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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CC_PAINT_PAINT_OP_BUFFER_H_ | |
6 #define CC_PAINT_PAINT_OP_BUFFER_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include "base/logging.h" | |
11 #include "cc/paint/paint_canvas.h" | |
12 #include "cc/paint/paint_export.h" | |
13 #include "cc/paint/paint_flags.h" | |
14 #include "third_party/skia/include/core/SkPicture.h" | |
15 #include "third_party/skia/include/core/SkRect.h" | |
16 #include "third_party/skia/include/core/SkTextBlob.h" | |
17 | |
18 // PaintOpBuffer is a reimplementation of SkLiteDL. | |
19 // See: third_party/skia/src/core/SkLiteDL.h. | |
20 | |
21 namespace cc { | |
22 | |
23 class DisplayItemList; | |
24 | |
25 class ThreadsafeMatrix : public SkMatrix { | |
26 public: | |
27 ThreadsafeMatrix() : SkMatrix() { (void)getType(); } | |
28 explicit ThreadsafeMatrix(const SkMatrix& matrix) : SkMatrix(matrix) { | |
29 (void)getType(); | |
30 } | |
31 }; | |
32 | |
33 class ThreadsafePath : public SkPath { | |
34 public: | |
35 explicit ThreadsafePath(const SkPath& path) : SkPath(path) { | |
36 updateBoundsCache(); | |
37 } | |
38 }; | |
39 | |
40 enum class PaintOpType : uint8_t { | |
41 ClipPath, | |
42 ClipRect, | |
43 ClipRRect, | |
44 Concat, | |
45 DrawArc, | |
46 DrawCircle, | |
47 DrawColor, | |
48 DrawDisplayItemList, | |
49 DrawDRRect, | |
50 DrawImage, | |
51 DrawImageRect, | |
52 DrawIRect, | |
53 DrawLine, | |
54 DrawOval, | |
55 DrawPath, | |
56 DrawPosText, | |
57 DrawRecord, | |
58 DrawRect, | |
59 DrawRRect, | |
60 DrawText, | |
61 DrawTextBlob, | |
62 Noop, | |
63 Restore, | |
64 Rotate, | |
65 Save, | |
66 SaveLayer, | |
67 SaveLayerAlpha, | |
68 Scale, | |
69 SetMatrix, | |
70 Translate, | |
71 LastPaintOpType = Translate, | |
72 }; | |
73 | |
74 struct CC_PAINT_EXPORT PaintOp { | |
75 uint32_t type : 8; | |
76 uint32_t skip : 24; | |
77 | |
78 PaintOpType GetType() const { return static_cast<PaintOpType>(type); } | |
79 | |
80 // Shadowy pretend virtual. | |
81 void Raster(SkCanvas* canvas) const; | |
82 bool IsDrawOp() const; | |
83 | |
84 // Only valid for draw ops. | |
85 void RasterWithAlpha(SkCanvas* canvas, uint8_t alpha) const; | |
86 | |
87 int CountSlowPaths() const { return 0; } | |
88 | |
89 static constexpr bool kIsDrawOp = false; | |
90 // If an op has |kHasPaintFlags| set to true, it must: | |
91 // (1) Provide a PaintFlags member called |flags| | |
92 // (2) Provide a RasterWithFlags function instead of a Raster function. | |
93 static constexpr bool kHasPaintFlags = false; | |
94 static SkRect kUnsetRect; | |
vmpstr
2017/03/28 18:27:14
Is this uninitialized or does static make it all 0
enne (OOO)
2017/03/28 19:28:05
It's initialized in the definition not in the decl
| |
95 }; | |
96 | |
97 struct PaintOpWithData : PaintOp { | |
98 // Having data is just a helper for ops that have a varying amount of data and | |
99 // want a way to store that inline. This is for ops that pass in a | |
100 // void* and a length. | |
101 explicit PaintOpWithData(size_t bytes) : bytes(bytes) {} | |
102 | |
103 // Get data out by calling paint_op_data. This can't be part of the class | |
104 // because it needs to know the size of the derived type. | |
105 size_t bytes; | |
106 }; | |
107 | |
108 template <typename T> | |
109 const void* paint_op_data(const T* op) { | |
110 static_assert(std::is_convertible<T, PaintOpWithData>::value, | |
111 "T is not a PaintOpWithData"); | |
112 return op + 1; | |
vmpstr
2017/03/28 18:27:14
Could use a comment here.. I'm not really sure why
enne (OOO)
2017/03/28 19:28:05
Done.
| |
113 } | |
114 | |
115 template <typename T> | |
116 void* paint_op_data(T* op) { | |
117 static_assert(std::is_convertible<T, PaintOpWithData>::value, | |
118 "T is not a PaintOpWithData"); | |
119 return op + 1; | |
120 } | |
121 | |
122 struct PaintOpWithDataArrayBase : PaintOpWithData { | |
123 // Helper class for static asserts in push functions. | |
124 using PaintOpWithData::PaintOpWithData; | |
125 }; | |
126 | |
127 template <typename T> | |
128 struct PaintOpWithDataArray : PaintOpWithDataArrayBase { | |
129 // Paint op that has a T[count] and a char[bytes]. | |
130 PaintOpWithDataArray(size_t bytes, size_t count) | |
131 : PaintOpWithDataArrayBase(bytes), count(count) {} | |
132 // Use paint_op_array to get array data. | |
133 | |
134 size_t count; | |
135 }; | |
136 | |
137 template <typename M, typename T> | |
138 const M* paint_op_array(const T* op) { | |
139 static_assert(std::is_convertible<T, PaintOpWithDataArrayBase>::value, | |
140 "T is not a PaintOpWithDataArray"); | |
141 return SkTAddOffset<const M>(op + 1, op->bytes); | |
142 } | |
143 template <typename M, typename T> | |
144 M* paint_op_array(T* op) { | |
145 static_assert(std::is_convertible<T, PaintOpWithDataArrayBase>::value, | |
146 "T is not a PaintOpWithDataArray"); | |
147 return SkTAddOffset<M>(op + 1, op->bytes); | |
148 } | |
149 | |
150 struct ClipPathOp final : PaintOp { | |
151 static constexpr PaintOpType kType = PaintOpType::ClipPath; | |
152 ClipPathOp(SkPath path, SkClipOp op, bool antialias) | |
153 : path(path), op(op), antialias(antialias) {} | |
154 void Raster(SkCanvas* canvas) const; | |
155 int CountSlowPaths() const; | |
156 | |
157 ThreadsafePath path; | |
158 SkClipOp op; | |
159 bool antialias; | |
160 }; | |
161 | |
162 struct ClipRectOp final : PaintOp { | |
163 static constexpr PaintOpType kType = PaintOpType::ClipRect; | |
164 ClipRectOp(const SkRect& rect, SkClipOp op, bool antialias) | |
165 : rect(rect), op(op), antialias(antialias) {} | |
166 void Raster(SkCanvas* canvas) const; | |
167 | |
168 SkRect rect; | |
169 SkClipOp op; | |
170 bool antialias; | |
171 }; | |
172 | |
173 struct ClipRRectOp final : PaintOp { | |
174 static constexpr PaintOpType kType = PaintOpType::ClipRRect; | |
175 ClipRRectOp(const SkRRect& rrect, SkClipOp op, bool antialias) | |
176 : rrect(rrect), op(op), antialias(antialias) {} | |
177 void Raster(SkCanvas* canvas) const; | |
178 | |
179 SkRRect rrect; | |
180 SkClipOp op; | |
181 bool antialias; | |
182 }; | |
183 | |
184 struct ConcatOp final : PaintOp { | |
185 static constexpr PaintOpType kType = PaintOpType::Concat; | |
186 explicit ConcatOp(const SkMatrix& matrix) : matrix(matrix) {} | |
187 void Raster(SkCanvas* canvas) const; | |
188 | |
189 ThreadsafeMatrix matrix; | |
190 }; | |
191 | |
192 struct DrawArcOp final : PaintOp { | |
193 static constexpr PaintOpType kType = PaintOpType::DrawArc; | |
194 static constexpr bool kIsDrawOp = true; | |
195 static constexpr bool kHasPaintFlags = true; | |
196 DrawArcOp(const SkRect& oval, | |
197 SkScalar start_angle, | |
198 SkScalar sweep_angle, | |
199 bool use_center, | |
200 const PaintFlags& flags) | |
201 : oval(oval), | |
202 start_angle(start_angle), | |
203 sweep_angle(sweep_angle), | |
204 use_center(use_center), | |
205 flags(flags) {} | |
206 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
207 | |
208 SkRect oval; | |
vmpstr
2017/03/28 18:27:15
:D
enne (OOO)
2017/03/28 19:28:05
That's how it is!
| |
209 SkScalar start_angle; | |
210 SkScalar sweep_angle; | |
211 bool use_center; | |
212 const PaintFlags& flags; | |
213 }; | |
214 | |
215 struct DrawCircleOp final : PaintOp { | |
216 static constexpr PaintOpType kType = PaintOpType::DrawCircle; | |
217 static constexpr bool kIsDrawOp = true; | |
218 static constexpr bool kHasPaintFlags = true; | |
219 DrawCircleOp(SkScalar cx, | |
220 SkScalar cy, | |
221 SkScalar radius, | |
222 const PaintFlags& flags) | |
223 : cx(cx), cy(cy), radius(radius), flags(flags) {} | |
224 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
225 | |
226 SkScalar cx; | |
227 SkScalar cy; | |
228 SkScalar radius; | |
229 PaintFlags flags; | |
230 }; | |
231 | |
232 struct DrawColorOp final : PaintOp { | |
233 static constexpr PaintOpType kType = PaintOpType::DrawColor; | |
234 static constexpr bool kIsDrawOp = true; | |
235 DrawColorOp(SkColor color, SkBlendMode mode) : color(color), mode(mode) {} | |
236 void Raster(SkCanvas* canvas) const; | |
237 | |
238 SkColor color; | |
239 SkBlendMode mode; | |
240 }; | |
241 | |
242 struct DrawDisplayItemListOp final : PaintOp { | |
243 static constexpr PaintOpType kType = PaintOpType::DrawDisplayItemList; | |
244 static constexpr bool kIsDrawOp = true; | |
245 explicit DrawDisplayItemListOp(scoped_refptr<DisplayItemList> list); | |
246 ~DrawDisplayItemListOp(); | |
247 void Raster(SkCanvas* canvas) const; | |
248 // TODO(enne): DisplayItemList should know number of slow paths. | |
249 | |
250 scoped_refptr<DisplayItemList> list; | |
251 }; | |
252 | |
253 struct DrawDRRectOp final : PaintOp { | |
254 static constexpr PaintOpType kType = PaintOpType::DrawDRRect; | |
255 static constexpr bool kIsDrawOp = true; | |
256 static constexpr bool kHasPaintFlags = true; | |
257 DrawDRRectOp(const SkRRect& outer, | |
258 const SkRRect& inner, | |
259 const PaintFlags& flags) | |
260 : outer(outer), inner(inner), flags(flags) {} | |
261 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
262 | |
263 SkRRect outer; | |
264 SkRRect inner; | |
265 PaintFlags flags; | |
266 }; | |
267 | |
268 struct DrawImageOp final : PaintOp { | |
269 static constexpr PaintOpType kType = PaintOpType::DrawImage; | |
270 static constexpr bool kIsDrawOp = true; | |
271 static constexpr bool kHasPaintFlags = true; | |
272 DrawImageOp(sk_sp<const SkImage> image, | |
273 SkScalar left, | |
274 SkScalar top, | |
275 const PaintFlags* flags); | |
276 ~DrawImageOp(); | |
277 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
278 | |
279 sk_sp<const SkImage> image; | |
280 SkScalar left; | |
281 SkScalar top; | |
282 PaintFlags flags; | |
283 }; | |
284 | |
285 struct DrawImageRectOp final : PaintOp { | |
286 static constexpr PaintOpType kType = PaintOpType::DrawImageRect; | |
287 static constexpr bool kIsDrawOp = true; | |
288 static constexpr bool kHasPaintFlags = true; | |
289 DrawImageRectOp(sk_sp<const SkImage> image, | |
290 const SkRect& src, | |
291 const SkRect& dst, | |
292 const PaintFlags* flags, | |
293 PaintCanvas::SrcRectConstraint constraint); | |
294 ~DrawImageRectOp(); | |
295 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
296 | |
297 sk_sp<const SkImage> image; | |
298 PaintFlags flags; | |
299 SkRect src; | |
300 SkRect dst; | |
301 PaintCanvas::SrcRectConstraint constraint; | |
302 }; | |
303 | |
304 struct DrawIRectOp final : PaintOp { | |
305 static constexpr PaintOpType kType = PaintOpType::DrawIRect; | |
306 static constexpr bool kIsDrawOp = true; | |
307 static constexpr bool kHasPaintFlags = true; | |
308 DrawIRectOp(const SkIRect& rect, const PaintFlags& flags) | |
309 : rect(rect), flags(flags) {} | |
310 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
311 | |
312 SkIRect rect; | |
313 PaintFlags flags; | |
314 }; | |
315 | |
316 struct DrawLineOp final : PaintOp { | |
317 static constexpr PaintOpType kType = PaintOpType::DrawLine; | |
318 static constexpr bool kIsDrawOp = true; | |
319 static constexpr bool kHasPaintFlags = true; | |
320 DrawLineOp(SkScalar x0, | |
321 SkScalar y0, | |
322 SkScalar x1, | |
323 SkScalar y1, | |
324 const PaintFlags& flags) | |
325 : x0(x0), y0(y0), x1(x1), y1(y1), flags(flags) {} | |
326 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
327 int CountSlowPaths() const; | |
328 | |
329 SkScalar x0; | |
330 SkScalar y0; | |
331 SkScalar x1; | |
332 SkScalar y1; | |
333 PaintFlags flags; | |
334 }; | |
335 | |
336 struct DrawOvalOp final : PaintOp { | |
337 static constexpr PaintOpType kType = PaintOpType::DrawOval; | |
338 static constexpr bool kIsDrawOp = true; | |
339 static constexpr bool kHasPaintFlags = true; | |
340 DrawOvalOp(const SkRect& oval, const PaintFlags& flags) | |
341 : oval(oval), flags(flags) {} | |
342 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
343 | |
344 SkRect oval; | |
345 PaintFlags flags; | |
346 }; | |
347 | |
348 struct DrawPathOp final : PaintOp { | |
349 static constexpr PaintOpType kType = PaintOpType::DrawPath; | |
350 static constexpr bool kIsDrawOp = true; | |
351 static constexpr bool kHasPaintFlags = true; | |
352 DrawPathOp(const SkPath& path, const PaintFlags& flags) | |
353 : path(path), flags(flags) {} | |
354 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
355 int CountSlowPaths() const; | |
356 | |
357 ThreadsafePath path; | |
358 PaintFlags flags; | |
359 }; | |
360 | |
361 struct DrawPosTextOp final : PaintOpWithDataArray<SkPoint> { | |
362 static constexpr PaintOpType kType = PaintOpType::DrawPosText; | |
363 static constexpr bool kIsDrawOp = true; | |
364 static constexpr bool kHasPaintFlags = true; | |
365 DrawPosTextOp(size_t bytes, size_t count, const PaintFlags& flags); | |
366 ~DrawPosTextOp(); | |
367 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
368 | |
369 PaintFlags flags; | |
370 }; | |
371 | |
372 struct DrawRecordOp final : PaintOp { | |
373 static constexpr PaintOpType kType = PaintOpType::DrawRecord; | |
374 static constexpr bool kIsDrawOp = true; | |
375 explicit DrawRecordOp(sk_sp<const PaintRecord> record); | |
376 ~DrawRecordOp(); | |
377 void Raster(SkCanvas* canvas) const; | |
378 | |
379 sk_sp<const PaintRecord> record; | |
380 }; | |
381 | |
382 struct DrawRectOp final : PaintOp { | |
383 static constexpr PaintOpType kType = PaintOpType::DrawRect; | |
384 static constexpr bool kIsDrawOp = true; | |
385 static constexpr bool kHasPaintFlags = true; | |
386 DrawRectOp(const SkRect& rect, const PaintFlags& flags) | |
387 : rect(rect), flags(flags) {} | |
388 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
389 | |
390 SkRect rect; | |
391 PaintFlags flags; | |
392 }; | |
393 | |
394 struct DrawRRectOp final : PaintOp { | |
395 static constexpr PaintOpType kType = PaintOpType::DrawRRect; | |
396 static constexpr bool kIsDrawOp = true; | |
397 static constexpr bool kHasPaintFlags = true; | |
398 DrawRRectOp(const SkRRect& rrect, const PaintFlags& flags) | |
399 : rrect(rrect), flags(flags) {} | |
400 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
401 | |
402 SkRRect rrect; | |
403 PaintFlags flags; | |
404 }; | |
405 | |
406 struct DrawTextOp final : PaintOpWithData { | |
407 static constexpr PaintOpType kType = PaintOpType::DrawText; | |
408 static constexpr bool kIsDrawOp = true; | |
409 static constexpr bool kHasPaintFlags = true; | |
410 DrawTextOp(size_t bytes, SkScalar x, SkScalar y, const PaintFlags& flags) | |
411 : PaintOpWithData(bytes), x(x), y(y), flags(flags) {} | |
412 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
413 | |
414 SkScalar x; | |
415 SkScalar y; | |
416 PaintFlags flags; | |
417 }; | |
418 | |
419 struct DrawTextBlobOp final : PaintOp { | |
420 static constexpr PaintOpType kType = PaintOpType::DrawTextBlob; | |
421 static constexpr bool kIsDrawOp = true; | |
422 static constexpr bool kHasPaintFlags = true; | |
423 DrawTextBlobOp(sk_sp<SkTextBlob> blob, | |
424 SkScalar x, | |
425 SkScalar y, | |
426 const PaintFlags& flags); | |
427 ~DrawTextBlobOp(); | |
428 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
429 | |
430 sk_sp<SkTextBlob> blob; | |
431 SkScalar x; | |
432 SkScalar y; | |
433 PaintFlags flags; | |
434 }; | |
435 | |
436 struct NoopOp final : PaintOp { | |
437 static constexpr PaintOpType kType = PaintOpType::Noop; | |
438 void Raster(SkCanvas* canvas) const {} | |
439 }; | |
440 | |
441 struct RestoreOp final : PaintOp { | |
442 static constexpr PaintOpType kType = PaintOpType::Restore; | |
443 void Raster(SkCanvas* canvas) const; | |
444 }; | |
445 | |
446 struct RotateOp final : PaintOp { | |
447 static constexpr PaintOpType kType = PaintOpType::Rotate; | |
448 explicit RotateOp(SkScalar degrees) : degrees(degrees) {} | |
449 void Raster(SkCanvas* canvas) const; | |
450 | |
451 SkScalar degrees; | |
452 }; | |
453 | |
454 struct SaveOp final : PaintOp { | |
455 static constexpr PaintOpType kType = PaintOpType::Save; | |
456 void Raster(SkCanvas* canvas) const; | |
457 }; | |
458 | |
459 struct SaveLayerOp final : PaintOp { | |
460 static constexpr PaintOpType kType = PaintOpType::SaveLayer; | |
461 static constexpr bool kHasPaintFlags = true; | |
462 SaveLayerOp(const SkRect* bounds, const PaintFlags* flags) | |
463 : bounds(bounds ? *bounds : kUnsetRect) { | |
464 if (flags) | |
465 this->flags = *flags; | |
466 } | |
467 void RasterWithFlags(SkCanvas* canvas, const PaintFlags& flags) const; | |
468 | |
469 SkRect bounds; | |
470 PaintFlags flags; | |
471 }; | |
472 | |
473 struct SaveLayerAlphaOp final : PaintOp { | |
474 static constexpr PaintOpType kType = PaintOpType::SaveLayerAlpha; | |
475 SaveLayerAlphaOp(const SkRect* bounds, uint8_t alpha) | |
476 : bounds(bounds ? *bounds : kUnsetRect), alpha(alpha) {} | |
477 void Raster(SkCanvas* canvas) const; | |
478 | |
479 SkRect bounds; | |
480 uint8_t alpha; | |
481 }; | |
482 | |
483 struct ScaleOp final : PaintOp { | |
484 static constexpr PaintOpType kType = PaintOpType::Scale; | |
485 ScaleOp(SkScalar sx, SkScalar sy) : sx(sx), sy(sy) {} | |
486 void Raster(SkCanvas* canvas) const; | |
487 | |
488 SkScalar sx; | |
489 SkScalar sy; | |
490 }; | |
491 | |
492 struct SetMatrixOp final : PaintOp { | |
493 static constexpr PaintOpType kType = PaintOpType::SetMatrix; | |
494 explicit SetMatrixOp(const SkMatrix& matrix) : matrix(matrix) {} | |
495 void Raster(SkCanvas* canvas) const; | |
496 | |
497 ThreadsafeMatrix matrix; | |
498 }; | |
499 | |
500 struct TranslateOp final : PaintOp { | |
501 static constexpr PaintOpType kType = PaintOpType::Translate; | |
502 TranslateOp(SkScalar dx, SkScalar dy) : dx(dx), dy(dy) {} | |
503 void Raster(SkCanvas* canvas) const; | |
504 | |
505 SkScalar dx; | |
506 SkScalar dy; | |
507 }; | |
508 | |
509 using LargestPaintOp = DrawDRRectOp; | |
510 | |
511 class CC_PAINT_EXPORT PaintOpBuffer : public SkRefCnt { | |
512 public: | |
513 enum { kPageSize = 4096 }; | |
514 | |
515 PaintOpBuffer(); | |
516 explicit PaintOpBuffer(const SkRect& cull_rect); | |
517 ~PaintOpBuffer() override; | |
518 | |
519 void Reset(); | |
520 | |
521 void playback(SkCanvas* canvas) const; | |
522 void playback(SkCanvas* canvas, SkPicture::AbortCallback* callback) const; | |
523 | |
524 int approximateOpCount() const { return op_count_; } | |
525 size_t approximateBytesUsed() const { return used_; } | |
526 int numSlowPaths() const { return num_slow_paths_; } | |
527 | |
528 const SkRect& cullRect() const { return cull_rect_; } | |
529 | |
530 PaintOp* GetFirstOp() const { | |
531 return reinterpret_cast<PaintOp*>(const_cast<char*>(&first_op_[0])); | |
532 } | |
533 | |
534 template <typename T, typename... Args> | |
535 void push(Args&&... args) { | |
536 static_assert(std::is_convertible<T, PaintOp>::value, "T not a PaintOp."); | |
537 static_assert(!std::is_convertible<T, PaintOpWithData>::value, | |
538 "Type needs to use push_with_data"); | |
539 push_internal<T>(0, std::forward<Args>(args)...); | |
540 } | |
541 | |
542 template <typename T, typename... Args> | |
543 void push_with_data(const void* data, size_t bytes, Args&&... args) { | |
544 static_assert(std::is_convertible<T, PaintOpWithData>::value, | |
545 "T is not a PaintOpWithData"); | |
546 static_assert(!std::is_convertible<T, PaintOpWithDataArrayBase>::value, | |
547 "Type needs to use push_with_data_array"); | |
548 DCHECK_GE(bytes, 0u); | |
549 T* op = push_internal<T>(bytes, bytes, std::forward<Args>(args)...); | |
550 memcpy(paint_op_data(op), data, bytes); | |
551 | |
552 #if DCHECK_IS_ON() | |
553 // Double check the data fits between op and next op and doesn't clobber. | |
554 char* op_start = reinterpret_cast<char*>(op); | |
555 char* op_end = op_start + sizeof(T); | |
556 char* next_op = op_start + op->skip; | |
557 char* data_start = reinterpret_cast<char*>(paint_op_data(op)); | |
558 char* data_end = data_start + bytes; | |
559 DCHECK_GE(data_start, op_end); | |
560 DCHECK_LT(data_start, next_op); | |
561 DCHECK_LE(data_end, next_op); | |
562 #endif | |
563 } | |
564 | |
565 template <typename T, typename M, typename... Args> | |
566 void push_with_data_array(const void* data, | |
567 size_t bytes, | |
568 const M* array, | |
569 size_t count, | |
570 Args&&... args) { | |
571 static_assert(std::is_convertible<T, PaintOpWithDataArray<M>>::value, | |
572 "T is not a PaintOpWithDataArray"); | |
573 DCHECK_GE(bytes, 0u); | |
574 DCHECK_GE(count, 0u); | |
575 size_t array_size = sizeof(M) * count; | |
576 size_t total_size = bytes + array_size; | |
577 T* op = | |
578 push_internal<T>(total_size, bytes, count, std::forward<Args>(args)...); | |
579 memcpy(paint_op_data(op), data, bytes); | |
580 memcpy(paint_op_array<M>(op), array, array_size); | |
581 | |
582 #if DCHECK_IS_ON() | |
583 // Double check data and array don't clobber op, next op, or each other | |
584 char* op_start = reinterpret_cast<char*>(op); | |
585 char* op_end = op_start + sizeof(T); | |
586 char* next_op = op_start + op->skip; | |
587 char* data_start = reinterpret_cast<char*>(paint_op_data(op)); | |
588 char* data_end = data_start + bytes; | |
589 char* array_start = reinterpret_cast<char*>(paint_op_array<M>(op)); | |
590 char* array_end = array_start + array_size; | |
591 DCHECK_GE(data_start, op_end); | |
592 DCHECK_LE(data_start, array_start); | |
593 DCHECK_GE(array_start, data_end); | |
594 DCHECK_LE(array_end, next_op); | |
595 #endif | |
596 } | |
597 | |
598 class Iterator { | |
599 public: | |
600 explicit Iterator(const PaintOpBuffer* buffer) | |
601 : buffer_(buffer), ptr_(buffer_->data_.get()) {} | |
602 | |
603 PaintOp* operator->() const { | |
604 return op_idx_ ? reinterpret_cast<PaintOp*>(ptr_) : buffer_->GetFirstOp(); | |
605 } | |
606 PaintOp* operator*() const { return operator->(); } | |
vmpstr
2017/03/28 18:27:15
minor thing: This should probably return PaintOp&?
enne (OOO)
2017/03/28 19:28:05
You might want to fix up some of the tiling iterat
| |
607 Iterator begin() { return Iterator(buffer_, buffer_->data_.get(), 0); } | |
608 Iterator end() { | |
609 return Iterator(buffer_, buffer_->data_.get() + buffer_->used_, | |
610 buffer_->approximateOpCount()); | |
611 } | |
612 bool operator!=(const Iterator& other) { | |
613 // Not valid to compare iterators on different buffers. | |
614 DCHECK_EQ(other.buffer_, buffer_); | |
615 return other.op_idx_ != op_idx_; | |
616 } | |
617 Iterator& operator++() { | |
618 if (!op_idx_++) | |
619 return *this; | |
620 PaintOp* op = **this; | |
621 uint32_t type = op->type; | |
622 CHECK_LE(type, static_cast<uint32_t>(PaintOpType::LastPaintOpType)); | |
623 ptr_ += op->skip; | |
624 return *this; | |
625 } | |
626 operator bool() const { return op_idx_ < buffer_->approximateOpCount(); } | |
627 | |
628 // Return the next op without advancing the iterator, or nullptr if none. | |
629 PaintOp* peek1() const { | |
630 if (op_idx_ + 1 >= buffer_->approximateOpCount()) | |
631 return nullptr; | |
632 if (!op_idx_) | |
633 return reinterpret_cast<PaintOp*>(ptr_); | |
634 return reinterpret_cast<PaintOp*>(ptr_ + (*this)->skip); | |
635 } | |
636 | |
637 // Return the op two ops ahead without advancing the iterator, or nullptr if | |
638 // none. | |
639 PaintOp* peek2() const { | |
640 if (op_idx_ + 2 >= buffer_->approximateOpCount()) | |
641 return nullptr; | |
642 char* next = ptr_ + (*this)->skip; | |
643 PaintOp* next_op = reinterpret_cast<PaintOp*>(next); | |
644 if (!op_idx_) | |
645 return next_op; | |
646 return reinterpret_cast<PaintOp*>(next + next_op->skip); | |
647 } | |
648 | |
649 private: | |
650 Iterator(const PaintOpBuffer* buffer, char* ptr, int op_idx) | |
651 : buffer_(buffer), ptr_(ptr), op_idx_(op_idx) {} | |
652 | |
653 const PaintOpBuffer* buffer_; | |
654 char* ptr_; | |
655 int op_idx_ = 0; | |
656 }; | |
657 | |
658 private: | |
659 template <typename T, bool HasFlags> | |
660 struct CountSlowPathsFromFlags { | |
661 static int Count(const T* op) { return 0; } | |
662 }; | |
663 | |
664 template <typename T> | |
665 struct CountSlowPathsFromFlags<T, true> { | |
666 static int Count(const T* op) { return op->flags.getPathEffect() ? 1 : 0; } | |
667 }; | |
668 | |
669 template <typename T, typename... Args> | |
670 T* push_internal(size_t bytes, Args&&... args) { | |
671 size_t skip = SkAlignPtr(sizeof(T) + bytes); | |
672 DCHECK_LT(skip, static_cast<size_t>(1) << 24); | |
673 if (used_ + skip > reserved_) { | |
674 if (!op_count_) { | |
675 if (bytes) { | |
676 // Internal first_op buffer doesn't have room for extra data. | |
677 // If the op wants extra bytes, then we'll just store a Noop | |
678 // in the first_op and proceed from there. This seems unlikely | |
679 // to be a common case. | |
680 push<NoopOp>(); | |
681 } else { | |
682 T* op = reinterpret_cast<T*>(&first_op_[0]); | |
683 new (op) T{std::forward<Args>(args)...}; | |
684 op->type = static_cast<uint32_t>(T::kType); | |
685 op->skip = 0; | |
686 op_count_++; | |
687 return op; | |
688 } | |
689 } | |
690 | |
691 static_assert(SkIsPow2(kPageSize), | |
692 "This math needs updating for non-pow2."); | |
693 // Next greater multiple of kPageSize. | |
694 reserved_ = (used_ + skip + kPageSize) & ~(kPageSize - 1); | |
695 data_.realloc(reserved_); | |
696 } | |
697 DCHECK_LE(used_ + skip, reserved_); | |
698 | |
699 T* op = reinterpret_cast<T*>(data_.get() + used_); | |
700 used_ += skip; | |
701 new (op) T{std::forward<Args>(args)...}; | |
702 op->type = static_cast<uint32_t>(T::kType); | |
703 op->skip = skip; | |
704 op_count_++; | |
705 | |
706 num_slow_paths_ += CountSlowPathsFromFlags<T, T::kHasPaintFlags>::Count(op); | |
707 num_slow_paths_ += op->CountSlowPaths(); | |
708 | |
709 return op; | |
710 } | |
711 | |
712 char first_op_[sizeof(LargestPaintOp)]; | |
713 SkAutoTMalloc<char> data_; | |
714 size_t used_ = 0; | |
715 size_t reserved_ = 0; | |
716 int op_count_ = 0; | |
717 | |
718 int num_slow_paths_ = 0; | |
719 SkRect cull_rect_; | |
720 | |
721 DISALLOW_COPY_AND_ASSIGN(PaintOpBuffer); | |
722 }; | |
723 | |
724 } // namespace cc | |
725 | |
726 #endif // CC_PAINT_PAINT_OP_BUFFER_H_ | |
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