PictureTest.cpp revision cfaeec446d06058cacef068b09f58ae2c78338fa 
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 "SkBlurImageFilter.h"
9#include "SkCanvas.h"
10#include "SkColorPriv.h"
11#include "SkDashPathEffect.h"
12#include "SkData.h"
13#include "SkDecodingImageGenerator.h"
14#include "SkError.h"
15#include "SkImageEncoder.h"
16#include "SkImageGenerator.h"
17#include "SkPaint.h"
18#include "SkPicture.h"
19#include "SkPictureRecorder.h"
20#include "SkPictureUtils.h"
21#include "SkRRect.h"
22#include "SkRandom.h"
23#include "SkShader.h"
24#include "SkStream.h"
25
26#if SK_SUPPORT_GPU
27#include "SkSurface.h"
28#include "GrContextFactory.h"
29#include "GrPictureUtils.h"
30#endif
31#include "Test.h"
32
33#include "SkLumaColorFilter.h"
34#include "SkColorFilterImageFilter.h"
35
36static const int gColorScale = 30;
37static const int gColorOffset = 60;
38
39static void make_bm(SkBitmap* bm, int w, int h, SkColor color, bool immutable) {
40    bm->allocN32Pixels(w, h);
41    bm->eraseColor(color);
42    if (immutable) {
43        bm->setImmutable();
44    }
45}
46
47static void make_checkerboard(SkBitmap* bm, int w, int h, bool immutable) {
48    SkASSERT(w % 2 == 0);
49    SkASSERT(h % 2 == 0);
50    bm->allocPixels(SkImageInfo::Make(w, h, kAlpha_8_SkColorType,
51                                      kPremul_SkAlphaType));
52    SkAutoLockPixels lock(*bm);
53    for (int y = 0; y < h; y += 2) {
54        uint8_t* s = bm->getAddr8(0, y);
55        for (int x = 0; x < w; x += 2) {
56            *s++ = 0xFF;
57            *s++ = 0x00;
58        }
59        s = bm->getAddr8(0, y + 1);
60        for (int x = 0; x < w; x += 2) {
61            *s++ = 0x00;
62            *s++ = 0xFF;
63        }
64    }
65    if (immutable) {
66        bm->setImmutable();
67    }
68}
69
70static void init_paint(SkPaint* paint, const SkBitmap &bm) {
71    SkShader* shader = SkShader::CreateBitmapShader(bm,
72                                                    SkShader::kClamp_TileMode,
73                                                    SkShader::kClamp_TileMode);
74    paint->setShader(shader)->unref();
75}
76
77typedef void (*DrawBitmapProc)(SkCanvas*, const SkBitmap&,
78                               const SkBitmap&, const SkPoint&,
79                               SkTDArray<SkPixelRef*>* usedPixRefs);
80
81static void drawpaint_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    canvas->drawPaint(paint);
88    *usedPixRefs->append() = bm.pixelRef();
89}
90
91static void drawpoints_proc(SkCanvas* canvas, const SkBitmap& bm,
92                            const SkBitmap& altBM, const SkPoint& pos,
93                            SkTDArray<SkPixelRef*>* usedPixRefs) {
94    SkPaint paint;
95    init_paint(&paint, bm);
96
97    // draw a rect
98    SkPoint points[5] = {
99        { pos.fX, pos.fY },
100        { pos.fX + bm.width() - 1, pos.fY },
101        { pos.fX + bm.width() - 1, pos.fY + bm.height() - 1 },
102        { pos.fX, pos.fY + bm.height() - 1 },
103        { pos.fX, pos.fY },
104    };
105
106    canvas->drawPoints(SkCanvas::kPolygon_PointMode, 5, points, paint);
107    *usedPixRefs->append() = bm.pixelRef();
108}
109
110static void drawrect_proc(SkCanvas* canvas, const SkBitmap& bm,
111                          const SkBitmap& altBM, const SkPoint& pos,
112                          SkTDArray<SkPixelRef*>* usedPixRefs) {
113    SkPaint paint;
114    init_paint(&paint, bm);
115
116    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
117    r.offset(pos.fX, pos.fY);
118
119    canvas->drawRect(r, paint);
120    *usedPixRefs->append() = bm.pixelRef();
121}
122
123static void drawoval_proc(SkCanvas* canvas, const SkBitmap& bm,
124                          const SkBitmap& altBM, const SkPoint& pos,
125                          SkTDArray<SkPixelRef*>* usedPixRefs) {
126    SkPaint paint;
127    init_paint(&paint, bm);
128
129    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
130    r.offset(pos.fX, pos.fY);
131
132    canvas->drawOval(r, paint);
133    *usedPixRefs->append() = bm.pixelRef();
134}
135
136static void drawrrect_proc(SkCanvas* canvas, const SkBitmap& bm,
137                           const SkBitmap& altBM, const SkPoint& pos,
138                           SkTDArray<SkPixelRef*>* usedPixRefs) {
139    SkPaint paint;
140    init_paint(&paint, bm);
141
142    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
143    r.offset(pos.fX, pos.fY);
144
145    SkRRect rr;
146    rr.setRectXY(r, SkIntToScalar(bm.width())/4, SkIntToScalar(bm.height())/4);
147    canvas->drawRRect(rr, paint);
148    *usedPixRefs->append() = bm.pixelRef();
149}
150
151static void drawpath_proc(SkCanvas* canvas, const SkBitmap& bm,
152                          const SkBitmap& altBM, const SkPoint& pos,
153                          SkTDArray<SkPixelRef*>* usedPixRefs) {
154    SkPaint paint;
155    init_paint(&paint, bm);
156
157    SkPath path;
158    path.lineTo(bm.width()/2.0f, SkIntToScalar(bm.height()));
159    path.lineTo(SkIntToScalar(bm.width()), 0);
160    path.close();
161    path.offset(pos.fX, pos.fY);
162
163    canvas->drawPath(path, paint);
164    *usedPixRefs->append() = bm.pixelRef();
165}
166
167static void drawbitmap_proc(SkCanvas* canvas, const SkBitmap& bm,
168                            const SkBitmap& altBM, const SkPoint& pos,
169                            SkTDArray<SkPixelRef*>* usedPixRefs) {
170    canvas->drawBitmap(bm, pos.fX, pos.fY, NULL);
171    *usedPixRefs->append() = bm.pixelRef();
172}
173
174static void drawbitmap_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
175                                       const SkBitmap& altBM, const SkPoint& pos,
176                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
177    SkPaint paint;
178    init_paint(&paint, bm);
179
180    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
181    canvas->drawBitmap(altBM, pos.fX, pos.fY, &paint);
182    *usedPixRefs->append() = bm.pixelRef();
183    *usedPixRefs->append() = altBM.pixelRef();
184}
185
186static void drawsprite_proc(SkCanvas* canvas, const SkBitmap& bm,
187                            const SkBitmap& altBM, const SkPoint& pos,
188                            SkTDArray<SkPixelRef*>* usedPixRefs) {
189    const SkMatrix& ctm = canvas->getTotalMatrix();
190
191    SkPoint p(pos);
192    ctm.mapPoints(&p, 1);
193
194    canvas->drawSprite(bm, (int)p.fX, (int)p.fY, NULL);
195    *usedPixRefs->append() = bm.pixelRef();
196}
197
198#if 0
199// Although specifiable, this case doesn't seem to make sense (i.e., the
200// bitmap in the shader is never used).
201static void drawsprite_withshader_proc(SkCanvas* canvas, const SkBitmap& bm,
202                                       const SkBitmap& altBM, const SkPoint& pos,
203                                       SkTDArray<SkPixelRef*>* usedPixRefs) {
204    SkPaint paint;
205    init_paint(&paint, bm);
206
207    const SkMatrix& ctm = canvas->getTotalMatrix();
208
209    SkPoint p(pos);
210    ctm.mapPoints(&p, 1);
211
212    canvas->drawSprite(altBM, (int)p.fX, (int)p.fY, &paint);
213    *usedPixRefs->append() = bm.pixelRef();
214    *usedPixRefs->append() = altBM.pixelRef();
215}
216#endif
217
218static void drawbitmaprect_proc(SkCanvas* canvas, const SkBitmap& bm,
219                                const SkBitmap& altBM, const SkPoint& pos,
220                                SkTDArray<SkPixelRef*>* usedPixRefs) {
221    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
222
223    r.offset(pos.fX, pos.fY);
224    canvas->drawBitmapRectToRect(bm, NULL, r, NULL);
225    *usedPixRefs->append() = bm.pixelRef();
226}
227
228static void drawbitmaprect_withshader_proc(SkCanvas* canvas,
229                                           const SkBitmap& bm,
230                                           const SkBitmap& altBM,
231                                           const SkPoint& pos,
232                                           SkTDArray<SkPixelRef*>* usedPixRefs) {
233    SkPaint paint;
234    init_paint(&paint, bm);
235
236    SkRect r = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
237    r.offset(pos.fX, pos.fY);
238
239    // The bitmap in the paint is ignored unless we're drawing an A8 bitmap
240    canvas->drawBitmapRectToRect(altBM, NULL, r, &paint);
241    *usedPixRefs->append() = bm.pixelRef();
242    *usedPixRefs->append() = altBM.pixelRef();
243}
244
245static void drawtext_proc(SkCanvas* canvas, const SkBitmap& bm,
246                          const SkBitmap& altBM, const SkPoint& pos,
247                          SkTDArray<SkPixelRef*>* usedPixRefs) {
248    SkPaint paint;
249    init_paint(&paint, bm);
250    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
251
252    canvas->drawText("0", 1, pos.fX, pos.fY+bm.width(), paint);
253    *usedPixRefs->append() = bm.pixelRef();
254}
255
256static void drawpostext_proc(SkCanvas* canvas, const SkBitmap& bm,
257                             const SkBitmap& altBM, const SkPoint& pos,
258                             SkTDArray<SkPixelRef*>* usedPixRefs) {
259    SkPaint paint;
260    init_paint(&paint, bm);
261    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
262
263    SkPoint point = { pos.fX, pos.fY + bm.height() };
264    canvas->drawPosText("O", 1, &point, paint);
265    *usedPixRefs->append() = bm.pixelRef();
266}
267
268static void drawtextonpath_proc(SkCanvas* canvas, const SkBitmap& bm,
269                                const SkBitmap& altBM, const SkPoint& pos,
270                                SkTDArray<SkPixelRef*>* usedPixRefs) {
271    SkPaint paint;
272
273    init_paint(&paint, bm);
274    paint.setTextSize(SkIntToScalar(1.5*bm.width()));
275
276    SkPath path;
277    path.lineTo(SkIntToScalar(bm.width()), 0);
278    path.offset(pos.fX, pos.fY+bm.height());
279
280    canvas->drawTextOnPath("O", 1, path, NULL, paint);
281    *usedPixRefs->append() = bm.pixelRef();
282}
283
284static void drawverts_proc(SkCanvas* canvas, const SkBitmap& bm,
285                           const SkBitmap& altBM, const SkPoint& pos,
286                           SkTDArray<SkPixelRef*>* usedPixRefs) {
287    SkPaint paint;
288    init_paint(&paint, bm);
289
290    SkPoint verts[4] = {
291        { pos.fX, pos.fY },
292        { pos.fX + bm.width(), pos.fY },
293        { pos.fX + bm.width(), pos.fY + bm.height() },
294        { pos.fX, pos.fY + bm.height() }
295    };
296    SkPoint texs[4] = { { 0, 0 },
297                        { SkIntToScalar(bm.width()), 0 },
298                        { SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) },
299                        { 0, SkIntToScalar(bm.height()) } };
300    uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
301
302    canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 4, verts, texs, NULL, NULL,
303                         indices, 6, paint);
304    *usedPixRefs->append() = bm.pixelRef();
305}
306
307// Return a picture with the bitmaps drawn at the specified positions.
308static SkPicture* record_bitmaps(const SkBitmap bm[],
309                                 const SkPoint pos[],
310                                 SkTDArray<SkPixelRef*> analytic[],
311                                 int count,
312                                 DrawBitmapProc proc) {
313    SkPictureRecorder recorder;
314    SkCanvas* canvas = recorder.beginRecording(1000, 1000);
315    for (int i = 0; i < count; ++i) {
316        analytic[i].rewind();
317        canvas->save();
318        SkRect clipRect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY,
319                                           SkIntToScalar(bm[i].width()),
320                                           SkIntToScalar(bm[i].height()));
321        canvas->clipRect(clipRect, SkRegion::kIntersect_Op);
322        proc(canvas, bm[i], bm[count+i], pos[i], &analytic[i]);
323        canvas->restore();
324    }
325    return recorder.endRecording();
326}
327
328static void rand_rect(SkRect* rect, SkRandom& rand, SkScalar W, SkScalar H) {
329    rect->fLeft   = rand.nextRangeScalar(-W, 2*W);
330    rect->fTop    = rand.nextRangeScalar(-H, 2*H);
331    rect->fRight  = rect->fLeft + rand.nextRangeScalar(0, W);
332    rect->fBottom = rect->fTop + rand.nextRangeScalar(0, H);
333
334    // we integralize rect to make our tests more predictable, since Gather is
335    // a little sloppy.
336    SkIRect ir;
337    rect->round(&ir);
338    rect->set(ir);
339}
340
341static void draw(SkPicture* pic, int width, int height, SkBitmap* result) {
342    make_bm(result, width, height, SK_ColorBLACK, false);
343
344    SkCanvas canvas(*result);
345    canvas.drawPicture(pic);
346}
347
348template <typename T> int find_index(const T* array, T elem, int count) {
349    for (int i = 0; i < count; ++i) {
350        if (array[i] == elem) {
351            return i;
352        }
353    }
354    return -1;
355}
356
357// Return true if 'ref' is found in array[]
358static bool find(SkPixelRef const * const * array, SkPixelRef const * ref, int count) {
359    return find_index<const SkPixelRef*>(array, ref, count) >= 0;
360}
361
362// Look at each pixel that is inside 'subset', and if its color appears in
363// colors[], find the corresponding value in refs[] and append that ref into
364// array, skipping duplicates of the same value.
365// Note that gathering pixelRefs from rendered colors suffers from the problem
366// that multiple simultaneous textures (e.g., A8 for alpha and 8888 for color)
367// isn't easy to reconstruct.
368static void gather_from_image(const SkBitmap& bm, SkPixelRef* const refs[],
369                              int count, SkTDArray<SkPixelRef*>* array,
370                              const SkRect& subset) {
371    SkIRect ir;
372    subset.roundOut(&ir);
373
374    if (!ir.intersect(0, 0, bm.width()-1, bm.height()-1)) {
375        return;
376    }
377
378    // Since we only want to return unique values in array, when we scan we just
379    // set a bit for each index'd color found. In practice we only have a few
380    // distinct colors, so we just use an int's bits as our array. Hence the
381    // assert that count <= number-of-bits-in-our-int.
382    SkASSERT((unsigned)count <= 32);
383    uint32_t bitarray = 0;
384
385    SkAutoLockPixels alp(bm);
386
387    for (int y = ir.fTop; y < ir.fBottom; ++y) {
388        for (int x = ir.fLeft; x < ir.fRight; ++x) {
389            SkPMColor pmc = *bm.getAddr32(x, y);
390            // the only good case where the color is not found would be if
391            // the color is transparent, meaning no bitmap was drawn in that
392            // pixel.
393            if (pmc) {
394                uint32_t index = SkGetPackedR32(pmc);
395                SkASSERT(SkGetPackedG32(pmc) == index);
396                SkASSERT(SkGetPackedB32(pmc) == index);
397                if (0 == index) {
398                    continue;           // background color
399                }
400                SkASSERT(0 == (index - gColorOffset) % gColorScale);
401                index = (index - gColorOffset) / gColorScale;
402                SkASSERT(static_cast<int>(index) < count);
403                bitarray |= 1 << index;
404            }
405        }
406    }
407
408    for (int i = 0; i < count; ++i) {
409        if (bitarray & (1 << i)) {
410            *array->append() = refs[i];
411        }
412    }
413}
414
415static void gather_from_analytic(const SkPoint pos[], SkScalar w, SkScalar h,
416                                 const SkTDArray<SkPixelRef*> analytic[],
417                                 int count,
418                                 SkTDArray<SkPixelRef*>* result,
419                                 const SkRect& subset) {
420    for (int i = 0; i < count; ++i) {
421        SkRect rect = SkRect::MakeXYWH(pos[i].fX, pos[i].fY, w, h);
422
423        if (SkRect::Intersects(subset, rect)) {
424            result->append(analytic[i].count(), analytic[i].begin());
425        }
426    }
427}
428
429
430static const struct {
431    const DrawBitmapProc proc;
432    const char* const desc;
433} gProcs[] = {
434    {drawpaint_proc, "drawpaint"},
435    {drawpoints_proc, "drawpoints"},
436    {drawrect_proc, "drawrect"},
437    {drawoval_proc, "drawoval"},
438    {drawrrect_proc, "drawrrect"},
439    {drawpath_proc, "drawpath"},
440    {drawbitmap_proc, "drawbitmap"},
441    {drawbitmap_withshader_proc, "drawbitmap_withshader"},
442    {drawsprite_proc, "drawsprite"},
443#if 0
444    {drawsprite_withshader_proc, "drawsprite_withshader"},
445#endif
446    {drawbitmaprect_proc, "drawbitmaprect"},
447    {drawbitmaprect_withshader_proc, "drawbitmaprect_withshader"},
448    {drawtext_proc, "drawtext"},
449    {drawpostext_proc, "drawpostext"},
450    {drawtextonpath_proc, "drawtextonpath"},
451    {drawverts_proc, "drawverts"},
452};
453
454static void create_textures(SkBitmap* bm, SkPixelRef** refs, int num, int w, int h) {
455    // Our convention is that the color components contain an encoding of
456    // the index of their corresponding bitmap/pixelref. (0,0,0,0) is
457    // reserved for the background
458    for (int i = 0; i < num; ++i) {
459        make_bm(&bm[i], w, h,
460                SkColorSetARGB(0xFF,
461                               gColorScale*i+gColorOffset,
462                               gColorScale*i+gColorOffset,
463                               gColorScale*i+gColorOffset),
464                true);
465        refs[i] = bm[i].pixelRef();
466    }
467
468    // The A8 alternate bitmaps are all BW checkerboards
469    for (int i = 0; i < num; ++i) {
470        make_checkerboard(&bm[num+i], w, h, true);
471        refs[num+i] = bm[num+i].pixelRef();
472    }
473}
474
475static void test_gatherpixelrefs(skiatest::Reporter* reporter) {
476    const int IW = 32;
477    const int IH = IW;
478    const SkScalar W = SkIntToScalar(IW);
479    const SkScalar H = W;
480
481    static const int N = 4;
482    SkBitmap bm[2*N];
483    SkPixelRef* refs[2*N];
484    SkTDArray<SkPixelRef*> analytic[N];
485
486    const SkPoint pos[N] = {
487        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
488    };
489
490    create_textures(bm, refs, N, IW, IH);
491
492    SkRandom rand;
493    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
494        SkAutoTUnref<SkPicture> pic(
495            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
496
497        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
498        // quick check for a small piece of each quadrant, which should just
499        // contain 1 or 2 bitmaps.
500        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
501            SkRect r;
502            r.set(2, 2, W - 2, H - 2);
503            r.offset(pos[i].fX, pos[i].fY);
504            SkAutoDataUnref data(SkPictureUtils::GatherPixelRefs(pic, r));
505            if (!data) {
506                ERRORF(reporter, "SkPictureUtils::GatherPixelRefs returned "
507                       "NULL for %s.", gProcs[k].desc);
508                continue;
509            }
510            SkPixelRef** gatheredRefs = (SkPixelRef**)data->data();
511            int count = static_cast<int>(data->size() / sizeof(SkPixelRef*));
512            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
513            if (1 == count) {
514                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
515            } else if (2 == count) {
516                REPORTER_ASSERT(reporter,
517                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
518                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
519            }
520        }
521
522        SkBitmap image;
523        draw(pic, 2*IW, 2*IH, &image);
524
525        // Test a bunch of random (mostly) rects, and compare the gather results
526        // with a deduced list of refs by looking at the colors drawn.
527        for (int j = 0; j < 100; ++j) {
528            SkRect r;
529            rand_rect(&r, rand, 2*W, 2*H);
530
531            SkTDArray<SkPixelRef*> fromImage;
532            gather_from_image(image, refs, N, &fromImage, r);
533
534            SkTDArray<SkPixelRef*> fromAnalytic;
535            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
536
537            SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
538            size_t dataSize = data ? data->size() : 0;
539            int gatherCount = static_cast<int>(dataSize / sizeof(SkPixelRef*));
540            SkASSERT(gatherCount * sizeof(SkPixelRef*) == dataSize);
541            SkPixelRef** gatherRefs = data ? (SkPixelRef**)(data->data()) : NULL;
542            SkAutoDataUnref adu(data);
543
544            // Everything that we saw drawn should appear in the analytic list
545            // but the analytic list may contain some pixelRefs that were not
546            // seen in the image (e.g., A8 textures used as masks)
547            for (int i = 0; i < fromImage.count(); ++i) {
548                if (-1 == fromAnalytic.find(fromImage[i])) {
549                    ERRORF(reporter, "PixelRef missing %d %s",
550                           i, gProcs[k].desc);
551                }
552            }
553
554            /*
555             *  GatherPixelRefs is conservative, so it can return more bitmaps
556             *  than are strictly required. Thus our check here is only that
557             *  Gather didn't miss any that we actually needed. Even that isn't
558             *  a strict requirement on Gather, which is meant to be quick and
559             *  only mostly-correct, but at the moment this test should work.
560             */
561            for (int i = 0; i < fromAnalytic.count(); ++i) {
562                bool found = find(gatherRefs, fromAnalytic[i], gatherCount);
563                if (!found) {
564                    ERRORF(reporter, "PixelRef missing %d %s",
565                           i, gProcs[k].desc);
566                }
567#if 0
568                // enable this block of code to debug failures, as it will rerun
569                // the case that failed.
570                if (!found) {
571                    SkData* data = SkPictureUtils::GatherPixelRefs(pic, r);
572                    size_t dataSize = data ? data->size() : 0;
573                }
574#endif
575            }
576        }
577    }
578}
579
580static void test_gatherpixelrefsandrects(skiatest::Reporter* reporter) {
581    const int IW = 32;
582    const int IH = IW;
583    const SkScalar W = SkIntToScalar(IW);
584    const SkScalar H = W;
585
586    static const int N = 4;
587    SkBitmap bm[2*N];
588    SkPixelRef* refs[2*N];
589    SkTDArray<SkPixelRef*> analytic[N];
590
591    const SkPoint pos[N] = {
592        { 0, 0 }, { W, 0 }, { 0, H }, { W, H }
593    };
594
595    create_textures(bm, refs, N, IW, IH);
596
597    SkRandom rand;
598    for (size_t k = 0; k < SK_ARRAY_COUNT(gProcs); ++k) {
599        SkAutoTUnref<SkPicture> pic(
600            record_bitmaps(bm, pos, analytic, N, gProcs[k].proc));
601
602        REPORTER_ASSERT(reporter, pic->willPlayBackBitmaps() || N == 0);
603
604        SkAutoTUnref<SkPictureUtils::SkPixelRefContainer> prCont(
605                                new SkPictureUtils::SkPixelRefsAndRectsList);
606
607        SkPictureUtils::GatherPixelRefsAndRects(pic, prCont);
608
609        // quick check for a small piece of each quadrant, which should just
610        // contain 1 or 2 bitmaps.
611        for (size_t  i = 0; i < SK_ARRAY_COUNT(pos); ++i) {
612            SkRect r;
613            r.set(2, 2, W - 2, H - 2);
614            r.offset(pos[i].fX, pos[i].fY);
615
616            SkTDArray<SkPixelRef*> gatheredRefs;
617            prCont->query(r, &gatheredRefs);
618
619            int count = gatheredRefs.count();
620            REPORTER_ASSERT(reporter, 1 == count || 2 == count);
621            if (1 == count) {
622                REPORTER_ASSERT(reporter, gatheredRefs[0] == refs[i]);
623            } else if (2 == count) {
624                REPORTER_ASSERT(reporter,
625                    (gatheredRefs[0] == refs[i] && gatheredRefs[1] == refs[i+N]) ||
626                    (gatheredRefs[1] == refs[i] && gatheredRefs[0] == refs[i+N]));
627            }
628        }
629
630        SkBitmap image;
631        draw(pic, 2*IW, 2*IH, &image);
632
633        // Test a bunch of random (mostly) rects, and compare the gather results
634        // with the analytic results and the pixel refs seen in a rendering.
635        for (int j = 0; j < 100; ++j) {
636            SkRect r;
637            rand_rect(&r, rand, 2*W, 2*H);
638
639            SkTDArray<SkPixelRef*> fromImage;
640            gather_from_image(image, refs, N, &fromImage, r);
641
642            SkTDArray<SkPixelRef*> fromAnalytic;
643            gather_from_analytic(pos, W, H, analytic, N, &fromAnalytic, r);
644
645            SkTDArray<SkPixelRef*> gatheredRefs;
646            prCont->query(r, &gatheredRefs);
647
648            // Everything that we saw drawn should appear in the analytic list
649            // but the analytic list may contain some pixelRefs that were not
650            // seen in the image (e.g., A8 textures used as masks)
651            for (int i = 0; i < fromImage.count(); ++i) {
652                REPORTER_ASSERT(reporter, -1 != fromAnalytic.find(fromImage[i]));
653            }
654
655            // Everything in the analytic list should appear in the gathered
656            // list.
657            for (int i = 0; i < fromAnalytic.count(); ++i) {
658                REPORTER_ASSERT(reporter, -1 != gatheredRefs.find(fromAnalytic[i]));
659            }
660        }
661    }
662}
663
664#ifdef SK_DEBUG
665// Ensure that deleting an empty SkPicture does not assert. Asserts only fire
666// in debug mode, so only run in debug mode.
667static void test_deleting_empty_picture() {
668    SkPictureRecorder recorder;
669    // Creates an SkPictureRecord
670    recorder.beginRecording(0, 0);
671    // Turns that into an SkPicture
672    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
673    // Ceates a new SkPictureRecord
674    recorder.beginRecording(0, 0);
675}
676
677// Ensure that serializing an empty picture does not assert. Likewise only runs in debug mode.
678static void test_serializing_empty_picture() {
679    SkPictureRecorder recorder;
680    recorder.beginRecording(0, 0);
681    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
682    SkDynamicMemoryWStream stream;
683    picture->serialize(&stream);
684}
685#endif
686
687static void rand_op(SkCanvas* canvas, SkRandom& rand) {
688    SkPaint paint;
689    SkRect rect = SkRect::MakeWH(50, 50);
690
691    SkScalar unit = rand.nextUScalar1();
692    if (unit <= 0.3) {
693//        SkDebugf("save\n");
694        canvas->save();
695    } else if (unit <= 0.6) {
696//        SkDebugf("restore\n");
697        canvas->restore();
698    } else if (unit <= 0.9) {
699//        SkDebugf("clip\n");
700        canvas->clipRect(rect);
701    } else {
702//        SkDebugf("draw\n");
703        canvas->drawPaint(paint);
704    }
705}
706
707#if SK_SUPPORT_GPU
708static void test_gpu_veto(skiatest::Reporter* reporter) {
709
710    SkPictureRecorder recorder;
711
712    SkCanvas* canvas = recorder.beginRecording(100, 100);
713    {
714        SkPath path;
715        path.moveTo(0, 0);
716        path.lineTo(50, 50);
717
718        SkScalar intervals[] = { 1.0f, 1.0f };
719        SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, 0));
720
721        SkPaint paint;
722        paint.setStyle(SkPaint::kStroke_Style);
723        paint.setPathEffect(dash);
724
725        canvas->drawPath(path, paint);
726    }
727    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
728    // path effects currently render an SkPicture undesireable for GPU rendering
729
730    const char *reason = NULL;
731    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL, &reason));
732    REPORTER_ASSERT(reporter, NULL != reason);
733
734    canvas = recorder.beginRecording(100, 100);
735    {
736        SkPath path;
737
738        path.moveTo(0, 0);
739        path.lineTo(0, 50);
740        path.lineTo(25, 25);
741        path.lineTo(50, 50);
742        path.lineTo(50, 0);
743        path.close();
744        REPORTER_ASSERT(reporter, !path.isConvex());
745
746        SkPaint paint;
747        paint.setAntiAlias(true);
748        for (int i = 0; i < 50; ++i) {
749            canvas->drawPath(path, paint);
750        }
751    }
752    picture.reset(recorder.endRecording());
753    // A lot of AA concave paths currently render an SkPicture undesireable for GPU rendering
754    REPORTER_ASSERT(reporter, !picture->suitableForGpuRasterization(NULL));
755
756    canvas = recorder.beginRecording(100, 100);
757    {
758        SkPath path;
759
760        path.moveTo(0, 0);
761        path.lineTo(0, 50);
762        path.lineTo(25, 25);
763        path.lineTo(50, 50);
764        path.lineTo(50, 0);
765        path.close();
766        REPORTER_ASSERT(reporter, !path.isConvex());
767
768        SkPaint paint;
769        paint.setAntiAlias(true);
770        paint.setStyle(SkPaint::kStroke_Style);
771        paint.setStrokeWidth(0);
772        for (int i = 0; i < 50; ++i) {
773            canvas->drawPath(path, paint);
774        }
775    }
776    picture.reset(recorder.endRecording());
777    // hairline stroked AA concave paths are fine for GPU rendering
778    REPORTER_ASSERT(reporter, picture->suitableForGpuRasterization(NULL));
779}
780
781static void test_gpu_picture_optimization(skiatest::Reporter* reporter,
782                                          GrContextFactory* factory) {
783
784    GrContext* context = factory->get(GrContextFactory::kNative_GLContextType);
785
786    static const int kWidth = 100;
787    static const int kHeight = 100;
788
789    SkAutoTUnref<SkPicture> pict;
790
791    // create a picture with the structure:
792    // 1)
793    //      SaveLayer
794    //      Restore
795    // 2)
796    //      SaveLayer
797    //          Translate
798    //          SaveLayer w/ bound
799    //          Restore
800    //      Restore
801    // 3)
802    //      SaveLayer w/ copyable paint
803    //      Restore
804    // 4)
805    //      SaveLayer w/ non-copyable paint
806    //      Restore
807    {
808        SkPictureRecorder recorder;
809
810        SkCanvas* c = recorder.beginRecording(kWidth, kHeight);
811        // 1)
812        c->saveLayer(NULL, NULL);
813        c->restore();
814
815        // 2)
816        c->saveLayer(NULL, NULL);
817            c->translate(kWidth/2, kHeight/2);
818            SkRect r = SkRect::MakeXYWH(0, 0, kWidth/2, kHeight/2);
819            c->saveLayer(&r, NULL);
820            c->restore();
821        c->restore();
822
823        // 3)
824        {
825            SkPaint p;
826            p.setColor(SK_ColorRED);
827            c->saveLayer(NULL, &p);
828            c->restore();
829        }
830        // 4)
831        // TODO: this case will need to be removed once the paint's are immutable
832        {
833            SkPaint p;
834            SkAutoTUnref<SkColorFilter> cf(SkLumaColorFilter::Create());
835            p.setImageFilter(SkColorFilterImageFilter::Create(cf.get()))->unref();
836            c->saveLayer(NULL, &p);
837            c->restore();
838        }
839
840        pict.reset(recorder.endRecording());
841    }
842
843    // Now test out the SaveLayer extraction
844    {
845        SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
846
847        SkAutoTUnref<SkSurface> surface(SkSurface::NewScratchRenderTarget(context, info));
848
849        SkCanvas* canvas = surface->getCanvas();
850
851        canvas->EXPERIMENTAL_optimize(pict);
852
853        SkPicture::AccelData::Key key = GPUAccelData::ComputeAccelDataKey();
854
855        const SkPicture::AccelData* data = pict->EXPERIMENTAL_getAccelData(key);
856        REPORTER_ASSERT(reporter, NULL != data);
857
858        const GPUAccelData *gpuData = static_cast<const GPUAccelData*>(data);
859        REPORTER_ASSERT(reporter, 5 == gpuData->numSaveLayers());
860
861        const GPUAccelData::SaveLayerInfo& info0 = gpuData->saveLayerInfo(0);
862        // The parent/child layer appear in reverse order
863        const GPUAccelData::SaveLayerInfo& info1 = gpuData->saveLayerInfo(2);
864        const GPUAccelData::SaveLayerInfo& info2 = gpuData->saveLayerInfo(1);
865        const GPUAccelData::SaveLayerInfo& info3 = gpuData->saveLayerInfo(3);
866//        const GPUAccelData::SaveLayerInfo& info4 = gpuData->saveLayerInfo(4);
867
868        REPORTER_ASSERT(reporter, info0.fValid);
869        REPORTER_ASSERT(reporter, kWidth == info0.fSize.fWidth && kHeight == info0.fSize.fHeight);
870        REPORTER_ASSERT(reporter, info0.fCTM.isIdentity());
871        REPORTER_ASSERT(reporter, 0 == info0.fOffset.fX && 0 == info0.fOffset.fY);
872        REPORTER_ASSERT(reporter, NULL != info0.fPaint);
873        REPORTER_ASSERT(reporter, !info0.fIsNested && !info0.fHasNestedLayers);
874
875        REPORTER_ASSERT(reporter, info1.fValid);
876        REPORTER_ASSERT(reporter, kWidth == info1.fSize.fWidth && kHeight == info1.fSize.fHeight);
877        REPORTER_ASSERT(reporter, info1.fCTM.isIdentity());
878        REPORTER_ASSERT(reporter, 0 == info1.fOffset.fX && 0 == info1.fOffset.fY);
879        REPORTER_ASSERT(reporter, NULL != info1.fPaint);
880        REPORTER_ASSERT(reporter, !info1.fIsNested && info1.fHasNestedLayers); // has a nested SL
881
882        REPORTER_ASSERT(reporter, info2.fValid);
883        REPORTER_ASSERT(reporter, kWidth/2 == info2.fSize.fWidth &&
884                                  kHeight/2 == info2.fSize.fHeight); // bound reduces size
885        REPORTER_ASSERT(reporter, info2.fCTM.isIdentity());         // translated
886        REPORTER_ASSERT(reporter, kWidth/2 == info2.fOffset.fX &&
887                                  kHeight/2 == info2.fOffset.fY);
888        REPORTER_ASSERT(reporter, NULL != info1.fPaint);
889        REPORTER_ASSERT(reporter, info2.fIsNested && !info2.fHasNestedLayers); // is nested
890
891        REPORTER_ASSERT(reporter, info3.fValid);
892        REPORTER_ASSERT(reporter, kWidth == info3.fSize.fWidth && kHeight == info3.fSize.fHeight);
893        REPORTER_ASSERT(reporter, info3.fCTM.isIdentity());
894        REPORTER_ASSERT(reporter, 0 == info3.fOffset.fX && 0 == info3.fOffset.fY);
895        REPORTER_ASSERT(reporter, NULL != info3.fPaint);
896        REPORTER_ASSERT(reporter, !info3.fIsNested && !info3.fHasNestedLayers);
897
898#if 0 // needs more though for GrGatherCanvas
899        REPORTER_ASSERT(reporter, !info4.fValid);                 // paint is/was uncopyable
900        REPORTER_ASSERT(reporter, kWidth == info4.fSize.fWidth && kHeight == info4.fSize.fHeight);
901        REPORTER_ASSERT(reporter, 0 == info4.fOffset.fX && 0 == info4.fOffset.fY);
902        REPORTER_ASSERT(reporter, info4.fCTM.isIdentity());
903        REPORTER_ASSERT(reporter, NULL == info4.fPaint);     // paint is/was uncopyable
904        REPORTER_ASSERT(reporter, !info4.fIsNested && !info4.fHasNestedLayers);
905#endif
906    }
907}
908
909#endif
910
911static void set_canvas_to_save_count_4(SkCanvas* canvas) {
912    canvas->restoreToCount(1);
913    canvas->save();
914    canvas->save();
915    canvas->save();
916}
917
918/**
919 * A canvas that records the number of saves, saveLayers and restores.
920 */
921class SaveCountingCanvas : public SkCanvas {
922public:
923    SaveCountingCanvas(int width, int height)
924        : INHERITED(width, height)
925        , fSaveCount(0)
926        , fSaveLayerCount(0)
927        , fRestoreCount(0){
928    }
929
930    virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint,
931                                            SaveFlags flags) SK_OVERRIDE {
932        ++fSaveLayerCount;
933        return this->INHERITED::willSaveLayer(bounds, paint, flags);
934    }
935
936    virtual void willSave() SK_OVERRIDE {
937        ++fSaveCount;
938        this->INHERITED::willSave();
939    }
940
941    virtual void willRestore() SK_OVERRIDE {
942        ++fRestoreCount;
943        this->INHERITED::willRestore();
944    }
945
946    unsigned int getSaveCount() const { return fSaveCount; }
947    unsigned int getSaveLayerCount() const { return fSaveLayerCount; }
948    unsigned int getRestoreCount() const { return fRestoreCount; }
949
950private:
951    unsigned int fSaveCount;
952    unsigned int fSaveLayerCount;
953    unsigned int fRestoreCount;
954
955    typedef SkCanvas INHERITED;
956};
957
958void check_save_state(skiatest::Reporter* reporter, SkPicture* picture,
959                      unsigned int numSaves, unsigned int numSaveLayers,
960                      unsigned int numRestores) {
961    SaveCountingCanvas canvas(picture->width(), picture->height());
962
963    picture->draw(&canvas);
964
965    REPORTER_ASSERT(reporter, numSaves == canvas.getSaveCount());
966    REPORTER_ASSERT(reporter, numSaveLayers == canvas.getSaveLayerCount());
967    REPORTER_ASSERT(reporter, numRestores == canvas.getRestoreCount());
968}
969
970// This class exists so SkPicture can friend it and give it access to
971// the 'partialReplay' method.
972class SkPictureRecorderReplayTester {
973public:
974    static SkPicture* Copy(SkPictureRecorder* recorder) {
975        SkPictureRecorder recorder2;
976
977        SkCanvas* canvas = recorder2.beginRecording(10, 10);
978
979        recorder->partialReplay(canvas);
980
981        return recorder2.endRecording();
982    }
983};
984
985static void create_imbalance(SkCanvas* canvas) {
986    SkRect clipRect = SkRect::MakeWH(2, 2);
987    SkRect drawRect = SkRect::MakeWH(10, 10);
988    canvas->save();
989        canvas->clipRect(clipRect, SkRegion::kReplace_Op);
990        canvas->translate(1.0f, 1.0f);
991        SkPaint p;
992        p.setColor(SK_ColorGREEN);
993        canvas->drawRect(drawRect, p);
994    // no restore
995}
996
997// This tests that replaying a potentially unbalanced picture into a canvas
998// doesn't affect the canvas' save count or matrix/clip state.
999static void check_balance(skiatest::Reporter* reporter, SkPicture* picture) {
1000    SkBitmap bm;
1001    bm.allocN32Pixels(4, 3);
1002    SkCanvas canvas(bm);
1003
1004    int beforeSaveCount = canvas.getSaveCount();
1005
1006    SkMatrix beforeMatrix = canvas.getTotalMatrix();
1007
1008    SkRect beforeClip;
1009
1010    canvas.getClipBounds(&beforeClip);
1011
1012    canvas.drawPicture(picture);
1013
1014    REPORTER_ASSERT(reporter, beforeSaveCount == canvas.getSaveCount());
1015    REPORTER_ASSERT(reporter, beforeMatrix == canvas.getTotalMatrix());
1016
1017    SkRect afterClip;
1018
1019    canvas.getClipBounds(&afterClip);
1020
1021    REPORTER_ASSERT(reporter, afterClip == beforeClip);
1022}
1023
1024// Test out SkPictureRecorder::partialReplay
1025DEF_TEST(PictureRecorder_replay, reporter) {
1026    // check save/saveLayer state
1027    {
1028        SkPictureRecorder recorder;
1029
1030        SkCanvas* canvas = recorder.beginRecording(10, 10);
1031
1032        canvas->saveLayer(NULL, NULL);
1033
1034        SkAutoTUnref<SkPicture> copy(SkPictureRecorderReplayTester::Copy(&recorder));
1035
1036        // The extra save and restore comes from the Copy process.
1037        check_save_state(reporter, copy, 2, 1, 3);
1038
1039        canvas->saveLayer(NULL, NULL);
1040
1041        SkAutoTUnref<SkPicture> final(recorder.endRecording());
1042
1043        check_save_state(reporter, final, 1, 2, 3);
1044
1045        // The copy shouldn't pick up any operations added after it was made
1046        check_save_state(reporter, copy, 2, 1, 3);
1047    }
1048
1049    // (partially) check leakage of draw ops
1050    {
1051        SkPictureRecorder recorder;
1052
1053        SkCanvas* canvas = recorder.beginRecording(10, 10);
1054
1055        SkRect r = SkRect::MakeWH(5, 5);
1056        SkPaint p;
1057
1058        canvas->drawRect(r, p);
1059
1060        SkAutoTUnref<SkPicture> copy(SkPictureRecorderReplayTester::Copy(&recorder));
1061
1062        REPORTER_ASSERT(reporter, !copy->willPlayBackBitmaps());
1063
1064        SkBitmap bm;
1065        make_bm(&bm, 10, 10, SK_ColorRED, true);
1066
1067        r.offset(5.0f, 5.0f);
1068        canvas->drawBitmapRectToRect(bm, NULL, r);
1069
1070        SkAutoTUnref<SkPicture> final(recorder.endRecording());
1071        REPORTER_ASSERT(reporter, final->willPlayBackBitmaps());
1072
1073        REPORTER_ASSERT(reporter, copy->uniqueID() != final->uniqueID());
1074
1075        // The snapshot shouldn't pick up any operations added after it was made
1076        REPORTER_ASSERT(reporter, !copy->willPlayBackBitmaps());
1077    }
1078
1079    // Recreate the Android partialReplay test case
1080    {
1081        SkPictureRecorder recorder;
1082
1083        SkCanvas* canvas = recorder.beginRecording(4, 3, NULL, 0);
1084        create_imbalance(canvas);
1085
1086        int expectedSaveCount = canvas->getSaveCount();
1087
1088        SkAutoTUnref<SkPicture> copy(SkPictureRecorderReplayTester::Copy(&recorder));
1089        check_balance(reporter, copy);
1090
1091        REPORTER_ASSERT(reporter, expectedSaveCount = canvas->getSaveCount());
1092
1093        // End the recording of source to test the picture finalization
1094        // process isn't complicated by the partialReplay step
1095        SkAutoTUnref<SkPicture> final(recorder.endRecording());
1096    }
1097}
1098
1099static void test_unbalanced_save_restores(skiatest::Reporter* reporter) {
1100    SkCanvas testCanvas(100, 100);
1101    set_canvas_to_save_count_4(&testCanvas);
1102
1103    REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1104
1105    SkPaint paint;
1106    SkRect rect = SkRect::MakeLTRB(-10000000, -10000000, 10000000, 10000000);
1107
1108    SkPictureRecorder recorder;
1109
1110    {
1111        // Create picture with 2 unbalanced saves
1112        SkCanvas* canvas = recorder.beginRecording(100, 100);
1113        canvas->save();
1114        canvas->translate(10, 10);
1115        canvas->drawRect(rect, paint);
1116        canvas->save();
1117        canvas->translate(10, 10);
1118        canvas->drawRect(rect, paint);
1119        SkAutoTUnref<SkPicture> extraSavePicture(recorder.endRecording());
1120
1121        testCanvas.drawPicture(extraSavePicture);
1122        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1123    }
1124
1125    set_canvas_to_save_count_4(&testCanvas);
1126
1127    {
1128        // Create picture with 2 unbalanced restores
1129        SkCanvas* canvas = recorder.beginRecording(100, 100);
1130        canvas->save();
1131        canvas->translate(10, 10);
1132        canvas->drawRect(rect, paint);
1133        canvas->save();
1134        canvas->translate(10, 10);
1135        canvas->drawRect(rect, paint);
1136        canvas->restore();
1137        canvas->restore();
1138        canvas->restore();
1139        canvas->restore();
1140        SkAutoTUnref<SkPicture> extraRestorePicture(recorder.endRecording());
1141
1142        testCanvas.drawPicture(extraRestorePicture);
1143        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1144    }
1145
1146    set_canvas_to_save_count_4(&testCanvas);
1147
1148    {
1149        SkCanvas* canvas = recorder.beginRecording(100, 100);
1150        canvas->translate(10, 10);
1151        canvas->drawRect(rect, paint);
1152        SkAutoTUnref<SkPicture> noSavePicture(recorder.endRecording());
1153
1154        testCanvas.drawPicture(noSavePicture);
1155        REPORTER_ASSERT(reporter, 4 == testCanvas.getSaveCount());
1156        REPORTER_ASSERT(reporter, testCanvas.getTotalMatrix().isIdentity());
1157    }
1158}
1159
1160static void test_peephole() {
1161    SkRandom rand;
1162
1163    SkPictureRecorder recorder;
1164
1165    for (int j = 0; j < 100; j++) {
1166        SkRandom rand2(rand); // remember the seed
1167
1168        SkCanvas* canvas = recorder.beginRecording(100, 100);
1169
1170        for (int i = 0; i < 1000; ++i) {
1171            rand_op(canvas, rand);
1172        }
1173        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1174
1175        rand = rand2;
1176    }
1177
1178    {
1179        SkCanvas* canvas = recorder.beginRecording(100, 100);
1180        SkRect rect = SkRect::MakeWH(50, 50);
1181
1182        for (int i = 0; i < 100; ++i) {
1183            canvas->save();
1184        }
1185        while (canvas->getSaveCount() > 1) {
1186            canvas->clipRect(rect);
1187            canvas->restore();
1188        }
1189        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1190    }
1191}
1192
1193#ifndef SK_DEBUG
1194// Only test this is in release mode. We deliberately crash in debug mode, since a valid caller
1195// should never do this.
1196static void test_bad_bitmap() {
1197    // This bitmap has a width and height but no pixels. As a result, attempting to record it will
1198    // fail.
1199    SkBitmap bm;
1200    bm.setInfo(SkImageInfo::MakeN32Premul(100, 100));
1201    SkPictureRecorder recorder;
1202    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100);
1203    recordingCanvas->drawBitmap(bm, 0, 0);
1204    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1205
1206    SkCanvas canvas;
1207    canvas.drawPicture(picture);
1208}
1209#endif
1210
1211static SkData* encode_bitmap_to_data(size_t*, const SkBitmap& bm) {
1212    return SkImageEncoder::EncodeData(bm, SkImageEncoder::kPNG_Type, 100);
1213}
1214
1215static SkData* serialized_picture_from_bitmap(const SkBitmap& bitmap) {
1216    SkPictureRecorder recorder;
1217    SkCanvas* canvas = recorder.beginRecording(bitmap.width(), bitmap.height());
1218    canvas->drawBitmap(bitmap, 0, 0);
1219    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1220
1221    SkDynamicMemoryWStream wStream;
1222    picture->serialize(&wStream, &encode_bitmap_to_data);
1223    return wStream.copyToData();
1224}
1225
1226struct ErrorContext {
1227    int fErrors;
1228    skiatest::Reporter* fReporter;
1229};
1230
1231static void assert_one_parse_error_cb(SkError error, void* context) {
1232    ErrorContext* errorContext = static_cast<ErrorContext*>(context);
1233    errorContext->fErrors++;
1234    // This test only expects one error, and that is a kParseError. If there are others,
1235    // there is some unknown problem.
1236    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, 1 == errorContext->fErrors,
1237                            "This threw more errors than expected.");
1238    REPORTER_ASSERT_MESSAGE(errorContext->fReporter, kParseError_SkError == error,
1239                            SkGetLastErrorString());
1240}
1241
1242static void test_bitmap_with_encoded_data(skiatest::Reporter* reporter) {
1243    // Create a bitmap that will be encoded.
1244    SkBitmap original;
1245    make_bm(&original, 100, 100, SK_ColorBLUE, true);
1246    SkDynamicMemoryWStream wStream;
1247    if (!SkImageEncoder::EncodeStream(&wStream, original, SkImageEncoder::kPNG_Type, 100)) {
1248        return;
1249    }
1250    SkAutoDataUnref data(wStream.copyToData());
1251
1252    SkBitmap bm;
1253    bool installSuccess = SkInstallDiscardablePixelRef(
1254         SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options()), &bm);
1255    REPORTER_ASSERT(reporter, installSuccess);
1256
1257    // Write both bitmaps to pictures, and ensure that the resulting data streams are the same.
1258    // Flattening original will follow the old path of performing an encode, while flattening bm
1259    // will use the already encoded data.
1260    SkAutoDataUnref picture1(serialized_picture_from_bitmap(original));
1261    SkAutoDataUnref picture2(serialized_picture_from_bitmap(bm));
1262    REPORTER_ASSERT(reporter, picture1->equals(picture2));
1263    // Now test that a parse error was generated when trying to create a new SkPicture without
1264    // providing a function to decode the bitmap.
1265    ErrorContext context;
1266    context.fErrors = 0;
1267    context.fReporter = reporter;
1268    SkSetErrorCallback(assert_one_parse_error_cb, &context);
1269    SkMemoryStream pictureStream(picture1);
1270    SkClearLastError();
1271    SkAutoUnref pictureFromStream(SkPicture::CreateFromStream(&pictureStream, NULL));
1272    REPORTER_ASSERT(reporter, pictureFromStream.get() != NULL);
1273    SkClearLastError();
1274    SkSetErrorCallback(NULL, NULL);
1275}
1276
1277static void test_draw_empty(skiatest::Reporter* reporter) {
1278    SkBitmap result;
1279    make_bm(&result, 2, 2, SK_ColorBLACK, false);
1280
1281    SkCanvas canvas(result);
1282
1283    {
1284        // stock SkPicture
1285        SkPictureRecorder recorder;
1286        recorder.beginRecording(1, 1);
1287        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1288
1289        canvas.drawPicture(picture);
1290    }
1291
1292    {
1293        // tile grid
1294        SkTileGridFactory::TileGridInfo gridInfo;
1295        gridInfo.fMargin.setEmpty();
1296        gridInfo.fOffset.setZero();
1297        gridInfo.fTileInterval.set(1, 1);
1298
1299        SkTileGridFactory factory(gridInfo);
1300        SkPictureRecorder recorder;
1301        recorder.beginRecording(1, 1, &factory);
1302        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1303
1304        canvas.drawPicture(picture);
1305    }
1306
1307    {
1308        // RTree
1309        SkRTreeFactory factory;
1310        SkPictureRecorder recorder;
1311        recorder.beginRecording(1, 1, &factory);
1312        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1313
1314        canvas.drawPicture(picture);
1315    }
1316
1317    {
1318        // quad tree
1319        SkQuadTreeFactory factory;
1320        SkPictureRecorder recorder;
1321        recorder.beginRecording(1, 1, &factory);
1322        SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1323
1324        canvas.drawPicture(picture);
1325    }
1326}
1327
1328static void test_clip_bound_opt(skiatest::Reporter* reporter) {
1329    // Test for crbug.com/229011
1330    SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(4), SkIntToScalar(4),
1331                                    SkIntToScalar(2), SkIntToScalar(2));
1332    SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(7), SkIntToScalar(7),
1333                                    SkIntToScalar(1), SkIntToScalar(1));
1334    SkRect rect3 = SkRect::MakeXYWH(SkIntToScalar(6), SkIntToScalar(6),
1335                                    SkIntToScalar(1), SkIntToScalar(1));
1336
1337    SkPath invPath;
1338    invPath.addOval(rect1);
1339    invPath.setFillType(SkPath::kInverseEvenOdd_FillType);
1340    SkPath path;
1341    path.addOval(rect2);
1342    SkPath path2;
1343    path2.addOval(rect3);
1344    SkIRect clipBounds;
1345    SkPictureRecorder recorder;
1346    // Minimalist test set for 100% code coverage of
1347    // SkPictureRecord::updateClipConservativelyUsingBounds
1348    {
1349        SkCanvas* canvas = recorder.beginRecording(10, 10);
1350        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
1351        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1352        REPORTER_ASSERT(reporter, true == nonEmpty);
1353        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1354        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1355        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1356        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1357    }
1358    {
1359        SkCanvas* canvas = recorder.beginRecording(10, 10);
1360        canvas->clipPath(path, SkRegion::kIntersect_Op);
1361        canvas->clipPath(invPath, SkRegion::kIntersect_Op);
1362        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1363        REPORTER_ASSERT(reporter, true == nonEmpty);
1364        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1365        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1366        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1367        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1368    }
1369    {
1370        SkCanvas* canvas = recorder.beginRecording(10, 10);
1371        canvas->clipPath(path, SkRegion::kIntersect_Op);
1372        canvas->clipPath(invPath, SkRegion::kUnion_Op);
1373        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1374        REPORTER_ASSERT(reporter, true == nonEmpty);
1375        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1376        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1377        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1378        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1379    }
1380    {
1381        SkCanvas* canvas = recorder.beginRecording(10, 10);
1382        canvas->clipPath(path, SkRegion::kDifference_Op);
1383        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1384        REPORTER_ASSERT(reporter, true == nonEmpty);
1385        REPORTER_ASSERT(reporter, 0 == clipBounds.fLeft);
1386        REPORTER_ASSERT(reporter, 0 == clipBounds.fTop);
1387        REPORTER_ASSERT(reporter, 10 == clipBounds.fBottom);
1388        REPORTER_ASSERT(reporter, 10 == clipBounds.fRight);
1389    }
1390    {
1391        SkCanvas* canvas = recorder.beginRecording(10, 10);
1392        canvas->clipPath(path, SkRegion::kReverseDifference_Op);
1393        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1394        // True clip is actually empty in this case, but the best
1395        // determination we can make using only bounds as input is that the
1396        // clip is included in the bounds of 'path'.
1397        REPORTER_ASSERT(reporter, true == nonEmpty);
1398        REPORTER_ASSERT(reporter, 7 == clipBounds.fLeft);
1399        REPORTER_ASSERT(reporter, 7 == clipBounds.fTop);
1400        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1401        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1402    }
1403    {
1404        SkCanvas* canvas = recorder.beginRecording(10, 10);
1405        canvas->clipPath(path, SkRegion::kIntersect_Op);
1406        canvas->clipPath(path2, SkRegion::kXOR_Op);
1407        bool nonEmpty = canvas->getClipDeviceBounds(&clipBounds);
1408        REPORTER_ASSERT(reporter, true == nonEmpty);
1409        REPORTER_ASSERT(reporter, 6 == clipBounds.fLeft);
1410        REPORTER_ASSERT(reporter, 6 == clipBounds.fTop);
1411        REPORTER_ASSERT(reporter, 8 == clipBounds.fBottom);
1412        REPORTER_ASSERT(reporter, 8 == clipBounds.fRight);
1413    }
1414}
1415
1416/**
1417 * A canvas that records the number of clip commands.
1418 */
1419class ClipCountingCanvas : public SkCanvas {
1420public:
1421    ClipCountingCanvas(int width, int height)
1422        : INHERITED(width, height)
1423        , fClipCount(0){
1424    }
1425
1426    virtual void onClipRect(const SkRect& r,
1427                            SkRegion::Op op,
1428                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1429        fClipCount += 1;
1430        this->INHERITED::onClipRect(r, op, edgeStyle);
1431    }
1432
1433    virtual void onClipRRect(const SkRRect& rrect,
1434                             SkRegion::Op op,
1435                             ClipEdgeStyle edgeStyle)SK_OVERRIDE {
1436        fClipCount += 1;
1437        this->INHERITED::onClipRRect(rrect, op, edgeStyle);
1438    }
1439
1440    virtual void onClipPath(const SkPath& path,
1441                            SkRegion::Op op,
1442                            ClipEdgeStyle edgeStyle) SK_OVERRIDE {
1443        fClipCount += 1;
1444        this->INHERITED::onClipPath(path, op, edgeStyle);
1445    }
1446
1447    virtual void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) SK_OVERRIDE {
1448        fClipCount += 1;
1449        this->INHERITED::onClipRegion(deviceRgn, op);
1450    }
1451
1452    unsigned getClipCount() const { return fClipCount; }
1453
1454private:
1455    unsigned fClipCount;
1456
1457    typedef SkCanvas INHERITED;
1458};
1459
1460static void test_clip_expansion(skiatest::Reporter* reporter) {
1461    SkPictureRecorder recorder;
1462    SkCanvas* canvas = recorder.beginRecording(10, 10);
1463
1464    canvas->clipRect(SkRect::MakeEmpty(), SkRegion::kReplace_Op);
1465    // The following expanding clip should not be skipped.
1466    canvas->clipRect(SkRect::MakeXYWH(4, 4, 3, 3), SkRegion::kUnion_Op);
1467    // Draw something so the optimizer doesn't just fold the world.
1468    SkPaint p;
1469    p.setColor(SK_ColorBLUE);
1470    canvas->drawPaint(p);
1471    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1472
1473    ClipCountingCanvas testCanvas(10, 10);
1474    picture->draw(&testCanvas);
1475
1476    // Both clips should be present on playback.
1477    REPORTER_ASSERT(reporter, testCanvas.getClipCount() == 2);
1478}
1479
1480static void test_hierarchical(skiatest::Reporter* reporter) {
1481    SkBitmap bm;
1482    make_bm(&bm, 10, 10, SK_ColorRED, true);
1483
1484    SkPictureRecorder recorder;
1485
1486    recorder.beginRecording(10, 10);
1487    SkAutoTUnref<SkPicture> childPlain(recorder.endRecording());
1488    REPORTER_ASSERT(reporter, !childPlain->willPlayBackBitmaps()); // 0
1489
1490    recorder.beginRecording(10, 10)->drawBitmap(bm, 0, 0);
1491    SkAutoTUnref<SkPicture> childWithBitmap(recorder.endRecording());
1492    REPORTER_ASSERT(reporter, childWithBitmap->willPlayBackBitmaps()); // 1
1493
1494    {
1495        SkCanvas* canvas = recorder.beginRecording(10, 10);
1496        canvas->drawPicture(childPlain);
1497        SkAutoTUnref<SkPicture> parentPP(recorder.endRecording());
1498        REPORTER_ASSERT(reporter, !parentPP->willPlayBackBitmaps()); // 0
1499    }
1500    {
1501        SkCanvas* canvas = recorder.beginRecording(10, 10);
1502        canvas->drawPicture(childWithBitmap);
1503        SkAutoTUnref<SkPicture> parentPWB(recorder.endRecording());
1504        REPORTER_ASSERT(reporter, parentPWB->willPlayBackBitmaps()); // 1
1505    }
1506    {
1507        SkCanvas* canvas = recorder.beginRecording(10, 10);
1508        canvas->drawBitmap(bm, 0, 0);
1509        canvas->drawPicture(childPlain);
1510        SkAutoTUnref<SkPicture> parentWBP(recorder.endRecording());
1511        REPORTER_ASSERT(reporter, parentWBP->willPlayBackBitmaps()); // 1
1512    }
1513    {
1514        SkCanvas* canvas = recorder.beginRecording(10, 10);
1515        canvas->drawBitmap(bm, 0, 0);
1516        canvas->drawPicture(childWithBitmap);
1517        SkAutoTUnref<SkPicture> parentWBWB(recorder.endRecording());
1518        REPORTER_ASSERT(reporter, parentWBWB->willPlayBackBitmaps()); // 2
1519    }
1520}
1521
1522static void test_gen_id(skiatest::Reporter* reporter) {
1523
1524    SkPictureRecorder recorder;
1525    recorder.beginRecording(0, 0);
1526    SkAutoTUnref<SkPicture> empty(recorder.endRecording());
1527
1528    // Empty pictures should still have a valid ID
1529    REPORTER_ASSERT(reporter, empty->uniqueID() != SK_InvalidGenID);
1530
1531    SkCanvas* canvas = recorder.beginRecording(1, 1);
1532    canvas->drawARGB(255, 255, 255, 255);
1533    SkAutoTUnref<SkPicture> hasData(recorder.endRecording());
1534    // picture should have a non-zero id after recording
1535    REPORTER_ASSERT(reporter, hasData->uniqueID() != SK_InvalidGenID);
1536
1537    // both pictures should have different ids
1538    REPORTER_ASSERT(reporter, hasData->uniqueID() != empty->uniqueID());
1539}
1540
1541DEF_TEST(Picture, reporter) {
1542#ifdef SK_DEBUG
1543    test_deleting_empty_picture();
1544    test_serializing_empty_picture();
1545#else
1546    test_bad_bitmap();
1547#endif
1548    test_unbalanced_save_restores(reporter);
1549    test_peephole();
1550#if SK_SUPPORT_GPU
1551    test_gpu_veto(reporter);
1552#endif
1553    test_gatherpixelrefs(reporter);
1554    test_gatherpixelrefsandrects(reporter);
1555    test_bitmap_with_encoded_data(reporter);
1556    test_draw_empty(reporter);
1557    test_clip_bound_opt(reporter);
1558    test_clip_expansion(reporter);
1559    test_hierarchical(reporter);
1560    test_gen_id(reporter);
1561}
1562
1563#if SK_SUPPORT_GPU
1564DEF_GPUTEST(GPUPicture, reporter, factory) {
1565    test_gpu_picture_optimization(reporter, factory);
1566}
1567#endif
1568
1569static void draw_bitmaps(const SkBitmap bitmap, SkCanvas* canvas) {
1570    const SkPaint paint;
1571    const SkRect rect = { 5.0f, 5.0f, 8.0f, 8.0f };
1572    const SkIRect irect =  { 2, 2, 3, 3 };
1573
1574    // Don't care what these record, as long as they're legal.
1575    canvas->drawBitmap(bitmap, 0.0f, 0.0f, &paint);
1576    canvas->drawBitmapRectToRect(bitmap, &rect, rect, &paint, SkCanvas::kNone_DrawBitmapRectFlag);
1577    canvas->drawBitmapMatrix(bitmap, SkMatrix::I(), &paint);
1578    canvas->drawBitmapNine(bitmap, irect, rect, &paint);
1579    canvas->drawSprite(bitmap, 1, 1);
1580}
1581
1582static void test_draw_bitmaps(SkCanvas* canvas) {
1583    SkBitmap empty;
1584    draw_bitmaps(empty, canvas);
1585    empty.setInfo(SkImageInfo::MakeN32Premul(10, 10));
1586    draw_bitmaps(empty, canvas);
1587}
1588
1589DEF_TEST(Picture_EmptyBitmap, r) {
1590    SkPictureRecorder recorder;
1591    test_draw_bitmaps(recorder.beginRecording(10, 10));
1592    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
1593}
1594
1595DEF_TEST(Canvas_EmptyBitmap, r) {
1596    SkBitmap dst;
1597    dst.allocN32Pixels(10, 10);
1598    SkCanvas canvas(dst);
1599
1600    test_draw_bitmaps(&canvas);
1601}
1602