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