScalar(0, W);
322    rect->fBottom = rect->fTop + rand.nextRangeScalar(0, H);
323
324    // we integralize rect to make our tests more predictable, since Gather is
325    // a little sloppy.
326    SkIRect ir;
327    rect->round(&ir);
328    rect->set(ir);
329}
330
331static void draw(SkPicture* pic, int width, int height, SkBitmap* result) {
332    make_bm(result, width, height, SK_ColorBLACK, false);
333
334    SkCanvas canvas(*result);
335    canvas.drawPicture(*pic);
336}
337
338template <typename T> int find_index(const T* array, T elem, int count) {
339    for (int i = 0; i < count; ++i) {
340        if (array[i] == elem) {
341            return i;
342        }
343    }
344    return -1;
345}
346
347// Return true if 'ref' is found in array[]
348static bool find(SkPixelRef const * const * array, SkPixelRef const * ref, int count) {
349    return find_index<const SkPixelRef*>(array, ref, count) >= 0;
350}
351
352// Look at each pixel that is inside 'subset', and if its color appears in
353// colors[], find the corresponding value in refs[] and append that ref into
354// array, skipping duplicates of the same value.
355// Note that gathering pixelRefs from rendered colors suffers from the problem
356// that multiple simultaneous textures (e.g., A8 for alpha and 8888 for color)
357// isn't easy to reconstruct.
358static void gather_from_image(const SkBitmap& bm, SkPixelRef* const refs[],
359                              int count, SkTDArray<SkPixelRef*>* array,
360                              const SkRect& subset) {
361    SkIRect ir;
362    subset.roundOut(&ir);
363
364    if (!ir.intersect(0, 0, bm.width()-1, bm.height()-1)) {
365        return;
366    }
367
368    // Since we only want to return unique values in array, when we scan we just
369    // set a bit for each index'd color found. In practice we only have a few
370    // distinct colors, so we just use an int's bits as our array. Hence the
371    // assert that count <= number-of-bits-in-our-int.
372    SkASSERT((unsigned)count <= 32);
373    uint32_t bitarray = 0;
374
375    SkAutoLockPixels alp(bm);
376
377    for (int y = ir.fTop; y < ir.fBottom; ++y) {
378        for (int x = ir.fLeft; x < ir.fRight; ++x) {
379            SkPMColor pmc = *bm.getAddr32(x, y);
380            // the only good case where the color is not found would be if
381            // the color is transparent, meaning no bitmap was drawn in that
382            // pixel.
383            if (pmc) {
384                uint32_t index = SkGetPackedR32(pmc);
385                SkASSERT(SkGetPackedG32(pmc) == index);
386                SkASSERT(SkGetPackedB32(pmc) == index);
387                if (0 == index) {
388                    continue;           // background color
389                }
390                SkASSERT(0 == (index - gColorOffset) % gColorScale);
391                index = (index - gColorOffset) / gColorScale;
392                SkASSERT(static_cast<int>(index) < count);
393                bitarray |= 1 << index;
394            }
395        }
396    }
397
398    for (int i = 0; i < count; ++i) {
399        if (bitarray & (1 << i)) {
400            *array->append() = refs[i];
401        }
402    }
403}
404
405static void gather_from_analytic(const SkPoint pos[], SkScalar w, SkScalar h,
406                                 const SkTDArray<SkPixelRef*> analytic[],
407                                 int count,
408                                 SkTDArray<SkPixelRef*>* result,
409                                 const SkRect& subset) {
410    for (int i = 0; i < count; ++i) {
411        SkRect rect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY, w, h);
412
413        if (SkRect::Intersects(subset, rect)) {
414            result->append(analytic[i].count(), analytic[i].begin());
415        }
416    }
417}
418
419
420static const struct {
421    const DrawBitmapProc proc;
422    const char* const desc;
423} gProcs[] = {
424    {drawpaint_proc, "drawpaint"},
425    {drawpoints_proc, "drawpoints"},
426    {drawrect_proc, "drawrect"},
427    {drawoval_proc, "drawoval"},
428    {drawrrect_proc, "drawrrect"},
429    {drawpath_proc, "drawpath"},
430    {drawbitmap_proc, "drawbitmap"},
431    {drawbitmap_withshader_proc, "drawbitmap_withshader"},
432    {drawsprite_proc, "drawsprite"},
433#if 0
434    {drawsprite_withshader_proc, "drawsprite_withshader"},
435#endif
436    {drawbitmaprect_proc, "drawbitmaprect"},
437    {drawbitmaprect_withshader_proc, "drawbitmaprect_withshader"},
438    {drawtext_proc, "drawtext"},
439    {drawpostext_proc, "drawpostext"},
440    {drawtextonpath_proc, "drawtextonpath"},
441    {drawverts_proc, "drawverts"},
442};
443
444static void create_textures(SkBitmap* bm, SkPixelRef** refs, int num, int w, int h) {
445    // Our convention is that the color components contain an encoding of
446    // the index of their corresponding bitmap/pixelref. (0,0,0,0) is
447    // reserved for the background
448    for (int i = 0; i < num; ++i) {
449        make_bm(&bm[i], w, h,
450                SkColorSetARGB(0xFF,
451                               gColorScale*i+gColorOffset,
452                               gColorScale*i+gColorOffset,
453                               gColorScale*i+gColorOffset),
454                true);
455        refs[i] = bm[i].pixelRef();
456    }
457
458    // The A8 alternate bitmaps are all BW checkerboards
459    for (int i = 0; i < num; ++i) {
460        make_checkerboard(&bm[num+i], w, h, true);
461        refs[num+i] = bm[num+i].pixelRef();
462    }
463}
464
465static void test_gatherpixelrefs(skiatest::Reporter* reporter) {
466    const int IW = 32;
467    const int IH = IW;
468    const SkScalar W = SkIntToScalar(IW);
469    const SkScalar H = W;
470
471    static const int N = 4;
472    SkBitmap bm[2*N];
473    SkPixelRef* refs[2*N];
474    SkTDArray<SkPixelRef*> analytic[N];
475
476    const SkPoint pos[N] = {
477        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
478    };
479
480    create_textures(bm, refs, N, IW, IH);
481
482    SkRandom rand;
483    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
484        SkAutoTUnref<SkPicture> pic(
485            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
486
487        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
488        // quick check for a small piece of each quadrant, which should just
489        // contain 1 or 2 bitmaps.
490        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
491            SkRect r;
492            r.set(2, 2, W - 2, H - 2);
493            r.offset(pos[i].fX, pos[i].fY);
494            SkAutoDataUnref data(SkPictureUtils::GatherPixelRefs(pic, r));
495            if (!data) {
496                ERRORF(reporter, "SkPictureUtils::GatherPixelRefs returned "
497                       "NULL for %s.", gProcs[k].desc);
498                continue;
499            }
500            SkPixelRef** gatheredRefs = (SkPixelRef**)data->data();
501            int count = static_cast<int>(data->size() / sizeof(SkPixelRef*));
502            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
503            if (1 == count) {
504                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
505            } else if (2 == count) {
506                REPORTER_ASSERT(reporter,
507                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
508                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
509            }
510        }
511
512        SkBitmap image;
513        draw(pic, 2*IW, 2*IH, &image);
514
515        // Test a bunch of random (mostly) rects, and compare the gather results
516        // with a deduced list of refs by looking at the colors drawn.
517        for (int j = 0; j < 100; ++j) {
518            SkRect r;
519            rand_rect(&r, rand, 2*W, 2*H);
520
521            SkTDArray<SkPixelRef*> fromImage;
522            gather_from_image(image, refs, N, &fromImage, r);
523
524            SkTDArray<SkPixelRef*> fromAnalytic;
525            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
526
527            SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
528            size_t dataSize = data ? data->size() : 0;
529            int gatherCount = static_cast<int>(dataSize / sizeof(SkPixelRef*));
530            SkASSERT(gatherCount * sizeof(SkPixelRef*) == dataSize);
531            SkPixelRef** gatherRefs = data ? (SkPixelRef**)(data->data()) : NULL;
532            SkAutoDataUnref adu(data);
533
534            // Everything that we saw drawn should appear in the analytic list
535            // but the analytic list may contain some pixelRefs that were not
536            // seen in the image (e.g., A8 textures used as masks)
537            for (int i = 0; i < fromImage.count(); ++i) {
538                if (-1 == fromAnalytic.find(fromImage[i])) {
539                    ERRORF(reporter, "PixelRef missing %d %s",
540                           i, gProcs[k].desc);
541                }
542            }
543
544            /*
545             *  GatherPixelRefs is conservative, so it can return more bitmaps
546             *  than are strictly required. Thus our check here is only that
547             *  Gather didn't miss any that we actually needed. Even that isn't
548             *  a strict requirement on Gather, which is meant to be quick and
549             *  only mostly-correct, but at the moment this test should work.
550             */
551            for (int i = 0; i < fromAnalytic.count(); ++i) {
552                bool found = find(gatherRefs, fromAnalytic[i], gatherCount);
553                if (!found) {
554                    ERRORF(reporter, "PixelRef missing %d %s",
555                           i, gProcs[k].desc);
556                }
557#if 0
558                // enable this block of code to debug failures, as it will rerun
559                // the case that failed.
560                if (!found) {
561                    SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
562                    size_t dataSize = data ? data->size() : 0;
563                }
564#endif
565            }
566        }
567    }
568}
569
570static void test_gatherpixelrefsandrects(skiatest::Reporter* reporter) {
571    const int IW = 32;
572    const int IH = IW;
573    const SkScalar W = SkIntToScalar(IW);
574    const SkScalar H = W;
575
576    static const int N = 4;
577    SkBitmap bm[2*N];
578    SkPixelRef* refs[2*N];
579    SkTDArray<SkPixelRef*> analytic[N];
580
581    const SkPoint pos[N] = {
582        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
583    };
584
585    create_textures(bm, refs, N, IW, IH);
586
587    SkRandom rand;
588    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
589        SkAutoTUnref<SkPicture> pic(
590            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
591
592        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
593
594        SkAutoTUnref<SkPictureUtils::SkPixelRefContainer> prCont(
595                                new SkPictureUtils::SkPixelRefsAndRectsList);
596
597        SkPictureUtils::GatherPixelRefsAndRects(pic, prCont);
598
599        // quick check for a small piece of each quadrant, which should just
600        // contain 1 or 2 bitmaps.
601        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
602            SkRect r;
603            r.set(2, 2, W - 2, H - 2);
604            r.offset(pos[i].fX, pos[i].fY);
605
606            SkTDArray<SkPixelRef*> gatheredRefs;
607            prCont->query(r, &gatheredRefs);
608
609            int count = gatheredRefs.count();
610            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
611            if (1 == count) {
612                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
613            } else if (2 == count) {
614                REPORTER_ASSERT(reporter,
615                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
616                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
617            }
618        }
619
620        SkBitmap image;
621        draw(pic, 2*IW, 2*IH, &image);
622
623        // Test a bunch of random (mostly) rects, and compare the gather results
624        // with the analytic results and the pixel refs seen in a rendering.
625        for (int j = 0; j < 100; ++j) {
626            SkRect r;
627            rand_rect(&r, rand, 2*W, 2*H);
628
629            SkTDArray<SkPixelRef*> fromImage;
630            gather_from_image(image, refs, N, &fromImage, r);
631
632            SkTDArray<SkPixelRef*> fromAnalytic;
633            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
634
635            SkTDArray<SkPixelRef*> gatheredRefs;
636            prCont->query(r, &gatheredRefs);
637
638            // Everything that we saw drawn should appear in the analytic list
639            // but the analytic list may contain some pixelRefs that were not
640            // seen in the image (e.g., A8 textures used as masks)
641            for (int i = 0; i < fromImage.count(); ++i) {
642                REPORTER_ASSERT(reporter, -1 != fromAnalytic.find(fromImage[i]));
643            }
644
645            // Everything in the analytic list should appear in the gathered
646            // list.
647            for (int i = 0; i < fromAnalytic.count(); ++i) {
648                REPORTER_ASSERT(reporter, -1 != gatheredRefs.find(fromAnalytic[i]));
649            }
650        }
651    }
652}
653
654#ifdef SK_DEBUG
655// Ensure that deleting SkPicturePlayback does not assert. Asserts only fire in debug mode, so only
656// run in debug mode.
657static void test_deleting_empty_playback() {
658    SkPictureRecorder recorder;
659    // Creates an SkPictureRecord
660    recorder.beginRecording(0, 0, NULL, 0);
661    // Turns that into an SkPicturePlayback
662    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
663    // Deletes the old SkPicturePlayback, and creates a new SkPictureRecord
664    recorder.beginRecording(0, 0, NULL, 0);
665}
666
667// Ensure that serializing an empty picture does not assert. Likewise only runs in debug mode.
668static void test_serializing_empty_picture() {
669    SkPictureRecorder recorder;
670    recorder.beginRecording(0, 0, NULL, 0);
671    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
672    SkDynamicMemoryWStream stream;
673    picture->serialize(&stream);
674}
675#endif
676
677static void rand_op(SkCanvas* canvas, SkRandom& rand) {
678    SkPaint paint;
679    SkRect rect = SkRect::MakeWH(50, 50);
680
681    SkScalar unit = rand.nextUScalar1();
682    if (unit <= 0.3) {
683//        SkDebugf("save\n");
684        canvas->save();
685    } else if (unit <= 0.6) {
686//        SkDebugf("restore\n");
687        canvas->restore();
688    } else if (unit <= 0.9) {
689//        SkDebugf("clip\n");
690        canvas->clipRect(rect);
691    } else {
692//        SkDebugf("draw\n");
693        canvas->drawPaint(paint);
694    }
695}
696
697static void set_canvas_to_save_count_4(SkCanvas* canvas) {
698    canvas->restoreToCount(1);
699    canvas->save();
700    canvas->save();
701    canvas->save();
702}
703
704static void test_unbalanced_save_restores(skiatest::Reporter* reporter) {
705    SkCanvas testCanvas(100, 100);
706    set_canvas_to_save_count_4(&testCanvas);
707
708    REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
709
710    SkPaint paint;
711    SkRect rect = SkRect::MakeLTRB(-10000000, -10000000, 10000000, 10000000);
712
713    SkPictureRecorder recorder;
714
715    {
716        // Create picture with 2 unbalanced saves
717        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
718        canvas->save();
719        canvas->translate(10, 10);
720        canvas->drawRect(rect, paint);
721        canvas->save();
722        canvas->translate(10, 10);
723        canvas->drawRect(rect, paint);
724        SkAutoTUnref<SkPicture> extraSavePicture(recorder.endRecording());
725
726        testCanvas.drawPicture(*extraSavePicture);
727        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
728    }
729
730    set_canvas_to_save_count_4(&testCanvas);
731
732    {
733        // Create picture with 2 unbalanced restores
734        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
735        canvas->save();
736        canvas->translate(10, 10);
737        canvas->drawRect(rect, paint);
738        canvas->save();
739        canvas->translate(10, 10);
740        canvas->drawRect(rect, paint);
741        canvas->restore();
742        canvas->restore();
743        canvas->restore();
744        canvas->restore();
745        SkAutoTUnref<SkPicture> extraRestorePicture(recorder.endRecording());
746
747        testCanvas.drawPicture(*extraRestorePicture);
748        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
749    }
750
751    set_canvas_to_save_count_4(&testCanvas);
752
753    {
754        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
755        canvas->translate(10, 10);
756        canvas->drawRect(rect, paint);
757        SkAutoTUnref<SkPicture> noSavePicture(recorder.endRecording());
758
759        testCanvas.drawPicture(*noSavePicture);
760        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
761        REPORTER_ASSERT(reporter, testCanvas.getTotalMatrix().isIdentity());
762    }
763}
764
765static void test_peephole() {
766    SkRandom rand;
767
768    SkPictureRecorder recorder;
769
770    for (int j = 0; j < 100; j++) {
771        SkRandom rand2(rand); // remember the seed
772
773        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
774
775        for (int i = 0; i < 1000; ++i) {
776            rand_op(canvas, rand);
777        }
778        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
779
780        rand = rand2;
781    }
782
783    {
784        SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
785        SkRect rect = SkRect::MakeWH(50, 50);
786
787        for (int i = 0; i < 100; ++i) {
788            canvas->save();
789        }
790        while (canvas->getSaveCount() > 1) {
791            canvas->clipRect(rect);
792            canvas->restore();
793        }
794        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
795    }
796}
797
798#ifndef SK_DEBUG
799// Only test this is in release mode. We deliberately crash in debug mode, since a valid caller
800// should never do this.
801static void test_bad_bitmap() {
802    // This bitmap has a width and height but no pixels. As a result, attempting to record it will
803    // fail.
804    SkBitmap bm;
805    bm.setConfig(SkImageInfo::MakeN32Premul(100, 100));
806    SkPictureRecorder recorder;
807    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100, NULL, 0);
808    recordingCanvas->drawBitmap(bm, 0, 0);
809    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
810
811    SkCanvas canvas;
812    canvas.drawPicture(*picture);
813}
814#endif
815
816static SkData* encode_bitmap_to_data(size_t*, const SkBitmap& bm) {
817    return SkImageEncoder::EncodeData(bm, SkImageEncoder::kPNG_Type, 100);
818}
819
820static SkData* serialized_picture_from_bitmap(const SkBitmap& bitmap) {
821    SkPictureRecorder recorder;
822    SkCanvas* canvas = recorder.beginRecording(bitmap.width(), bitmap.height(), NULL, 0);
823    canvas->drawBitmap(bitmap, 0, 0);
824    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
825
826    SkDynamicMemoryWStream wStream;
827    picture->serialize(&wStream, &encode_bitmap_to_data);
828    return wStream.copyToData();
829}
830
831struct ErrorContext {
832    int fErrors;
833    skiatest::Reporter* fReporter;
834};
835
836static void assert_one_parse_error_cb(SkError error, void* context) {
837    ErrorContext* errorContext = static_cast<ErrorContext*>(context);
838    errorContext->fErrors++;
839    // This test only expects one error, and that is a kParseError. If there are others,
840    // there is some unknown problem.
841    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, 1 == errorContext->fErrors,
842                            "This threw more errors than expected.");
843    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, kParseError_SkError == error,
844                            SkGetLastErrorString());
845}
846
847static void test_bitmap_with_encoded_data(skiatest::Reporter* reporter) {
848    // Create a bitmap that will be encoded.
849    SkBitmap original;
850    make_bm(&original, 100, 100, SK_ColorBLUE, true);
851    SkDynamicMemoryWStream wStream;
852    if (!SkImageEncoder::EncodeStream(&wStream, original, SkImageEncoder::kPNG_Type, 100)) {
853        return;
854    }
855    SkAutoDataUnref data(wStream.copyToData());
856
857    SkBitmap bm;
858    bool installSuccess = SkInstallDiscardablePixelRef(
859         SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options()), &bm, NULL);
860    REPORTER_ASSERT(reporter, installSuccess);
861
862    // Write both bitmaps to pictures, and ensure that the resulting data streams are the same.
863    // Flattening original will follow the old path of performing an encode, while flattening bm
864    // will use the already encoded data.
865    SkAutoDataUnref picture1(serialized_picture_from_bitmap(original));
866    SkAutoDataUnref picture2(serialized_picture_from_bitmap(bm));
867    REPORTER_ASSERT(reporter, picture1->equals(picture2));
868    // Now test that a parse error was generated when trying to create a new SkPicture without
869    // providing a function to decode the bitmap.
870    ErrorContext context;
871    context.fErrors = 0;
872    context.fReporter = reporter;
873    SkSetErrorCallback(assert_one_parse_error_cb, &context);
874    SkMemoryStream pictureStream(picture1);
875    SkClearLastError();
876    SkAutoUnref pictureFromStream(SkPicture::CreateFromStream(&pictureStream, NULL));
877    REPORTER_ASSERT(reporter, pictureFromStream.get() != NULL);
878    SkClearLastError();
879    SkSetErrorCallback(NULL, NULL);
880}
881
882static void test_clone_empty(skiatest::Reporter* reporter) {
883    // This is a regression test for crbug.com/172062
884    // Before the fix, we used to crash accessing a null pointer when we
885    // had a picture with no paints. This test passes by not crashing.
886    {
887        SkPictureRecorder recorder;
888        recorder.beginRecording(1, 1, NULL, 0);
889        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
890        SkAutoTUnref<SkPicture> destPicture(picture->clone());
891        REPORTER_ASSERT(reporter, NULL != destPicture);
892    }
893}
894
895static void test_draw_empty(skiatest::Reporter* reporter) {
896    SkBitmap result;
897    make_bm(&result, 2, 2, SK_ColorBLACK, false);
898
899    SkCanvas canvas(result);
900
901    {
902        // stock SkPicture
903        SkPictureRecorder recorder;
904        recorder.beginRecording(1, 1, NULL, 0);
905        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
906
907        canvas.drawPicture(*picture);
908    }
909
910    {
911        // tile grid
912        SkTileGridFactory::TileGridInfo gridInfo;
913        gridInfo.fMargin.setEmpty();
914        gridInfo.fOffset.setZero();
915        gridInfo.fTileInterval.set(1, 1);
916
917        SkTileGridFactory factory(gridInfo);
918        SkPictureRecorder recorder;
919        recorder.beginRecording(1, 1, &factory, 0);
920        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
921
922        canvas.drawPicture(*picture);
923    }
924
925    {
926        // RTree
927        SkRTreeFactory factory;
928        SkPictureRecorder recorder;
929        recorder.beginRecording(1, 1, &factory, 0);
930        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
931
932        canvas.drawPicture(*picture);
933    }
934
935    {
936        // quad tree
937        SkQuadTreeFactory factory;
938        SkPictureRecorder recorder;
939        recorder.beginRecording(1, 1, &factory, 0);
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, NULL,
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, NULL,
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, NULL,
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, NULL,
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, NULL,
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, NULL,
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, NULL, 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, NULL, 0);
1111    SkAutoTUnref<SkPicture> childPlain(recorder.endRecording());
1112    REPORTER_ASSERT(reporter, !childPlain->willPlayBackBitmaps()); // 0
1113
1114    recorder.beginRecording(10, 10, NULL, 0)->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, NULL, 0);
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, NULL, 0);
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, NULL, 0);
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, NULL, 0);
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, NULL, 0);
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, NULL, 0));
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