1 /*
2 * Copyright 2014 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 #include "src/core/SkPicturePlayback.h"
8
9 #include "include/core/SkBlendMode.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkClipOp.h"
12 #include "include/core/SkColor.h"
13 #include "include/core/SkData.h"
14 #include "include/core/SkImage.h"
15 #include "include/core/SkMatrix.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkPoint.h"
18 #include "include/core/SkRRect.h"
19 #include "include/core/SkRSXform.h"
20 #include "include/core/SkRect.h"
21 #include "include/core/SkRefCnt.h"
22 #include "include/core/SkRegion.h"
23 #include "include/core/SkSamplingOptions.h"
24 #include "include/core/SkScalar.h"
25 #include "include/core/SkString.h"
26 #include "include/core/SkTypes.h"
27 #include "include/private/base/SkAlign.h"
28 #include "include/private/base/SkTArray.h"
29 #include "include/private/base/SkTemplates.h"
30 #include "include/private/base/SkTo.h"
31 #include "src/base/SkSafeMath.h"
32 #include "src/core/SkCanvasPriv.h"
33 #include "src/core/SkDrawShadowInfo.h"
34 #include "src/core/SkPictureData.h"
35 #include "src/core/SkPictureFlat.h"
36 #include "src/core/SkPicturePriv.h"
37 #include "src/core/SkReadBuffer.h"
38 #include "src/core/SkVerticesPriv.h"
39 #include "src/utils/SkPatchUtils.h"
40
41 #if defined(SK_GANESH)
42 #include "include/private/chromium/Slug.h"
43 #endif
44
45 class SkDrawable;
46 class SkPath;
47 class SkTextBlob;
48 class SkVertices;
49
50 using namespace skia_private;
51
get_rect_ptr(SkReadBuffer * reader,SkRect * storage)52 static const SkRect* get_rect_ptr(SkReadBuffer* reader, SkRect* storage) {
53 if (reader->readBool()) {
54 reader->readRect(storage);
55 return storage;
56 } else {
57 return nullptr;
58 }
59 }
60
draw(SkCanvas * canvas,SkPicture::AbortCallback * callback,SkReadBuffer * buffer)61 void SkPicturePlayback::draw(SkCanvas* canvas,
62 SkPicture::AbortCallback* callback,
63 SkReadBuffer* buffer) {
64 AutoResetOpID aroi(this);
65 SkASSERT(0 == fCurOffset);
66
67 SkReadBuffer reader(fPictureData->opData()->bytes(),
68 fPictureData->opData()->size());
69 reader.setVersion(fPictureData->info().getVersion());
70
71 // Record this, so we can concat w/ it if we encounter a setMatrix()
72 SkM44 initialMatrix = canvas->getLocalToDevice();
73
74 SkAutoCanvasRestore acr(canvas, false);
75
76 while (!reader.eof() && reader.isValid()) {
77 if (callback && callback->abort()) {
78 return;
79 }
80
81 fCurOffset = reader.offset();
82
83 uint32_t bits = reader.readInt();
84 uint32_t op = bits >> 24,
85 size = bits & 0xffffff;
86 if (size == 0xffffff) {
87 size = reader.readInt();
88 }
89
90 if (!reader.validate(size > 0 && op > UNUSED && op <= LAST_DRAWTYPE_ENUM)) {
91 return;
92 }
93
94 this->handleOp(&reader, (DrawType)op, size, canvas, initialMatrix);
95 }
96
97 // need to propagate invalid state to the parent reader
98 if (buffer) {
99 buffer->validate(reader.isValid());
100 }
101 }
102
validate_offsetToRestore(SkReadBuffer * reader,size_t offsetToRestore)103 static void validate_offsetToRestore(SkReadBuffer* reader, size_t offsetToRestore) {
104 if (offsetToRestore) {
105 reader->validate(SkIsAlign4(offsetToRestore) && offsetToRestore >= reader->offset());
106 }
107 }
108
do_clip_op(SkReadBuffer * reader,SkCanvas * canvas,SkRegion::Op op,SkClipOp * clipOpToUse)109 static bool do_clip_op(SkReadBuffer* reader, SkCanvas* canvas, SkRegion::Op op,
110 SkClipOp* clipOpToUse) {
111 switch(op) {
112 case SkRegion::kDifference_Op:
113 case SkRegion::kIntersect_Op:
114 // Fully supported, identity mapping between SkClipOp and Region::Op
115 *clipOpToUse = static_cast<SkClipOp>(op);
116 return true;
117 case SkRegion::kReplace_Op:
118 // Emulate the replace by resetting first and following it up with an intersect
119 SkASSERT(reader->isVersionLT(SkPicturePriv::kNoExpandingClipOps));
120 SkCanvasPriv::ResetClip(canvas);
121 *clipOpToUse = SkClipOp::kIntersect;
122 return true;
123 default:
124 // An expanding clip op, which if encountered on an old SKP, we just silently ignore
125 SkASSERT(reader->isVersionLT(SkPicturePriv::kNoExpandingClipOps));
126 return false;
127 }
128 }
129
handleOp(SkReadBuffer * reader,DrawType op,uint32_t size,SkCanvas * canvas,const SkM44 & initialMatrix)130 void SkPicturePlayback::handleOp(SkReadBuffer* reader,
131 DrawType op,
132 uint32_t size,
133 SkCanvas* canvas,
134 const SkM44& initialMatrix) {
135 #define BREAK_ON_READ_ERROR(r) if (!r->isValid()) break
136
137 switch (op) {
138 case NOOP: {
139 SkASSERT(size >= 4);
140 reader->skip(size - 4);
141 } break;
142 case FLUSH:
143 canvas->flush();
144 break;
145 case CLIP_PATH: {
146 const SkPath& path = fPictureData->getPath(reader);
147 uint32_t packed = reader->readInt();
148 SkRegion::Op rgnOp = ClipParams_unpackRegionOp(reader, packed);
149 bool doAA = ClipParams_unpackDoAA(packed);
150 size_t offsetToRestore = reader->readInt();
151 validate_offsetToRestore(reader, offsetToRestore);
152 BREAK_ON_READ_ERROR(reader);
153
154 SkClipOp clipOp;
155 if (do_clip_op(reader, canvas, rgnOp, &clipOp)) {
156 canvas->clipPath(path, clipOp, doAA);
157 }
158 if (canvas->isClipEmpty() && offsetToRestore) {
159 reader->skip(offsetToRestore - reader->offset());
160 }
161 } break;
162 case CLIP_REGION: {
163 SkRegion region;
164 reader->readRegion(®ion);
165 uint32_t packed = reader->readInt();
166 SkRegion::Op rgnOp = ClipParams_unpackRegionOp(reader, packed);
167 size_t offsetToRestore = reader->readInt();
168 validate_offsetToRestore(reader, offsetToRestore);
169 BREAK_ON_READ_ERROR(reader);
170
171 SkClipOp clipOp;
172 if (do_clip_op(reader, canvas, rgnOp, &clipOp)) {
173 canvas->clipRegion(region, clipOp);
174 }
175 if (canvas->isClipEmpty() && offsetToRestore) {
176 reader->skip(offsetToRestore - reader->offset());
177 }
178 } break;
179 case CLIP_RECT: {
180 SkRect rect;
181 reader->readRect(&rect);
182 uint32_t packed = reader->readInt();
183 SkRegion::Op rgnOp = ClipParams_unpackRegionOp(reader, packed);
184 bool doAA = ClipParams_unpackDoAA(packed);
185 size_t offsetToRestore = reader->readInt();
186 validate_offsetToRestore(reader, offsetToRestore);
187 BREAK_ON_READ_ERROR(reader);
188
189 SkClipOp clipOp;
190 if (do_clip_op(reader, canvas, rgnOp, &clipOp)) {
191 canvas->clipRect(rect, clipOp, doAA);
192 }
193 if (canvas->isClipEmpty() && offsetToRestore) {
194 reader->skip(offsetToRestore - reader->offset());
195 }
196 } break;
197 case CLIP_RRECT: {
198 SkRRect rrect;
199 reader->readRRect(&rrect);
200 uint32_t packed = reader->readInt();
201 SkRegion::Op rgnOp = ClipParams_unpackRegionOp(reader, packed);
202 bool doAA = ClipParams_unpackDoAA(packed);
203 size_t offsetToRestore = reader->readInt();
204 validate_offsetToRestore(reader, offsetToRestore);
205 BREAK_ON_READ_ERROR(reader);
206
207 SkClipOp clipOp;
208 if (do_clip_op(reader, canvas, rgnOp, &clipOp)) {
209 canvas->clipRRect(rrect, clipOp, doAA);
210 }
211 if (canvas->isClipEmpty() && offsetToRestore) {
212 reader->skip(offsetToRestore - reader->offset());
213 }
214 } break;
215 case CLIP_SHADER_IN_PAINT: {
216 const SkPaint& paint = fPictureData->requiredPaint(reader);
217 // clipShader() was never used in conjunction with deprecated, expanding clip ops, so
218 // it requires the op to just be intersect or difference.
219 SkClipOp clipOp = reader->checkRange(SkClipOp::kDifference, SkClipOp::kIntersect);
220 BREAK_ON_READ_ERROR(reader);
221
222 canvas->clipShader(paint.refShader(), clipOp);
223 } break;
224 case RESET_CLIP:
225 // For Android, an emulated "replace" clip op appears as a manual reset followed by
226 // an intersect operation (equivalent to the above handling of replace ops encountered
227 // in old serialized pictures).
228 SkCanvasPriv::ResetClip(canvas);
229 break;
230 case PUSH_CULL: break; // Deprecated, safe to ignore both push and pop.
231 case POP_CULL: break;
232 case CONCAT: {
233 SkMatrix matrix;
234 reader->readMatrix(&matrix);
235 BREAK_ON_READ_ERROR(reader);
236
237 canvas->concat(matrix);
238 break;
239 }
240 case CONCAT44: {
241 const SkScalar* colMaj = reader->skipT<SkScalar>(16);
242 BREAK_ON_READ_ERROR(reader);
243 canvas->concat(SkM44::ColMajor(colMaj));
244 break;
245 }
246 case DRAW_ANNOTATION: {
247 SkRect rect;
248 reader->readRect(&rect);
249 SkString key;
250 reader->readString(&key);
251 sk_sp<SkData> data = reader->readByteArrayAsData();
252 BREAK_ON_READ_ERROR(reader);
253 SkASSERT(data);
254
255 canvas->drawAnnotation(rect, key.c_str(), data.get());
256 } break;
257 case DRAW_ARC: {
258 const SkPaint& paint = fPictureData->requiredPaint(reader);
259 SkRect rect;
260 reader->readRect(&rect);
261 SkScalar startAngle = reader->readScalar();
262 SkScalar sweepAngle = reader->readScalar();
263 int useCenter = reader->readInt();
264 BREAK_ON_READ_ERROR(reader);
265
266 canvas->drawArc(rect, startAngle, sweepAngle, SkToBool(useCenter), paint);
267 } break;
268 case DRAW_ATLAS: {
269 const SkPaint* paint = fPictureData->optionalPaint(reader);
270 const SkImage* atlas = fPictureData->getImage(reader);
271 const uint32_t flags = reader->readUInt();
272 const int count = reader->readUInt();
273 const SkRSXform* xform = (const SkRSXform*)reader->skip(count, sizeof(SkRSXform));
274 const SkRect* tex = (const SkRect*)reader->skip(count, sizeof(SkRect));
275 const SkColor* colors = nullptr;
276 SkBlendMode mode = SkBlendMode::kDst;
277 if (flags & DRAW_ATLAS_HAS_COLORS) {
278 colors = (const SkColor*)reader->skip(count, sizeof(SkColor));
279 mode = reader->read32LE(SkBlendMode::kLastMode);
280 BREAK_ON_READ_ERROR(reader);
281 }
282 const SkRect* cull = nullptr;
283 if (flags & DRAW_ATLAS_HAS_CULL) {
284 cull = (const SkRect*)reader->skip(sizeof(SkRect));
285 }
286 BREAK_ON_READ_ERROR(reader);
287
288 SkSamplingOptions sampling;
289 if (flags & DRAW_ATLAS_HAS_SAMPLING) {
290 sampling = reader->readSampling();
291 BREAK_ON_READ_ERROR(reader);
292 }
293 canvas->drawAtlas(atlas, xform, tex, colors, count, mode, sampling, cull, paint);
294 } break;
295 case DRAW_CLEAR: {
296 auto c = reader->readInt();
297 BREAK_ON_READ_ERROR(reader);
298
299 canvas->clear(c);
300 } break;
301 case DRAW_DATA: {
302 // This opcode is now dead, just need to skip it for backwards compatibility
303 size_t length = reader->readInt();
304 (void)reader->skip(length);
305 // skip handles padding the read out to a multiple of 4
306 } break;
307 case DRAW_DRAWABLE: {
308 auto* d = fPictureData->getDrawable(reader);
309 BREAK_ON_READ_ERROR(reader);
310
311 canvas->drawDrawable(d);
312 } break;
313 case DRAW_DRAWABLE_MATRIX: {
314 SkMatrix matrix;
315 reader->readMatrix(&matrix);
316 SkDrawable* drawable = fPictureData->getDrawable(reader);
317 BREAK_ON_READ_ERROR(reader);
318
319 canvas->drawDrawable(drawable, &matrix);
320 } break;
321 case DRAW_DRRECT: {
322 const SkPaint& paint = fPictureData->requiredPaint(reader);
323 SkRRect outer, inner;
324 reader->readRRect(&outer);
325 reader->readRRect(&inner);
326 BREAK_ON_READ_ERROR(reader);
327
328 canvas->drawDRRect(outer, inner, paint);
329 } break;
330 case DRAW_EDGEAA_QUAD: {
331 SkRect rect;
332 reader->readRect(&rect);
333 SkCanvas::QuadAAFlags aaFlags = static_cast<SkCanvas::QuadAAFlags>(reader->read32());
334 SkColor4f color;
335 reader->readColor4f(&color);
336 SkBlendMode blend = reader->read32LE(SkBlendMode::kLastMode);
337 BREAK_ON_READ_ERROR(reader);
338 bool hasClip = reader->readInt();
339 SkPoint* clip = nullptr;
340 if (hasClip) {
341 clip = (SkPoint*) reader->skip(4, sizeof(SkPoint));
342 }
343 BREAK_ON_READ_ERROR(reader);
344 canvas->experimental_DrawEdgeAAQuad(rect, clip, aaFlags, color, blend);
345 } break;
346 case DRAW_EDGEAA_IMAGE_SET:
347 case DRAW_EDGEAA_IMAGE_SET2: {
348 static const size_t kEntryReadSize =
349 4 * sizeof(uint32_t) + 2 * sizeof(SkRect) + sizeof(SkScalar);
350 static const size_t kMatrixSize = 9 * sizeof(SkScalar); // != sizeof(SkMatrix)
351
352 int cnt = reader->readInt();
353 if (!reader->validate(cnt >= 0)) {
354 break;
355 }
356 const SkPaint* paint = fPictureData->optionalPaint(reader);
357
358 SkSamplingOptions sampling;
359 if (op == DRAW_EDGEAA_IMAGE_SET2) {
360 sampling = reader->readSampling();
361 } else {
362 sampling = SkSamplingOptions(SkFilterMode::kNearest);
363 }
364
365 SkCanvas::SrcRectConstraint constraint =
366 reader->checkRange(SkCanvas::kStrict_SrcRectConstraint,
367 SkCanvas::kFast_SrcRectConstraint);
368
369 if (!reader->validate(SkSafeMath::Mul(cnt, kEntryReadSize) <= reader->available())) {
370 break;
371 }
372
373 // Track minimum necessary clip points and matrices that must be provided to satisfy
374 // the entries.
375 int expectedClips = 0;
376 int maxMatrixIndex = -1;
377 AutoTArray<SkCanvas::ImageSetEntry> set(cnt);
378 for (int i = 0; i < cnt && reader->isValid(); ++i) {
379 set[i].fImage = sk_ref_sp(fPictureData->getImage(reader));
380 reader->readRect(&set[i].fSrcRect);
381 reader->readRect(&set[i].fDstRect);
382 set[i].fMatrixIndex = reader->readInt();
383 set[i].fAlpha = reader->readScalar();
384 set[i].fAAFlags = reader->readUInt();
385 set[i].fHasClip = reader->readInt();
386
387 expectedClips += set[i].fHasClip ? 1 : 0;
388 if (set[i].fMatrixIndex > maxMatrixIndex) {
389 maxMatrixIndex = set[i].fMatrixIndex;
390 }
391 }
392
393 int dstClipCount = reader->readInt();
394 SkPoint* dstClips = nullptr;
395 if (!reader->validate(dstClipCount >= 0) ||
396 !reader->validate(expectedClips <= dstClipCount)) {
397 // A bad dstClipCount (either negative, or not enough to satisfy entries).
398 break;
399 } else if (dstClipCount > 0) {
400 dstClips = (SkPoint*) reader->skip(dstClipCount, sizeof(SkPoint));
401 if (dstClips == nullptr) {
402 // Not enough bytes remaining so the reader has been invalidated
403 break;
404 }
405 }
406 int matrixCount = reader->readInt();
407 if (!reader->validate(matrixCount >= 0) ||
408 !reader->validate(maxMatrixIndex <= (matrixCount - 1)) ||
409 !reader->validate(
410 SkSafeMath::Mul(matrixCount, kMatrixSize) <= reader->available())) {
411 // Entries access out-of-bound matrix indices, given provided matrices or
412 // there aren't enough bytes to provide that many matrices
413 break;
414 }
415 SkTArray<SkMatrix> matrices(matrixCount);
416 for (int i = 0; i < matrixCount && reader->isValid(); ++i) {
417 reader->readMatrix(&matrices.push_back());
418 }
419 BREAK_ON_READ_ERROR(reader);
420
421 canvas->experimental_DrawEdgeAAImageSet(set.get(), cnt, dstClips, matrices.begin(),
422 sampling, paint, constraint);
423 } break;
424 case DRAW_IMAGE: {
425 const SkPaint* paint = fPictureData->optionalPaint(reader);
426 const SkImage* image = fPictureData->getImage(reader);
427 SkPoint loc;
428 reader->readPoint(&loc);
429 BREAK_ON_READ_ERROR(reader);
430
431 canvas->drawImage(image, loc.fX, loc.fY,
432 SkSamplingOptions(SkFilterMode::kNearest),
433 paint);
434 } break;
435 case DRAW_IMAGE2: {
436 const SkPaint* paint = fPictureData->optionalPaint(reader);
437 const SkImage* image = fPictureData->getImage(reader);
438 SkPoint loc;
439 reader->readPoint(&loc);
440 SkSamplingOptions sampling = reader->readSampling();
441 BREAK_ON_READ_ERROR(reader);
442
443 canvas->drawImage(image, loc.fX, loc.fY, sampling, paint);
444 } break;
445 case DRAW_IMAGE_LATTICE: {
446 const SkPaint* paint = fPictureData->optionalPaint(reader);
447 const SkImage* image = fPictureData->getImage(reader);
448 SkCanvas::Lattice lattice;
449 (void)SkCanvasPriv::ReadLattice(*reader, &lattice);
450 const SkRect* dst = reader->skipT<SkRect>();
451 BREAK_ON_READ_ERROR(reader);
452
453 canvas->drawImageLattice(image, lattice, *dst, SkFilterMode::kNearest, paint);
454 } break;
455 case DRAW_IMAGE_LATTICE2: {
456 const SkPaint* paint = fPictureData->optionalPaint(reader);
457 const SkImage* image = fPictureData->getImage(reader);
458 SkCanvas::Lattice lattice;
459 (void)SkCanvasPriv::ReadLattice(*reader, &lattice);
460 const SkRect* dst = reader->skipT<SkRect>();
461 SkFilterMode filter = reader->read32LE(SkFilterMode::kLinear);
462 BREAK_ON_READ_ERROR(reader);
463
464 canvas->drawImageLattice(image, lattice, *dst, filter, paint);
465 } break;
466 case DRAW_IMAGE_NINE: {
467 const SkPaint* paint = fPictureData->optionalPaint(reader);
468 const SkImage* image = fPictureData->getImage(reader);
469 SkIRect center;
470 reader->readIRect(¢er);
471 SkRect dst;
472 reader->readRect(&dst);
473 BREAK_ON_READ_ERROR(reader);
474
475 canvas->drawImageNine(image, center, dst, SkFilterMode::kNearest, paint);
476 } break;
477 case DRAW_IMAGE_RECT: {
478 const SkPaint* paint = fPictureData->optionalPaint(reader);
479 const SkImage* image = fPictureData->getImage(reader);
480 SkRect storage;
481 const SkRect* src = get_rect_ptr(reader, &storage); // may be null
482 SkRect dst;
483 reader->readRect(&dst); // required
484 // DRAW_IMAGE_RECT_STRICT assumes this constraint, and doesn't store it
485 SkCanvas::SrcRectConstraint constraint = SkCanvas::kStrict_SrcRectConstraint;
486 if (DRAW_IMAGE_RECT == op) {
487 // newer op-code stores the constraint explicitly
488 constraint = reader->checkRange(SkCanvas::kStrict_SrcRectConstraint,
489 SkCanvas::kFast_SrcRectConstraint);
490 }
491 BREAK_ON_READ_ERROR(reader);
492
493 auto sampling = SkSamplingOptions(SkFilterMode::kNearest);
494 if (src) {
495 canvas->drawImageRect(image, *src, dst, sampling, paint, constraint);
496 } else {
497 canvas->drawImageRect(image, dst, sampling, paint);
498 }
499 } break;
500 case DRAW_IMAGE_RECT2: {
501 const SkPaint* paint = fPictureData->optionalPaint(reader);
502 const SkImage* image = fPictureData->getImage(reader);
503 SkRect src = reader->readRect();
504 SkRect dst = reader->readRect();
505 SkSamplingOptions sampling = reader->readSampling();
506 auto constraint = reader->read32LE(SkCanvas::kFast_SrcRectConstraint);
507 BREAK_ON_READ_ERROR(reader);
508
509 canvas->drawImageRect(image, src, dst, sampling, paint, constraint);
510 } break;
511 case DRAW_OVAL: {
512 const SkPaint& paint = fPictureData->requiredPaint(reader);
513 SkRect rect;
514 reader->readRect(&rect);
515 BREAK_ON_READ_ERROR(reader);
516
517 canvas->drawOval(rect, paint);
518 } break;
519 case DRAW_PAINT: {
520 const SkPaint& paint = fPictureData->requiredPaint(reader);
521 BREAK_ON_READ_ERROR(reader);
522
523 canvas->drawPaint(paint);
524 } break;
525 case DRAW_BEHIND_PAINT: {
526 const SkPaint& paint = fPictureData->requiredPaint(reader);
527 BREAK_ON_READ_ERROR(reader);
528
529 SkCanvasPriv::DrawBehind(canvas, paint);
530 } break;
531 case DRAW_PATCH: {
532 const SkPaint& paint = fPictureData->requiredPaint(reader);
533
534 const SkPoint* cubics = (const SkPoint*)reader->skip(SkPatchUtils::kNumCtrlPts,
535 sizeof(SkPoint));
536 uint32_t flag = reader->readInt();
537 const SkColor* colors = nullptr;
538 if (flag & DRAW_VERTICES_HAS_COLORS) {
539 colors = (const SkColor*)reader->skip(SkPatchUtils::kNumCorners, sizeof(SkColor));
540 }
541 const SkPoint* texCoords = nullptr;
542 if (flag & DRAW_VERTICES_HAS_TEXS) {
543 texCoords = (const SkPoint*)reader->skip(SkPatchUtils::kNumCorners,
544 sizeof(SkPoint));
545 }
546 SkBlendMode bmode = SkBlendMode::kModulate;
547 if (flag & DRAW_VERTICES_HAS_XFER) {
548 unsigned mode = reader->readInt();
549 if (mode <= (unsigned)SkBlendMode::kLastMode) {
550 bmode = (SkBlendMode)mode;
551 }
552 }
553 BREAK_ON_READ_ERROR(reader);
554
555 canvas->drawPatch(cubics, colors, texCoords, bmode, paint);
556 } break;
557 case DRAW_PATH: {
558 const SkPaint& paint = fPictureData->requiredPaint(reader);
559 const auto& path = fPictureData->getPath(reader);
560 BREAK_ON_READ_ERROR(reader);
561
562 canvas->drawPath(path, paint);
563 } break;
564 case DRAW_PICTURE: {
565 const auto* pic = fPictureData->getPicture(reader);
566 BREAK_ON_READ_ERROR(reader);
567
568 canvas->drawPicture(pic);
569 } break;
570 case DRAW_PICTURE_MATRIX_PAINT: {
571 const SkPaint* paint = fPictureData->optionalPaint(reader);
572 SkMatrix matrix;
573 reader->readMatrix(&matrix);
574 const SkPicture* pic = fPictureData->getPicture(reader);
575 BREAK_ON_READ_ERROR(reader);
576
577 canvas->drawPicture(pic, &matrix, paint);
578 } break;
579 case DRAW_POINTS: {
580 const SkPaint& paint = fPictureData->requiredPaint(reader);
581 SkCanvas::PointMode mode = reader->checkRange(SkCanvas::kPoints_PointMode,
582 SkCanvas::kPolygon_PointMode);
583 size_t count = reader->readInt();
584 const SkPoint* pts = (const SkPoint*)reader->skip(count, sizeof(SkPoint));
585 BREAK_ON_READ_ERROR(reader);
586
587 canvas->drawPoints(mode, count, pts, paint);
588 } break;
589 case DRAW_RECT: {
590 const SkPaint& paint = fPictureData->requiredPaint(reader);
591 SkRect rect;
592 reader->readRect(&rect);
593 BREAK_ON_READ_ERROR(reader);
594
595 canvas->drawRect(rect, paint);
596 } break;
597 case DRAW_REGION: {
598 const SkPaint& paint = fPictureData->requiredPaint(reader);
599 SkRegion region;
600 reader->readRegion(®ion);
601 BREAK_ON_READ_ERROR(reader);
602
603 canvas->drawRegion(region, paint);
604 } break;
605 case DRAW_RRECT: {
606 const SkPaint& paint = fPictureData->requiredPaint(reader);
607 SkRRect rrect;
608 reader->readRRect(&rrect);
609 BREAK_ON_READ_ERROR(reader);
610
611 canvas->drawRRect(rrect, paint);
612 } break;
613 case DRAW_SHADOW_REC: {
614 const auto& path = fPictureData->getPath(reader);
615 SkDrawShadowRec rec;
616 reader->readPoint3(&rec.fZPlaneParams);
617 reader->readPoint3(&rec.fLightPos);
618 rec.fLightRadius = reader->readScalar();
619 rec.fAmbientColor = reader->read32();
620 rec.fSpotColor = reader->read32();
621 rec.fFlags = reader->read32();
622 BREAK_ON_READ_ERROR(reader);
623
624 canvas->private_draw_shadow_rec(path, rec);
625 } break;
626 case DRAW_TEXT_BLOB: {
627 const SkPaint& paint = fPictureData->requiredPaint(reader);
628 const SkTextBlob* blob = fPictureData->getTextBlob(reader);
629 SkScalar x = reader->readScalar();
630 SkScalar y = reader->readScalar();
631 BREAK_ON_READ_ERROR(reader);
632
633 canvas->drawTextBlob(blob, x, y, paint);
634 } break;
635 case DRAW_SLUG: {
636 #if defined(SK_GANESH)
637 const sktext::gpu::Slug* slug = fPictureData->getSlug(reader);
638 BREAK_ON_READ_ERROR(reader);
639
640 slug->draw(canvas);
641 #endif
642 } break;
643 case DRAW_VERTICES_OBJECT: {
644 const SkPaint& paint = fPictureData->requiredPaint(reader);
645 const SkVertices* vertices = fPictureData->getVertices(reader);
646 const int boneCount = reader->readInt();
647 (void)reader->skip(boneCount, sizeof(SkVertices_DeprecatedBone));
648 SkBlendMode bmode = reader->read32LE(SkBlendMode::kLastMode);
649 BREAK_ON_READ_ERROR(reader);
650
651 if (vertices) { // TODO: read error if vertices == null?
652 canvas->drawVertices(vertices, bmode, paint);
653 }
654 } break;
655 case RESTORE:
656 canvas->restore();
657 break;
658 case ROTATE: {
659 auto deg = reader->readScalar();
660 canvas->rotate(deg);
661 } break;
662 case SAVE:
663 canvas->save();
664 break;
665 case SAVE_BEHIND: {
666 uint32_t flags = reader->readInt();
667 const SkRect* subset = nullptr;
668 SkRect storage;
669 if (flags & SAVEBEHIND_HAS_SUBSET) {
670 reader->readRect(&storage);
671 subset = &storage;
672 }
673 SkCanvasPriv::SaveBehind(canvas, subset);
674 } break;
675 case SAVE_LAYER_SAVELAYERREC: {
676 SkCanvas::SaveLayerRec rec(nullptr, nullptr, nullptr, 0);
677 const uint32_t flatFlags = reader->readInt();
678 SkRect bounds;
679 if (flatFlags & SAVELAYERREC_HAS_BOUNDS) {
680 reader->readRect(&bounds);
681 rec.fBounds = &bounds;
682 }
683 if (flatFlags & SAVELAYERREC_HAS_PAINT) {
684 rec.fPaint = &fPictureData->requiredPaint(reader);
685 }
686 if (flatFlags & SAVELAYERREC_HAS_BACKDROP) {
687 const SkPaint& paint = fPictureData->requiredPaint(reader);
688 rec.fBackdrop = paint.getImageFilter();
689 }
690 if (flatFlags & SAVELAYERREC_HAS_FLAGS) {
691 rec.fSaveLayerFlags = reader->readInt();
692 }
693 if (flatFlags & SAVELAYERREC_HAS_CLIPMASK_OBSOLETE) {
694 (void)fPictureData->getImage(reader);
695 }
696 if (flatFlags & SAVELAYERREC_HAS_CLIPMATRIX_OBSOLETE) {
697 SkMatrix clipMatrix_ignored;
698 reader->readMatrix(&clipMatrix_ignored);
699 }
700 if (!reader->isVersionLT(SkPicturePriv::Version::kBackdropScaleFactor) &&
701 (flatFlags & SAVELAYERREC_HAS_BACKDROP_SCALE)) {
702 SkCanvasPriv::SetBackdropScaleFactor(&rec, reader->readScalar());
703 }
704 BREAK_ON_READ_ERROR(reader);
705
706 canvas->saveLayer(rec);
707 } break;
708 case SCALE: {
709 SkScalar sx = reader->readScalar();
710 SkScalar sy = reader->readScalar();
711 canvas->scale(sx, sy);
712 } break;
713 case SET_M44: {
714 SkM44 m;
715 reader->read(&m);
716 canvas->setMatrix(initialMatrix * m);
717 } break;
718 case SET_MATRIX: {
719 SkMatrix matrix;
720 reader->readMatrix(&matrix);
721 canvas->setMatrix(initialMatrix * SkM44(matrix));
722 } break;
723 case SKEW: {
724 SkScalar sx = reader->readScalar();
725 SkScalar sy = reader->readScalar();
726 canvas->skew(sx, sy);
727 } break;
728 case TRANSLATE: {
729 SkScalar dx = reader->readScalar();
730 SkScalar dy = reader->readScalar();
731 canvas->translate(dx, dy);
732 } break;
733 default:
734 reader->validate(false); // unknown op
735 break;
736 }
737
738 #undef BREAK_ON_READ_ERROR
739 }
740