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 8 #include "gm.h" 9 10 #include "SkColorFilter.h" 11 #include "SkMultiPictureDraw.h" 12 #include "SkPictureRecorder.h" 13 #include "SkSurface.h" 14 15 static const SkScalar kRoot3Over2 = 0.86602545f; // sin(60) 16 static const SkScalar kRoot3 = 1.73205081f; 17 18 static const int kHexSide = 30; 19 static const int kNumHexX = 6; 20 static const int kNumHexY = 6; 21 static const int kPicWidth = kNumHexX * kHexSide; 22 static const int kPicHeight = SkScalarCeilToInt((kNumHexY - 0.5f) * 2 * kHexSide * kRoot3Over2); 23 static const SkScalar kInset = 20.0f; 24 static const int kNumPictures = 4; 25 26 static const int kTriSide = 40; 27 28 // Create a hexagon centered at (originX, originY) 29 static SkPath make_hex_path(SkScalar originX, SkScalar originY) { 30 SkPath hex; 31 hex.moveTo(originX-kHexSide, originY); 32 hex.rLineTo(SkScalarHalf(kHexSide), kRoot3Over2 * kHexSide); 33 hex.rLineTo(SkIntToScalar(kHexSide), 0); 34 hex.rLineTo(SkScalarHalf(kHexSide), -kHexSide * kRoot3Over2); 35 hex.rLineTo(-SkScalarHalf(kHexSide), -kHexSide * kRoot3Over2); 36 hex.rLineTo(-SkIntToScalar(kHexSide), 0); 37 hex.close(); 38 return hex; 39 } 40 41 // Make a picture that is a tiling of the plane with stroked hexagons where 42 // each hexagon is in its own layer. The layers are to exercise Ganesh's 43 // layer hoisting. 44 static const SkPicture* make_hex_plane_picture(SkColor fillColor) { 45 46 // Create a hexagon with its center at the origin 47 SkPath hex = make_hex_path(0, 0); 48 49 SkPaint fill; 50 fill.setStyle(SkPaint::kFill_Style); 51 fill.setColor(fillColor); 52 53 SkPaint stroke; 54 stroke.setStyle(SkPaint::kStroke_Style); 55 stroke.setStrokeWidth(3); 56 57 SkPictureRecorder recorder; 58 SkRTreeFactory bbhFactory; 59 60 SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth), 61 SkIntToScalar(kPicHeight), 62 &bbhFactory, 63 SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag); 64 65 SkScalar xPos, yPos = 0; 66 67 for (int y = 0; y < kNumHexY; ++y) { 68 xPos = 0; 69 70 for (int x = 0; x < kNumHexX; ++x) { 71 canvas->saveLayer(nullptr, nullptr); 72 canvas->translate(xPos, yPos + ((x % 2) ? kRoot3Over2 * kHexSide : 0)); 73 canvas->drawPath(hex, fill); 74 canvas->drawPath(hex, stroke); 75 canvas->restore(); 76 77 xPos += 1.5f * kHexSide; 78 } 79 80 yPos += 2 * kHexSide * kRoot3Over2; 81 } 82 83 return recorder.endRecording(); 84 } 85 86 // Create a picture that consists of a single large layer that is tiled 87 // with hexagons. 88 // This is intended to exercise the layer hoisting code's clip handling (in 89 // tile mode). 90 static const SkPicture* make_single_layer_hex_plane_picture() { 91 92 // Create a hexagon with its center at the origin 93 SkPath hex = make_hex_path(0, 0); 94 95 SkPaint whiteFill; 96 whiteFill.setStyle(SkPaint::kFill_Style); 97 whiteFill.setColor(SK_ColorWHITE); 98 99 SkPaint greyFill; 100 greyFill.setStyle(SkPaint::kFill_Style); 101 greyFill.setColor(sk_tool_utils::color_to_565(SK_ColorLTGRAY)); 102 103 SkPaint stroke; 104 stroke.setStyle(SkPaint::kStroke_Style); 105 stroke.setStrokeWidth(3); 106 107 SkPictureRecorder recorder; 108 SkRTreeFactory bbhFactory; 109 110 static const SkScalar kBig = 10000.0f; 111 SkCanvas* canvas = recorder.beginRecording(kBig, kBig, &bbhFactory, 112 SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag); 113 114 canvas->saveLayer(nullptr, nullptr); 115 116 SkScalar xPos = 0.0f, yPos = 0.0f; 117 118 for (int y = 0; yPos < kBig; ++y) { 119 xPos = 0; 120 121 for (int x = 0; xPos < kBig; ++x) { 122 canvas->save(); 123 canvas->translate(xPos, yPos + ((x % 2) ? kRoot3Over2 * kHexSide : 0)); 124 // The color of the filled hex is swapped to yield a different 125 // pattern in each tile. This allows an error in layer hoisting (e.g., 126 // the clip isn't blocking cache reuse) to cause a visual discrepancy. 127 canvas->drawPath(hex, ((x+y) % 3) ? whiteFill : greyFill); 128 canvas->drawPath(hex, stroke); 129 canvas->restore(); 130 131 xPos += 1.5f * kHexSide; 132 } 133 134 yPos += 2 * kHexSide * kRoot3Over2; 135 } 136 137 canvas->restore(); 138 139 return recorder.endRecording(); 140 } 141 142 // Make an equilateral triangle path with its top corner at (originX, originY) 143 static SkPath make_tri_path(SkScalar originX, SkScalar originY) { 144 SkPath tri; 145 tri.moveTo(originX, originY); 146 tri.rLineTo(SkScalarHalf(kTriSide), 1.5f * kTriSide / kRoot3); 147 tri.rLineTo(-kTriSide, 0); 148 tri.close(); 149 return tri; 150 } 151 152 static const SkPicture* make_tri_picture() { 153 SkPath tri = make_tri_path(SkScalarHalf(kTriSide), 0); 154 155 SkPaint fill; 156 fill.setStyle(SkPaint::kFill_Style); 157 fill.setColor(sk_tool_utils::color_to_565(SK_ColorLTGRAY)); 158 159 SkPaint stroke; 160 stroke.setStyle(SkPaint::kStroke_Style); 161 stroke.setStrokeWidth(3); 162 163 SkPictureRecorder recorder; 164 SkRTreeFactory bbhFactory; 165 166 SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth), 167 SkIntToScalar(kPicHeight), 168 &bbhFactory, 169 SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag); 170 SkRect r = tri.getBounds(); 171 r.outset(2.0f, 2.0f); // outset for stroke 172 canvas->clipRect(r); 173 // The saveLayer/restore block is to exercise layer hoisting 174 canvas->saveLayer(nullptr, nullptr); 175 canvas->drawPath(tri, fill); 176 canvas->drawPath(tri, stroke); 177 canvas->restore(); 178 179 return recorder.endRecording(); 180 } 181 182 static const SkPicture* make_sub_picture(const SkPicture* tri) { 183 SkPictureRecorder recorder; 184 SkRTreeFactory bbhFactory; 185 186 SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth), 187 SkIntToScalar(kPicHeight), 188 &bbhFactory, 189 SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag); 190 191 canvas->scale(1.0f/2.0f, 1.0f/2.0f); 192 193 canvas->save(); 194 canvas->translate(SkScalarHalf(kTriSide), 0); 195 canvas->drawPicture(tri); 196 canvas->restore(); 197 198 canvas->save(); 199 canvas->translate(SkIntToScalar(kTriSide), 1.5f * kTriSide / kRoot3); 200 canvas->drawPicture(tri); 201 canvas->restore(); 202 203 canvas->save(); 204 canvas->translate(0, 1.5f * kTriSide / kRoot3); 205 canvas->drawPicture(tri); 206 canvas->restore(); 207 208 return recorder.endRecording(); 209 } 210 211 // Create a Sierpinkski-like picture that starts with a top row with a picture 212 // that just contains a triangle. Subsequent rows take the prior row's picture, 213 // shrinks it and replicates it 3 times then draws and appropriate number of 214 // copies of it. 215 static const SkPicture* make_sierpinski_picture() { 216 SkAutoTUnref<const SkPicture> pic(make_tri_picture()); 217 218 SkPictureRecorder recorder; 219 SkRTreeFactory bbhFactory; 220 221 SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth), 222 SkIntToScalar(kPicHeight), 223 &bbhFactory, 224 SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag); 225 226 static const int kNumLevels = 4; 227 for (int i = 0; i < kNumLevels; ++i) { 228 canvas->save(); 229 canvas->translate(kPicWidth/2 - (i+1) * (kTriSide/2.0f), 0.0f); 230 for (int j = 0; j < i+1; ++j) { 231 canvas->drawPicture(pic); 232 canvas->translate(SkIntToScalar(kTriSide), 0); 233 } 234 canvas->restore(); 235 236 pic.reset(make_sub_picture(pic)); 237 238 canvas->translate(0, 1.5f * kTriSide / kRoot3); 239 } 240 241 return recorder.endRecording(); 242 } 243 244 static SkSurface* create_compat_surface(SkCanvas* canvas, int width, int height) { 245 SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); 246 247 SkSurface* surface = canvas->newSurface(info); 248 if (nullptr == surface) { 249 // picture canvas returns nullptr so fall back to raster 250 surface = SkSurface::NewRaster(info); 251 } 252 253 return surface; 254 } 255 256 // This class stores the information required to compose all the result 257 // fragments potentially generated by the MultiPictureDraw object 258 class ComposeStep { 259 public: 260 ComposeStep() : fSurf(nullptr), fX(0.0f), fY(0.0f), fPaint(nullptr) { } 261 ~ComposeStep() { 262 SkSafeUnref(fSurf); 263 delete fPaint; 264 } 265 266 SkSurface* fSurf; 267 SkScalar fX; 268 SkScalar fY; 269 SkPaint* fPaint; 270 }; 271 272 typedef void (*PFContentMtd)(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]); 273 274 // Just a single picture with no clip 275 static void no_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 276 canvas->drawPicture(pictures[0]); 277 } 278 279 // Two pictures with a rect clip on the second one 280 static void rect_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 281 canvas->drawPicture(pictures[0]); 282 283 SkRect rect = pictures[0]->cullRect(); 284 rect.inset(kInset, kInset); 285 286 canvas->clipRect(rect); 287 288 canvas->drawPicture(pictures[1]); 289 } 290 291 // Two pictures with a round rect clip on the second one 292 static void rrect_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 293 canvas->drawPicture(pictures[0]); 294 295 SkRect rect = pictures[0]->cullRect(); 296 rect.inset(kInset, kInset); 297 298 SkRRect rrect; 299 rrect.setRectXY(rect, kInset, kInset); 300 301 canvas->clipRRect(rrect); 302 303 canvas->drawPicture(pictures[1]); 304 } 305 306 // Two pictures with a clip path on the second one 307 static void path_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 308 canvas->drawPicture(pictures[0]); 309 310 // Create a hexagon centered on the middle of the hex grid 311 SkPath hex = make_hex_path((kNumHexX / 2.0f) * kHexSide, kNumHexY * kHexSide * kRoot3Over2); 312 313 canvas->clipPath(hex); 314 315 canvas->drawPicture(pictures[1]); 316 } 317 318 // Two pictures with an inverse clip path on the second one 319 static void invpath_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 320 canvas->drawPicture(pictures[0]); 321 322 // Create a hexagon centered on the middle of the hex grid 323 SkPath hex = make_hex_path((kNumHexX / 2.0f) * kHexSide, kNumHexY * kHexSide * kRoot3Over2); 324 hex.setFillType(SkPath::kInverseEvenOdd_FillType); 325 326 canvas->clipPath(hex); 327 328 canvas->drawPicture(pictures[1]); 329 } 330 331 // Reuse a single base (triangular) picture a _lot_ (rotated, scaled and translated). 332 static void sierpinski(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 333 canvas->save(); 334 canvas->drawPicture(pictures[2]); 335 336 canvas->rotate(180.0f); 337 canvas->translate(-SkIntToScalar(kPicWidth), -SkIntToScalar(kPicHeight)); 338 canvas->drawPicture(pictures[2]); 339 canvas->restore(); 340 } 341 342 static void big_layer(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) { 343 canvas->drawPicture(pictures[3]); 344 } 345 346 static const PFContentMtd gContentMthds[] = { 347 no_clip, 348 rect_clip, 349 rrect_clip, 350 path_clip, 351 invpath_clip, 352 sierpinski, 353 big_layer, 354 }; 355 356 static void create_content(SkMultiPictureDraw* mpd, PFContentMtd pfGen, 357 const SkPicture* pictures[kNumPictures], 358 SkCanvas* dest, const SkMatrix& xform) { 359 SkAutoTUnref<SkPicture> composite; 360 361 { 362 SkPictureRecorder recorder; 363 SkRTreeFactory bbhFactory; 364 365 SkCanvas* pictureCanvas = recorder.beginRecording(SkIntToScalar(kPicWidth), 366 SkIntToScalar(kPicHeight), 367 &bbhFactory, 368 SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag); 369 370 (*pfGen)(pictureCanvas, pictures); 371 372 composite.reset(recorder.endRecording()); 373 } 374 375 mpd->add(dest, composite, &xform); 376 } 377 378 typedef void(*PFLayoutMtd)(SkCanvas* finalCanvas, SkMultiPictureDraw* mpd, 379 PFContentMtd pfGen, const SkPicture* pictures[kNumPictures], 380 SkTArray<ComposeStep>* composeSteps); 381 382 // Draw the content into a single canvas 383 static void simple(SkCanvas* finalCanvas, SkMultiPictureDraw* mpd, 384 PFContentMtd pfGen, 385 const SkPicture* pictures[kNumPictures], 386 SkTArray<ComposeStep> *composeSteps) { 387 388 ComposeStep& step = composeSteps->push_back(); 389 390 step.fSurf = create_compat_surface(finalCanvas, kPicWidth, kPicHeight); 391 392 SkCanvas* subCanvas = step.fSurf->getCanvas(); 393 394 create_content(mpd, pfGen, pictures, subCanvas, SkMatrix::I()); 395 } 396 397 // Draw the content into multiple canvases/tiles 398 static void tiled(SkCanvas* finalCanvas, SkMultiPictureDraw* mpd, 399 PFContentMtd pfGen, 400 const SkPicture* pictures[kNumPictures], 401 SkTArray<ComposeStep> *composeSteps) { 402 static const int kNumTilesX = 2; 403 static const int kNumTilesY = 2; 404 static const int kTileWidth = kPicWidth / kNumTilesX; 405 static const int kTileHeight = kPicHeight / kNumTilesY; 406 407 SkASSERT(kPicWidth == kNumTilesX * kTileWidth); 408 SkASSERT(kPicHeight == kNumTilesY * kTileHeight); 409 410 static const SkColor colors[kNumTilesX][kNumTilesY] = { 411 { SK_ColorCYAN, SK_ColorMAGENTA }, 412 { SK_ColorYELLOW, SK_ColorGREEN } 413 }; 414 415 for (int y = 0; y < kNumTilesY; ++y) { 416 for (int x = 0; x < kNumTilesX; ++x) { 417 ComposeStep& step = composeSteps->push_back(); 418 419 step.fX = SkIntToScalar(x*kTileWidth); 420 step.fY = SkIntToScalar(y*kTileHeight); 421 step.fPaint = new SkPaint; 422 step.fPaint->setColorFilter( 423 SkColorFilter::CreateModeFilter(colors[x][y], SkXfermode::kModulate_Mode))->unref(); 424 425 step.fSurf = create_compat_surface(finalCanvas, kTileWidth, kTileHeight); 426 427 SkCanvas* subCanvas = step.fSurf->getCanvas(); 428 429 const SkMatrix trans = SkMatrix::MakeTrans(-SkIntToScalar(x*kTileWidth), 430 -SkIntToScalar(y*kTileHeight)); 431 432 create_content(mpd, pfGen, pictures, subCanvas, trans); 433 } 434 } 435 } 436 437 static const PFLayoutMtd gLayoutMthds[] = { simple, tiled }; 438 439 namespace skiagm { 440 /** 441 * This GM exercises the SkMultiPictureDraw object. It tests the 442 * cross product of: 443 * tiled vs. all-at-once rendering (e.g., into many or just 1 canvas) 444 * different clips (e.g., none, rect, rrect) 445 * single vs. multiple pictures (e.g., normal vs. picture-pile-style content) 446 */ 447 class MultiPictureDraw : public GM { 448 public: 449 enum Content { 450 kNoClipSingle_Content, 451 kRectClipMulti_Content, 452 kRRectClipMulti_Content, 453 kPathClipMulti_Content, 454 kInvPathClipMulti_Content, 455 kSierpinski_Content, 456 kBigLayer_Content, 457 458 kLast_Content = kBigLayer_Content 459 }; 460 461 static const int kContentCnt = kLast_Content + 1; 462 463 enum Layout { 464 kSimple_Layout, 465 kTiled_Layout, 466 467 kLast_Layout = kTiled_Layout 468 }; 469 470 static const int kLayoutCnt = kLast_Layout + 1; 471 472 MultiPictureDraw(Content content, Layout layout) : fContent(content), fLayout(layout) { 473 SkASSERT(SK_ARRAY_COUNT(gLayoutMthds) == kLayoutCnt); 474 SkASSERT(SK_ARRAY_COUNT(gContentMthds) == kContentCnt); 475 476 for (int i = 0; i < kNumPictures; ++i) { 477 fPictures[i] = nullptr; 478 } 479 } 480 481 virtual ~MultiPictureDraw() { 482 for (int i = 0; i < kNumPictures; ++i) { 483 SkSafeUnref(fPictures[i]); 484 } 485 } 486 487 protected: 488 Content fContent; 489 Layout fLayout; 490 const SkPicture* fPictures[kNumPictures]; 491 492 void onOnceBeforeDraw() override { 493 fPictures[0] = make_hex_plane_picture(SK_ColorWHITE); 494 fPictures[1] = make_hex_plane_picture(sk_tool_utils::color_to_565(SK_ColorGRAY)); 495 fPictures[2] = make_sierpinski_picture(); 496 fPictures[3] = make_single_layer_hex_plane_picture(); 497 } 498 499 void onDraw(SkCanvas* canvas) override { 500 SkMultiPictureDraw mpd; 501 SkTArray<ComposeStep> composeSteps; 502 503 // Fill up the MultiPictureDraw 504 (*gLayoutMthds[fLayout])(canvas, &mpd, 505 gContentMthds[fContent], 506 fPictures, &composeSteps); 507 508 mpd.draw(); 509 510 // Compose all the drawn canvases into the final canvas 511 for (int i = 0; i < composeSteps.count(); ++i) { 512 const ComposeStep& step = composeSteps[i]; 513 514 SkAutoTUnref<SkImage> image(step.fSurf->newImageSnapshot()); 515 516 canvas->drawImage(image, step.fX, step.fY, step.fPaint); 517 } 518 } 519 520 SkISize onISize() override { return SkISize::Make(kPicWidth, kPicHeight); } 521 522 SkString onShortName() override { 523 static const char* gContentNames[] = { 524 "noclip", "rectclip", "rrectclip", "pathclip", 525 "invpathclip", "sierpinski", "biglayer" 526 }; 527 static const char* gLayoutNames[] = { "simple", "tiled" }; 528 529 SkASSERT(SK_ARRAY_COUNT(gLayoutNames) == kLayoutCnt); 530 SkASSERT(SK_ARRAY_COUNT(gContentNames) == kContentCnt); 531 532 SkString name("multipicturedraw_"); 533 534 name.append(gContentNames[fContent]); 535 name.append("_"); 536 name.append(gLayoutNames[fLayout]); 537 return name; 538 } 539 540 bool runAsBench() const override { return true; } 541 542 private: 543 typedef GM INHERITED; 544 }; 545 546 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kNoClipSingle_Content, 547 MultiPictureDraw::kSimple_Layout);) 548 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRectClipMulti_Content, 549 MultiPictureDraw::kSimple_Layout);) 550 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRRectClipMulti_Content, 551 MultiPictureDraw::kSimple_Layout);) 552 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kPathClipMulti_Content, 553 MultiPictureDraw::kSimple_Layout);) 554 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kInvPathClipMulti_Content, 555 MultiPictureDraw::kSimple_Layout);) 556 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kSierpinski_Content, 557 MultiPictureDraw::kSimple_Layout);) 558 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kBigLayer_Content, 559 MultiPictureDraw::kSimple_Layout);) 560 561 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kNoClipSingle_Content, 562 MultiPictureDraw::kTiled_Layout);) 563 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRectClipMulti_Content, 564 MultiPictureDraw::kTiled_Layout);) 565 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRRectClipMulti_Content, 566 MultiPictureDraw::kTiled_Layout);) 567 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kPathClipMulti_Content, 568 MultiPictureDraw::kTiled_Layout);) 569 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kInvPathClipMulti_Content, 570 MultiPictureDraw::kTiled_Layout);) 571 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kSierpinski_Content, 572 MultiPictureDraw::kTiled_Layout);) 573 DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kBigLayer_Content, 574 MultiPictureDraw::kTiled_Layout);) 575 } 576
