ImageFilterTest.cpp 85 KB

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  1. /*
  2. * Copyright 2013 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 "include/core/SkBitmap.h"
  8. #include "include/core/SkCanvas.h"
  9. #include "include/core/SkImage.h"
  10. #include "include/core/SkPicture.h"
  11. #include "include/core/SkPictureRecorder.h"
  12. #include "include/core/SkPoint3.h"
  13. #include "include/core/SkRect.h"
  14. #include "include/core/SkSurface.h"
  15. #include "include/effects/SkArithmeticImageFilter.h"
  16. #include "include/effects/SkBlurImageFilter.h"
  17. #include "include/effects/SkColorFilterImageFilter.h"
  18. #include "include/effects/SkColorMatrixFilter.h"
  19. #include "include/effects/SkComposeImageFilter.h"
  20. #include "include/effects/SkDisplacementMapEffect.h"
  21. #include "include/effects/SkDropShadowImageFilter.h"
  22. #include "include/effects/SkGradientShader.h"
  23. #include "include/effects/SkImageSource.h"
  24. #include "include/effects/SkLightingImageFilter.h"
  25. #include "include/effects/SkMatrixConvolutionImageFilter.h"
  26. #include "include/effects/SkMergeImageFilter.h"
  27. #include "include/effects/SkMorphologyImageFilter.h"
  28. #include "include/effects/SkOffsetImageFilter.h"
  29. #include "include/effects/SkPaintImageFilter.h"
  30. #include "include/effects/SkPerlinNoiseShader.h"
  31. #include "include/effects/SkPictureImageFilter.h"
  32. #include "include/effects/SkTableColorFilter.h"
  33. #include "include/effects/SkTileImageFilter.h"
  34. #include "include/effects/SkXfermodeImageFilter.h"
  35. #include "src/core/SkImageFilterPriv.h"
  36. #include "src/core/SkReadBuffer.h"
  37. #include "src/core/SkSpecialImage.h"
  38. #include "src/core/SkSpecialSurface.h"
  39. #include "tests/Test.h"
  40. #include "tools/Resources.h"
  41. #include "tools/ToolUtils.h"
  42. #include "include/gpu/GrContext.h"
  43. #include "src/gpu/GrCaps.h"
  44. #include "src/gpu/GrContextPriv.h"
  45. static const int kBitmapSize = 4;
  46. namespace {
  47. class MatrixTestImageFilter : public SkImageFilter {
  48. public:
  49. static sk_sp<SkImageFilter> Make(skiatest::Reporter* reporter,
  50. const SkMatrix& expectedMatrix) {
  51. return sk_sp<SkImageFilter>(new MatrixTestImageFilter(reporter, expectedMatrix));
  52. }
  53. protected:
  54. sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context& ctx,
  55. SkIPoint* offset) const override {
  56. REPORTER_ASSERT(fReporter, ctx.ctm() == fExpectedMatrix);
  57. offset->fX = offset->fY = 0;
  58. return sk_ref_sp<SkSpecialImage>(source);
  59. }
  60. void flatten(SkWriteBuffer& buffer) const override {
  61. SkDEBUGFAIL("Should never get here");
  62. }
  63. private:
  64. SK_FLATTENABLE_HOOKS(MatrixTestImageFilter)
  65. MatrixTestImageFilter(skiatest::Reporter* reporter, const SkMatrix& expectedMatrix)
  66. : INHERITED(nullptr, 0, nullptr)
  67. , fReporter(reporter)
  68. , fExpectedMatrix(expectedMatrix) {
  69. }
  70. skiatest::Reporter* fReporter;
  71. SkMatrix fExpectedMatrix;
  72. typedef SkImageFilter INHERITED;
  73. };
  74. class FailImageFilter : public SkImageFilter {
  75. public:
  76. FailImageFilter() : SkImageFilter(nullptr, 0, nullptr) { }
  77. sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source,
  78. const Context& ctx,
  79. SkIPoint* offset) const override {
  80. return nullptr;
  81. }
  82. SK_FLATTENABLE_HOOKS(FailImageFilter)
  83. private:
  84. typedef SkImageFilter INHERITED;
  85. };
  86. sk_sp<SkFlattenable> FailImageFilter::CreateProc(SkReadBuffer& buffer) {
  87. SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
  88. return sk_sp<SkFlattenable>(new FailImageFilter());
  89. }
  90. void draw_gradient_circle(SkCanvas* canvas, int width, int height) {
  91. SkScalar x = SkIntToScalar(width / 2);
  92. SkScalar y = SkIntToScalar(height / 2);
  93. SkScalar radius = SkMinScalar(x, y) * 0.8f;
  94. canvas->clear(0x00000000);
  95. SkColor colors[2];
  96. colors[0] = SK_ColorWHITE;
  97. colors[1] = SK_ColorBLACK;
  98. sk_sp<SkShader> shader(
  99. SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2,
  100. SkTileMode::kClamp)
  101. );
  102. SkPaint paint;
  103. paint.setShader(shader);
  104. canvas->drawCircle(x, y, radius, paint);
  105. }
  106. SkBitmap make_gradient_circle(int width, int height) {
  107. SkBitmap bitmap;
  108. bitmap.allocN32Pixels(width, height);
  109. SkCanvas canvas(bitmap);
  110. draw_gradient_circle(&canvas, width, height);
  111. return bitmap;
  112. }
  113. class FilterList {
  114. public:
  115. FilterList(sk_sp<SkImageFilter> input, const SkImageFilter::CropRect* cropRect = nullptr) {
  116. SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
  117. const SkScalar five = SkIntToScalar(5);
  118. {
  119. sk_sp<SkColorFilter> cf(SkColorFilters::Blend(SK_ColorRED,
  120. SkBlendMode::kSrcIn));
  121. this->addFilter("color filter",
  122. SkColorFilterImageFilter::Make(std::move(cf), input, cropRect));
  123. }
  124. {
  125. sk_sp<SkImage> gradientImage(SkImage::MakeFromBitmap(make_gradient_circle(64, 64)));
  126. sk_sp<SkImageFilter> gradientSource(SkImageSource::Make(std::move(gradientImage)));
  127. this->addFilter("displacement map",
  128. SkDisplacementMapEffect::Make(SkDisplacementMapEffect::kR_ChannelSelectorType,
  129. SkDisplacementMapEffect::kB_ChannelSelectorType,
  130. 20.0f,
  131. std::move(gradientSource), input, cropRect));
  132. }
  133. this->addFilter("blur", SkBlurImageFilter::Make(SK_Scalar1,
  134. SK_Scalar1,
  135. input,
  136. cropRect));
  137. this->addFilter("drop shadow", SkDropShadowImageFilter::Make(
  138. SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_ColorGREEN,
  139. SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
  140. input, cropRect));
  141. this->addFilter("diffuse lighting",
  142. SkLightingImageFilter::MakePointLitDiffuse(location, SK_ColorGREEN, 0, 0,
  143. input, cropRect));
  144. this->addFilter("specular lighting",
  145. SkLightingImageFilter::MakePointLitSpecular(location, SK_ColorGREEN, 0, 0, 0,
  146. input, cropRect));
  147. {
  148. SkScalar kernel[9] = {
  149. SkIntToScalar(1), SkIntToScalar(1), SkIntToScalar(1),
  150. SkIntToScalar(1), SkIntToScalar(-7), SkIntToScalar(1),
  151. SkIntToScalar(1), SkIntToScalar(1), SkIntToScalar(1),
  152. };
  153. const SkISize kernelSize = SkISize::Make(3, 3);
  154. const SkScalar gain = SK_Scalar1, bias = 0;
  155. // This filter needs a saveLayer bc it is in repeat mode
  156. this->addFilter("matrix convolution",
  157. SkMatrixConvolutionImageFilter::Make(
  158. kernelSize, kernel, gain, bias, SkIPoint::Make(1, 1),
  159. SkMatrixConvolutionImageFilter::kRepeat_TileMode, false,
  160. input, cropRect),
  161. true);
  162. }
  163. this->addFilter("merge", SkMergeImageFilter::Make(input, input, cropRect));
  164. {
  165. SkPaint greenColorShaderPaint;
  166. greenColorShaderPaint.setShader(SkShaders::Color(SK_ColorGREEN));
  167. SkImageFilter::CropRect leftSideCropRect(SkRect::MakeXYWH(0, 0, 32, 64));
  168. sk_sp<SkImageFilter> paintFilterLeft(SkPaintImageFilter::Make(greenColorShaderPaint,
  169. &leftSideCropRect));
  170. SkImageFilter::CropRect rightSideCropRect(SkRect::MakeXYWH(32, 0, 32, 64));
  171. sk_sp<SkImageFilter> paintFilterRight(SkPaintImageFilter::Make(greenColorShaderPaint,
  172. &rightSideCropRect));
  173. this->addFilter("merge with disjoint inputs", SkMergeImageFilter::Make(
  174. std::move(paintFilterLeft), std::move(paintFilterRight), cropRect));
  175. }
  176. this->addFilter("offset",
  177. SkOffsetImageFilter::Make(SK_Scalar1, SK_Scalar1, input,
  178. cropRect));
  179. this->addFilter("dilate", SkDilateImageFilter::Make(3, 2, input, cropRect));
  180. this->addFilter("erode", SkErodeImageFilter::Make(2, 3, input, cropRect));
  181. this->addFilter("tile", SkTileImageFilter::Make(
  182. SkRect::MakeXYWH(0, 0, 50, 50),
  183. cropRect ? cropRect->rect() : SkRect::MakeXYWH(0, 0, 100, 100),
  184. input));
  185. if (!cropRect) {
  186. SkMatrix matrix;
  187. matrix.setTranslate(SK_Scalar1, SK_Scalar1);
  188. matrix.postRotate(SkIntToScalar(45), SK_Scalar1, SK_Scalar1);
  189. this->addFilter("matrix",
  190. SkImageFilter::MakeMatrixFilter(matrix, kLow_SkFilterQuality, input));
  191. }
  192. {
  193. sk_sp<SkImageFilter> blur(SkBlurImageFilter::Make(five, five, input));
  194. this->addFilter("blur and offset", SkOffsetImageFilter::Make(five, five,
  195. std::move(blur),
  196. cropRect));
  197. }
  198. {
  199. SkPictureRecorder recorder;
  200. SkCanvas* recordingCanvas = recorder.beginRecording(64, 64);
  201. SkPaint greenPaint;
  202. greenPaint.setColor(SK_ColorGREEN);
  203. recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 30, 20)), greenPaint);
  204. sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
  205. sk_sp<SkImageFilter> pictureFilter(SkPictureImageFilter::Make(std::move(picture)));
  206. this->addFilter("picture and blur", SkBlurImageFilter::Make(five, five,
  207. std::move(pictureFilter),
  208. cropRect));
  209. }
  210. {
  211. SkPaint paint;
  212. paint.setShader(SkPerlinNoiseShader::MakeTurbulence(SK_Scalar1, SK_Scalar1, 1, 0));
  213. sk_sp<SkImageFilter> paintFilter(SkPaintImageFilter::Make(paint));
  214. this->addFilter("paint and blur", SkBlurImageFilter::Make(five, five,
  215. std::move(paintFilter),
  216. cropRect));
  217. }
  218. this->addFilter("xfermode", SkXfermodeImageFilter::Make(SkBlendMode::kSrc, input, input,
  219. cropRect));
  220. }
  221. int count() const { return fFilters.count(); }
  222. SkImageFilter* getFilter(int index) const { return fFilters[index].fFilter.get(); }
  223. const char* getName(int index) const { return fFilters[index].fName; }
  224. bool needsSaveLayer(int index) const { return fFilters[index].fNeedsSaveLayer; }
  225. private:
  226. struct Filter {
  227. Filter() : fName(nullptr), fNeedsSaveLayer(false) {}
  228. Filter(const char* name, sk_sp<SkImageFilter> filter, bool needsSaveLayer)
  229. : fName(name)
  230. , fFilter(std::move(filter))
  231. , fNeedsSaveLayer(needsSaveLayer) {
  232. }
  233. const char* fName;
  234. sk_sp<SkImageFilter> fFilter;
  235. bool fNeedsSaveLayer;
  236. };
  237. void addFilter(const char* name, sk_sp<SkImageFilter> filter, bool needsSaveLayer = false) {
  238. fFilters.push_back(Filter(name, std::move(filter), needsSaveLayer));
  239. }
  240. SkTArray<Filter> fFilters;
  241. };
  242. class FixedBoundsImageFilter : public SkImageFilter {
  243. public:
  244. FixedBoundsImageFilter(const SkIRect& bounds)
  245. : SkImageFilter(nullptr, 0, nullptr), fBounds(bounds) {}
  246. private:
  247. Factory getFactory() const override { return nullptr; }
  248. const char* getTypeName() const override { return nullptr; }
  249. sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* src, const Context&,
  250. SkIPoint* offset) const override {
  251. return nullptr;
  252. }
  253. SkIRect onFilterBounds(const SkIRect&, const SkMatrix&,
  254. MapDirection, const SkIRect*) const override {
  255. return fBounds;
  256. }
  257. SkIRect fBounds;
  258. };
  259. }
  260. sk_sp<SkFlattenable> MatrixTestImageFilter::CreateProc(SkReadBuffer& buffer) {
  261. SkDEBUGFAIL("Should never get here");
  262. return nullptr;
  263. }
  264. static sk_sp<SkImage> make_small_image() {
  265. auto surface(SkSurface::MakeRasterN32Premul(kBitmapSize, kBitmapSize));
  266. SkCanvas* canvas = surface->getCanvas();
  267. canvas->clear(0x00000000);
  268. SkPaint darkPaint;
  269. darkPaint.setColor(0xFF804020);
  270. SkPaint lightPaint;
  271. lightPaint.setColor(0xFF244484);
  272. const int i = kBitmapSize / 4;
  273. for (int y = 0; y < kBitmapSize; y += i) {
  274. for (int x = 0; x < kBitmapSize; x += i) {
  275. canvas->save();
  276. canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
  277. canvas->drawRect(SkRect::MakeXYWH(0, 0,
  278. SkIntToScalar(i),
  279. SkIntToScalar(i)), darkPaint);
  280. canvas->drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
  281. 0,
  282. SkIntToScalar(i),
  283. SkIntToScalar(i)), lightPaint);
  284. canvas->drawRect(SkRect::MakeXYWH(0,
  285. SkIntToScalar(i),
  286. SkIntToScalar(i),
  287. SkIntToScalar(i)), lightPaint);
  288. canvas->drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
  289. SkIntToScalar(i),
  290. SkIntToScalar(i),
  291. SkIntToScalar(i)), darkPaint);
  292. canvas->restore();
  293. }
  294. }
  295. return surface->makeImageSnapshot();
  296. }
  297. static sk_sp<SkImageFilter> make_scale(float amount, sk_sp<SkImageFilter> input) {
  298. float s = amount;
  299. float matrix[20] = { s, 0, 0, 0, 0,
  300. 0, s, 0, 0, 0,
  301. 0, 0, s, 0, 0,
  302. 0, 0, 0, s, 0 };
  303. sk_sp<SkColorFilter> filter(SkColorFilters::Matrix(matrix));
  304. return SkColorFilterImageFilter::Make(std::move(filter), std::move(input));
  305. }
  306. static sk_sp<SkImageFilter> make_grayscale(sk_sp<SkImageFilter> input,
  307. const SkImageFilter::CropRect* cropRect) {
  308. float matrix[20];
  309. memset(matrix, 0, 20 * sizeof(float));
  310. matrix[0] = matrix[5] = matrix[10] = 0.2126f;
  311. matrix[1] = matrix[6] = matrix[11] = 0.7152f;
  312. matrix[2] = matrix[7] = matrix[12] = 0.0722f;
  313. matrix[18] = 1.0f;
  314. sk_sp<SkColorFilter> filter(SkColorFilters::Matrix(matrix));
  315. return SkColorFilterImageFilter::Make(std::move(filter), std::move(input), cropRect);
  316. }
  317. static sk_sp<SkImageFilter> make_blue(sk_sp<SkImageFilter> input,
  318. const SkImageFilter::CropRect* cropRect) {
  319. sk_sp<SkColorFilter> filter(SkColorFilters::Blend(SK_ColorBLUE, SkBlendMode::kSrcIn));
  320. return SkColorFilterImageFilter::Make(std::move(filter), std::move(input), cropRect);
  321. }
  322. static sk_sp<SkSpecialSurface> create_empty_special_surface(GrContext* context, int widthHeight) {
  323. if (context) {
  324. return SkSpecialSurface::MakeRenderTarget(context, widthHeight, widthHeight,
  325. GrColorType::kRGBA_8888, nullptr);
  326. } else {
  327. const SkImageInfo info = SkImageInfo::MakeN32(widthHeight, widthHeight,
  328. kOpaque_SkAlphaType);
  329. return SkSpecialSurface::MakeRaster(info);
  330. }
  331. }
  332. static sk_sp<SkSurface> create_surface(GrContext* context, int width, int height) {
  333. const SkImageInfo info = SkImageInfo::MakeN32(width, height, kOpaque_SkAlphaType);
  334. if (context) {
  335. return SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info);
  336. } else {
  337. return SkSurface::MakeRaster(info);
  338. }
  339. }
  340. static sk_sp<SkSpecialImage> create_empty_special_image(GrContext* context, int widthHeight) {
  341. sk_sp<SkSpecialSurface> surf(create_empty_special_surface(context, widthHeight));
  342. SkASSERT(surf);
  343. SkCanvas* canvas = surf->getCanvas();
  344. SkASSERT(canvas);
  345. canvas->clear(0x0);
  346. return surf->makeImageSnapshot();
  347. }
  348. DEF_TEST(ImageFilter, reporter) {
  349. {
  350. // Check that a color matrix filter followed by a color matrix filter
  351. // concatenates into a single filter.
  352. sk_sp<SkImageFilter> doubleBrightness(make_scale(2.0f, nullptr));
  353. sk_sp<SkImageFilter> halfBrightness(make_scale(0.5f, std::move(doubleBrightness)));
  354. REPORTER_ASSERT(reporter, nullptr == halfBrightness->getInput(0));
  355. SkColorFilter* cf;
  356. REPORTER_ASSERT(reporter, halfBrightness->asColorFilter(&cf));
  357. cf->unref();
  358. }
  359. {
  360. // Check that a color filter image filter without a crop rect can be
  361. // expressed as a color filter.
  362. sk_sp<SkImageFilter> gray(make_grayscale(nullptr, nullptr));
  363. REPORTER_ASSERT(reporter, true == gray->asColorFilter(nullptr));
  364. }
  365. {
  366. // Check that a colorfilterimage filter without a crop rect but with an input
  367. // that is another colorfilterimage can be expressed as a colorfilter (composed).
  368. sk_sp<SkImageFilter> mode(make_blue(nullptr, nullptr));
  369. sk_sp<SkImageFilter> gray(make_grayscale(std::move(mode), nullptr));
  370. REPORTER_ASSERT(reporter, true == gray->asColorFilter(nullptr));
  371. }
  372. {
  373. // Test that if we exceed the limit of what ComposeColorFilter can combine, we still
  374. // can build the DAG and won't assert if we call asColorFilter.
  375. sk_sp<SkImageFilter> filter(make_blue(nullptr, nullptr));
  376. const int kWayTooManyForComposeColorFilter = 100;
  377. for (int i = 0; i < kWayTooManyForComposeColorFilter; ++i) {
  378. filter = make_blue(filter, nullptr);
  379. // the first few of these will succeed, but after we hit the internal limit,
  380. // it will then return false.
  381. (void)filter->asColorFilter(nullptr);
  382. }
  383. }
  384. {
  385. // Check that a color filter image filter with a crop rect cannot
  386. // be expressed as a color filter.
  387. SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(0, 0, 100, 100));
  388. sk_sp<SkImageFilter> grayWithCrop(make_grayscale(nullptr, &cropRect));
  389. REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(nullptr));
  390. }
  391. {
  392. // Check that two non-commutative matrices are concatenated in
  393. // the correct order.
  394. float blueToRedMatrix[20] = { 0 };
  395. blueToRedMatrix[2] = blueToRedMatrix[18] = 1;
  396. float redToGreenMatrix[20] = { 0 };
  397. redToGreenMatrix[5] = redToGreenMatrix[18] = 1;
  398. sk_sp<SkColorFilter> blueToRed(SkColorFilters::Matrix(blueToRedMatrix));
  399. sk_sp<SkImageFilter> filter1(SkColorFilterImageFilter::Make(std::move(blueToRed),
  400. nullptr));
  401. sk_sp<SkColorFilter> redToGreen(SkColorFilters::Matrix(redToGreenMatrix));
  402. sk_sp<SkImageFilter> filter2(SkColorFilterImageFilter::Make(std::move(redToGreen),
  403. std::move(filter1)));
  404. SkBitmap result;
  405. result.allocN32Pixels(kBitmapSize, kBitmapSize);
  406. SkPaint paint;
  407. paint.setColor(SK_ColorBLUE);
  408. paint.setImageFilter(std::move(filter2));
  409. SkCanvas canvas(result);
  410. canvas.clear(0x0);
  411. SkRect rect = SkRect::Make(SkIRect::MakeWH(kBitmapSize, kBitmapSize));
  412. canvas.drawRect(rect, paint);
  413. uint32_t pixel = *result.getAddr32(0, 0);
  414. // The result here should be green, since we have effectively shifted blue to green.
  415. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  416. }
  417. {
  418. // Tests pass by not asserting
  419. sk_sp<SkImage> image(make_small_image());
  420. SkBitmap result;
  421. result.allocN32Pixels(kBitmapSize, kBitmapSize);
  422. {
  423. // This tests for :
  424. // 1 ) location at (0,0,1)
  425. SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
  426. // 2 ) location and target at same value
  427. SkPoint3 target = SkPoint3::Make(location.fX, location.fY, location.fZ);
  428. // 3 ) large negative specular exponent value
  429. SkScalar specularExponent = -1000;
  430. sk_sp<SkImageFilter> bmSrc(SkImageSource::Make(std::move(image)));
  431. SkPaint paint;
  432. paint.setImageFilter(SkLightingImageFilter::MakeSpotLitSpecular(
  433. location, target, specularExponent, 180,
  434. 0xFFFFFFFF, SK_Scalar1, SK_Scalar1, SK_Scalar1,
  435. std::move(bmSrc)));
  436. SkCanvas canvas(result);
  437. SkRect r = SkRect::MakeWH(SkIntToScalar(kBitmapSize),
  438. SkIntToScalar(kBitmapSize));
  439. canvas.drawRect(r, paint);
  440. }
  441. }
  442. }
  443. static void test_crop_rects(skiatest::Reporter* reporter,
  444. GrContext* context) {
  445. // Check that all filters offset to their absolute crop rect,
  446. // unaffected by the input crop rect.
  447. // Tests pass by not asserting.
  448. sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
  449. SkASSERT(srcImg);
  450. SkImageFilter::CropRect inputCropRect(SkRect::MakeXYWH(8, 13, 80, 80));
  451. SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(20, 30, 60, 60));
  452. sk_sp<SkImageFilter> input(make_grayscale(nullptr, &inputCropRect));
  453. FilterList filters(input, &cropRect);
  454. for (int i = 0; i < filters.count(); ++i) {
  455. SkImageFilter* filter = filters.getFilter(i);
  456. SkIPoint offset;
  457. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  458. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
  459. sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
  460. REPORTER_ASSERT(reporter, resultImg, filters.getName(i));
  461. REPORTER_ASSERT(reporter, offset.fX == 20 && offset.fY == 30, filters.getName(i));
  462. }
  463. }
  464. static void test_negative_blur_sigma(skiatest::Reporter* reporter,
  465. GrContext* context) {
  466. // Check that SkBlurImageFilter will accept a negative sigma, either in
  467. // the given arguments or after CTM application.
  468. const int width = 32, height = 32;
  469. const SkScalar five = SkIntToScalar(5);
  470. sk_sp<SkImageFilter> positiveFilter(SkBlurImageFilter::Make(five, five, nullptr));
  471. sk_sp<SkImageFilter> negativeFilter(SkBlurImageFilter::Make(-five, five, nullptr));
  472. SkBitmap gradient = make_gradient_circle(width, height);
  473. sk_sp<SkSpecialImage> imgSrc(SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(width, height),
  474. gradient));
  475. SkIPoint offset;
  476. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  477. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(32, 32), nullptr, noColorSpace);
  478. sk_sp<SkSpecialImage> positiveResult1(positiveFilter->filterImage(imgSrc.get(), ctx, &offset));
  479. REPORTER_ASSERT(reporter, positiveResult1);
  480. sk_sp<SkSpecialImage> negativeResult1(negativeFilter->filterImage(imgSrc.get(), ctx, &offset));
  481. REPORTER_ASSERT(reporter, negativeResult1);
  482. SkMatrix negativeScale;
  483. negativeScale.setScale(-SK_Scalar1, SK_Scalar1);
  484. SkImageFilter::Context negativeCTX(negativeScale, SkIRect::MakeWH(32, 32), nullptr,
  485. noColorSpace);
  486. sk_sp<SkSpecialImage> negativeResult2(positiveFilter->filterImage(imgSrc.get(),
  487. negativeCTX,
  488. &offset));
  489. REPORTER_ASSERT(reporter, negativeResult2);
  490. sk_sp<SkSpecialImage> positiveResult2(negativeFilter->filterImage(imgSrc.get(),
  491. negativeCTX,
  492. &offset));
  493. REPORTER_ASSERT(reporter, positiveResult2);
  494. SkBitmap positiveResultBM1, positiveResultBM2;
  495. SkBitmap negativeResultBM1, negativeResultBM2;
  496. REPORTER_ASSERT(reporter, positiveResult1->getROPixels(&positiveResultBM1));
  497. REPORTER_ASSERT(reporter, positiveResult2->getROPixels(&positiveResultBM2));
  498. REPORTER_ASSERT(reporter, negativeResult1->getROPixels(&negativeResultBM1));
  499. REPORTER_ASSERT(reporter, negativeResult2->getROPixels(&negativeResultBM2));
  500. for (int y = 0; y < height; y++) {
  501. int diffs = memcmp(positiveResultBM1.getAddr32(0, y),
  502. negativeResultBM1.getAddr32(0, y),
  503. positiveResultBM1.rowBytes());
  504. REPORTER_ASSERT(reporter, !diffs);
  505. if (diffs) {
  506. break;
  507. }
  508. diffs = memcmp(positiveResultBM1.getAddr32(0, y),
  509. negativeResultBM2.getAddr32(0, y),
  510. positiveResultBM1.rowBytes());
  511. REPORTER_ASSERT(reporter, !diffs);
  512. if (diffs) {
  513. break;
  514. }
  515. diffs = memcmp(positiveResultBM1.getAddr32(0, y),
  516. positiveResultBM2.getAddr32(0, y),
  517. positiveResultBM1.rowBytes());
  518. REPORTER_ASSERT(reporter, !diffs);
  519. if (diffs) {
  520. break;
  521. }
  522. }
  523. }
  524. DEF_TEST(ImageFilterNegativeBlurSigma, reporter) {
  525. test_negative_blur_sigma(reporter, nullptr);
  526. }
  527. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterNegativeBlurSigma_Gpu, reporter, ctxInfo) {
  528. test_negative_blur_sigma(reporter, ctxInfo.grContext());
  529. }
  530. static void test_zero_blur_sigma(skiatest::Reporter* reporter, GrContext* context) {
  531. // Check that SkBlurImageFilter with a zero sigma and a non-zero srcOffset works correctly.
  532. SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(5, 0, 5, 10)));
  533. sk_sp<SkImageFilter> input(SkOffsetImageFilter::Make(0, 0, nullptr, &cropRect));
  534. sk_sp<SkImageFilter> filter(SkBlurImageFilter::Make(0, 0, std::move(input), &cropRect));
  535. sk_sp<SkSpecialSurface> surf(create_empty_special_surface(context, 10));
  536. surf->getCanvas()->clear(SK_ColorGREEN);
  537. sk_sp<SkSpecialImage> image(surf->makeImageSnapshot());
  538. SkIPoint offset;
  539. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  540. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(32, 32), nullptr, noColorSpace);
  541. sk_sp<SkSpecialImage> result(filter->filterImage(image.get(), ctx, &offset));
  542. REPORTER_ASSERT(reporter, offset.fX == 5 && offset.fY == 0);
  543. REPORTER_ASSERT(reporter, result);
  544. REPORTER_ASSERT(reporter, result->width() == 5 && result->height() == 10);
  545. SkBitmap resultBM;
  546. REPORTER_ASSERT(reporter, result->getROPixels(&resultBM));
  547. for (int y = 0; y < resultBM.height(); y++) {
  548. for (int x = 0; x < resultBM.width(); x++) {
  549. bool diff = *resultBM.getAddr32(x, y) != SK_ColorGREEN;
  550. REPORTER_ASSERT(reporter, !diff);
  551. if (diff) {
  552. break;
  553. }
  554. }
  555. }
  556. }
  557. DEF_TEST(ImageFilterZeroBlurSigma, reporter) {
  558. test_zero_blur_sigma(reporter, nullptr);
  559. }
  560. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterZeroBlurSigma_Gpu, reporter, ctxInfo) {
  561. test_zero_blur_sigma(reporter, ctxInfo.grContext());
  562. }
  563. // Tests that, even when an upstream filter has returned null (due to failure or clipping), a
  564. // downstream filter that affects transparent black still does so even with a nullptr input.
  565. static void test_fail_affects_transparent_black(skiatest::Reporter* reporter, GrContext* context) {
  566. sk_sp<FailImageFilter> failFilter(new FailImageFilter());
  567. sk_sp<SkSpecialImage> source(create_empty_special_image(context, 5));
  568. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  569. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeXYWH(0, 0, 1, 1), nullptr, noColorSpace);
  570. sk_sp<SkColorFilter> green(SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrc));
  571. SkASSERT(green->affectsTransparentBlack());
  572. sk_sp<SkImageFilter> greenFilter(SkColorFilterImageFilter::Make(std::move(green),
  573. std::move(failFilter)));
  574. SkIPoint offset;
  575. sk_sp<SkSpecialImage> result(greenFilter->filterImage(source.get(), ctx, &offset));
  576. REPORTER_ASSERT(reporter, nullptr != result.get());
  577. if (result.get()) {
  578. SkBitmap resultBM;
  579. REPORTER_ASSERT(reporter, result->getROPixels(&resultBM));
  580. REPORTER_ASSERT(reporter, *resultBM.getAddr32(0, 0) == SK_ColorGREEN);
  581. }
  582. }
  583. DEF_TEST(ImageFilterFailAffectsTransparentBlack, reporter) {
  584. test_fail_affects_transparent_black(reporter, nullptr);
  585. }
  586. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterFailAffectsTransparentBlack_Gpu, reporter, ctxInfo) {
  587. test_fail_affects_transparent_black(reporter, ctxInfo.grContext());
  588. }
  589. DEF_TEST(ImageFilterDrawTiled, reporter) {
  590. // Check that all filters when drawn tiled (with subsequent clip rects) exactly
  591. // match the same filters drawn with a single full-canvas bitmap draw.
  592. // Tests pass by not asserting.
  593. FilterList filters(nullptr);
  594. SkBitmap untiledResult, tiledResult;
  595. const int width = 64, height = 64;
  596. untiledResult.allocN32Pixels(width, height);
  597. tiledResult.allocN32Pixels(width, height);
  598. SkCanvas tiledCanvas(tiledResult);
  599. SkCanvas untiledCanvas(untiledResult);
  600. const int tileSize = 8;
  601. SkPaint textPaint;
  602. textPaint.setColor(SK_ColorWHITE);
  603. SkFont font(ToolUtils::create_portable_typeface(), height);
  604. const char* text = "ABC";
  605. const SkScalar yPos = SkIntToScalar(height);
  606. for (int scale = 1; scale <= 2; ++scale) {
  607. for (int i = 0; i < filters.count(); ++i) {
  608. SkPaint combinedPaint;
  609. combinedPaint.setColor(SK_ColorWHITE);
  610. combinedPaint.setImageFilter(sk_ref_sp(filters.getFilter(i)));
  611. untiledCanvas.clear(SK_ColorTRANSPARENT);
  612. untiledCanvas.save();
  613. untiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
  614. untiledCanvas.drawString(text, 0, yPos, font, combinedPaint);
  615. untiledCanvas.restore();
  616. tiledCanvas.clear(SK_ColorTRANSPARENT);
  617. for (int y = 0; y < height; y += tileSize) {
  618. for (int x = 0; x < width; x += tileSize) {
  619. tiledCanvas.save();
  620. const SkRect clipRect = SkRect::MakeXYWH(x, y, tileSize, tileSize);
  621. tiledCanvas.clipRect(clipRect);
  622. if (filters.needsSaveLayer(i)) {
  623. const SkRect layerBounds = SkRect::MakeWH(width, height);
  624. tiledCanvas.saveLayer(&layerBounds, &combinedPaint);
  625. tiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
  626. tiledCanvas.drawString(text, 0, yPos, font, textPaint);
  627. tiledCanvas.restore();
  628. } else {
  629. tiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
  630. tiledCanvas.drawString(text, 0, yPos, font, combinedPaint);
  631. }
  632. tiledCanvas.restore();
  633. }
  634. }
  635. if (!ToolUtils::equal_pixels(untiledResult, tiledResult)) {
  636. REPORTER_ASSERT(reporter, false, filters.getName(i));
  637. break;
  638. }
  639. }
  640. }
  641. }
  642. static void draw_saveLayer_picture(int width, int height, int tileSize,
  643. SkBBHFactory* factory, SkBitmap* result) {
  644. SkMatrix matrix;
  645. matrix.setTranslate(SkIntToScalar(50), 0);
  646. sk_sp<SkColorFilter> cf(SkColorFilters::Blend(SK_ColorWHITE, SkBlendMode::kSrc));
  647. sk_sp<SkImageFilter> cfif(SkColorFilterImageFilter::Make(std::move(cf), nullptr));
  648. sk_sp<SkImageFilter> imageFilter(SkImageFilter::MakeMatrixFilter(matrix,
  649. kNone_SkFilterQuality,
  650. std::move(cfif)));
  651. SkPaint paint;
  652. paint.setImageFilter(std::move(imageFilter));
  653. SkPictureRecorder recorder;
  654. SkRect bounds = SkRect::Make(SkIRect::MakeXYWH(0, 0, 50, 50));
  655. SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(width),
  656. SkIntToScalar(height),
  657. factory, 0);
  658. recordingCanvas->translate(-55, 0);
  659. recordingCanvas->saveLayer(&bounds, &paint);
  660. recordingCanvas->restore();
  661. sk_sp<SkPicture> picture1(recorder.finishRecordingAsPicture());
  662. result->allocN32Pixels(width, height);
  663. SkCanvas canvas(*result);
  664. canvas.clear(0);
  665. canvas.clipRect(SkRect::Make(SkIRect::MakeWH(tileSize, tileSize)));
  666. canvas.drawPicture(picture1.get());
  667. }
  668. DEF_TEST(ImageFilterDrawMatrixBBH, reporter) {
  669. // Check that matrix filter when drawn tiled with BBH exactly
  670. // matches the same thing drawn without BBH.
  671. // Tests pass by not asserting.
  672. const int width = 200, height = 200;
  673. const int tileSize = 100;
  674. SkBitmap result1, result2;
  675. SkRTreeFactory factory;
  676. draw_saveLayer_picture(width, height, tileSize, &factory, &result1);
  677. draw_saveLayer_picture(width, height, tileSize, nullptr, &result2);
  678. for (int y = 0; y < height; y++) {
  679. int diffs = memcmp(result1.getAddr32(0, y), result2.getAddr32(0, y), result1.rowBytes());
  680. REPORTER_ASSERT(reporter, !diffs);
  681. if (diffs) {
  682. break;
  683. }
  684. }
  685. }
  686. static sk_sp<SkImageFilter> make_blur(sk_sp<SkImageFilter> input) {
  687. return SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1, std::move(input));
  688. }
  689. static sk_sp<SkImageFilter> make_drop_shadow(sk_sp<SkImageFilter> input) {
  690. return SkDropShadowImageFilter::Make(
  691. SkIntToScalar(100), SkIntToScalar(100),
  692. SkIntToScalar(10), SkIntToScalar(10),
  693. SK_ColorBLUE, SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
  694. std::move(input));
  695. }
  696. DEF_TEST(ImageFilterBlurThenShadowBounds, reporter) {
  697. sk_sp<SkImageFilter> filter1(make_blur(nullptr));
  698. sk_sp<SkImageFilter> filter2(make_drop_shadow(std::move(filter1)));
  699. SkIRect bounds = SkIRect::MakeXYWH(0, 0, 100, 100);
  700. SkIRect expectedBounds = SkIRect::MakeXYWH(-133, -133, 236, 236);
  701. bounds = filter2->filterBounds(bounds, SkMatrix::I(),
  702. SkImageFilter::kReverse_MapDirection, &bounds);
  703. REPORTER_ASSERT(reporter, bounds == expectedBounds);
  704. }
  705. DEF_TEST(ImageFilterShadowThenBlurBounds, reporter) {
  706. sk_sp<SkImageFilter> filter1(make_drop_shadow(nullptr));
  707. sk_sp<SkImageFilter> filter2(make_blur(std::move(filter1)));
  708. SkIRect bounds = SkIRect::MakeXYWH(0, 0, 100, 100);
  709. SkIRect expectedBounds = SkIRect::MakeXYWH(-133, -133, 236, 236);
  710. bounds = filter2->filterBounds(bounds, SkMatrix::I(),
  711. SkImageFilter::kReverse_MapDirection, &bounds);
  712. REPORTER_ASSERT(reporter, bounds == expectedBounds);
  713. }
  714. DEF_TEST(ImageFilterDilateThenBlurBounds, reporter) {
  715. sk_sp<SkImageFilter> filter1(SkDilateImageFilter::Make(2, 2, nullptr));
  716. sk_sp<SkImageFilter> filter2(make_drop_shadow(std::move(filter1)));
  717. SkIRect bounds = SkIRect::MakeXYWH(0, 0, 100, 100);
  718. SkIRect expectedBounds = SkIRect::MakeXYWH(-132, -132, 234, 234);
  719. bounds = filter2->filterBounds(bounds, SkMatrix::I(),
  720. SkImageFilter::kReverse_MapDirection, &bounds);
  721. REPORTER_ASSERT(reporter, bounds == expectedBounds);
  722. }
  723. DEF_TEST(ImageFilterScaledBlurRadius, reporter) {
  724. // Each blur should spread 3*sigma, so 3 for the blur and 30 for the shadow
  725. // (before the CTM). Bounds should be computed correctly in the presence of
  726. // a (possibly negative) scale.
  727. sk_sp<SkImageFilter> blur(make_blur(nullptr));
  728. sk_sp<SkImageFilter> dropShadow(make_drop_shadow(nullptr));
  729. {
  730. // Uniform scale by 2.
  731. SkMatrix scaleMatrix;
  732. scaleMatrix.setScale(2, 2);
  733. SkIRect bounds = SkIRect::MakeLTRB(0, 0, 200, 200);
  734. SkIRect expectedBlurBounds = SkIRect::MakeLTRB(-6, -6, 206, 206);
  735. SkIRect blurBounds = blur->filterBounds(
  736. bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
  737. REPORTER_ASSERT(reporter, blurBounds == expectedBlurBounds);
  738. SkIRect reverseBlurBounds = blur->filterBounds(
  739. bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
  740. REPORTER_ASSERT(reporter, reverseBlurBounds == expectedBlurBounds);
  741. SkIRect expectedShadowBounds = SkIRect::MakeLTRB(0, 0, 460, 460);
  742. SkIRect shadowBounds = dropShadow->filterBounds(
  743. bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
  744. REPORTER_ASSERT(reporter, shadowBounds == expectedShadowBounds);
  745. SkIRect expectedReverseShadowBounds =
  746. SkIRect::MakeLTRB(-260, -260, 200, 200);
  747. SkIRect reverseShadowBounds = dropShadow->filterBounds(
  748. bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
  749. REPORTER_ASSERT(reporter,
  750. reverseShadowBounds == expectedReverseShadowBounds);
  751. }
  752. {
  753. // Vertical flip.
  754. SkMatrix scaleMatrix;
  755. scaleMatrix.setScale(1, -1);
  756. SkIRect bounds = SkIRect::MakeLTRB(0, -100, 100, 0);
  757. SkIRect expectedBlurBounds = SkIRect::MakeLTRB(-3, -103, 103, 3);
  758. SkIRect blurBounds = blur->filterBounds(
  759. bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
  760. REPORTER_ASSERT(reporter, blurBounds == expectedBlurBounds);
  761. SkIRect reverseBlurBounds = blur->filterBounds(
  762. bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
  763. REPORTER_ASSERT(reporter, reverseBlurBounds == expectedBlurBounds);
  764. SkIRect expectedShadowBounds = SkIRect::MakeLTRB(0, -230, 230, 0);
  765. SkIRect shadowBounds = dropShadow->filterBounds(
  766. bounds, scaleMatrix, SkImageFilter::kForward_MapDirection, nullptr);
  767. REPORTER_ASSERT(reporter, shadowBounds == expectedShadowBounds);
  768. SkIRect expectedReverseShadowBounds =
  769. SkIRect::MakeLTRB(-130, -100, 100, 130);
  770. SkIRect reverseShadowBounds = dropShadow->filterBounds(
  771. bounds, scaleMatrix, SkImageFilter::kReverse_MapDirection, &bounds);
  772. REPORTER_ASSERT(reporter,
  773. reverseShadowBounds == expectedReverseShadowBounds);
  774. }
  775. }
  776. DEF_TEST(ImageFilterComposedBlurFastBounds, reporter) {
  777. sk_sp<SkImageFilter> filter1(make_blur(nullptr));
  778. sk_sp<SkImageFilter> filter2(make_blur(nullptr));
  779. sk_sp<SkImageFilter> composedFilter(SkComposeImageFilter::Make(std::move(filter1),
  780. std::move(filter2)));
  781. SkRect boundsSrc = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
  782. SkRect expectedBounds = SkRect::MakeXYWH(
  783. SkIntToScalar(-6), SkIntToScalar(-6), SkIntToScalar(112), SkIntToScalar(112));
  784. SkRect boundsDst = composedFilter->computeFastBounds(boundsSrc);
  785. REPORTER_ASSERT(reporter, boundsDst == expectedBounds);
  786. }
  787. DEF_TEST(ImageFilterUnionBounds, reporter) {
  788. sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(50, 0, nullptr));
  789. // Regardless of which order they appear in, the image filter bounds should
  790. // be combined correctly.
  791. {
  792. sk_sp<SkImageFilter> composite(SkXfermodeImageFilter::Make(SkBlendMode::kSrcOver, offset));
  793. SkRect bounds = SkRect::MakeWH(100, 100);
  794. // Intentionally aliasing here, as that's what the real callers do.
  795. bounds = composite->computeFastBounds(bounds);
  796. REPORTER_ASSERT(reporter, bounds == SkRect::MakeWH(150, 100));
  797. }
  798. {
  799. sk_sp<SkImageFilter> composite(SkXfermodeImageFilter::Make(SkBlendMode::kSrcOver, nullptr,
  800. offset, nullptr));
  801. SkRect bounds = SkRect::MakeWH(100, 100);
  802. // Intentionally aliasing here, as that's what the real callers do.
  803. bounds = composite->computeFastBounds(bounds);
  804. REPORTER_ASSERT(reporter, bounds == SkRect::MakeWH(150, 100));
  805. }
  806. }
  807. static void test_imagefilter_merge_result_size(skiatest::Reporter* reporter, GrContext* context) {
  808. SkBitmap greenBM;
  809. greenBM.allocN32Pixels(20, 20);
  810. greenBM.eraseColor(SK_ColorGREEN);
  811. sk_sp<SkImage> greenImage(SkImage::MakeFromBitmap(greenBM));
  812. sk_sp<SkImageFilter> source(SkImageSource::Make(std::move(greenImage)));
  813. sk_sp<SkImageFilter> merge(SkMergeImageFilter::Make(source, source));
  814. sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 1));
  815. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  816. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeXYWH(0, 0, 100, 100), nullptr,
  817. noColorSpace);
  818. SkIPoint offset;
  819. sk_sp<SkSpecialImage> resultImg(merge->filterImage(srcImg.get(), ctx, &offset));
  820. REPORTER_ASSERT(reporter, resultImg);
  821. REPORTER_ASSERT(reporter, resultImg->width() == 20 && resultImg->height() == 20);
  822. }
  823. DEF_TEST(ImageFilterMergeResultSize, reporter) {
  824. test_imagefilter_merge_result_size(reporter, nullptr);
  825. }
  826. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterMergeResultSize_Gpu, reporter, ctxInfo) {
  827. test_imagefilter_merge_result_size(reporter, ctxInfo.grContext());
  828. }
  829. static void draw_blurred_rect(SkCanvas* canvas) {
  830. SkPaint filterPaint;
  831. filterPaint.setColor(SK_ColorWHITE);
  832. filterPaint.setImageFilter(SkBlurImageFilter::Make(SkIntToScalar(8), 0, nullptr));
  833. canvas->saveLayer(nullptr, &filterPaint);
  834. SkPaint whitePaint;
  835. whitePaint.setColor(SK_ColorWHITE);
  836. canvas->drawRect(SkRect::Make(SkIRect::MakeWH(4, 4)), whitePaint);
  837. canvas->restore();
  838. }
  839. static void draw_picture_clipped(SkCanvas* canvas, const SkRect& clipRect, const SkPicture* picture) {
  840. canvas->save();
  841. canvas->clipRect(clipRect);
  842. canvas->drawPicture(picture);
  843. canvas->restore();
  844. }
  845. DEF_TEST(ImageFilterDrawTiledBlurRTree, reporter) {
  846. // Check that the blur filter when recorded with RTree acceleration,
  847. // and drawn tiled (with subsequent clip rects) exactly
  848. // matches the same filter drawn with without RTree acceleration.
  849. // This tests that the "bleed" from the blur into the otherwise-blank
  850. // tiles is correctly rendered.
  851. // Tests pass by not asserting.
  852. int width = 16, height = 8;
  853. SkBitmap result1, result2;
  854. result1.allocN32Pixels(width, height);
  855. result2.allocN32Pixels(width, height);
  856. SkCanvas canvas1(result1);
  857. SkCanvas canvas2(result2);
  858. int tileSize = 8;
  859. canvas1.clear(0);
  860. canvas2.clear(0);
  861. SkRTreeFactory factory;
  862. SkPictureRecorder recorder1, recorder2;
  863. // The only difference between these two pictures is that one has RTree aceleration.
  864. SkCanvas* recordingCanvas1 = recorder1.beginRecording(SkIntToScalar(width),
  865. SkIntToScalar(height),
  866. nullptr, 0);
  867. SkCanvas* recordingCanvas2 = recorder2.beginRecording(SkIntToScalar(width),
  868. SkIntToScalar(height),
  869. &factory, 0);
  870. draw_blurred_rect(recordingCanvas1);
  871. draw_blurred_rect(recordingCanvas2);
  872. sk_sp<SkPicture> picture1(recorder1.finishRecordingAsPicture());
  873. sk_sp<SkPicture> picture2(recorder2.finishRecordingAsPicture());
  874. for (int y = 0; y < height; y += tileSize) {
  875. for (int x = 0; x < width; x += tileSize) {
  876. SkRect tileRect = SkRect::Make(SkIRect::MakeXYWH(x, y, tileSize, tileSize));
  877. draw_picture_clipped(&canvas1, tileRect, picture1.get());
  878. draw_picture_clipped(&canvas2, tileRect, picture2.get());
  879. }
  880. }
  881. for (int y = 0; y < height; y++) {
  882. int diffs = memcmp(result1.getAddr32(0, y), result2.getAddr32(0, y), result1.rowBytes());
  883. REPORTER_ASSERT(reporter, !diffs);
  884. if (diffs) {
  885. break;
  886. }
  887. }
  888. }
  889. DEF_TEST(ImageFilterMatrixConvolution, reporter) {
  890. // Check that a 1x3 filter does not cause a spurious assert.
  891. SkScalar kernel[3] = {
  892. SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
  893. };
  894. SkISize kernelSize = SkISize::Make(1, 3);
  895. SkScalar gain = SK_Scalar1, bias = 0;
  896. SkIPoint kernelOffset = SkIPoint::Make(0, 0);
  897. sk_sp<SkImageFilter> filter(SkMatrixConvolutionImageFilter::Make(
  898. kernelSize, kernel,
  899. gain, bias, kernelOffset,
  900. SkMatrixConvolutionImageFilter::kRepeat_TileMode,
  901. false, nullptr));
  902. SkBitmap result;
  903. int width = 16, height = 16;
  904. result.allocN32Pixels(width, height);
  905. SkCanvas canvas(result);
  906. canvas.clear(0);
  907. SkPaint paint;
  908. paint.setImageFilter(std::move(filter));
  909. SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
  910. canvas.drawRect(rect, paint);
  911. }
  912. DEF_TEST(ImageFilterMatrixConvolutionBorder, reporter) {
  913. // Check that a filter with borders outside the target bounds
  914. // does not crash.
  915. SkScalar kernel[3] = {
  916. 0, 0, 0,
  917. };
  918. SkISize kernelSize = SkISize::Make(3, 1);
  919. SkScalar gain = SK_Scalar1, bias = 0;
  920. SkIPoint kernelOffset = SkIPoint::Make(2, 0);
  921. sk_sp<SkImageFilter> filter(SkMatrixConvolutionImageFilter::Make(
  922. kernelSize, kernel, gain, bias, kernelOffset,
  923. SkMatrixConvolutionImageFilter::kClamp_TileMode,
  924. true, nullptr));
  925. SkBitmap result;
  926. int width = 10, height = 10;
  927. result.allocN32Pixels(width, height);
  928. SkCanvas canvas(result);
  929. canvas.clear(0);
  930. SkPaint filterPaint;
  931. filterPaint.setImageFilter(std::move(filter));
  932. SkRect bounds = SkRect::MakeWH(1, 10);
  933. SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
  934. SkPaint rectPaint;
  935. canvas.saveLayer(&bounds, &filterPaint);
  936. canvas.drawRect(rect, rectPaint);
  937. canvas.restore();
  938. }
  939. static void test_big_kernel(skiatest::Reporter* reporter, GrContext* context) {
  940. // Check that a kernel that is too big for the GPU still works
  941. SkScalar identityKernel[49] = {
  942. 0, 0, 0, 0, 0, 0, 0,
  943. 0, 0, 0, 0, 0, 0, 0,
  944. 0, 0, 0, 0, 0, 0, 0,
  945. 0, 0, 0, 1, 0, 0, 0,
  946. 0, 0, 0, 0, 0, 0, 0,
  947. 0, 0, 0, 0, 0, 0, 0,
  948. 0, 0, 0, 0, 0, 0, 0
  949. };
  950. SkISize kernelSize = SkISize::Make(7, 7);
  951. SkScalar gain = SK_Scalar1, bias = 0;
  952. SkIPoint kernelOffset = SkIPoint::Make(0, 0);
  953. sk_sp<SkImageFilter> filter(SkMatrixConvolutionImageFilter::Make(
  954. kernelSize, identityKernel, gain, bias, kernelOffset,
  955. SkMatrixConvolutionImageFilter::kClamp_TileMode,
  956. true, nullptr));
  957. sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
  958. SkASSERT(srcImg);
  959. SkIPoint offset;
  960. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  961. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
  962. sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
  963. REPORTER_ASSERT(reporter, resultImg);
  964. REPORTER_ASSERT(reporter, SkToBool(context) == resultImg->isTextureBacked());
  965. REPORTER_ASSERT(reporter, resultImg->width() == 100 && resultImg->height() == 100);
  966. REPORTER_ASSERT(reporter, offset.fX == 0 && offset.fY == 0);
  967. }
  968. DEF_TEST(ImageFilterMatrixConvolutionBigKernel, reporter) {
  969. test_big_kernel(reporter, nullptr);
  970. }
  971. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterMatrixConvolutionBigKernel_Gpu,
  972. reporter, ctxInfo) {
  973. test_big_kernel(reporter, ctxInfo.grContext());
  974. }
  975. DEF_TEST(ImageFilterCropRect, reporter) {
  976. test_crop_rects(reporter, nullptr);
  977. }
  978. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterCropRect_Gpu, reporter, ctxInfo) {
  979. test_crop_rects(reporter, ctxInfo.grContext());
  980. }
  981. DEF_TEST(ImageFilterMatrix, reporter) {
  982. SkBitmap temp;
  983. temp.allocN32Pixels(100, 100);
  984. SkCanvas canvas(temp);
  985. canvas.scale(SkIntToScalar(2), SkIntToScalar(2));
  986. SkMatrix expectedMatrix = canvas.getTotalMatrix();
  987. SkRTreeFactory factory;
  988. SkPictureRecorder recorder;
  989. SkCanvas* recordingCanvas = recorder.beginRecording(100, 100, &factory, 0);
  990. SkPaint paint;
  991. paint.setImageFilter(MatrixTestImageFilter::Make(reporter, expectedMatrix));
  992. recordingCanvas->saveLayer(nullptr, &paint);
  993. SkPaint solidPaint;
  994. solidPaint.setColor(0xFFFFFFFF);
  995. recordingCanvas->save();
  996. recordingCanvas->scale(SkIntToScalar(10), SkIntToScalar(10));
  997. recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(100, 100)), solidPaint);
  998. recordingCanvas->restore(); // scale
  999. recordingCanvas->restore(); // saveLayer
  1000. canvas.drawPicture(recorder.finishRecordingAsPicture());
  1001. }
  1002. static void test_clipped_picture_imagefilter(skiatest::Reporter* reporter, GrContext* context) {
  1003. sk_sp<SkPicture> picture;
  1004. {
  1005. SkRTreeFactory factory;
  1006. SkPictureRecorder recorder;
  1007. SkCanvas* recordingCanvas = recorder.beginRecording(1, 1, &factory, 0);
  1008. // Create an SkPicture which simply draws a green 1x1 rectangle.
  1009. SkPaint greenPaint;
  1010. greenPaint.setColor(SK_ColorGREEN);
  1011. recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(1, 1)), greenPaint);
  1012. picture = recorder.finishRecordingAsPicture();
  1013. }
  1014. sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 2));
  1015. sk_sp<SkImageFilter> imageFilter(SkPictureImageFilter::Make(picture));
  1016. SkIPoint offset;
  1017. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  1018. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeXYWH(1, 1, 1, 1), nullptr, noColorSpace);
  1019. sk_sp<SkSpecialImage> resultImage(imageFilter->filterImage(srcImg.get(), ctx, &offset));
  1020. REPORTER_ASSERT(reporter, !resultImage);
  1021. }
  1022. DEF_TEST(ImageFilterClippedPictureImageFilter, reporter) {
  1023. test_clipped_picture_imagefilter(reporter, nullptr);
  1024. }
  1025. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterClippedPictureImageFilter_Gpu, reporter, ctxInfo) {
  1026. test_clipped_picture_imagefilter(reporter, ctxInfo.grContext());
  1027. }
  1028. DEF_TEST(ImageFilterEmptySaveLayer, reporter) {
  1029. // Even when there's an empty saveLayer()/restore(), ensure that an image
  1030. // filter or color filter which affects transparent black still draws.
  1031. SkBitmap bitmap;
  1032. bitmap.allocN32Pixels(10, 10);
  1033. SkCanvas canvas(bitmap);
  1034. SkRTreeFactory factory;
  1035. SkPictureRecorder recorder;
  1036. sk_sp<SkColorFilter> green(SkColorFilters::Blend(SK_ColorGREEN,
  1037. SkBlendMode::kSrc));
  1038. sk_sp<SkImageFilter> imageFilter(SkColorFilterImageFilter::Make(green, nullptr));
  1039. SkPaint imageFilterPaint;
  1040. imageFilterPaint.setImageFilter(std::move(imageFilter));
  1041. SkPaint colorFilterPaint;
  1042. colorFilterPaint.setColorFilter(green);
  1043. SkRect bounds = SkRect::MakeWH(10, 10);
  1044. SkCanvas* recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
  1045. recordingCanvas->saveLayer(&bounds, &imageFilterPaint);
  1046. recordingCanvas->restore();
  1047. sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
  1048. canvas.clear(0);
  1049. canvas.drawPicture(picture);
  1050. uint32_t pixel = *bitmap.getAddr32(0, 0);
  1051. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1052. recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
  1053. recordingCanvas->saveLayer(nullptr, &imageFilterPaint);
  1054. recordingCanvas->restore();
  1055. sk_sp<SkPicture> picture2(recorder.finishRecordingAsPicture());
  1056. canvas.clear(0);
  1057. canvas.drawPicture(picture2);
  1058. pixel = *bitmap.getAddr32(0, 0);
  1059. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1060. recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
  1061. recordingCanvas->saveLayer(&bounds, &colorFilterPaint);
  1062. recordingCanvas->restore();
  1063. sk_sp<SkPicture> picture3(recorder.finishRecordingAsPicture());
  1064. canvas.clear(0);
  1065. canvas.drawPicture(picture3);
  1066. pixel = *bitmap.getAddr32(0, 0);
  1067. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1068. }
  1069. static void test_huge_blur(SkCanvas* canvas, skiatest::Reporter* reporter) {
  1070. SkBitmap bitmap;
  1071. bitmap.allocN32Pixels(100, 100);
  1072. bitmap.eraseARGB(0, 0, 0, 0);
  1073. // Check that a blur with an insane radius does not crash or assert.
  1074. SkPaint paint;
  1075. paint.setImageFilter(SkBlurImageFilter::Make(SkIntToScalar(1<<30),
  1076. SkIntToScalar(1<<30),
  1077. nullptr));
  1078. canvas->drawBitmap(bitmap, 0, 0, &paint);
  1079. }
  1080. DEF_TEST(HugeBlurImageFilter, reporter) {
  1081. SkBitmap temp;
  1082. temp.allocN32Pixels(100, 100);
  1083. SkCanvas canvas(temp);
  1084. test_huge_blur(&canvas, reporter);
  1085. }
  1086. DEF_TEST(ImageFilterMatrixConvolutionSanityTest, reporter) {
  1087. SkScalar kernel[1] = { 0 };
  1088. SkScalar gain = SK_Scalar1, bias = 0;
  1089. SkIPoint kernelOffset = SkIPoint::Make(1, 1);
  1090. // Check that an enormous (non-allocatable) kernel gives a nullptr filter.
  1091. sk_sp<SkImageFilter> conv(SkMatrixConvolutionImageFilter::Make(
  1092. SkISize::Make(1<<30, 1<<30),
  1093. kernel,
  1094. gain,
  1095. bias,
  1096. kernelOffset,
  1097. SkMatrixConvolutionImageFilter::kRepeat_TileMode,
  1098. false,
  1099. nullptr));
  1100. REPORTER_ASSERT(reporter, nullptr == conv.get());
  1101. // Check that a nullptr kernel gives a nullptr filter.
  1102. conv = SkMatrixConvolutionImageFilter::Make(
  1103. SkISize::Make(1, 1),
  1104. nullptr,
  1105. gain,
  1106. bias,
  1107. kernelOffset,
  1108. SkMatrixConvolutionImageFilter::kRepeat_TileMode,
  1109. false,
  1110. nullptr);
  1111. REPORTER_ASSERT(reporter, nullptr == conv.get());
  1112. // Check that a kernel width < 1 gives a nullptr filter.
  1113. conv = SkMatrixConvolutionImageFilter::Make(
  1114. SkISize::Make(0, 1),
  1115. kernel,
  1116. gain,
  1117. bias,
  1118. kernelOffset,
  1119. SkMatrixConvolutionImageFilter::kRepeat_TileMode,
  1120. false,
  1121. nullptr);
  1122. REPORTER_ASSERT(reporter, nullptr == conv.get());
  1123. // Check that kernel height < 1 gives a nullptr filter.
  1124. conv = SkMatrixConvolutionImageFilter::Make(
  1125. SkISize::Make(1, -1),
  1126. kernel,
  1127. gain,
  1128. bias,
  1129. kernelOffset,
  1130. SkMatrixConvolutionImageFilter::kRepeat_TileMode,
  1131. false,
  1132. nullptr);
  1133. REPORTER_ASSERT(reporter, nullptr == conv.get());
  1134. }
  1135. static void test_xfermode_cropped_input(SkSurface* surf, skiatest::Reporter* reporter) {
  1136. auto canvas = surf->getCanvas();
  1137. canvas->clear(0);
  1138. SkBitmap bitmap;
  1139. bitmap.allocN32Pixels(1, 1);
  1140. bitmap.eraseARGB(255, 255, 255, 255);
  1141. sk_sp<SkColorFilter> green(SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrcIn));
  1142. sk_sp<SkImageFilter> greenFilter(SkColorFilterImageFilter::Make(green, nullptr));
  1143. SkImageFilter::CropRect cropRect(SkRect::MakeEmpty());
  1144. sk_sp<SkImageFilter> croppedOut(SkColorFilterImageFilter::Make(green, nullptr, &cropRect));
  1145. // Check that an xfermode image filter whose input has been cropped out still draws the other
  1146. // input. Also check that drawing with both inputs cropped out doesn't cause a GPU warning.
  1147. SkBlendMode mode = SkBlendMode::kSrcOver;
  1148. sk_sp<SkImageFilter> xfermodeNoFg(SkXfermodeImageFilter::Make(mode, greenFilter,
  1149. croppedOut, nullptr));
  1150. sk_sp<SkImageFilter> xfermodeNoBg(SkXfermodeImageFilter::Make(mode, croppedOut,
  1151. greenFilter, nullptr));
  1152. sk_sp<SkImageFilter> xfermodeNoFgNoBg(SkXfermodeImageFilter::Make(mode, croppedOut,
  1153. croppedOut, nullptr));
  1154. SkPaint paint;
  1155. paint.setImageFilter(std::move(xfermodeNoFg));
  1156. canvas->drawBitmap(bitmap, 0, 0, &paint); // drawSprite
  1157. uint32_t pixel;
  1158. SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
  1159. surf->readPixels(info, &pixel, 4, 0, 0);
  1160. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1161. paint.setImageFilter(std::move(xfermodeNoBg));
  1162. canvas->drawBitmap(bitmap, 0, 0, &paint); // drawSprite
  1163. surf->readPixels(info, &pixel, 4, 0, 0);
  1164. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1165. paint.setImageFilter(std::move(xfermodeNoFgNoBg));
  1166. canvas->drawBitmap(bitmap, 0, 0, &paint); // drawSprite
  1167. surf->readPixels(info, &pixel, 4, 0, 0);
  1168. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1169. }
  1170. DEF_TEST(ImageFilterNestedSaveLayer, reporter) {
  1171. SkBitmap temp;
  1172. temp.allocN32Pixels(50, 50);
  1173. SkCanvas canvas(temp);
  1174. canvas.clear(0x0);
  1175. SkBitmap bitmap;
  1176. bitmap.allocN32Pixels(10, 10);
  1177. bitmap.eraseColor(SK_ColorGREEN);
  1178. SkMatrix matrix;
  1179. matrix.setScale(SkIntToScalar(2), SkIntToScalar(2));
  1180. matrix.postTranslate(SkIntToScalar(-20), SkIntToScalar(-20));
  1181. sk_sp<SkImageFilter> matrixFilter(
  1182. SkImageFilter::MakeMatrixFilter(matrix, kLow_SkFilterQuality, nullptr));
  1183. // Test that saveLayer() with a filter nested inside another saveLayer() applies the
  1184. // correct offset to the filter matrix.
  1185. SkRect bounds1 = SkRect::MakeXYWH(10, 10, 30, 30);
  1186. canvas.saveLayer(&bounds1, nullptr);
  1187. SkPaint filterPaint;
  1188. filterPaint.setImageFilter(std::move(matrixFilter));
  1189. SkRect bounds2 = SkRect::MakeXYWH(20, 20, 10, 10);
  1190. canvas.saveLayer(&bounds2, &filterPaint);
  1191. SkPaint greenPaint;
  1192. greenPaint.setColor(SK_ColorGREEN);
  1193. canvas.drawRect(bounds2, greenPaint);
  1194. canvas.restore();
  1195. canvas.restore();
  1196. SkPaint strokePaint;
  1197. strokePaint.setStyle(SkPaint::kStroke_Style);
  1198. strokePaint.setColor(SK_ColorRED);
  1199. SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
  1200. uint32_t pixel;
  1201. temp.readPixels(info, &pixel, 4, 25, 25);
  1202. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1203. // Test that drawSprite() with a filter nested inside a saveLayer() applies the
  1204. // correct offset to the filter matrix.
  1205. canvas.clear(0x0);
  1206. temp.readPixels(info, &pixel, 4, 25, 25);
  1207. canvas.saveLayer(&bounds1, nullptr);
  1208. canvas.drawBitmap(bitmap, 20, 20, &filterPaint); // drawSprite
  1209. canvas.restore();
  1210. temp.readPixels(info, &pixel, 4, 25, 25);
  1211. REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
  1212. }
  1213. DEF_TEST(XfermodeImageFilterCroppedInput, reporter) {
  1214. test_xfermode_cropped_input(SkSurface::MakeRasterN32Premul(100, 100).get(), reporter);
  1215. }
  1216. static void test_composed_imagefilter_offset(skiatest::Reporter* reporter, GrContext* context) {
  1217. sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
  1218. SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(1, 0, 20, 20));
  1219. sk_sp<SkImageFilter> offsetFilter(SkOffsetImageFilter::Make(0, 0, nullptr, &cropRect));
  1220. sk_sp<SkImageFilter> blurFilter(SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1,
  1221. nullptr, &cropRect));
  1222. sk_sp<SkImageFilter> composedFilter(SkComposeImageFilter::Make(std::move(blurFilter),
  1223. std::move(offsetFilter)));
  1224. SkIPoint offset;
  1225. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  1226. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
  1227. sk_sp<SkSpecialImage> resultImg(composedFilter->filterImage(srcImg.get(), ctx, &offset));
  1228. REPORTER_ASSERT(reporter, resultImg);
  1229. REPORTER_ASSERT(reporter, offset.fX == 1 && offset.fY == 0);
  1230. }
  1231. DEF_TEST(ComposedImageFilterOffset, reporter) {
  1232. test_composed_imagefilter_offset(reporter, nullptr);
  1233. }
  1234. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ComposedImageFilterOffset_Gpu, reporter, ctxInfo) {
  1235. test_composed_imagefilter_offset(reporter, ctxInfo.grContext());
  1236. }
  1237. static void test_composed_imagefilter_bounds(skiatest::Reporter* reporter, GrContext* context) {
  1238. // The bounds passed to the inner filter must be filtered by the outer
  1239. // filter, so that the inner filter produces the pixels that the outer
  1240. // filter requires as input. This matters if the outer filter moves pixels.
  1241. // Here, accounting for the outer offset is necessary so that the green
  1242. // pixels of the picture are not clipped.
  1243. SkPictureRecorder recorder;
  1244. SkCanvas* recordingCanvas = recorder.beginRecording(SkRect::MakeWH(200, 100));
  1245. recordingCanvas->clipRect(SkRect::MakeXYWH(100, 0, 100, 100));
  1246. recordingCanvas->clear(SK_ColorGREEN);
  1247. sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
  1248. sk_sp<SkImageFilter> pictureFilter(SkPictureImageFilter::Make(picture));
  1249. SkImageFilter::CropRect cropRect(SkRect::MakeWH(100, 100));
  1250. sk_sp<SkImageFilter> offsetFilter(SkOffsetImageFilter::Make(-100, 0, nullptr, &cropRect));
  1251. sk_sp<SkImageFilter> composedFilter(SkComposeImageFilter::Make(std::move(offsetFilter),
  1252. std::move(pictureFilter)));
  1253. sk_sp<SkSpecialImage> sourceImage(create_empty_special_image(context, 100));
  1254. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  1255. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
  1256. SkIPoint offset;
  1257. sk_sp<SkSpecialImage> result(composedFilter->filterImage(sourceImage.get(), ctx, &offset));
  1258. REPORTER_ASSERT(reporter, offset.isZero());
  1259. REPORTER_ASSERT(reporter, result);
  1260. REPORTER_ASSERT(reporter, result->subset().size() == SkISize::Make(100, 100));
  1261. SkBitmap resultBM;
  1262. REPORTER_ASSERT(reporter, result->getROPixels(&resultBM));
  1263. REPORTER_ASSERT(reporter, resultBM.getColor(50, 50) == SK_ColorGREEN);
  1264. }
  1265. DEF_TEST(ComposedImageFilterBounds, reporter) {
  1266. test_composed_imagefilter_bounds(reporter, nullptr);
  1267. }
  1268. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ComposedImageFilterBounds_Gpu, reporter, ctxInfo) {
  1269. test_composed_imagefilter_bounds(reporter, ctxInfo.grContext());
  1270. }
  1271. static void test_partial_crop_rect(skiatest::Reporter* reporter, GrContext* context) {
  1272. sk_sp<SkSpecialImage> srcImg(create_empty_special_image(context, 100));
  1273. SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(100, 0, 20, 30),
  1274. SkImageFilter::CropRect::kHasWidth_CropEdge | SkImageFilter::CropRect::kHasHeight_CropEdge);
  1275. sk_sp<SkImageFilter> filter(make_grayscale(nullptr, &cropRect));
  1276. SkIPoint offset;
  1277. SkImageFilter::OutputProperties noColorSpace(kN32_SkColorType, nullptr);
  1278. SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeWH(100, 100), nullptr, noColorSpace);
  1279. sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
  1280. REPORTER_ASSERT(reporter, resultImg);
  1281. REPORTER_ASSERT(reporter, offset.fX == 0);
  1282. REPORTER_ASSERT(reporter, offset.fY == 0);
  1283. REPORTER_ASSERT(reporter, resultImg->width() == 20);
  1284. REPORTER_ASSERT(reporter, resultImg->height() == 30);
  1285. }
  1286. DEF_TEST(ImageFilterPartialCropRect, reporter) {
  1287. test_partial_crop_rect(reporter, nullptr);
  1288. }
  1289. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterPartialCropRect_Gpu, reporter, ctxInfo) {
  1290. test_partial_crop_rect(reporter, ctxInfo.grContext());
  1291. }
  1292. DEF_TEST(ImageFilterCanComputeFastBounds, reporter) {
  1293. {
  1294. SkPoint3 location = SkPoint3::Make(0, 0, SK_Scalar1);
  1295. sk_sp<SkImageFilter> lighting(SkLightingImageFilter::MakePointLitDiffuse(location,
  1296. SK_ColorGREEN,
  1297. 0, 0, nullptr));
  1298. REPORTER_ASSERT(reporter, !lighting->canComputeFastBounds());
  1299. }
  1300. {
  1301. sk_sp<SkImageFilter> gray(make_grayscale(nullptr, nullptr));
  1302. REPORTER_ASSERT(reporter, gray->canComputeFastBounds());
  1303. {
  1304. SkColorFilter* grayCF;
  1305. REPORTER_ASSERT(reporter, gray->asAColorFilter(&grayCF));
  1306. REPORTER_ASSERT(reporter, !grayCF->affectsTransparentBlack());
  1307. grayCF->unref();
  1308. }
  1309. REPORTER_ASSERT(reporter, gray->canComputeFastBounds());
  1310. sk_sp<SkImageFilter> grayBlur(SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1,
  1311. std::move(gray)));
  1312. REPORTER_ASSERT(reporter, grayBlur->canComputeFastBounds());
  1313. }
  1314. {
  1315. float greenMatrix[20] = { 0, 0, 0, 0, 0,
  1316. 0, 0, 0, 0, 1.0f/255,
  1317. 0, 0, 0, 0, 0,
  1318. 0, 0, 0, 0, 1.0f/255
  1319. };
  1320. sk_sp<SkColorFilter> greenCF(SkColorFilters::Matrix(greenMatrix));
  1321. sk_sp<SkImageFilter> green(SkColorFilterImageFilter::Make(greenCF, nullptr));
  1322. REPORTER_ASSERT(reporter, greenCF->affectsTransparentBlack());
  1323. REPORTER_ASSERT(reporter, !green->canComputeFastBounds());
  1324. sk_sp<SkImageFilter> greenBlur(SkBlurImageFilter::Make(SK_Scalar1, SK_Scalar1,
  1325. std::move(green)));
  1326. REPORTER_ASSERT(reporter, !greenBlur->canComputeFastBounds());
  1327. }
  1328. uint8_t allOne[256], identity[256];
  1329. for (int i = 0; i < 256; ++i) {
  1330. identity[i] = i;
  1331. allOne[i] = 255;
  1332. }
  1333. sk_sp<SkColorFilter> identityCF(SkTableColorFilter::MakeARGB(identity, identity,
  1334. identity, allOne));
  1335. sk_sp<SkImageFilter> identityFilter(SkColorFilterImageFilter::Make(identityCF, nullptr));
  1336. REPORTER_ASSERT(reporter, !identityCF->affectsTransparentBlack());
  1337. REPORTER_ASSERT(reporter, identityFilter->canComputeFastBounds());
  1338. sk_sp<SkColorFilter> forceOpaqueCF(SkTableColorFilter::MakeARGB(allOne, identity,
  1339. identity, identity));
  1340. sk_sp<SkImageFilter> forceOpaque(SkColorFilterImageFilter::Make(forceOpaqueCF, nullptr));
  1341. REPORTER_ASSERT(reporter, forceOpaqueCF->affectsTransparentBlack());
  1342. REPORTER_ASSERT(reporter, !forceOpaque->canComputeFastBounds());
  1343. }
  1344. // Verify that SkImageSource survives serialization
  1345. DEF_TEST(ImageFilterImageSourceSerialization, reporter) {
  1346. auto surface(SkSurface::MakeRasterN32Premul(10, 10));
  1347. surface->getCanvas()->clear(SK_ColorGREEN);
  1348. sk_sp<SkImage> image(surface->makeImageSnapshot());
  1349. sk_sp<SkImageFilter> filter(SkImageSource::Make(std::move(image)));
  1350. sk_sp<SkData> data(filter->serialize());
  1351. sk_sp<SkImageFilter> unflattenedFilter = SkImageFilter::Deserialize(data->data(), data->size());
  1352. REPORTER_ASSERT(reporter, unflattenedFilter);
  1353. SkBitmap bm;
  1354. bm.allocN32Pixels(10, 10);
  1355. bm.eraseColor(SK_ColorBLUE);
  1356. SkPaint paint;
  1357. paint.setColor(SK_ColorRED);
  1358. paint.setImageFilter(unflattenedFilter);
  1359. SkCanvas canvas(bm);
  1360. canvas.drawRect(SkRect::MakeWH(10, 10), paint);
  1361. REPORTER_ASSERT(reporter, *bm.getAddr32(0, 0) == SkPreMultiplyColor(SK_ColorGREEN));
  1362. }
  1363. DEF_TEST(ImageFilterImageSourceUninitialized, r) {
  1364. sk_sp<SkData> data(GetResourceAsData("crbug769134.fil"));
  1365. if (!data) {
  1366. return;
  1367. }
  1368. sk_sp<SkImageFilter> unflattenedFilter = SkImageFilter::Deserialize(data->data(), data->size());
  1369. // This will fail. More importantly, msan will verify that we did not
  1370. // compare against uninitialized memory.
  1371. REPORTER_ASSERT(r, !unflattenedFilter);
  1372. }
  1373. static void test_large_blur_input(skiatest::Reporter* reporter, SkCanvas* canvas) {
  1374. SkBitmap largeBmp;
  1375. int largeW = 5000;
  1376. int largeH = 5000;
  1377. // If we're GPU-backed make the bitmap too large to be converted into a texture.
  1378. if (GrContext* ctx = canvas->getGrContext()) {
  1379. largeW = ctx->priv().caps()->maxTextureSize() + 1;
  1380. }
  1381. largeBmp.allocN32Pixels(largeW, largeH);
  1382. largeBmp.eraseColor(0);
  1383. if (!largeBmp.getPixels()) {
  1384. ERRORF(reporter, "Failed to allocate large bmp.");
  1385. return;
  1386. }
  1387. sk_sp<SkImage> largeImage(SkImage::MakeFromBitmap(largeBmp));
  1388. if (!largeImage) {
  1389. ERRORF(reporter, "Failed to create large image.");
  1390. return;
  1391. }
  1392. sk_sp<SkImageFilter> largeSource(SkImageSource::Make(std::move(largeImage)));
  1393. if (!largeSource) {
  1394. ERRORF(reporter, "Failed to create large SkImageSource.");
  1395. return;
  1396. }
  1397. sk_sp<SkImageFilter> blur(SkBlurImageFilter::Make(10.f, 10.f, std::move(largeSource)));
  1398. if (!blur) {
  1399. ERRORF(reporter, "Failed to create SkBlurImageFilter.");
  1400. return;
  1401. }
  1402. SkPaint paint;
  1403. paint.setImageFilter(std::move(blur));
  1404. // This should not crash (http://crbug.com/570479).
  1405. canvas->drawRect(SkRect::MakeIWH(largeW, largeH), paint);
  1406. }
  1407. DEF_TEST(ImageFilterBlurLargeImage, reporter) {
  1408. auto surface(SkSurface::MakeRaster(SkImageInfo::MakeN32Premul(100, 100)));
  1409. test_large_blur_input(reporter, surface->getCanvas());
  1410. }
  1411. static void test_make_with_filter(skiatest::Reporter* reporter, GrContext* context) {
  1412. sk_sp<SkSurface> surface(create_surface(context, 192, 128));
  1413. surface->getCanvas()->clear(SK_ColorRED);
  1414. SkPaint bluePaint;
  1415. bluePaint.setColor(SK_ColorBLUE);
  1416. SkIRect subset = SkIRect::MakeXYWH(25, 20, 50, 50);
  1417. surface->getCanvas()->drawRect(SkRect::Make(subset), bluePaint);
  1418. sk_sp<SkImage> sourceImage = surface->makeImageSnapshot();
  1419. sk_sp<SkImageFilter> filter = make_grayscale(nullptr, nullptr);
  1420. SkIRect clipBounds = SkIRect::MakeXYWH(30, 35, 100, 100);
  1421. SkIRect outSubset;
  1422. SkIPoint offset;
  1423. sk_sp<SkImage> result;
  1424. result = sourceImage->makeWithFilter(nullptr, subset, clipBounds, &outSubset, &offset);
  1425. REPORTER_ASSERT(reporter, !result);
  1426. result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, nullptr, &offset);
  1427. REPORTER_ASSERT(reporter, !result);
  1428. result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, &outSubset, nullptr);
  1429. REPORTER_ASSERT(reporter, !result);
  1430. SkIRect bigSubset = SkIRect::MakeXYWH(-10000, -10000, 20000, 20000);
  1431. result = sourceImage->makeWithFilter(filter.get(), bigSubset, clipBounds, &outSubset, &offset);
  1432. REPORTER_ASSERT(reporter, !result);
  1433. SkIRect empty = SkIRect::MakeEmpty();
  1434. result = sourceImage->makeWithFilter(filter.get(), empty, clipBounds, &outSubset, &offset);
  1435. REPORTER_ASSERT(reporter, !result);
  1436. result = sourceImage->makeWithFilter(filter.get(), subset, empty, &outSubset, &offset);
  1437. REPORTER_ASSERT(reporter, !result);
  1438. SkIRect leftField = SkIRect::MakeXYWH(-1000, 0, 100, 100);
  1439. result = sourceImage->makeWithFilter(filter.get(), subset, leftField, &outSubset, &offset);
  1440. REPORTER_ASSERT(reporter, !result);
  1441. result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, &outSubset, &offset);
  1442. REPORTER_ASSERT(reporter, result);
  1443. REPORTER_ASSERT(reporter, result->bounds().contains(outSubset));
  1444. SkIRect destRect = SkIRect::MakeXYWH(offset.x(), offset.y(),
  1445. outSubset.width(), outSubset.height());
  1446. REPORTER_ASSERT(reporter, clipBounds.contains(destRect));
  1447. // In GPU-mode, this case creates a special image with a backing size that differs from
  1448. // the content size
  1449. {
  1450. clipBounds.setXYWH(0, 0, 170, 100);
  1451. subset.setXYWH(0, 0, 160, 90);
  1452. filter = SkXfermodeImageFilter::Make(SkBlendMode::kSrc, nullptr);
  1453. result = sourceImage->makeWithFilter(filter.get(), subset, clipBounds, &outSubset, &offset);
  1454. REPORTER_ASSERT(reporter, result);
  1455. }
  1456. }
  1457. DEF_TEST(ImageFilterMakeWithFilter, reporter) {
  1458. test_make_with_filter(reporter, nullptr);
  1459. }
  1460. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterMakeWithFilter_Gpu, reporter, ctxInfo) {
  1461. test_make_with_filter(reporter, ctxInfo.grContext());
  1462. }
  1463. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageFilterHugeBlur_Gpu, reporter, ctxInfo) {
  1464. sk_sp<SkSurface> surf(SkSurface::MakeRenderTarget(ctxInfo.grContext(),
  1465. SkBudgeted::kNo,
  1466. SkImageInfo::MakeN32Premul(100, 100)));
  1467. SkCanvas* canvas = surf->getCanvas();
  1468. test_huge_blur(canvas, reporter);
  1469. }
  1470. DEF_GPUTEST_FOR_RENDERING_CONTEXTS(XfermodeImageFilterCroppedInput_Gpu, reporter, ctxInfo) {
  1471. sk_sp<SkSurface> surf(SkSurface::MakeRenderTarget(
  1472. ctxInfo.grContext(),
  1473. SkBudgeted::kNo,
  1474. SkImageInfo::Make(1, 1, kRGBA_8888_SkColorType, kPremul_SkAlphaType)));
  1475. test_xfermode_cropped_input(surf.get(), reporter);
  1476. }
  1477. DEF_GPUTEST_FOR_ALL_CONTEXTS(ImageFilterBlurLargeImage_Gpu, reporter, ctxInfo) {
  1478. auto surface(SkSurface::MakeRenderTarget(
  1479. ctxInfo.grContext(), SkBudgeted::kYes,
  1480. SkImageInfo::Make(100, 100, kRGBA_8888_SkColorType, kPremul_SkAlphaType)));
  1481. test_large_blur_input(reporter, surface->getCanvas());
  1482. }
  1483. /*
  1484. * Test that colorfilterimagefilter does not require its CTM to be decomposed when it has more
  1485. * than just scale/translate, but that other filters do.
  1486. */
  1487. DEF_TEST(ImageFilterComplexCTM, reporter) {
  1488. // just need a colorfilter to exercise the corresponding imagefilter
  1489. sk_sp<SkColorFilter> cf = SkColorFilters::Blend(SK_ColorRED, SkBlendMode::kSrcATop);
  1490. sk_sp<SkImageFilter> cfif = SkColorFilterImageFilter::Make(cf, nullptr); // can handle
  1491. sk_sp<SkImageFilter> blif = SkBlurImageFilter::Make(3, 3, nullptr); // cannot handle
  1492. struct {
  1493. sk_sp<SkImageFilter> fFilter;
  1494. bool fExpectCanHandle;
  1495. } recs[] = {
  1496. { cfif, true },
  1497. { SkColorFilterImageFilter::Make(cf, cfif), true },
  1498. { SkMergeImageFilter::Make(cfif, cfif), true },
  1499. { SkComposeImageFilter::Make(cfif, cfif), true },
  1500. { blif, false },
  1501. { SkBlurImageFilter::Make(3, 3, cfif), false },
  1502. { SkColorFilterImageFilter::Make(cf, blif), false },
  1503. { SkMergeImageFilter::Make(cfif, blif), false },
  1504. { SkComposeImageFilter::Make(blif, cfif), false },
  1505. };
  1506. for (const auto& rec : recs) {
  1507. const bool canHandle = rec.fFilter->canHandleComplexCTM();
  1508. REPORTER_ASSERT(reporter, canHandle == rec.fExpectCanHandle);
  1509. }
  1510. }
  1511. // Test SkXfermodeImageFilter::filterBounds with different blending modes.
  1512. DEF_TEST(XfermodeImageFilterBounds, reporter) {
  1513. SkIRect background_rect = SkIRect::MakeXYWH(0, 0, 100, 100);
  1514. SkIRect foreground_rect = SkIRect::MakeXYWH(50, 50, 100, 100);
  1515. sk_sp<SkImageFilter> background(new FixedBoundsImageFilter(background_rect));
  1516. sk_sp<SkImageFilter> foreground(new FixedBoundsImageFilter(foreground_rect));
  1517. const int kModeCount = static_cast<int>(SkBlendMode::kLastMode) + 1;
  1518. SkIRect expectedBounds[kModeCount];
  1519. // Expect union of input rects by default.
  1520. for (int i = 0; i < kModeCount; ++i) {
  1521. expectedBounds[i] = background_rect;
  1522. expectedBounds[i].join(foreground_rect);
  1523. }
  1524. SkIRect intersection = background_rect;
  1525. intersection.intersect(foreground_rect);
  1526. expectedBounds[static_cast<int>(SkBlendMode::kClear)] = SkIRect::MakeEmpty();
  1527. expectedBounds[static_cast<int>(SkBlendMode::kSrc)] = foreground_rect;
  1528. expectedBounds[static_cast<int>(SkBlendMode::kDst)] = background_rect;
  1529. expectedBounds[static_cast<int>(SkBlendMode::kSrcIn)] = intersection;
  1530. expectedBounds[static_cast<int>(SkBlendMode::kDstIn)] = intersection;
  1531. expectedBounds[static_cast<int>(SkBlendMode::kSrcATop)] = background_rect;
  1532. expectedBounds[static_cast<int>(SkBlendMode::kDstATop)] = foreground_rect;
  1533. // The value of this variable doesn't matter because we use inputs with fixed bounds.
  1534. SkIRect src = SkIRect::MakeXYWH(11, 22, 33, 44);
  1535. for (int i = 0; i < kModeCount; ++i) {
  1536. sk_sp<SkImageFilter> xfermode(SkXfermodeImageFilter::Make(static_cast<SkBlendMode>(i),
  1537. background, foreground, nullptr));
  1538. auto bounds = xfermode->filterBounds(src, SkMatrix::I(),
  1539. SkImageFilter::kForward_MapDirection, nullptr);
  1540. REPORTER_ASSERT(reporter, bounds == expectedBounds[i]);
  1541. }
  1542. // Test empty intersection.
  1543. sk_sp<SkImageFilter> background2(new FixedBoundsImageFilter(SkIRect::MakeXYWH(0, 0, 20, 20)));
  1544. sk_sp<SkImageFilter> foreground2(new FixedBoundsImageFilter(SkIRect::MakeXYWH(40, 40, 50, 50)));
  1545. sk_sp<SkImageFilter> xfermode(SkXfermodeImageFilter::Make(
  1546. SkBlendMode::kSrcIn, std::move(background2), std::move(foreground2), nullptr));
  1547. auto bounds = xfermode->filterBounds(src, SkMatrix::I(),
  1548. SkImageFilter::kForward_MapDirection, nullptr);
  1549. REPORTER_ASSERT(reporter, bounds.isEmpty());
  1550. }
  1551. DEF_TEST(OffsetImageFilterBounds, reporter) {
  1552. SkIRect src = SkIRect::MakeXYWH(0, 0, 100, 100);
  1553. sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(-50.5f, -50.5f, nullptr));
  1554. SkIRect expectedForward = SkIRect::MakeXYWH(-50, -50, 100, 100);
  1555. SkIRect boundsForward = offset->filterBounds(src, SkMatrix::I(),
  1556. SkImageFilter::kForward_MapDirection, nullptr);
  1557. REPORTER_ASSERT(reporter, boundsForward == expectedForward);
  1558. SkIRect expectedReverse = SkIRect::MakeXYWH(50, 50, 100, 100);
  1559. SkIRect boundsReverse = offset->filterBounds(src, SkMatrix::I(),
  1560. SkImageFilter::kReverse_MapDirection, &src);
  1561. REPORTER_ASSERT(reporter, boundsReverse == expectedReverse);
  1562. }
  1563. static void test_arithmetic_bounds(skiatest::Reporter* reporter, float k1, float k2, float k3,
  1564. float k4, sk_sp<SkImageFilter> background,
  1565. sk_sp<SkImageFilter> foreground,
  1566. const SkImageFilter::CropRect* crop, const SkIRect& expected) {
  1567. sk_sp<SkImageFilter> arithmetic(
  1568. SkArithmeticImageFilter::Make(k1, k2, k3, k4, false, background, foreground, crop));
  1569. // The value of the input rect doesn't matter because we use inputs with fixed bounds.
  1570. SkIRect bounds = arithmetic->filterBounds(SkIRect::MakeXYWH(11, 22, 33, 44), SkMatrix::I(),
  1571. SkImageFilter::kForward_MapDirection, nullptr);
  1572. REPORTER_ASSERT(reporter, expected == bounds);
  1573. }
  1574. static void test_arithmetic_combinations(skiatest::Reporter* reporter, float v) {
  1575. SkIRect background_rect = SkIRect::MakeXYWH(0, 0, 100, 100);
  1576. SkIRect foreground_rect = SkIRect::MakeXYWH(50, 50, 100, 100);
  1577. sk_sp<SkImageFilter> background(new FixedBoundsImageFilter(background_rect));
  1578. sk_sp<SkImageFilter> foreground(new FixedBoundsImageFilter(foreground_rect));
  1579. SkIRect union_rect = background_rect;
  1580. union_rect.join(foreground_rect);
  1581. SkIRect intersection = background_rect;
  1582. intersection.intersect(foreground_rect);
  1583. test_arithmetic_bounds(reporter, 0, 0, 0, 0, background, foreground, nullptr,
  1584. SkIRect::MakeEmpty());
  1585. test_arithmetic_bounds(reporter, 0, 0, 0, v, background, foreground, nullptr, union_rect);
  1586. test_arithmetic_bounds(reporter, 0, 0, v, 0, background, foreground, nullptr, background_rect);
  1587. test_arithmetic_bounds(reporter, 0, 0, v, v, background, foreground, nullptr, union_rect);
  1588. test_arithmetic_bounds(reporter, 0, v, 0, 0, background, foreground, nullptr, foreground_rect);
  1589. test_arithmetic_bounds(reporter, 0, v, 0, v, background, foreground, nullptr, union_rect);
  1590. test_arithmetic_bounds(reporter, 0, v, v, 0, background, foreground, nullptr, union_rect);
  1591. test_arithmetic_bounds(reporter, 0, v, v, v, background, foreground, nullptr, union_rect);
  1592. test_arithmetic_bounds(reporter, v, 0, 0, 0, background, foreground, nullptr, intersection);
  1593. test_arithmetic_bounds(reporter, v, 0, 0, v, background, foreground, nullptr, union_rect);
  1594. test_arithmetic_bounds(reporter, v, 0, v, 0, background, foreground, nullptr, background_rect);
  1595. test_arithmetic_bounds(reporter, v, 0, v, v, background, foreground, nullptr, union_rect);
  1596. test_arithmetic_bounds(reporter, v, v, 0, 0, background, foreground, nullptr, foreground_rect);
  1597. test_arithmetic_bounds(reporter, v, v, 0, v, background, foreground, nullptr, union_rect);
  1598. test_arithmetic_bounds(reporter, v, v, v, 0, background, foreground, nullptr, union_rect);
  1599. test_arithmetic_bounds(reporter, v, v, v, v, background, foreground, nullptr, union_rect);
  1600. // Test with crop. When k4 is non-zero, the result is expected to be crop_rect
  1601. // regardless of inputs because the filter affects the whole crop area.
  1602. SkIRect crop_rect = SkIRect::MakeXYWH(-111, -222, 333, 444);
  1603. SkImageFilter::CropRect crop(SkRect::Make(crop_rect));
  1604. test_arithmetic_bounds(reporter, 0, 0, 0, 0, background, foreground, &crop,
  1605. SkIRect::MakeEmpty());
  1606. test_arithmetic_bounds(reporter, 0, 0, 0, v, background, foreground, &crop, crop_rect);
  1607. test_arithmetic_bounds(reporter, 0, 0, v, 0, background, foreground, &crop, background_rect);
  1608. test_arithmetic_bounds(reporter, 0, 0, v, v, background, foreground, &crop, crop_rect);
  1609. test_arithmetic_bounds(reporter, 0, v, 0, 0, background, foreground, &crop, foreground_rect);
  1610. test_arithmetic_bounds(reporter, 0, v, 0, v, background, foreground, &crop, crop_rect);
  1611. test_arithmetic_bounds(reporter, 0, v, v, 0, background, foreground, &crop, union_rect);
  1612. test_arithmetic_bounds(reporter, 0, v, v, v, background, foreground, &crop, crop_rect);
  1613. test_arithmetic_bounds(reporter, v, 0, 0, 0, background, foreground, &crop, intersection);
  1614. test_arithmetic_bounds(reporter, v, 0, 0, v, background, foreground, &crop, crop_rect);
  1615. test_arithmetic_bounds(reporter, v, 0, v, 0, background, foreground, &crop, background_rect);
  1616. test_arithmetic_bounds(reporter, v, 0, v, v, background, foreground, &crop, crop_rect);
  1617. test_arithmetic_bounds(reporter, v, v, 0, 0, background, foreground, &crop, foreground_rect);
  1618. test_arithmetic_bounds(reporter, v, v, 0, v, background, foreground, &crop, crop_rect);
  1619. test_arithmetic_bounds(reporter, v, v, v, 0, background, foreground, &crop, union_rect);
  1620. test_arithmetic_bounds(reporter, v, v, v, v, background, foreground, &crop, crop_rect);
  1621. }
  1622. // Test SkArithmeticImageFilter::filterBounds with different blending modes.
  1623. DEF_TEST(ArithmeticImageFilterBounds, reporter) {
  1624. test_arithmetic_combinations(reporter, 1);
  1625. test_arithmetic_combinations(reporter, 0.5);
  1626. }
  1627. // Test SkImageSource::filterBounds.
  1628. DEF_TEST(ImageSourceBounds, reporter) {
  1629. sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_gradient_circle(64, 64)));
  1630. // Default src and dst rects.
  1631. sk_sp<SkImageFilter> source1(SkImageSource::Make(image));
  1632. SkIRect imageBounds = SkIRect::MakeWH(64, 64);
  1633. SkIRect input(SkIRect::MakeXYWH(10, 20, 30, 40));
  1634. REPORTER_ASSERT(reporter,
  1635. imageBounds == source1->filterBounds(input, SkMatrix::I(),
  1636. SkImageFilter::kForward_MapDirection,
  1637. nullptr));
  1638. REPORTER_ASSERT(reporter,
  1639. input == source1->filterBounds(input, SkMatrix::I(),
  1640. SkImageFilter::kReverse_MapDirection, &input));
  1641. SkMatrix scale(SkMatrix::MakeScale(2));
  1642. SkIRect scaledBounds = SkIRect::MakeWH(128, 128);
  1643. REPORTER_ASSERT(reporter,
  1644. scaledBounds == source1->filterBounds(input, scale,
  1645. SkImageFilter::kForward_MapDirection,
  1646. nullptr));
  1647. REPORTER_ASSERT(reporter, input == source1->filterBounds(input, scale,
  1648. SkImageFilter::kReverse_MapDirection,
  1649. &input));
  1650. // Specified src and dst rects.
  1651. SkRect src(SkRect::MakeXYWH(0.5, 0.5, 100.5, 100.5));
  1652. SkRect dst(SkRect::MakeXYWH(-10.5, -10.5, 120.5, 120.5));
  1653. sk_sp<SkImageFilter> source2(SkImageSource::Make(image, src, dst, kMedium_SkFilterQuality));
  1654. REPORTER_ASSERT(reporter,
  1655. dst.roundOut() == source2->filterBounds(input, SkMatrix::I(),
  1656. SkImageFilter::kForward_MapDirection,
  1657. nullptr));
  1658. REPORTER_ASSERT(reporter,
  1659. input == source2->filterBounds(input, SkMatrix::I(),
  1660. SkImageFilter::kReverse_MapDirection, &input));
  1661. scale.mapRect(&dst);
  1662. scale.mapRect(&src);
  1663. REPORTER_ASSERT(reporter,
  1664. dst.roundOut() == source2->filterBounds(input, scale,
  1665. SkImageFilter::kForward_MapDirection,
  1666. nullptr));
  1667. REPORTER_ASSERT(reporter, input == source2->filterBounds(input, scale,
  1668. SkImageFilter::kReverse_MapDirection,
  1669. &input));
  1670. }