PictureTest.cpp revision 9e6835da41e344ef3c4c35036fabfdb0a4146c33 
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 "SkBBoxHierarchy.h"
9#include "SkBlurImageFilter.h"
10#include "SkCanvas.h"
11#include "SkColorPriv.h"
12#include "SkDashPathEffect.h"
13#include "SkData.h"
14#include "SkDecodingImageGenerator.h"
15#include "SkError.h"
16#include "SkImageEncoder.h"
17#include "SkImageGenerator.h"
18#include "SkPaint.h"
19#include "SkPicture.h"
20#include "SkPictureRecorder.h"
21#include "SkPictureUtils.h"
22#include "SkPixelRef.h"
23#include "SkRRect.h"
24#include "SkRandom.h"
25#include "SkShader.h"
26#include "SkStream.h"
27
28#if SK_SUPPORT_GPU
29#include "SkSurface.h"
30#include "GrContextFactory.h"
31#include "GrPictureUtils.h"
32#endif
33#include "Test.h"
34
35#include "SkLumaColorFilter.h"
36#include "SkColorFilterImageFilter.h"
37
38static const int gColorScale = 30;
39static const int gColorOffset = 60;
40
41static void make_bm(SkBitmap* bm, int w, int h, SkColor color, bool immutable) {
42    bm->allocN32Pixels(w, h);
43    bm->eraseColor(color);
44    if (immutable) {
45        bm->setImmutable();
46    }
47}
48
49static void make_checkerboard(SkBitmap* bm, int w, int h, bool immutable) {
50    SkASSERT(w % 2 == 0);
51    SkASSERT(h % 2 == 0);
52    bm->allocPixels(SkImageInfo::Make(w, h, kAlpha_8_SkColorType,
53                                      kPremul_SkAlphaType));
54    SkAutoLockPixels lock(*bm);
55    for (int y = 0; y < h; y += 2) {
56        uint8_t* s = bm->getAddr8(0, y);
57        for (int x = 0; x < w; x += 2) {
58            *s++ = 0xFF;
59            *s++ = 0x00;
60        }
61        s = bm->getAddr8(0, y + 1);
62        for (int x = 0; x < w; x += 2) {
63            *s++ = 0x00;
64            *s++ = 0xFF;
65        }
66    }
67    if (immutable) {
68        bm->setImmutable();
69    }
70}
71
72static void init_paint(SkPaint* paint, const SkBitmap &bm) {
73    SkShader* shader = SkShader::CreateBitmapShader(bm,
74                                                    SkShader::kClamp_TileMode,
75                                                    SkShader::kClamp_TileMode);
76    paint->setShader(shader)->unref();
77}
78
79typedef void (*DrawBitmapProc)(SkCanvas*, const SkBitmap&,
80                               const SkBitmap&, const SkPoint&,
81                               SkTDArray<SkPixelRef*>* usedPixRefs);
82
83static void drawpaint_proc(SkCanvas* canvas, const SkBitmap& bm,
84                           const SkBitmap& altBM, const SkPoint& pos,
85                           SkTDArray<SkPixelRef*>* usedPixRefs) {
86    SkPaint paint;
87    init_paint(&paint, bm);
88
89    canvas->drawPaint(paint);
90    *usedPixRefs->append() = bm.pixelRef();
91}
92
93static void drawpoints_proc(SkCanvas* canvas, const SkBitmap& bm,
94                            const SkBitmap& altBM, const SkPoint& pos,
95                            SkTDArray<SkPixelRef*>* usedPixRefs) {
96    SkPaint paint;
97    init_paint(&paint, bm);
98
99    // draw a rect
100    SkPoint points[5] = {
101        { pos.fX, pos.fY },
102        { pos.fX + bm.width() - 1, pos.fY },
103        { pos.fX + bm.width() - 1, pos.fY + bm.height() - 1 },
104        { pos.fX, pos.fY + bm.height() - 1 },
105        { pos.fX, pos.fY },
106    };
107
108    canvas->drawPoints(SkCanvas::kPolygon_PointMode, 5, points, paint);
109    *usedPixRefs->append() = bm.pixelRef();
110}
111
112static void drawrect_proc(SkCanvas* canvas, const SkBitmap& bm,
113                          const SkBitmap& altBM, const SkPoint& pos,
114                          SkTDArray<SkPixelRef*>* usedPixRefs) {
115    SkPaint paint;
116    init_paint(&paint, bm);
117
118    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
119    r.offset(pos.fX, pos.fY);
120
121    canvas->drawRect(r, paint);
122    *usedPixRefs->append() = bm.pixelRef();
123}
124
125static void drawoval_proc(SkCanvas* canvas, const SkBitmap& bm,
126                          const SkBitmap& altBM, const SkPoint& pos,
127                          SkTDArray<SkPixelRef*>* usedPixRefs) {
128    SkPaint paint;
129    init_paint(&paint, bm);
130
131    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
132    r.offset(pos.fX, pos.fY);
133
134    canvas->drawOval(r, paint);
135    *usedPixRefs->append() = bm.pixelRef();
136}
137
138static void drawrrect_proc(SkCanvas* canvas, const SkBitmap& bm,
139                           const SkBitmap& altBM, const SkPoint& pos,
140                           SkTDArray<SkPixelRef*>* usedPixRefs) {
141    SkPaint paint;
142    init_paint(&paint, bm);
143
144    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
145    r.offset(pos.fX, pos.fY);
146
147    SkRRect rr;
148    rr.setRectXY(r, SkIntToScalar(bm.width())/4, SkIntToScalar(bm.height())/4);
149    canvas->drawRRect(rr, paint);
150    *usedPixRefs->append() = bm.pixelRef();
151}
152
153static void drawpath_proc(SkCanvas* canvas, const SkBitmap& bm,
154                          const SkBitmap& altBM, const SkPoint& pos,
155                          SkTDArray<SkPixelRef*>* usedPixRefs) {
156    SkPaint paint;
157    init_paint(&paint, bm);
158
159    SkPath path;
160    path.lineTo(bm.width()/2.0f, SkIntToScalar(bm.height()));
161    path.lineTo(SkIntToScalar(bm.width()), 0);
162    path.close();
163    path.offset(pos.fX, pos.fY);
164
165    canvas->drawPath(path, paint);
166    *usedPixRefs->append() = bm.pixelRef();
167}
168
169static void drawbitmap_proc(SkCanvas* canvas, const SkBitmap& bm,
170                            const SkBitmap& altBM, const SkPoint& pos,
171                            SkTDArray<SkPixelRef*>* usedPixRefs) {
172    canvas->drawBitmap(bm, pos.fX, pos.fY, NULL);
173    *usedPixRefs->append() = bm.pixelRef();
174}
175
176static void drawbitmap_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
177                                       const SkBitmap& altBM, const SkPoint& pos,
178                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
179    SkPaint paint;
180    init_paint(&paint, bm);
181
182    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
183    canvas->drawBitmap(altBM, pos.fX, pos.fY, &paint);
184    *usedPixRefs->append() = bm.pixelRef();
185    *usedPixRefs->append() = altBM.pixelRef();
186}
187
188static void drawsprite_proc(SkCanvas* canvas, const SkBitmap& bm,
189                            const SkBitmap& altBM, const SkPoint& pos,
190                            SkTDArray<SkPixelRef*>* usedPixRefs) {
191    const SkMatrix& ctm = canvas->getTotalMatrix();
192
193    SkPoint p(pos);
194    ctm.mapPoints(&p, 1);
195
196    canvas->drawSprite(bm, (int)p.fX, (int)p.fY, NULL);
197    *usedPixRefs->append() = bm.pixelRef();
198}
199
200#if 0
201// Although specifiable, this case doesn't seem to make sense (i.e., the
202// bitmap in the shader is never used).
203static void drawsprite_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
204                                       const SkBitmap& altBM, const SkPoint& pos,
205                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
206    SkPaint paint;
207    init_paint(&paint, bm);
208
209    const SkMatrix& ctm = canvas->getTotalMatrix();
210
211    SkPoint p(pos);
212    ctm.mapPoints(&p, 1);
213
214    canvas->drawSprite(altBM, (int)p.fX, (int)p.fY, &paint);
215    *usedPixRefs->append() = bm.pixelRef();
216    *usedPixRefs->append() = altBM.pixelRef();
217}
218#endif
219
220static void drawbitmaprect_proc(SkCanvas* canvas, const SkBitmap& bm,
221                                const SkBitmap& altBM, const SkPoint& pos,
222                                SkTDArray<SkPixelRef*>* usedPixRefs) {
223    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
224
225    r.offset(pos.fX, pos.fY);
226    canvas->drawBitmapRectToRect(bm, NULL, r, NULL);
227    *usedPixRefs->append() = bm.pixelRef();
228}
229
230static void drawbitmaprect_withshader_proc(SkCanvas* canvas,
231                                           const SkBitmap& bm,
232                                           const SkBitmap& altBM,
233                                           const SkPoint& pos,
234                                           SkTDArray<SkPixelRef*>* usedPixRefs) {
235    SkPaint paint;
236    init_paint(&paint, bm);
237
238    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
239    r.offset(pos.fX, pos.fY);
240
241    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
242    canvas->drawBitmapRectToRect(altBM, NULL, r, &paint);
243    *usedPixRefs->append() = bm.pixelRef();
244    *usedPixRefs->append() = altBM.pixelRef();
245}
246
247static void drawtext_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    canvas->drawText("0", 1, pos.fX, pos.fY+bm.width(), paint);
255    *usedPixRefs->append() = bm.pixelRef();
256}
257
258static void drawpostext_proc(SkCanvas* canvas, const SkBitmap& bm,
259                             const SkBitmap& altBM, const SkPoint& pos,
260                             SkTDArray<SkPixelRef*>* usedPixRefs) {
261    SkPaint paint;
262    init_paint(&paint, bm);
263    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
264
265    SkPoint point = { pos.fX, pos.fY + bm.height() };
266    canvas->drawPosText("O", 1, &point, paint);
267    *usedPixRefs->append() = bm.pixelRef();
268}
269
270static void drawtextonpath_proc(SkCanvas* canvas, const SkBitmap& bm,
271                                const SkBitmap& altBM, const SkPoint& pos,
272                                SkTDArray<SkPixelRef*>* usedPixRefs) {
273    SkPaint paint;
274
275    init_paint(&paint, bm);
276    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
277
278    SkPath path;
279    path.lineTo(SkIntToScalar(bm.width()), 0);
280    path.offset(pos.fX, pos.fY+bm.height());
281
282    canvas->drawTextOnPath("O", 1, path, NULL, paint);
283    *usedPixRefs->append() = bm.pixelRef();
284}
285
286static void drawverts_proc(SkCanvas* canvas, const SkBitmap& bm,
287                           const SkBitmap& altBM, const SkPoint& pos,
288                           SkTDArray<SkPixelRef*>* usedPixRefs) {
289    SkPaint paint;
290    init_paint(&paint, bm);
291
292    SkPoint verts[4] = {
293        { pos.fX, pos.fY },
294        { pos.fX + bm.width(), pos.fY },
295        { pos.fX + bm.width(), pos.fY + bm.height() },
296        { pos.fX, pos.fY + bm.height() }
297    };
298    SkPoint texs[4] = { { 0, 0 },
299                        { SkIntToScalar(bm.width()), 0 },
300                        { SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) },
301                        { 0, SkIntToScalar(bm.height()) } };
302    uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
303
304    canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 4, verts, texs, NULL, NULL,
305                         indices, 6, paint);
306    *usedPixRefs->append() = bm.pixelRef();
307}
308
309// Return a picture with the bitmaps drawn at the specified positions.
310static SkPicture* record_bitmaps(const SkBitmap bm[],
311                                 const SkPoint pos[],
312                                 SkTDArray<SkPixelRef*> analytic[],
313                                 int count,
314                                 DrawBitmapProc proc) {
315    SkPictureRecorder recorder;
316    SkCanvas* canvas = recorder.beginRecording(1000, 1000);
317    for (int i = 0; i < count; ++i) {
318        analytic[i].rewind();
319        canvas->save();
320        SkRect clipRect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY,
321                                           SkIntToScalar(bm[i].width()),
322                                           SkIntToScalar(bm[i].height()));
323        canvas->clipRect(clipRect, SkRegion::kIntersect_Op);
324        proc(canvas, bm[i], bm[count+i], pos[i], &analytic[i]);
325        canvas->restore();
326    }
327    return recorder.endRecording();
328}
329
330static void rand_rect(SkRect* rect, SkRandom& rand, SkScalar W, SkScalar H) {
331    rect->fLeft   = rand.nextRangeScalar(-W, 2*W);
332    rect->fTop    = rand.nextRangeScalar(-H, 2*H);
333    rect->fRight  = rect->fLeft + rand.nextRangeScalar(0, W);
334    rect->fBottom = rect->fTop + rand.nextRangeScalar(0, H);
335
336    // we integralize rect to make our tests more predictable, since Gather is
337    // a little sloppy.
338    SkIRect ir;
339    rect->round(&ir);
340    rect->set(ir);
341}
342
343static void draw(SkPicture* pic, int width, int height, SkBitmap* result) {
344    make_bm(result, width, height, SK_ColorBLACK, false);
345
346    SkCanvas canvas(*result);
347    canvas.drawPicture(pic);
348}
349
350template <typename T> int find_index(const T* array, T elem, int count) {
351    for (int i = 0; i < count; ++i) {
352        if (array[i] == elem) {
353            return i;
354        }
355    }
356    return -1;
357}
358
359// Return true if 'ref' is found in array[]
360static bool find(SkPixelRef const * const * array, SkPixelRef const * ref, int count) {
361    return find_index<const SkPixelRef*>(array, ref, count) >= 0;
362}
363
364// Look at each pixel that is inside 'subset', and if its color appears in
365// colors[], find the corresponding value in refs[] and append that ref into
366// array, skipping duplicates of the same value.
367// Note that gathering pixelRefs from rendered colors suffers from the problem
368// that multiple simultaneous textures (e.g., A8 for alpha and 8888 for color)
369// isn't easy to reconstruct.
370static void gather_from_image(const SkBitmap& bm, SkPixelRef* const refs[],
371                              int count, SkTDArray<SkPixelRef*>* array,
372                              const SkRect& subset) {
373    SkIRect ir;
374    subset.roundOut(&ir);
375
376    if (!ir.intersect(0, 0, bm.width()-1, bm.height()-1)) {
377        return;
378    }
379
380    // Since we only want to return unique values in array, when we scan we just
381    // set a bit for each index'd color found. In practice we only have a few
382    // distinct colors, so we just use an int's bits as our array. Hence the
383    // assert that count <= number-of-bits-in-our-int.
384    SkASSERT((unsigned)count <= 32);
385    uint32_t bitarray = 0;
386
387    SkAutoLockPixels alp(bm);
388
389    for (int y = ir.fTop; y < ir.fBottom; ++y) {
390        for (int x = ir.fLeft; x < ir.fRight; ++x) {
391            SkPMColor pmc = *bm.getAddr32(x, y);
392            // the only good case where the color is not found would be if
393            // the color is transparent, meaning no bitmap was drawn in that
394            // pixel.
395            if (pmc) {
396                uint32_t index = SkGetPackedR32(pmc);
397                SkASSERT(SkGetPackedG32(pmc) == index);
398                SkASSERT(SkGetPackedB32(pmc) == index);
399                if (0 == index) {
400                    continue;           // background color
401                }
402                SkASSERT(0 == (index - gColorOffset) % gColorScale);
403                index = (index - gColorOffset) / gColorScale;
404                SkASSERT(static_cast<int>(index) < count);
405                bitarray |= 1 << index;
406            }
407        }
408    }
409
410    for (int i = 0; i < count; ++i) {
411        if (bitarray & (1 << i)) {
412            *array->append() = refs[i];
413        }
414    }
415}
416
417static void gather_from_analytic(const SkPoint pos[], SkScalar w, SkScalar h,
418                                 const SkTDArray<SkPixelRef*> analytic[],
419                                 int count,
420                                 SkTDArray<SkPixelRef*>* result,
421                                 const SkRect& subset) {
422    for (int i = 0; i < count; ++i) {
423        SkRect rect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY, w, h);
424
425        if (SkRect::Intersects(subset, rect)) {
426            result->append(analytic[i].count(), analytic[i].begin());
427        }
428    }
429}
430
431
432static const struct {
433    const DrawBitmapProc proc;
434    const char* const desc;
435} gProcs[] = {
436    {drawpaint_proc, "drawpaint"},
437    {drawpoints_proc, "drawpoints"},
438    {drawrect_proc, "drawrect"},
439    {drawoval_proc, "drawoval"},
440    {drawrrect_proc, "drawrrect"},
441    {drawpath_proc, "drawpath"},
442    {drawbitmap_proc, "drawbitmap"},
443    {drawbitmap_withshader_proc, "drawbitmap_withshader"},
444    {drawsprite_proc, "drawsprite"},
445#if 0
446    {drawsprite_withshader_proc, "drawsprite_withshader"},
447#endif
448    {drawbitmaprect_proc, "drawbitmaprect"},
449    {drawbitmaprect_withshader_proc, "drawbitmaprect_withshader"},
450    {drawtext_proc, "drawtext"},
451    {drawpostext_proc, "drawpostext"},
452    {drawtextonpath_proc, "drawtextonpath"},
453    {drawverts_proc, "drawverts"},
454};
455
456static void create_textures(SkBitmap* bm, SkPixelRef** refs, int num, int w, int h) {
457    // Our convention is that the color components contain an encoding of
458    // the index of their corresponding bitmap/pixelref. (0,0,0,0) is
459    // reserved for the background
460    for (int i = 0; i < num; ++i) {
461        make_bm(&bm[i], w, h,
462                SkColorSetARGB(0xFF,
463                               gColorScale*i+gColorOffset,
464                               gColorScale*i+gColorOffset,
465                               gColorScale*i+gColorOffset),
466                true);
467        refs[i] = bm[i].pixelRef();
468    }
469
470    // The A8 alternate bitmaps are all BW checkerboards
471    for (int i = 0; i < num; ++i) {
472        make_checkerboard(&bm[num+i], w, h, true);
473        refs[num+i] = bm[num+i].pixelRef();
474    }
475}
476
477static void test_gatherpixelrefs(skiatest::Reporter* reporter) {
478    const int IW = 32;
479    const int IH = IW;
480    const SkScalar W = SkIntToScalar(IW);
481    const SkScalar H = W;
482
483    static const int N = 4;
484    SkBitmap bm[2*N];
485    SkPixelRef* refs[2*N];
486    SkTDArray<SkPixelRef*> analytic[N];
487
488    const SkPoint pos[N] = {
489        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
490    };
491
492    create_textures(bm, refs, N, IW, IH);
493
494    SkRandom rand;
495    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
496        SkAutoTUnref<SkPicture> pic(
497            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
498
499        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
500        // quick check for a small piece of each quadrant, which should just
501        // contain 1 or 2 bitmaps.
502        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
503            SkRect r;
504            r.set(2, 2, W - 2, H - 2);
505            r.offset(pos[i].fX, pos[i].fY);
506            SkAutoDataUnref data(SkPictureUtils::GatherPixelRefs(pic, r));
507            if (!data) {
508                ERRORF(reporter, "SkPictureUtils::GatherPixelRefs returned "
509                       "NULL for %s.", gProcs[k].desc);
510                continue;
511            }
512            SkPixelRef** gatheredRefs = (SkPixelRef**)data->data();
513            int count = static_cast<int>(data->size() / sizeof(SkPixelRef*));
514            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
515            if (1 == count) {
516                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
517            } else if (2 == count) {
518                REPORTER_ASSERT(reporter,
519                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
520                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
521            }
522        }
523
524        SkBitmap image;
525        draw(pic, 2*IW, 2*IH, &image);
526
527        // Test a bunch of random (mostly) rects, and compare the gather results
528        // with a deduced list of refs by looking at the colors drawn.
529        for (int j = 0; j < 100; ++j) {
530            SkRect r;
531            rand_rect(&r, rand, 2*W, 2*H);
532
533            SkTDArray<SkPixelRef*> fromImage;
534            gather_from_image(image, refs, N, &fromImage, r);
535
536            SkTDArray<SkPixelRef*> fromAnalytic;
537            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
538
539            SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
540            size_t dataSize = data ? data->size() : 0;
541            int gatherCount = static_cast<int>(dataSize / sizeof(SkPixelRef*));
542            SkASSERT(gatherCount * sizeof(SkPixelRef*) == dataSize);
543            SkPixelRef** gatherRefs = data ? (SkPixelRef**)(data->data()) : NULL;
544            SkAutoDataUnref adu(data);
545
546            // Everything that we saw drawn should appear in the analytic list
547            // but the analytic list may contain some pixelRefs that were not
548            // seen in the image (e.g., A8 textures used as masks)
549            for (int i = 0; i < fromImage.count(); ++i) {
550                if (-1 == fromAnalytic.find(fromImage[i])) {
551                    ERRORF(reporter, "PixelRef missing %d %s",
552                           i, gProcs[k].desc);
553                }
554            }
555
556            /*
557             *  GatherPixelRefs is conservative, so it can return more bitmaps
558             *  than are strictly required. Thus our check here is only that
559             *  Gather didn't miss any that we actually needed. Even that isn't
560             *  a strict requirement on Gather, which is meant to be quick and
561             *  only mostly-correct, but at the moment this test should work.
562             */
563            for (int i = 0; i < fromAnalytic.count(); ++i) {
564                bool found = find(gatherRefs, fromAnalytic[i], gatherCount);
565                if (!found) {
566                    ERRORF(reporter, "PixelRef missing %d %s",
567                           i, gProcs[k].desc);
568                }
569#if 0
570                // enable this block of code to debug failures, as it will rerun
571                // the case that failed.
572                if (!found) {
573                    SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
574                    size_t dataSize = data ? data->size() : 0;
575                }
576#endif
577            }
578        }
579    }
580}
581
582/* Hit a few SkPicture::Analysis cases not handled elsewhere. */
583static void test_analysis(skiatest::Reporter* reporter) {
584    SkPictureRecorder recorder;
585
586    SkCanvas* canvas = recorder.beginRecording(100, 100);
587    {
588        canvas->drawRect(SkRect::MakeWH(10, 10), SkPaint ());
589    }
590    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
591    REPORTER_ASSERT(reporter, !picture->willPlayBackBitmaps());
592
593    canvas = recorder.beginRecording(100, 100);
594    {
595        SkPaint paint;
596        // CreateBitmapShader is too smart for us; an empty (or 1x1) bitmap shader
597        // gets optimized into a non-bitmap form, so we create a 2x2 bitmap here.
598        SkBitmap bitmap;
599        bitmap.allocPixels(SkImageInfo::MakeN32Premul(2, 2));
600        bitmap.eraseColor(SK_ColorBLUE);
601        *(bitmap.getAddr32(0, 0)) = SK_ColorGREEN;
602        SkShader* shader = SkShader::CreateBitmapShader(bitmap, SkShader::kClamp_TileMode,
603                                                        SkShader::kClamp_TileMode);
604        paint.setShader(shader)->unref();
605        REPORTER_ASSERT(reporter,
606                        shader->asABitmap(NULL, NULL, NULL) == SkShader::kDefault_BitmapType);
607
608        canvas->drawRect(SkRect::MakeWH(10, 10), paint);
609    }
610    picture.reset(recorder.endRecording());
611    REPORTER_ASSERT(reporter, picture->willPlayBackBitmaps());
612}
613
614
615static void test_gatherpixelrefsandrects(skiatest::Reporter* reporter) {
616    const int IW = 32;
617    const int IH = IW;
618    const SkScalar W = SkIntToScalar(IW);
619    const SkScalar H = W;
620
621    static const int N = 4;
622    SkBitmap bm[2*N];
623    SkPixelRef* refs[2*N];
624    SkTDArray<SkPixelRef*> analytic[N];
625
626    const SkPoint pos[N] = {
627        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
628    };
629
630    create_textures(bm, refs, N, IW, IH);
631
632    SkRandom rand;
633    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
634        SkAutoTUnref<SkPicture> pic(
635            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
636
637        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
638
639        SkAutoTUnref<SkPictureUtils::SkPixelRefContainer> prCont(
640                                new SkPictureUtils::SkPixelRefsAndRectsList);
641
642        SkPictureUtils::GatherPixelRefsAndRects(pic, prCont);
643
644        // quick check for a small piece of each quadrant, which should just
645        // contain 1 or 2 bitmaps.
646        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
647            SkRect r;
648            r.set(2, 2, W - 2, H - 2);
649            r.offset(pos[i].fX, pos[i].fY);
650
651            SkTDArray<SkPixelRef*> gatheredRefs;
652            prCont->query(r, &gatheredRefs);
653
654            int count = gatheredRefs.count();
655            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
656            if (1 == count) {
657                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
658            } else if (2 == count) {
659                REPORTER_ASSERT(reporter,
660                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
661                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
662            }
663        }
664
665        SkBitmap image;
666        draw(pic, 2*IW, 2*IH, &image);
667
668        // Test a bunch of random (mostly) rects, and compare the gather results
669        // with the analytic results and the pixel refs seen in a rendering.
670        for (int j = 0; j < 100; ++j) {
671            SkRect r;
672            rand_rect(&r, rand, 2*W, 2*H);
673
674            SkTDArray<SkPixelRef*> fromImage;
675            gather_from_image(image, refs, N, &fromImage, r);
676
677            SkTDArray<SkPixelRef*> fromAnalytic;
678            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
679
680            SkTDArray<SkPixelRef*> gatheredRefs;
681            prCont->query(r, &gatheredRefs);
682
683            // Everything that we saw drawn should appear in the analytic list
684            // but the analytic list may contain some pixelRefs that were not
685            // seen in the image (e.g., A8 textures used as masks)
686            for (int i = 0; i < fromImage.count(); ++i) {
687                REPORTER_ASSERT(reporter, -1 != fromAnalytic.find(fromImage[i]));
688            }
689
690            // Everything in the analytic list should appear in the gathered
691            // list.
692            for (int i = 0; i < fromAnalytic.count(); ++i) {
693                REPORTER_ASSERT(reporter, -1 != gatheredRefs.find(fromAnalytic[i]));
694            }
695        }
696    }
697}
698
699#ifdef SK_DEBUG
700// Ensure that deleting an empty SkPicture does not assert. Asserts only fire
701// in debug mode, so only run in debug mode.
702static void test_deleting_empty_picture() {
703    SkPictureRecorder recorder;
704    // Creates an SkPictureRecord
705    recorder.beginRecording(0, 0);
706    // Turns that into an SkPicture
707    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
708    // Ceates a new SkPictureRecord
709    recorder.beginRecording(0, 0);
710}
711
712// Ensure that serializing an empty picture does not assert. Likewise only runs in debug mode.
713static void test_serializing_empty_picture() {
714    SkPictureRecorder recorder;
715    recorder.beginRecording(0, 0);
716    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
717    SkDynamicMemoryWStream stream;
718    picture->serialize(&stream);
719}
720#endif
721
722static void rand_op(SkCanvas* canvas, SkRandom& rand) {
723    SkPaint paint;
724    SkRect rect = SkRect::MakeWH(50, 50);
725
726    SkScalar unit = rand.nextUScalar1();
727    if (unit <= 0.3) {
728//        SkDebugf("save\n");
729        canvas->save();
730    } else if (unit <= 0.6) {
731//        SkDebugf("restore\n");
732        canvas->restore();
733    } else if (unit <= 0.9) {
734//        SkDebugf("clip\n");
735        canvas->clipRect(rect);
736    } else {
737//        SkDebugf("draw\n");
738        canvas->drawPaint(paint);
739    }
740}
741
742#if SK_SUPPORT_GPU
743
744static void test_gpu_veto(skiatest::Reporter* reporter) {
745    SkPictureRecorder recorder;
746
747    SkCanvas* canvas = recorder.beginRecording(100, 100);
748    {
749        SkPath path;
750        path.moveTo(0, 0);
751        path.lineTo(50, 50);
752
753        SkScalar intervals[] = { 1.0f, 1.0f };
754        SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
755
756        SkPaint paint;
757        paint.setStyle(SkPaint::kStroke_Style);
758        paint.setPathEffect(dash);
759
760        canvas->drawPath(path, paint);
761    }
762    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
763    // path effects currently render an SkPicture undesireable for GPU rendering
764
765    const char *reason = NULL;
766    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL, &reason));
767    REPORTER_ASSERT(reporter, reason);
768
769    canvas = recorder.beginRecording(100, 100);
770    {
771        SkPath path;
772
773        path.moveTo(0, 0);
774        path.lineTo(0, 50);
775        path.lineTo(25, 25);
776        path.lineTo(50, 50);
777        path.lineTo(50, 0);
778        path.close();
779        REPORTER_ASSERT(reporter, !path.isConvex());
780
781        SkPaint paint;
782        paint.setAntiAlias(true);
783        for (int i = 0; i < 50; ++i) {
784            canvas->drawPath(path, paint);
785        }
786    }
787    picture.reset(recorder.endRecording());
788    // A lot of AA concave paths currently render an SkPicture undesireable for GPU rendering
789    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
790
791    canvas = recorder.beginRecording(100, 100);
792    {
793        SkPath path;
794
795        path.moveTo(0, 0);
796        path.lineTo(0, 50);
797        path.lineTo(25, 25);
798        path.lineTo(50, 50);
799        path.lineTo(50, 0);
800        path.close();
801        REPORTER_ASSERT(reporter, !path.isConvex());
802
803        SkPaint paint;
804        paint.setAntiAlias(true);
805        paint.setStyle(SkPaint::kStroke_Style);
806        paint.setStrokeWidth(0);
807        for (int i = 0; i < 50; ++i) {
808            canvas->drawPath(path, paint);
809        }
810    }
811    picture.reset(recorder.endRecording());
812    // hairline stroked AA concave paths are fine for GPU rendering
813    REPORTER_ASSERT(reporter, picture->suitableForGpuRasterization(NULL));
814
815    canvas = recorder.beginRecording(100, 100);
816    {
817        SkPaint paint;
818        SkScalar intervals [] = { 10, 20 };
819        SkPathEffect* pe = SkDashPathEffect::Create(intervals, 2, 25);
820        paint.setPathEffect(pe)->unref();
821
822        SkPoint points [2] = { { 0, 0 }, { 100, 0 } };
823        canvas->drawPoints(SkCanvas::kLines_PointMode, 2, points, paint);
824    }
825    picture.reset(recorder.endRecording());
826    // fast-path dashed effects are fine for GPU rendering ...
827    REPORTER_ASSERT(reporter, picture->suitableForGpuRasterization(NULL));
828
829    canvas = recorder.beginRecording(100, 100);
830    {
831        SkPaint paint;
832        SkScalar intervals [] = { 10, 20 };
833        SkPathEffect* pe = SkDashPathEffect::Create(intervals, 2, 25);
834        paint.setPathEffect(pe)->unref();
835
836        canvas->drawRect(SkRect::MakeWH(10, 10), paint);
837    }
838    picture.reset(recorder.endRecording());
839    // ... but only when applied to drawPoint() calls
840    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
841
842    // Nest the previous picture inside a new one.
843    canvas = recorder.beginRecording(100, 100);
844    {
845        canvas->drawPicture(picture.get());
846    }
847    picture.reset(recorder.endRecording());
848    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
849}
850
851static void test_gpu_picture_optimization(skiatest::Reporter* reporter,
852                                          GrContextFactory* factory) {
853    for (int i= 0; i < GrContextFactory::kGLContextTypeCnt; ++i) {
854        GrContextFactory::GLContextType glCtxType = (GrContextFactory::GLContextType) i;
855
856        if (!GrContextFactory::IsRenderingGLContext(glCtxType)) {
857            continue;
858        }
859
860        GrContext* context = factory->get(glCtxType);
861
862        if (NULL == context) {
863            continue;
864        }
865
866        static const int kWidth = 100;
867        static const int kHeight = 100;
868
869        SkAutoTUnref<SkPicture> pict, child;
870
871        {
872            SkPictureRecorder recorder;
873
874            SkCanvas* c = recorder.beginRecording(SkIntToScalar(kWidth), SkIntToScalar(kHeight));
875
876            c->saveLayer(NULL, NULL);
877            c->restore();
878
879            child.reset(recorder.endRecording());
880        }
881
882        // create a picture with the structure:
883        // 1)
884        //      SaveLayer
885        //      Restore
886        // 2)
887        //      SaveLayer
888        //          Translate
889        //          SaveLayer w/ bound
890        //          Restore
891        //      Restore
892        // 3)
893        //      SaveLayer w/ copyable paint
894        //      Restore
895        // 4)
896        //      SaveLayer
897        //          DrawPicture (which has a SaveLayer/Restore pair)
898        //      Restore
899        // 5)
900        //      SaveLayer
901        //          DrawPicture with Matrix & Paint (with SaveLayer/Restore pair)
902        //      Restore
903        {
904            SkPictureRecorder recorder;
905
906            SkCanvas* c = recorder.beginRecording(SkIntToScalar(kWidth),
907                                                  SkIntToScalar(kHeight));
908            // 1)
909            c->saveLayer(NULL, NULL); // layer #0
910            c->restore();
911
912            // 2)
913            c->saveLayer(NULL, NULL); // layer #1
914                c->translate(kWidth/2.0f, kHeight/2.0f);
915                SkRect r = SkRect::MakeXYWH(0, 0, kWidth/2, kHeight/2);
916                c->saveLayer(&r, NULL); // layer #2
917                c->restore();
918            c->restore();
919
920            // 3)
921            {
922                SkPaint p;
923                p.setColor(SK_ColorRED);
924                c->saveLayer(NULL, &p); // layer #3
925                c->restore();
926            }
927
928            SkPaint layerPaint;
929            layerPaint.setColor(SK_ColorRED);  // Non-alpha only to avoid SaveLayerDrawRestoreNooper
930            // 4)
931            {
932                c->saveLayer(NULL, &layerPaint);  // layer #4
933                    c->drawPicture(child);  // layer #5 inside picture
934                c->restore();
935            }
936            // 5
937            {
938                SkPaint picturePaint;
939                SkMatrix trans;
940                trans.setTranslate(10, 10);
941
942                c->saveLayer(NULL, &layerPaint);  // layer #6
943                    c->drawPicture(child, &trans, &picturePaint); // layer #7 inside picture
944                c->restore();
945            }
946
947            pict.reset(recorder.endRecording());
948        }
949
950        // Now test out the SaveLayer extraction
951        {
952            SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
953
954            SkAutoTUnref<SkSurface> surface(SkSurface::NewScratchRenderTarget(context, info));
955
956            SkCanvas* canvas = surface->getCanvas();
957
958            canvas->EXPERIMENTAL_optimize(pict);
959
960            SkPicture::AccelData::Key key = GrAccelData::ComputeAccelDataKey();
961
962            const SkPicture::AccelData* data = pict->EXPERIMENTAL_getAccelData(key);
963            REPORTER_ASSERT(reporter, data);
964
965            const GrAccelData *gpuData = static_cast<const GrAccelData*>(data);
966            REPORTER_ASSERT(reporter, 8 == gpuData->numSaveLayers());
967
968            const GrAccelData::SaveLayerInfo& info0 = gpuData->saveLayerInfo(0);
969            // The parent/child layers appear in reverse order
970            const GrAccelData::SaveLayerInfo& info1 = gpuData->saveLayerInfo(2);
971            const GrAccelData::SaveLayerInfo& info2 = gpuData->saveLayerInfo(1);
972
973            const GrAccelData::SaveLayerInfo& info3 = gpuData->saveLayerInfo(3);
974
975            // The parent/child layers appear in reverse order
976            const GrAccelData::SaveLayerInfo& info4 = gpuData->saveLayerInfo(5);
977            const GrAccelData::SaveLayerInfo& info5 = gpuData->saveLayerInfo(4);
978
979            // The parent/child layers appear in reverse order
980            const GrAccelData::SaveLayerInfo& info6 = gpuData->saveLayerInfo(7);
981            const GrAccelData::SaveLayerInfo& info7 = gpuData->saveLayerInfo(6);
982
983            REPORTER_ASSERT(reporter, NULL == info0.fPicture);
984            REPORTER_ASSERT(reporter, kWidth == info0.fBounds.width() &&
985                                      kHeight == info0.fBounds.height());
986            REPORTER_ASSERT(reporter, info0.fLocalMat.isIdentity());
987            REPORTER_ASSERT(reporter, info0.fPreMat.isIdentity());
988            REPORTER_ASSERT(reporter, 0 == info0.fBounds.fLeft && 0 == info0.fBounds.fTop);
989            REPORTER_ASSERT(reporter, NULL == info0.fPaint);
990            REPORTER_ASSERT(reporter, !info0.fIsNested && !info0.fHasNestedLayers);
991
992            REPORTER_ASSERT(reporter, NULL == info1.fPicture);
993            REPORTER_ASSERT(reporter, kWidth == info1.fBounds.width() &&
994                                      kHeight == info1.fBounds.height());
995            REPORTER_ASSERT(reporter, info1.fLocalMat.isIdentity());
996            REPORTER_ASSERT(reporter, info1.fPreMat.isIdentity());
997            REPORTER_ASSERT(reporter, 0 == info1.fBounds.fLeft && 0 == info1.fBounds.fTop);
998            REPORTER_ASSERT(reporter, NULL == info1.fPaint);
999            REPORTER_ASSERT(reporter, !info1.fIsNested &&
1000                                      info1.fHasNestedLayers); // has a nested SL
1001
1002            REPORTER_ASSERT(reporter, NULL == info2.fPicture);
1003            REPORTER_ASSERT(reporter, kWidth / 2 == info2.fBounds.width() &&
1004                                      kHeight / 2 == info2.fBounds.height()); // bound reduces size
1005            REPORTER_ASSERT(reporter, !info2.fLocalMat.isIdentity());
1006            REPORTER_ASSERT(reporter, info2.fPreMat.isIdentity());
1007            REPORTER_ASSERT(reporter, kWidth / 2 == info2.fBounds.fLeft &&   // translated
1008                                      kHeight / 2 == info2.fBounds.fTop);
1009            REPORTER_ASSERT(reporter, NULL == info1.fPaint);
1010            REPORTER_ASSERT(reporter, info2.fIsNested && !info2.fHasNestedLayers); // is nested
1011
1012            REPORTER_ASSERT(reporter, NULL == info3.fPicture);
1013            REPORTER_ASSERT(reporter, kWidth == info3.fBounds.width() &&
1014                                      kHeight == info3.fBounds.height());
1015            REPORTER_ASSERT(reporter, info3.fLocalMat.isIdentity());
1016            REPORTER_ASSERT(reporter, info3.fPreMat.isIdentity());
1017            REPORTER_ASSERT(reporter, 0 == info3.fBounds.fLeft && 0 == info3.fBounds.fTop);
1018            REPORTER_ASSERT(reporter, info3.fPaint);
1019            REPORTER_ASSERT(reporter, !info3.fIsNested && !info3.fHasNestedLayers);
1020
1021            REPORTER_ASSERT(reporter, NULL == info4.fPicture);
1022            REPORTER_ASSERT(reporter, kWidth == info4.fBounds.width() &&
1023                                      kHeight == info4.fBounds.height());
1024            REPORTER_ASSERT(reporter, 0 == info4.fBounds.fLeft && 0 == info4.fBounds.fTop);
1025            REPORTER_ASSERT(reporter, info4.fLocalMat.isIdentity());
1026            REPORTER_ASSERT(reporter, info4.fPreMat.isIdentity());
1027            REPORTER_ASSERT(reporter, info4.fPaint);
1028            REPORTER_ASSERT(reporter, !info4.fIsNested &&
1029                                      info4.fHasNestedLayers); // has a nested SL
1030
1031            REPORTER_ASSERT(reporter, child == info5.fPicture); // in a child picture
1032            REPORTER_ASSERT(reporter, kWidth == info5.fBounds.width() &&
1033                                      kHeight == info5.fBounds.height());
1034            REPORTER_ASSERT(reporter, 0 == info5.fBounds.fLeft && 0 == info5.fBounds.fTop);
1035            REPORTER_ASSERT(reporter, info5.fLocalMat.isIdentity());
1036            REPORTER_ASSERT(reporter, info5.fPreMat.isIdentity());
1037            REPORTER_ASSERT(reporter, NULL == info5.fPaint);
1038            REPORTER_ASSERT(reporter, info5.fIsNested && !info5.fHasNestedLayers); // is nested
1039
1040            REPORTER_ASSERT(reporter, NULL == info6.fPicture);
1041            REPORTER_ASSERT(reporter, kWidth == info6.fBounds.width() &&
1042                                      kHeight == info6.fBounds.height());
1043            REPORTER_ASSERT(reporter, 0 == info6.fBounds.fLeft && 0 == info6.fBounds.fTop);
1044            REPORTER_ASSERT(reporter, info6.fLocalMat.isIdentity());
1045            REPORTER_ASSERT(reporter, info6.fPreMat.isIdentity());
1046            REPORTER_ASSERT(reporter, info6.fPaint);
1047            REPORTER_ASSERT(reporter, !info6.fIsNested &&
1048                                      info6.fHasNestedLayers); // has a nested SL
1049
1050            REPORTER_ASSERT(reporter, child == info7.fPicture); // in a child picture
1051            REPORTER_ASSERT(reporter, kWidth == info7.fBounds.width() &&
1052                                      kHeight == info7.fBounds.height());
1053            REPORTER_ASSERT(reporter, 0 == info7.fBounds.fLeft && 0 == info7.fBounds.fTop);
1054            REPORTER_ASSERT(reporter, info7.fLocalMat.isIdentity());
1055            REPORTER_ASSERT(reporter, info7.fPreMat.isIdentity());
1056            REPORTER_ASSERT(reporter, NULL == info7.fPaint);
1057            REPORTER_ASSERT(reporter, info7.fIsNested && !info7.fHasNestedLayers); // is nested
1058        }
1059    }
1060}
1061
1062#endif
1063
1064static void test_has_text(skiatest::Reporter* reporter) {
1065    SkPictureRecorder recorder;
1066
1067    SkCanvas* canvas = recorder.beginRecording(100,100);
1068    {
1069        canvas->drawRect(SkRect::MakeWH(20, 20), SkPaint());
1070    }
1071    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1072    REPORTER_ASSERT(reporter, !picture->hasText());
1073
1074    SkPoint point = SkPoint::Make(10, 10);
1075    canvas = recorder.beginRecording(100,100);
1076    {
1077        canvas->drawText("Q", 1, point.fX, point.fY, SkPaint());
1078    }
1079    picture.reset(recorder.endRecording());
1080    REPORTER_ASSERT(reporter, picture->hasText());
1081
1082    canvas = recorder.beginRecording(100,100);
1083    {
1084        canvas->drawPosText("Q", 1, &point, SkPaint());
1085    }
1086    picture.reset(recorder.endRecording());
1087    REPORTER_ASSERT(reporter, picture->hasText());
1088
1089    canvas = recorder.beginRecording(100,100);
1090    {
1091        canvas->drawPosTextH("Q", 1, &point.fX, point.fY, SkPaint());
1092    }
1093    picture.reset(recorder.endRecording());
1094    REPORTER_ASSERT(reporter, picture->hasText());
1095
1096    canvas = recorder.beginRecording(100,100);
1097    {
1098        SkPath path;
1099        path.moveTo(0, 0);
1100        path.lineTo(50, 50);
1101
1102        canvas->drawTextOnPathHV("Q", 1, path, point.fX, point.fY, SkPaint());
1103    }
1104    picture.reset(recorder.endRecording());
1105    REPORTER_ASSERT(reporter, picture->hasText());
1106
1107    canvas = recorder.beginRecording(100,100);
1108    {
1109        SkPath path;
1110        path.moveTo(0, 0);
1111        path.lineTo(50, 50);
1112
1113        canvas->drawTextOnPath("Q", 1, path, NULL, SkPaint());
1114    }
1115    picture.reset(recorder.endRecording());
1116    REPORTER_ASSERT(reporter, picture->hasText());
1117
1118    // Nest the previous picture inside a new one.
1119    canvas = recorder.beginRecording(100,100);
1120    {
1121        canvas->drawPicture(picture.get());
1122    }
1123    picture.reset(recorder.endRecording());
1124    REPORTER_ASSERT(reporter, picture->hasText());
1125}
1126
1127static void set_canvas_to_save_count_4(SkCanvas* canvas) {
1128    canvas->restoreToCount(1);
1129    canvas->save();
1130    canvas->save();
1131    canvas->save();
1132}
1133
1134/**
1135 * A canvas that records the number of saves, saveLayers and restores.
1136 */
1137class SaveCountingCanvas : public SkCanvas {
1138public:
1139    SaveCountingCanvas(int width, int height)
1140        : INHERITED(width, height)
1141        , fSaveCount(0)
1142        , fSaveLayerCount(0)
1143        , fRestoreCount(0){
1144    }
1145
1146    virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint,
1147                                            SaveFlags flags) SK_OVERRIDE {
1148        ++fSaveLayerCount;
1149        return this->INHERITED::willSaveLayer(bounds, paint, flags);
1150    }
1151
1152    virtual void willSave() SK_OVERRIDE {
1153        ++fSaveCount;
1154        this->INHERITED::willSave();
1155    }
1156
1157    virtual void willRestore() SK_OVERRIDE {
1158        ++fRestoreCount;
1159        this->INHERITED::willRestore();
1160    }
1161
1162    unsigned int getSaveCount() const { return fSaveCount; }
1163    unsigned int getSaveLayerCount() const { return fSaveLayerCount; }
1164    unsigned int getRestoreCount() const { return fRestoreCount; }
1165
1166private:
1167    unsigned int fSaveCount;
1168    unsigned int fSaveLayerCount;
1169    unsigned int fRestoreCount;
1170
1171    typedef SkCanvas INHERITED;
1172};
1173
1174void check_save_state(skiatest::Reporter* reporter, SkPicture* picture,
1175                      unsigned int numSaves, unsigned int numSaveLayers,
1176                      unsigned int numRestores) {
1177    SaveCountingCanvas canvas(SkScalarCeilToInt(picture->cullRect().width()),
1178                              SkScalarCeilToInt(picture->cullRect().height()));
1179
1180    picture->playback(&canvas);
1181
1182    // Optimizations may have removed these,
1183    // so expect to have seen no more than num{Saves,SaveLayers,Restores}.
1184    REPORTER_ASSERT(reporter, numSaves >= canvas.getSaveCount());
1185    REPORTER_ASSERT(reporter, numSaveLayers >= canvas.getSaveLayerCount());
1186    REPORTER_ASSERT(reporter, numRestores >= canvas.getRestoreCount());
1187}
1188
1189// This class exists so SkPicture can friend it and give it access to
1190// the 'partialReplay' method.
1191class SkPictureRecorderReplayTester {
1192public:
1193    static SkPicture* Copy(SkPictureRecorder* recorder) {
1194        SkPictureRecorder recorder2;
1195
1196        SkCanvas* canvas = recorder2.beginRecording(10, 10);
1197
1198        recorder->partialReplay(canvas);
1199
1200        return recorder2.endRecording();
1201    }
1202};
1203
1204static void create_imbalance(SkCanvas* canvas) {
1205    SkRect clipRect = SkRect::MakeWH(2, 2);
1206    SkRect drawRect = SkRect::MakeWH(10, 10);
1207    canvas->save();
1208        canvas->clipRect(clipRect, SkRegion::kReplace_Op);
1209        canvas->translate(1.0f, 1.0f);
1210        SkPaint p;
1211        p.setColor(SK_ColorGREEN);
1212        canvas->drawRect(drawRect, p);
1213    // no restore
1214}
1215
1216// This tests that replaying a potentially unbalanced picture into a canvas
1217// doesn't affect the canvas' save count or matrix/clip state.
1218static void check_balance(skiatest::Reporter* reporter, SkPicture* picture) {
1219    SkBitmap bm;
1220    bm.allocN32Pixels(4, 3);
1221    SkCanvas canvas(bm);
1222
1223    int beforeSaveCount = canvas.getSaveCount();
1224
1225    SkMatrix beforeMatrix = canvas.getTotalMatrix();
1226
1227    SkRect beforeClip;
1228
1229    canvas.getClipBounds(&beforeClip);
1230
1231    canvas.drawPicture(picture);
1232
1233    REPORTER_ASSERT(reporter, beforeSaveCount == canvas.getSaveCount());
1234    REPORTER_ASSERT(reporter, beforeMatrix == canvas.getTotalMatrix());
1235
1236    SkRect afterClip;
1237
1238    canvas.getClipBounds(&afterClip);
1239
1240    REPORTER_ASSERT(reporter, afterClip == beforeClip);
1241}
1242
1243// Test out SkPictureRecorder::partialReplay
1244DEF_TEST(PictureRecorder_replay, reporter) {
1245    // check save/saveLayer state
1246    {
1247        SkPictureRecorder recorder;
1248
1249        SkCanvas* canvas = recorder.beginRecording(10, 10);
1250
1251        canvas->saveLayer(NULL, NULL);
1252
1253        SkAutoTUnref<SkPicture> copy(SkPictureRecorderReplayTester::Copy(&recorder));
1254
1255        // The extra save and restore comes from the Copy process.
1256        check_save_state(reporter, copy, 2, 1, 3);
1257
1258        canvas->saveLayer(NULL, NULL);
1259
1260        SkAutoTUnref<SkPicture> final(recorder.endRecording());
1261
1262        check_save_state(reporter, final, 1, 2, 3);
1263
1264        // The copy shouldn't pick up any operations added after it was made
1265        check_save_state(reporter, copy, 2, 1, 3);
1266    }
1267
1268    // (partially) check leakage of draw ops
1269    {
1270        SkPictureRecorder recorder;
1271
1272        SkCanvas* canvas = recorder.beginRecording(10, 10);
1273
1274        SkRect r = SkRect::MakeWH(5, 5);
1275        SkPaint p;
1276
1277        canvas->drawRect(r, p);
1278
1279        SkAutoTUnref<SkPicture> copy(SkPictureRecorderReplayTester::Copy(&recorder));
1280
1281        REPORTER_ASSERT(reporter, !copy->willPlayBackBitmaps());
1282
1283        SkBitmap bm;
1284        make_bm(&bm, 10, 10, SK_ColorRED, true);
1285
1286        r.offset(5.0f, 5.0f);
1287        canvas->drawBitmapRectToRect(bm, NULL, r);
1288
1289        SkAutoTUnref<SkPicture> final(recorder.endRecording());
1290        REPORTER_ASSERT(reporter, final->willPlayBackBitmaps());
1291
1292        REPORTER_ASSERT(reporter, copy->uniqueID() != final->uniqueID());
1293
1294        // The snapshot shouldn't pick up any operations added after it was made
1295        REPORTER_ASSERT(reporter, !copy->willPlayBackBitmaps());
1296    }
1297
1298    // Recreate the Android partialReplay test case
1299    {
1300        SkPictureRecorder recorder;
1301
1302        SkCanvas* canvas = recorder.beginRecording(4, 3, NULL, 0);
1303        create_imbalance(canvas);
1304
1305        int expectedSaveCount = canvas->getSaveCount();
1306
1307        SkAutoTUnref<SkPicture> copy(SkPictureRecorderReplayTester::Copy(&recorder));
1308        check_balance(reporter, copy);
1309
1310        REPORTER_ASSERT(reporter, expectedSaveCount = canvas->getSaveCount());
1311
1312        // End the recording of source to test the picture finalization
1313        // process isn't complicated by the partialReplay step
1314        SkAutoTUnref<SkPicture> final(recorder.endRecording());
1315    }
1316}
1317
1318static void test_unbalanced_save_restores(skiatest::Reporter* reporter) {
1319    SkCanvas testCanvas(100, 100);
1320    set_canvas_to_save_count_4(&testCanvas);
1321
1322    REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1323
1324    SkPaint paint;
1325    SkRect rect = SkRect::MakeLTRB(-10000000, -10000000, 10000000, 10000000);
1326
1327    SkPictureRecorder recorder;
1328
1329    {
1330        // Create picture with 2 unbalanced saves
1331        SkCanvas* canvas = recorder.beginRecording(100, 100);
1332        canvas->save();
1333        canvas->translate(10, 10);
1334        canvas->drawRect(rect, paint);
1335        canvas->save();
1336        canvas->translate(10, 10);
1337        canvas->drawRect(rect, paint);
1338        SkAutoTUnref<SkPicture> extraSavePicture(recorder.endRecording());
1339
1340        testCanvas.drawPicture(extraSavePicture);
1341        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1342    }
1343
1344    set_canvas_to_save_count_4(&testCanvas);
1345
1346    {
1347        // Create picture with 2 unbalanced restores
1348        SkCanvas* canvas = recorder.beginRecording(100, 100);
1349        canvas->save();
1350        canvas->translate(10, 10);
1351        canvas->drawRect(rect, paint);
1352        canvas->save();
1353        canvas->translate(10, 10);
1354        canvas->drawRect(rect, paint);
1355        canvas->restore();
1356        canvas->restore();
1357        canvas->restore();
1358        canvas->restore();
1359        SkAutoTUnref<SkPicture> extraRestorePicture(recorder.endRecording());
1360
1361        testCanvas.drawPicture(extraRestorePicture);
1362        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1363    }
1364
1365    set_canvas_to_save_count_4(&testCanvas);
1366
1367    {
1368        SkCanvas* canvas = recorder.beginRecording(100, 100);
1369        canvas->translate(10, 10);
1370        canvas->drawRect(rect, paint);
1371        SkAutoTUnref<SkPicture> noSavePicture(recorder.endRecording());
1372
1373        testCanvas.drawPicture(noSavePicture);
1374        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1375        REPORTER_ASSERT(reporter, testCanvas.getTotalMatrix().isIdentity());
1376    }
1377}
1378
1379static void test_peephole() {
1380    SkRandom rand;
1381
1382    SkPictureRecorder recorder;
1383
1384    for (int j = 0; j < 100; j++) {
1385        SkRandom rand2(rand); // remember the seed
1386
1387        SkCanvas* canvas = recorder.beginRecording(100, 100);
1388
1389        for (int i = 0; i < 1000; ++i) {
1390            rand_op(canvas, rand);
1391        }
1392        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1393
1394        rand = rand2;
1395    }
1396
1397    {
1398        SkCanvas* canvas = recorder.beginRecording(100, 100);
1399        SkRect rect = SkRect::MakeWH(50, 50);
1400
1401        for (int i = 0; i < 100; ++i) {
1402            canvas->save();
1403        }
1404        while (canvas->getSaveCount() > 1) {
1405            canvas->clipRect(rect);
1406            canvas->restore();
1407        }
1408        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1409    }
1410}
1411
1412#ifndef SK_DEBUG
1413// Only test this is in release mode. We deliberately crash in debug mode, since a valid caller
1414// should never do this.
1415static void test_bad_bitmap() {
1416    // This bitmap has a width and height but no pixels. As a result, attempting to record it will
1417    // fail.
1418    SkBitmap bm;
1419    bm.setInfo(SkImageInfo::MakeN32Premul(100, 100));
1420    SkPictureRecorder recorder;
1421    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100);
1422    recordingCanvas->drawBitmap(bm, 0, 0);
1423    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1424
1425    SkCanvas canvas;
1426    canvas.drawPicture(picture);
1427}
1428#endif
1429
1430static SkData* encode_bitmap_to_data(size_t*, const SkBitmap& bm) {
1431    return SkImageEncoder::EncodeData(bm, SkImageEncoder::kPNG_Type, 100);
1432}
1433
1434static SkData* serialized_picture_from_bitmap(const SkBitmap& bitmap) {
1435    SkPictureRecorder recorder;
1436    SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(bitmap.width()),
1437                                               SkIntToScalar(bitmap.height()));
1438    canvas->drawBitmap(bitmap, 0, 0);
1439    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1440
1441    SkDynamicMemoryWStream wStream;
1442    picture->serialize(&wStream, &encode_bitmap_to_data);
1443    return wStream.copyToData();
1444}
1445
1446struct ErrorContext {
1447    int fErrors;
1448    skiatest::Reporter* fReporter;
1449};
1450
1451static void assert_one_parse_error_cb(SkError error, void* context) {
1452    ErrorContext* errorContext = static_cast<ErrorContext*>(context);
1453    errorContext->fErrors++;
1454    // This test only expects one error, and that is a kParseError. If there are others,
1455    // there is some unknown problem.
1456    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, 1 == errorContext->fErrors,
1457                            "This threw more errors than expected.");
1458    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, kParseError_SkError == error,
1459                            SkGetLastErrorString());
1460}
1461
1462static void test_bitmap_with_encoded_data(skiatest::Reporter* reporter) {
1463    // Create a bitmap that will be encoded.
1464    SkBitmap original;
1465    make_bm(&original, 100, 100, SK_ColorBLUE, true);
1466    SkDynamicMemoryWStream wStream;
1467    if (!SkImageEncoder::EncodeStream(&wStream, original, SkImageEncoder::kPNG_Type, 100)) {
1468        return;
1469    }
1470    SkAutoDataUnref data(wStream.copyToData());
1471
1472    SkBitmap bm;
1473    bool installSuccess = SkInstallDiscardablePixelRef(
1474         SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options()), &bm);
1475    REPORTER_ASSERT(reporter, installSuccess);
1476
1477    // Write both bitmaps to pictures, and ensure that the resulting data streams are the same.
1478    // Flattening original will follow the old path of performing an encode, while flattening bm
1479    // will use the already encoded data.
1480    SkAutoDataUnref picture1(serialized_picture_from_bitmap(original));
1481    SkAutoDataUnref picture2(serialized_picture_from_bitmap(bm));
1482    REPORTER_ASSERT(reporter, picture1->equals(picture2));
1483    // Now test that a parse error was generated when trying to create a new SkPicture without
1484    // providing a function to decode the bitmap.
1485    ErrorContext context;
1486    context.fErrors = 0;
1487    context.fReporter = reporter;
1488    SkSetErrorCallback(assert_one_parse_error_cb, &context);
1489    SkMemoryStream pictureStream(picture1);
1490    SkClearLastError();
1491    SkAutoUnref pictureFromStream(SkPicture::CreateFromStream(&pictureStream, NULL));
1492    REPORTER_ASSERT(reporter, pictureFromStream.get() != NULL);
1493    SkClearLastError();
1494    SkSetErrorCallback(NULL, NULL);
1495}
1496
1497static void test_draw_empty(skiatest::Reporter* reporter) {
1498    SkBitmap result;
1499    make_bm(&result, 2, 2, SK_ColorBLACK, false);
1500
1501    SkCanvas canvas(result);
1502
1503    {
1504        // stock SkPicture
1505        SkPictureRecorder recorder;
1506        recorder.beginRecording(1, 1);
1507        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1508
1509        canvas.drawPicture(picture);
1510    }
1511
1512    {
1513        // tile grid
1514        SkTileGridFactory::TileGridInfo gridInfo;
1515        gridInfo.fMargin.setEmpty();
1516        gridInfo.fOffset.setZero();
1517        gridInfo.fTileInterval.set(1, 1);
1518
1519        SkTileGridFactory factory(gridInfo);
1520        SkPictureRecorder recorder;
1521        recorder.beginRecording(1, 1, &factory);
1522        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1523
1524        canvas.drawPicture(picture);
1525    }
1526
1527    {
1528        // RTree
1529        SkRTreeFactory factory;
1530        SkPictureRecorder recorder;
1531        recorder.beginRecording(1, 1, &factory);
1532        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1533
1534        canvas.drawPicture(picture);
1535    }
1536}
1537
1538static void test_clip_bound_opt(skiatest::Reporter* reporter) {
1539    // Test for crbug.com/229011
1540    SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(4), SkIntToScalar(4),
1541                                    SkIntToScalar(2), SkIntToScalar(2));
1542    SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(7), SkIntToScalar(7),
1543                                    SkIntToScalar(1), SkIntToScalar(1));
1544    SkRect rect3 = SkRect::MakeXYWH(SkIntToScalar(6), SkIntToScalar(6),
1545                                    SkIntToScalar(1), SkIntToScalar(1));
1546
1547    SkPath invPath;
1548    invPath.addOval(rect1);
1549    invPath.setFillType(SkPath::kInverseEvenOdd_FillType);
1550    SkPath path;
1551    path.addOval(rect2);
1552    SkPath path2;
1553    path2.addOval(rect3);
1554    SkIRect clipBounds;
1555    SkPictureRecorder recorder;
1556
1557    // Testing conservative-raster-clip that is enabled by PictureRecord
1558    {
1559        SkCanvas* canvas = recorder.beginRecording(10, 10);
1560        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
1561        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1562        REPORTER_ASSERT(reporter, true == nonEmpty);
1563        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1564        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1565        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1566        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1567    }
1568    {
1569        SkCanvas* canvas = recorder.beginRecording(10, 10);
1570        canvas->clipPath(path, SkRegion::kIntersect_Op);
1571        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
1572        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1573        REPORTER_ASSERT(reporter, true == nonEmpty);
1574        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1575        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1576        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1577        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1578    }
1579    {
1580        SkCanvas* canvas = recorder.beginRecording(10, 10);
1581        canvas->clipPath(path, SkRegion::kIntersect_Op);
1582        canvas->clipPath(invPath, SkRegion::kUnion_Op);
1583        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1584        REPORTER_ASSERT(reporter, true == nonEmpty);
1585        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1586        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1587        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1588        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1589    }
1590    {
1591        SkCanvas* canvas = recorder.beginRecording(10, 10);
1592        canvas->clipPath(path, SkRegion::kDifference_Op);
1593        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1594        REPORTER_ASSERT(reporter, true == nonEmpty);
1595        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1596        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1597        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1598        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1599    }
1600    {
1601        SkCanvas* canvas = recorder.beginRecording(10, 10);
1602        canvas->clipPath(path, SkRegion::kReverseDifference_Op);
1603        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1604        // True clip is actually empty in this case, but the best
1605        // determination we can make using only bounds as input is that the
1606        // clip is included in the bounds of 'path'.
1607        REPORTER_ASSERT(reporter, true == nonEmpty);
1608        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1609        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1610        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1611        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1612    }
1613    {
1614        SkCanvas* canvas = recorder.beginRecording(10, 10);
1615        canvas->clipPath(path, SkRegion::kIntersect_Op);
1616        canvas->clipPath(path2, SkRegion::kXOR_Op);
1617        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1618        REPORTER_ASSERT(reporter, true == nonEmpty);
1619        REPORTER_ASSERT(reporter, 6 == clipBounds.fLeft);
1620        REPORTER_ASSERT(reporter, 6 == clipBounds.fTop);
1621        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1622        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1623    }
1624}
1625
1626/**
1627 * A canvas that records the number of clip commands.
1628 */
1629class ClipCountingCanvas : public SkCanvas {
1630public:
1631    ClipCountingCanvas(int width, int height)
1632        : INHERITED(width, height)
1633        , fClipCount(0){
1634    }
1635
1636    virtual void onClipRect(const SkRect& r,
1637                            SkRegion::Op op,
1638                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1639        fClipCount += 1;
1640        this->INHERITED::onClipRect(r, op, edgeStyle);
1641    }
1642
1643    virtual void onClipRRect(const SkRRect& rrect,
1644                             SkRegion::Op op,
1645                             ClipEdgeStyle edgeStyle)SK_OVERRIDE {
1646        fClipCount += 1;
1647        this->INHERITED::onClipRRect(rrect, op, edgeStyle);
1648    }
1649
1650    virtual void onClipPath(const SkPath& path,
1651                            SkRegion::Op op,
1652                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1653        fClipCount += 1;
1654        this->INHERITED::onClipPath(path, op, edgeStyle);
1655    }
1656
1657    virtual void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) SK_OVERRIDE {
1658        fClipCount += 1;
1659        this->INHERITED::onClipRegion(deviceRgn, op);
1660    }
1661
1662    unsigned getClipCount() const { return fClipCount; }
1663
1664private:
1665    unsigned fClipCount;
1666
1667    typedef SkCanvas INHERITED;
1668};
1669
1670static void test_clip_expansion(skiatest::Reporter* reporter) {
1671    SkPictureRecorder recorder;
1672    SkCanvas* canvas = recorder.beginRecording(10, 10);
1673
1674    canvas->clipRect(SkRect::MakeEmpty(), SkRegion::kReplace_Op);
1675    // The following expanding clip should not be skipped.
1676    canvas->clipRect(SkRect::MakeXYWH(4, 4, 3, 3), SkRegion::kUnion_Op);
1677    // Draw something so the optimizer doesn't just fold the world.
1678    SkPaint p;
1679    p.setColor(SK_ColorBLUE);
1680    canvas->drawPaint(p);
1681    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1682
1683    ClipCountingCanvas testCanvas(10, 10);
1684    picture->playback(&testCanvas);
1685
1686    // Both clips should be present on playback.
1687    REPORTER_ASSERT(reporter, testCanvas.getClipCount() == 2);
1688}
1689
1690static void test_hierarchical(skiatest::Reporter* reporter) {
1691    SkBitmap bm;
1692    make_bm(&bm, 10, 10, SK_ColorRED, true);
1693
1694    SkPictureRecorder recorder;
1695
1696    recorder.beginRecording(10, 10);
1697    SkAutoTUnref<SkPicture> childPlain(recorder.endRecording());
1698    REPORTER_ASSERT(reporter, !childPlain->willPlayBackBitmaps()); // 0
1699
1700    recorder.beginRecording(10, 10)->drawBitmap(bm, 0, 0);
1701    SkAutoTUnref<SkPicture> childWithBitmap(recorder.endRecording());
1702    REPORTER_ASSERT(reporter, childWithBitmap->willPlayBackBitmaps()); // 1
1703
1704    {
1705        SkCanvas* canvas = recorder.beginRecording(10, 10);
1706        canvas->drawPicture(childPlain);
1707        SkAutoTUnref<SkPicture> parentPP(recorder.endRecording());
1708        REPORTER_ASSERT(reporter, !parentPP->willPlayBackBitmaps()); // 0
1709    }
1710    {
1711        SkCanvas* canvas = recorder.beginRecording(10, 10);
1712        canvas->drawPicture(childWithBitmap);
1713        SkAutoTUnref<SkPicture> parentPWB(recorder.endRecording());
1714        REPORTER_ASSERT(reporter, parentPWB->willPlayBackBitmaps()); // 1
1715    }
1716    {
1717        SkCanvas* canvas = recorder.beginRecording(10, 10);
1718        canvas->drawBitmap(bm, 0, 0);
1719        canvas->drawPicture(childPlain);
1720        SkAutoTUnref<SkPicture> parentWBP(recorder.endRecording());
1721        REPORTER_ASSERT(reporter, parentWBP->willPlayBackBitmaps()); // 1
1722    }
1723    {
1724        SkCanvas* canvas = recorder.beginRecording(10, 10);
1725        canvas->drawBitmap(bm, 0, 0);
1726        canvas->drawPicture(childWithBitmap);
1727        SkAutoTUnref<SkPicture> parentWBWB(recorder.endRecording());
1728        REPORTER_ASSERT(reporter, parentWBWB->willPlayBackBitmaps()); // 2
1729    }
1730}
1731
1732static void test_gen_id(skiatest::Reporter* reporter) {
1733
1734    SkPictureRecorder recorder;
1735    recorder.beginRecording(0, 0);
1736    SkAutoTUnref<SkPicture> empty(recorder.endRecording());
1737
1738    // Empty pictures should still have a valid ID
1739    REPORTER_ASSERT(reporter, empty->uniqueID() != SK_InvalidGenID);
1740
1741    SkCanvas* canvas = recorder.beginRecording(1, 1);
1742    canvas->drawARGB(255, 255, 255, 255);
1743    SkAutoTUnref<SkPicture> hasData(recorder.endRecording());
1744    // picture should have a non-zero id after recording
1745    REPORTER_ASSERT(reporter, hasData->uniqueID() != SK_InvalidGenID);
1746
1747    // both pictures should have different ids
1748    REPORTER_ASSERT(reporter, hasData->uniqueID() != empty->uniqueID());
1749}
1750
1751DEF_TEST(Picture, reporter) {
1752#ifdef SK_DEBUG
1753    test_deleting_empty_picture();
1754    test_serializing_empty_picture();
1755#else
1756    test_bad_bitmap();
1757#endif
1758    test_unbalanced_save_restores(reporter);
1759    test_peephole();
1760#if SK_SUPPORT_GPU
1761    test_gpu_veto(reporter);
1762#endif
1763    test_has_text(reporter);
1764    test_analysis(reporter);
1765    test_gatherpixelrefs(reporter);
1766    test_gatherpixelrefsandrects(reporter);
1767    test_bitmap_with_encoded_data(reporter);
1768    test_draw_empty(reporter);
1769    test_clip_bound_opt(reporter);
1770    test_clip_expansion(reporter);
1771    test_hierarchical(reporter);
1772    test_gen_id(reporter);
1773}
1774
1775#if SK_SUPPORT_GPU
1776DEF_GPUTEST(GPUPicture, reporter, factory) {
1777    test_gpu_picture_optimization(reporter, factory);
1778}
1779#endif
1780
1781static void draw_bitmaps(const SkBitmap bitmap, SkCanvas* canvas) {
1782    const SkPaint paint;
1783    const SkRect rect = { 5.0f, 5.0f, 8.0f, 8.0f };
1784    const SkIRect irect =  { 2, 2, 3, 3 };
1785
1786    // Don't care what these record, as long as they're legal.
1787    canvas->drawBitmap(bitmap, 0.0f, 0.0f, &paint);
1788    canvas->drawBitmapRectToRect(bitmap, &rect, rect, &paint, SkCanvas::kNone_DrawBitmapRectFlag);
1789    canvas->drawBitmapMatrix(bitmap, SkMatrix::I(), &paint);
1790    canvas->drawBitmapNine(bitmap, irect, rect, &paint);
1791    canvas->drawSprite(bitmap, 1, 1);
1792}
1793
1794static void test_draw_bitmaps(SkCanvas* canvas) {
1795    SkBitmap empty;
1796    draw_bitmaps(empty, canvas);
1797    empty.setInfo(SkImageInfo::MakeN32Premul(10, 10));
1798    draw_bitmaps(empty, canvas);
1799}
1800
1801DEF_TEST(Picture_EmptyBitmap, r) {
1802    SkPictureRecorder recorder;
1803    test_draw_bitmaps(recorder.beginRecording(10, 10));
1804    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1805}
1806
1807DEF_TEST(Canvas_EmptyBitmap, r) {
1808    SkBitmap dst;
1809    dst.allocN32Pixels(10, 10);
1810    SkCanvas canvas(dst);
1811
1812    test_draw_bitmaps(&canvas);
1813}
1814
1815DEF_TEST(DontOptimizeSaveLayerDrawDrawRestore, reporter) {
1816    // This test is from crbug.com/344987.
1817    // The commands are:
1818    //   saveLayer with paint that modifies alpha
1819    //     drawBitmapRectToRect
1820    //     drawBitmapRectToRect
1821    //   restore
1822    // The bug was that this structure was modified so that:
1823    //  - The saveLayer and restore were eliminated
1824    //  - The alpha was only applied to the first drawBitmapRectToRect
1825
1826    // This test draws blue and red squares inside a 50% transparent
1827    // layer.  Both colours should show up muted.
1828    // When the bug is present, the red square (the second bitmap)
1829    // shows upwith full opacity.
1830
1831    SkBitmap blueBM;
1832    make_bm(&blueBM, 100, 100, SkColorSetARGB(255, 0, 0, 255), true);
1833    SkBitmap redBM;
1834    make_bm(&redBM, 100, 100, SkColorSetARGB(255, 255, 0, 0), true);
1835    SkPaint semiTransparent;
1836    semiTransparent.setAlpha(0x80);
1837
1838    SkPictureRecorder recorder;
1839    SkCanvas* canvas = recorder.beginRecording(100, 100);
1840    canvas->drawARGB(0, 0, 0, 0);
1841
1842    canvas->saveLayer(0, &semiTransparent);
1843    canvas->drawBitmap(blueBM, 25, 25);
1844    canvas->drawBitmap(redBM, 50, 50);
1845    canvas->restore();
1846
1847    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1848
1849    // Now replay the picture back on another canvas
1850    // and check a couple of its pixels.
1851    SkBitmap replayBM;
1852    make_bm(&replayBM, 100, 100, SK_ColorBLACK, false);
1853    SkCanvas replayCanvas(replayBM);
1854    picture->playback(&replayCanvas);
1855    replayCanvas.flush();
1856
1857    // With the bug present, at (55, 55) we would get a fully opaque red
1858    // intead of a dark red.
1859    REPORTER_ASSERT(reporter, replayBM.getColor(30, 30) == 0xff000080);
1860    REPORTER_ASSERT(reporter, replayBM.getColor(55, 55) == 0xff800000);
1861}
1862
1863struct CountingBBH : public SkBBoxHierarchy {
1864    mutable int searchCalls;
1865
1866    CountingBBH() : searchCalls(0) {}
1867
1868    virtual void search(const SkRect& query, SkTDArray<unsigned>* results) const SK_OVERRIDE {
1869        this->searchCalls++;
1870    }
1871
1872    virtual void insert(unsigned opIndex, const SkRect& bounds, bool defer) SK_OVERRIDE {}
1873};
1874
1875class SpoonFedBBHFactory : public SkBBHFactory {
1876public:
1877    explicit SpoonFedBBHFactory(SkBBoxHierarchy* bbh) : fBBH(bbh) {}
1878    virtual SkBBoxHierarchy* operator()(int width, int height) const {
1879        return SkRef(fBBH);
1880    }
1881private:
1882    SkBBoxHierarchy* fBBH;
1883};
1884
1885// When the canvas clip covers the full picture, we don't need to call the BBH.
1886DEF_TEST(Picture_SkipBBH, r) {
1887    CountingBBH bbh;
1888    SpoonFedBBHFactory factory(&bbh);
1889
1890    SkPictureRecorder recorder;
1891    recorder.beginRecording(320, 240, &factory);
1892    SkAutoTUnref<const SkPicture> picture(recorder.endRecording());
1893
1894    SkCanvas big(640, 480), small(300, 200);
1895
1896    picture->playback(&big);
1897    REPORTER_ASSERT(r, bbh.searchCalls == 0);
1898
1899    picture->playback(&small);
1900    REPORTER_ASSERT(r, bbh.searchCalls == 1);
1901}
1902
1903DEF_TEST(Picture_BitmapLeak, r) {
1904    SkBitmap mut, immut;
1905    mut.allocN32Pixels(300, 200);
1906    immut.allocN32Pixels(300, 200);
1907    immut.setImmutable();
1908    SkASSERT(!mut.isImmutable());
1909    SkASSERT(immut.isImmutable());
1910
1911    // No one can hold a ref on our pixels yet.
1912    REPORTER_ASSERT(r, mut.pixelRef()->unique());
1913    REPORTER_ASSERT(r, immut.pixelRef()->unique());
1914
1915    SkPictureRecorder rec;
1916    SkCanvas* canvas = rec.beginRecording(1920, 1200);
1917        canvas->drawBitmap(mut, 0, 0);
1918        canvas->drawBitmap(immut, 800, 600);
1919    SkAutoTDelete<const SkPicture> pic(rec.endRecording());
1920
1921    // The picture shares the immutable pixels but copies the mutable ones.
1922    REPORTER_ASSERT(r, mut.pixelRef()->unique());
1923    REPORTER_ASSERT(r, !immut.pixelRef()->unique());
1924
1925    // When the picture goes away, it's just our bitmaps holding the refs.
1926    pic.reset(NULL);
1927    REPORTER_ASSERT(r, mut.pixelRef()->unique());
1928    REPORTER_ASSERT(r, immut.pixelRef()->unique());
1929}
1930