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epoger@google.comec3ed6a2011-07-28 14:26:00 +00001/*
2 * Copyright 2011 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 */
tfarina@chromium.orge4fafb12013-12-12 21:11:12 +00007
reed@google.com2ade0862011-03-17 17:48:04 +00008#include "SkBitmap.h"
9#include "SkCanvas.h"
reed@google.comcef5bb42013-10-15 20:05:24 +000010#include "SkData.h"
halcanary@google.com2c7c7ee2013-12-05 18:31:42 +000011#include "SkDiscardableMemoryPool.h"
commit-bot@chromium.org2d970b52014-05-27 14:14:22 +000012#include "SkImageGeneratorPriv.h"
tfarina@chromium.org8f6884a2014-01-24 20:56:26 +000013#include "SkMatrixUtils.h"
reed@google.comcef5bb42013-10-15 20:05:24 +000014#include "SkPaint.h"
tfarina@chromium.org8f6884a2014-01-24 20:56:26 +000015#include "SkRandom.h"
reed@google.com99c114e2012-05-03 20:14:26 +000016#include "SkShader.h"
reed@google.comcef5bb42013-10-15 20:05:24 +000017#include "SkSurface.h"
tfarina@chromium.org8f6884a2014-01-24 20:56:26 +000018#include "Test.h"
reed@google.comad514302013-01-02 20:19:45 +000019
reed@google.comcef5bb42013-10-15 20:05:24 +000020// A BitmapFactory that always fails when asked to return pixels.
halcanary@google.com2c7c7ee2013-12-05 18:31:42 +000021class FailureImageGenerator : public SkImageGenerator {
22public:
23 FailureImageGenerator() { }
24 virtual ~FailureImageGenerator() { }
skia.committer@gmail.com9681eeb2014-05-30 03:06:10 +000025
commit-bot@chromium.org00f8d6c2014-05-29 15:57:20 +000026protected:
27 virtual bool onGetInfo(SkImageInfo* info) SK_OVERRIDE {
halcanary@google.com2c7c7ee2013-12-05 18:31:42 +000028 info->fWidth = 100;
29 info->fHeight = 100;
commit-bot@chromium.org28fcae22014-04-11 17:15:40 +000030 info->fColorType = kN32_SkColorType;
reed@google.comcef5bb42013-10-15 20:05:24 +000031 info->fAlphaType = kPremul_SkAlphaType;
halcanary@google.com2c7c7ee2013-12-05 18:31:42 +000032 return true;
reed@google.comcef5bb42013-10-15 20:05:24 +000033 }
commit-bot@chromium.org00f8d6c2014-05-29 15:57:20 +000034 // default onGetPixels() returns false, which is what we want.
halcanary@google.com2c7c7ee2013-12-05 18:31:42 +000035};
reed@google.comcef5bb42013-10-15 20:05:24 +000036
37// crbug.com/295895
38// Crashing in skia when a pixelref fails in lockPixels
39//
40static void test_faulty_pixelref(skiatest::Reporter* reporter) {
41 // need a cache, but don't expect to use it, so the budget is not critical
commit-bot@chromium.orgcf2f0082014-04-04 16:43:38 +000042 SkAutoTUnref<SkDiscardableMemoryPool> pool(
43 SkDiscardableMemoryPool::Create(10 * 1000, NULL));
reed@google.comcef5bb42013-10-15 20:05:24 +000044 SkBitmap bm;
halcanary@google.comedd370f2013-12-10 21:11:12 +000045 bool installSuccess = SkInstallDiscardablePixelRef(SkNEW(FailureImageGenerator), &bm, pool);
halcanary@google.com2c7c7ee2013-12-05 18:31:42 +000046 REPORTER_ASSERT(reporter, installSuccess);
reed@google.comcef5bb42013-10-15 20:05:24 +000047 // now our bitmap has a pixelref, but we know it will fail to lock
48
49 SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterPMColor(200, 200));
50 SkCanvas* canvas = surface->getCanvas();
51
52 const SkPaint::FilterLevel levels[] = {
53 SkPaint::kNone_FilterLevel,
54 SkPaint::kLow_FilterLevel,
55 SkPaint::kMedium_FilterLevel,
56 SkPaint::kHigh_FilterLevel,
57 };
58
59 SkPaint paint;
60 canvas->scale(2, 2); // need a scale, otherwise we may ignore filtering
61 for (size_t i = 0; i < SK_ARRAY_COUNT(levels); ++i) {
62 paint.setFilterLevel(levels[i]);
63 canvas->drawBitmap(bm, 0, 0, &paint);
64 }
65}
66
67///////////////////////////////////////////////////////////////////////////////
68
commit-bot@chromium.orge0e7cfe2013-09-09 20:09:12 +000069static void rand_matrix(SkMatrix* mat, SkRandom& rand, unsigned mask) {
reed@google.comad514302013-01-02 20:19:45 +000070 mat->setIdentity();
71 if (mask & SkMatrix::kTranslate_Mask) {
72 mat->postTranslate(rand.nextSScalar1(), rand.nextSScalar1());
73 }
74 if (mask & SkMatrix::kScale_Mask) {
75 mat->postScale(rand.nextSScalar1(), rand.nextSScalar1());
76 }
77 if (mask & SkMatrix::kAffine_Mask) {
78 mat->postRotate(rand.nextSScalar1() * 360);
79 }
80 if (mask & SkMatrix::kPerspective_Mask) {
81 mat->setPerspX(rand.nextSScalar1());
82 mat->setPerspY(rand.nextSScalar1());
83 }
84}
85
commit-bot@chromium.orge0e7cfe2013-09-09 20:09:12 +000086static void rand_size(SkISize* size, SkRandom& rand) {
reed@google.comae573582013-01-03 15:22:40 +000087 size->set(rand.nextU() & 0xFFFF, rand.nextU() & 0xFFFF);
88}
89
90static bool treat_as_sprite(const SkMatrix& mat, const SkISize& size,
91 unsigned bits) {
92 return SkTreatAsSprite(mat, size.width(), size.height(), bits);
reed@google.comad514302013-01-02 20:19:45 +000093}
94
95static void test_treatAsSprite(skiatest::Reporter* reporter) {
96 const unsigned bilerBits = kSkSubPixelBitsForBilerp;
97
98 SkMatrix mat;
reed@google.comae573582013-01-03 15:22:40 +000099 SkISize size;
commit-bot@chromium.orge0e7cfe2013-09-09 20:09:12 +0000100 SkRandom rand;
reed@google.comad514302013-01-02 20:19:45 +0000101
102 // assert: translate-only no-filter can always be treated as sprite
103 for (int i = 0; i < 1000; ++i) {
104 rand_matrix(&mat, rand, SkMatrix::kTranslate_Mask);
105 for (int j = 0; j < 1000; ++j) {
reed@google.comae573582013-01-03 15:22:40 +0000106 rand_size(&size, rand);
107 REPORTER_ASSERT(reporter, treat_as_sprite(mat, size, 0));
reed@google.comad514302013-01-02 20:19:45 +0000108 }
109 }
skia.committer@gmail.com422188f2013-01-03 02:01:32 +0000110
reed@google.comad514302013-01-02 20:19:45 +0000111 // assert: rotate/perspect is never treated as sprite
112 for (int i = 0; i < 1000; ++i) {
113 rand_matrix(&mat, rand, SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask);
114 for (int j = 0; j < 1000; ++j) {
reed@google.comae573582013-01-03 15:22:40 +0000115 rand_size(&size, rand);
116 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, 0));
117 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, bilerBits));
reed@google.comad514302013-01-02 20:19:45 +0000118 }
119 }
120
reed@google.comae573582013-01-03 15:22:40 +0000121 size.set(500, 600);
reed@google.comad514302013-01-02 20:19:45 +0000122
commit-bot@chromium.org4b413c82013-11-25 19:44:07 +0000123 const SkScalar tooMuchSubpixel = 100.1f;
reed@google.comad514302013-01-02 20:19:45 +0000124 mat.setTranslate(tooMuchSubpixel, 0);
reed@google.comae573582013-01-03 15:22:40 +0000125 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, bilerBits));
reed@google.comad514302013-01-02 20:19:45 +0000126 mat.setTranslate(0, tooMuchSubpixel);
reed@google.comae573582013-01-03 15:22:40 +0000127 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, bilerBits));
reed@google.comad514302013-01-02 20:19:45 +0000128
commit-bot@chromium.org4b413c82013-11-25 19:44:07 +0000129 const SkScalar tinySubPixel = 100.02f;
reed@google.comad514302013-01-02 20:19:45 +0000130 mat.setTranslate(tinySubPixel, 0);
reed@google.comae573582013-01-03 15:22:40 +0000131 REPORTER_ASSERT(reporter, treat_as_sprite(mat, size, bilerBits));
reed@google.comad514302013-01-02 20:19:45 +0000132 mat.setTranslate(0, tinySubPixel);
reed@google.comae573582013-01-03 15:22:40 +0000133 REPORTER_ASSERT(reporter, treat_as_sprite(mat, size, bilerBits));
skia.committer@gmail.com422188f2013-01-03 02:01:32 +0000134
reed@google.comad514302013-01-02 20:19:45 +0000135 const SkScalar twoThirds = SK_Scalar1 * 2 / 3;
reed@google.comae573582013-01-03 15:22:40 +0000136 const SkScalar bigScale = SkScalarDiv(size.width() + twoThirds, size.width());
reed@google.comad514302013-01-02 20:19:45 +0000137 mat.setScale(bigScale, bigScale);
reed@google.comae573582013-01-03 15:22:40 +0000138 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, false));
139 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, bilerBits));
skia.committer@gmail.com422188f2013-01-03 02:01:32 +0000140
reed@google.comad514302013-01-02 20:19:45 +0000141 const SkScalar oneThird = SK_Scalar1 / 3;
reed@google.comae573582013-01-03 15:22:40 +0000142 const SkScalar smallScale = SkScalarDiv(size.width() + oneThird, size.width());
reed@google.comad514302013-01-02 20:19:45 +0000143 mat.setScale(smallScale, smallScale);
reed@google.comae573582013-01-03 15:22:40 +0000144 REPORTER_ASSERT(reporter, treat_as_sprite(mat, size, false));
145 REPORTER_ASSERT(reporter, !treat_as_sprite(mat, size, bilerBits));
skia.committer@gmail.com422188f2013-01-03 02:01:32 +0000146
reed@google.comad514302013-01-02 20:19:45 +0000147 const SkScalar oneFortyth = SK_Scalar1 / 40;
reed@google.comae573582013-01-03 15:22:40 +0000148 const SkScalar tinyScale = SkScalarDiv(size.width() + oneFortyth, size.width());
reed@google.comad514302013-01-02 20:19:45 +0000149 mat.setScale(tinyScale, tinyScale);
reed@google.comae573582013-01-03 15:22:40 +0000150 REPORTER_ASSERT(reporter, treat_as_sprite(mat, size, false));
151 REPORTER_ASSERT(reporter, treat_as_sprite(mat, size, bilerBits));
reed@google.comad514302013-01-02 20:19:45 +0000152}
reed@google.com99c114e2012-05-03 20:14:26 +0000153
154static void assert_ifDrawnTo(skiatest::Reporter* reporter,
155 const SkBitmap& bm, bool shouldBeDrawn) {
156 for (int y = 0; y < bm.height(); ++y) {
157 for (int x = 0; x < bm.width(); ++x) {
158 if (shouldBeDrawn) {
commit-bot@chromium.orgc2050e32013-07-15 13:10:31 +0000159 if (SK_ColorTRANSPARENT == *bm.getAddr32(x, y)) {
reed@google.com99c114e2012-05-03 20:14:26 +0000160 REPORTER_ASSERT(reporter, false);
161 return;
162 }
163 } else {
164 // should not be drawn
commit-bot@chromium.orgc2050e32013-07-15 13:10:31 +0000165 if (SK_ColorTRANSPARENT != *bm.getAddr32(x, y)) {
reed@google.com99c114e2012-05-03 20:14:26 +0000166 REPORTER_ASSERT(reporter, false);
167 return;
168 }
169 }
170 }
171 }
172}
173
174static void test_wacky_bitmapshader(skiatest::Reporter* reporter,
175 int width, int height, bool shouldBeDrawn) {
176 SkBitmap dev;
commit-bot@chromium.orgfa9e5fa2014-02-13 22:00:04 +0000177 dev.allocN32Pixels(0x56F, 0x4f6);
junov@google.comdbfac8a2012-12-06 21:47:40 +0000178 dev.eraseColor(SK_ColorTRANSPARENT); // necessary, so we know if we draw to it
rmistry@google.comd6176b02012-08-23 18:14:13 +0000179
reed@google.com99c114e2012-05-03 20:14:26 +0000180 SkMatrix matrix;
rmistry@google.comd6176b02012-08-23 18:14:13 +0000181
reed@google.com99c114e2012-05-03 20:14:26 +0000182 SkCanvas c(dev);
commit-bot@chromium.org4b413c82013-11-25 19:44:07 +0000183 matrix.setAll(-119.34097f,
184 -43.436558f,
185 93489.945f,
186 43.436558f,
187 -119.34097f,
188 123.98426f,
robertphillips@google.com4debcac2012-05-14 16:33:36 +0000189 0, 0, SK_Scalar1);
reed@google.com99c114e2012-05-03 20:14:26 +0000190 c.concat(matrix);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000191
reed@google.com99c114e2012-05-03 20:14:26 +0000192 SkBitmap bm;
commit-bot@chromium.orgfa9e5fa2014-02-13 22:00:04 +0000193 bm.allocN32Pixels(width, height);
reed@google.com99c114e2012-05-03 20:14:26 +0000194 bm.eraseColor(SK_ColorRED);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000195
commit-bot@chromium.org4b413c82013-11-25 19:44:07 +0000196 matrix.setAll(0.0078740157f,
rmistry@google.comd6176b02012-08-23 18:14:13 +0000197 0,
robertphillips@google.com4debcac2012-05-14 16:33:36 +0000198 SkIntToScalar(249),
rmistry@google.comd6176b02012-08-23 18:14:13 +0000199 0,
commit-bot@chromium.org4b413c82013-11-25 19:44:07 +0000200 0.0078740157f,
robertphillips@google.com4debcac2012-05-14 16:33:36 +0000201 SkIntToScalar(239),
202 0, 0, SK_Scalar1);
commit-bot@chromium.org9c9005a2014-04-28 14:55:39 +0000203 SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode,
204 SkShader::kRepeat_TileMode, &matrix);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000205
reed@google.com99c114e2012-05-03 20:14:26 +0000206 SkPaint paint;
207 paint.setShader(s)->unref();
rmistry@google.comd6176b02012-08-23 18:14:13 +0000208
reed@google.com99c114e2012-05-03 20:14:26 +0000209 SkRect r = SkRect::MakeXYWH(681, 239, 695, 253);
210 c.drawRect(r, paint);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000211
reed@google.com99c114e2012-05-03 20:14:26 +0000212 assert_ifDrawnTo(reporter, dev, shouldBeDrawn);
213}
214
215/*
216 * Original bug was asserting that the matrix-proc had generated a (Y) value
217 * that was out of range. This led (in the release build) to the sampler-proc
218 * reading memory out-of-bounds of the original bitmap.
219 *
220 * We were numerically overflowing our 16bit coordinates that we communicate
221 * between these two procs. The fixes was in two parts:
222 *
223 * 1. Just don't draw bitmaps larger than 64K-1 in width or height, since we
224 * can't represent those coordinates in our transport format (yet).
225 * 2. Perform an unsigned shift during the calculation, so we don't get
226 * sign-extension bleed when packing the two values (X,Y) into our 32bit
227 * slot.
228 *
229 * This tests exercises the original setup, plus 3 more to ensure that we can,
230 * in fact, handle bitmaps at 64K-1 (assuming we don't exceed the total
231 * memory allocation limit).
232 */
233static void test_giantrepeat_crbug118018(skiatest::Reporter* reporter) {
234 static const struct {
235 int fWidth;
236 int fHeight;
237 bool fExpectedToDraw;
238 } gTests[] = {
239 { 0x1b294, 0x7f, false }, // crbug 118018 (width exceeds 64K)
240 { 0xFFFF, 0x7f, true }, // should draw, test max width
241 { 0x7f, 0xFFFF, true }, // should draw, test max height
242 { 0xFFFF, 0xFFFF, false }, // allocation fails (too much RAM)
243 };
rmistry@google.comd6176b02012-08-23 18:14:13 +0000244
reed@google.com99c114e2012-05-03 20:14:26 +0000245 for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); ++i) {
246 test_wacky_bitmapshader(reporter,
247 gTests[i].fWidth, gTests[i].fHeight,
248 gTests[i].fExpectedToDraw);
249 }
250}
reed@google.com0da06272012-05-03 20:26:06 +0000251
reed@google.com99c114e2012-05-03 20:14:26 +0000252///////////////////////////////////////////////////////////////////////////////
reed@google.com2ade0862011-03-17 17:48:04 +0000253
sugoi@google.com54f0d1b2013-02-27 19:17:41 +0000254static void test_nan_antihair() {
reed@google.com6de0bfc2012-03-30 17:43:33 +0000255 SkBitmap bm;
commit-bot@chromium.orgfa9e5fa2014-02-13 22:00:04 +0000256 bm.allocN32Pixels(20, 20);
reed@google.com6de0bfc2012-03-30 17:43:33 +0000257
258 SkCanvas canvas(bm);
259
260 SkPath path;
261 path.moveTo(0, 0);
262 path.lineTo(10, SK_ScalarNaN);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000263
reed@google.com6de0bfc2012-03-30 17:43:33 +0000264 SkPaint paint;
265 paint.setAntiAlias(true);
266 paint.setStyle(SkPaint::kStroke_Style);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000267
reed@google.com6de0bfc2012-03-30 17:43:33 +0000268 // before our fix to SkScan_Antihair.cpp to check for integral NaN (0x800...)
269 // this would trigger an assert/crash.
270 //
271 // see rev. 3558
272 canvas.drawPath(path, paint);
273}
274
reed@google.com2ade0862011-03-17 17:48:04 +0000275static bool check_for_all_zeros(const SkBitmap& bm) {
276 SkAutoLockPixels alp(bm);
277
278 size_t count = bm.width() * bm.bytesPerPixel();
279 for (int y = 0; y < bm.height(); y++) {
280 const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y));
281 for (size_t i = 0; i < count; i++) {
282 if (ptr[i]) {
283 return false;
284 }
285 }
286 }
287 return true;
288}
289
290static const int gWidth = 256;
291static const int gHeight = 256;
292
commit-bot@chromium.orgfa9e5fa2014-02-13 22:00:04 +0000293static void create(SkBitmap* bm, SkColor color) {
294 bm->allocN32Pixels(gWidth, gHeight);
reed@google.com2ade0862011-03-17 17:48:04 +0000295 bm->eraseColor(color);
296}
297
tfarina@chromium.orge4fafb12013-12-12 21:11:12 +0000298DEF_TEST(DrawBitmapRect, reporter) {
reed@google.com2ade0862011-03-17 17:48:04 +0000299 SkBitmap src, dst;
300
commit-bot@chromium.orgfa9e5fa2014-02-13 22:00:04 +0000301 create(&src, 0xFFFFFFFF);
302 create(&dst, 0);
reed@google.com2ade0862011-03-17 17:48:04 +0000303
304 SkCanvas canvas(dst);
305
306 SkIRect srcR = { gWidth, 0, gWidth + 16, 16 };
307 SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) };
308
309 canvas.drawBitmapRect(src, &srcR, dstR, NULL);
310
311 // ensure that we draw nothing if srcR does not intersect the bitmap
312 REPORTER_ASSERT(reporter, check_for_all_zeros(dst));
reed@google.com6de0bfc2012-03-30 17:43:33 +0000313
sugoi@google.com54f0d1b2013-02-27 19:17:41 +0000314 test_nan_antihair();
reed@google.com99c114e2012-05-03 20:14:26 +0000315 test_giantrepeat_crbug118018(reporter);
reed@google.comad514302013-01-02 20:19:45 +0000316
317 test_treatAsSprite(reporter);
reed@google.com23d0ab72013-10-15 20:14:00 +0000318 test_faulty_pixelref(reporter);
reed@google.com2ade0862011-03-17 17:48:04 +0000319}