epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2011 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
reed@google.com | 2ade086 | 2011-03-17 17:48:04 +0000 | [diff] [blame] | 8 | #include "Test.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkCanvas.h" |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 11 | #include "SkShader.h" |
reed@google.com | ad51430 | 2013-01-02 20:19:45 +0000 | [diff] [blame] | 12 | #include "SkRandom.h" |
| 13 | #include "SkMatrixUtils.h" |
| 14 | |
| 15 | static void rand_matrix(SkMatrix* mat, SkRandom& rand, unsigned mask) { |
| 16 | mat->setIdentity(); |
| 17 | if (mask & SkMatrix::kTranslate_Mask) { |
| 18 | mat->postTranslate(rand.nextSScalar1(), rand.nextSScalar1()); |
| 19 | } |
| 20 | if (mask & SkMatrix::kScale_Mask) { |
| 21 | mat->postScale(rand.nextSScalar1(), rand.nextSScalar1()); |
| 22 | } |
| 23 | if (mask & SkMatrix::kAffine_Mask) { |
| 24 | mat->postRotate(rand.nextSScalar1() * 360); |
| 25 | } |
| 26 | if (mask & SkMatrix::kPerspective_Mask) { |
| 27 | mat->setPerspX(rand.nextSScalar1()); |
| 28 | mat->setPerspY(rand.nextSScalar1()); |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | static void rand_rect(SkRect* r, SkRandom& rand) { |
| 33 | r->set(rand.nextSScalar1() * 1000, rand.nextSScalar1() * 1000, |
| 34 | rand.nextSScalar1() * 1000, rand.nextSScalar1() * 1000); |
| 35 | r->sort(); |
| 36 | } |
| 37 | |
| 38 | static void test_treatAsSprite(skiatest::Reporter* reporter) { |
| 39 | const unsigned bilerBits = kSkSubPixelBitsForBilerp; |
| 40 | |
| 41 | SkMatrix mat; |
| 42 | SkRect r; |
| 43 | SkRandom rand; |
| 44 | |
| 45 | // assert: translate-only no-filter can always be treated as sprite |
| 46 | for (int i = 0; i < 1000; ++i) { |
| 47 | rand_matrix(&mat, rand, SkMatrix::kTranslate_Mask); |
| 48 | for (int j = 0; j < 1000; ++j) { |
| 49 | rand_rect(&r, rand); |
| 50 | REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, r, 0)); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | // assert: rotate/perspect is never treated as sprite |
| 55 | for (int i = 0; i < 1000; ++i) { |
| 56 | rand_matrix(&mat, rand, SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask); |
| 57 | for (int j = 0; j < 1000; ++j) { |
| 58 | rand_rect(&r, rand); |
| 59 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, 0)); |
| 60 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, bilerBits)); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | r.set(10, 10, 500, 600); |
| 65 | |
| 66 | const SkScalar tooMuchSubpixel = SkFloatToScalar(100.1f); |
| 67 | mat.setTranslate(tooMuchSubpixel, 0); |
| 68 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, bilerBits)); |
| 69 | mat.setTranslate(0, tooMuchSubpixel); |
| 70 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, bilerBits)); |
| 71 | |
| 72 | const SkScalar tinySubPixel = SkFloatToScalar(100.02f); |
| 73 | mat.setTranslate(tinySubPixel, 0); |
| 74 | REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, r, bilerBits)); |
| 75 | mat.setTranslate(0, tinySubPixel); |
| 76 | REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, r, bilerBits)); |
| 77 | |
| 78 | const SkScalar twoThirds = SK_Scalar1 * 2 / 3; |
| 79 | const SkScalar bigScale = SkScalarDiv(r.width() + twoThirds, r.width()); |
| 80 | mat.setScale(bigScale, bigScale); |
| 81 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, false)); |
| 82 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, bilerBits)); |
| 83 | |
| 84 | const SkScalar oneThird = SK_Scalar1 / 3; |
| 85 | const SkScalar smallScale = SkScalarDiv(r.width() + oneThird, r.width()); |
| 86 | mat.setScale(smallScale, smallScale); |
| 87 | REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, r, false)); |
| 88 | REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, r, bilerBits)); |
| 89 | |
| 90 | const SkScalar oneFortyth = SK_Scalar1 / 40; |
| 91 | const SkScalar tinyScale = SkScalarDiv(r.width() + oneFortyth, r.width()); |
| 92 | mat.setScale(tinyScale, tinyScale); |
| 93 | REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, r, false)); |
| 94 | REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, r, bilerBits)); |
| 95 | } |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 96 | |
| 97 | static void assert_ifDrawnTo(skiatest::Reporter* reporter, |
| 98 | const SkBitmap& bm, bool shouldBeDrawn) { |
| 99 | for (int y = 0; y < bm.height(); ++y) { |
| 100 | for (int x = 0; x < bm.width(); ++x) { |
| 101 | if (shouldBeDrawn) { |
| 102 | if (0 == *bm.getAddr32(x, y)) { |
| 103 | REPORTER_ASSERT(reporter, false); |
| 104 | return; |
| 105 | } |
| 106 | } else { |
| 107 | // should not be drawn |
| 108 | if (*bm.getAddr32(x, y)) { |
| 109 | REPORTER_ASSERT(reporter, false); |
| 110 | return; |
| 111 | } |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | static void test_wacky_bitmapshader(skiatest::Reporter* reporter, |
| 118 | int width, int height, bool shouldBeDrawn) { |
| 119 | SkBitmap dev; |
| 120 | dev.setConfig(SkBitmap::kARGB_8888_Config, 0x56F, 0x4f6); |
| 121 | dev.allocPixels(); |
junov@google.com | dbfac8a | 2012-12-06 21:47:40 +0000 | [diff] [blame] | 122 | dev.eraseColor(SK_ColorTRANSPARENT); // necessary, so we know if we draw to it |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 123 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 124 | SkMatrix matrix; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 125 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 126 | SkCanvas c(dev); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 127 | matrix.setAll(SkFloatToScalar(-119.34097f), |
| 128 | SkFloatToScalar(-43.436558f), |
robertphillips@google.com | 4debcac | 2012-05-14 16:33:36 +0000 | [diff] [blame] | 129 | SkFloatToScalar(93489.945f), |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 130 | SkFloatToScalar(43.436558f), |
| 131 | SkFloatToScalar(-119.34097f), |
robertphillips@google.com | 4debcac | 2012-05-14 16:33:36 +0000 | [diff] [blame] | 132 | SkFloatToScalar(123.98426f), |
| 133 | 0, 0, SK_Scalar1); |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 134 | c.concat(matrix); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 135 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 136 | SkBitmap bm; |
| 137 | bm.setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 138 | bm.allocPixels(); |
| 139 | bm.eraseColor(SK_ColorRED); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 140 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 141 | SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode, |
| 142 | SkShader::kRepeat_TileMode); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 143 | matrix.setAll(SkFloatToScalar(0.0078740157f), |
| 144 | 0, |
robertphillips@google.com | 4debcac | 2012-05-14 16:33:36 +0000 | [diff] [blame] | 145 | SkIntToScalar(249), |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 146 | 0, |
| 147 | SkFloatToScalar(0.0078740157f), |
robertphillips@google.com | 4debcac | 2012-05-14 16:33:36 +0000 | [diff] [blame] | 148 | SkIntToScalar(239), |
| 149 | 0, 0, SK_Scalar1); |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 150 | s->setLocalMatrix(matrix); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 151 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 152 | SkPaint paint; |
| 153 | paint.setShader(s)->unref(); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 154 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 155 | SkRect r = SkRect::MakeXYWH(681, 239, 695, 253); |
| 156 | c.drawRect(r, paint); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 157 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 158 | assert_ifDrawnTo(reporter, dev, shouldBeDrawn); |
| 159 | } |
| 160 | |
| 161 | /* |
| 162 | * Original bug was asserting that the matrix-proc had generated a (Y) value |
| 163 | * that was out of range. This led (in the release build) to the sampler-proc |
| 164 | * reading memory out-of-bounds of the original bitmap. |
| 165 | * |
| 166 | * We were numerically overflowing our 16bit coordinates that we communicate |
| 167 | * between these two procs. The fixes was in two parts: |
| 168 | * |
| 169 | * 1. Just don't draw bitmaps larger than 64K-1 in width or height, since we |
| 170 | * can't represent those coordinates in our transport format (yet). |
| 171 | * 2. Perform an unsigned shift during the calculation, so we don't get |
| 172 | * sign-extension bleed when packing the two values (X,Y) into our 32bit |
| 173 | * slot. |
| 174 | * |
| 175 | * This tests exercises the original setup, plus 3 more to ensure that we can, |
| 176 | * in fact, handle bitmaps at 64K-1 (assuming we don't exceed the total |
| 177 | * memory allocation limit). |
| 178 | */ |
| 179 | static void test_giantrepeat_crbug118018(skiatest::Reporter* reporter) { |
reed@google.com | 0da0627 | 2012-05-03 20:26:06 +0000 | [diff] [blame] | 180 | #ifdef SK_SCALAR_IS_FLOAT |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 181 | static const struct { |
| 182 | int fWidth; |
| 183 | int fHeight; |
| 184 | bool fExpectedToDraw; |
| 185 | } gTests[] = { |
| 186 | { 0x1b294, 0x7f, false }, // crbug 118018 (width exceeds 64K) |
| 187 | { 0xFFFF, 0x7f, true }, // should draw, test max width |
| 188 | { 0x7f, 0xFFFF, true }, // should draw, test max height |
| 189 | { 0xFFFF, 0xFFFF, false }, // allocation fails (too much RAM) |
| 190 | }; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 191 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 192 | for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); ++i) { |
| 193 | test_wacky_bitmapshader(reporter, |
| 194 | gTests[i].fWidth, gTests[i].fHeight, |
| 195 | gTests[i].fExpectedToDraw); |
| 196 | } |
reed@google.com | 0da0627 | 2012-05-03 20:26:06 +0000 | [diff] [blame] | 197 | #endif |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 198 | } |
reed@google.com | 0da0627 | 2012-05-03 20:26:06 +0000 | [diff] [blame] | 199 | |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 200 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 2ade086 | 2011-03-17 17:48:04 +0000 | [diff] [blame] | 201 | |
reed@google.com | 6de0bfc | 2012-03-30 17:43:33 +0000 | [diff] [blame] | 202 | static void test_nan_antihair(skiatest::Reporter* reporter) { |
| 203 | SkBitmap bm; |
| 204 | bm.setConfig(SkBitmap::kARGB_8888_Config, 20, 20); |
| 205 | bm.allocPixels(); |
| 206 | |
| 207 | SkCanvas canvas(bm); |
| 208 | |
| 209 | SkPath path; |
| 210 | path.moveTo(0, 0); |
| 211 | path.lineTo(10, SK_ScalarNaN); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 212 | |
reed@google.com | 6de0bfc | 2012-03-30 17:43:33 +0000 | [diff] [blame] | 213 | SkPaint paint; |
| 214 | paint.setAntiAlias(true); |
| 215 | paint.setStyle(SkPaint::kStroke_Style); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 216 | |
reed@google.com | 6de0bfc | 2012-03-30 17:43:33 +0000 | [diff] [blame] | 217 | // before our fix to SkScan_Antihair.cpp to check for integral NaN (0x800...) |
| 218 | // this would trigger an assert/crash. |
| 219 | // |
| 220 | // see rev. 3558 |
| 221 | canvas.drawPath(path, paint); |
| 222 | } |
| 223 | |
reed@google.com | 2ade086 | 2011-03-17 17:48:04 +0000 | [diff] [blame] | 224 | static bool check_for_all_zeros(const SkBitmap& bm) { |
| 225 | SkAutoLockPixels alp(bm); |
| 226 | |
| 227 | size_t count = bm.width() * bm.bytesPerPixel(); |
| 228 | for (int y = 0; y < bm.height(); y++) { |
| 229 | const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y)); |
| 230 | for (size_t i = 0; i < count; i++) { |
| 231 | if (ptr[i]) { |
| 232 | return false; |
| 233 | } |
| 234 | } |
| 235 | } |
| 236 | return true; |
| 237 | } |
| 238 | |
| 239 | static const int gWidth = 256; |
| 240 | static const int gHeight = 256; |
| 241 | |
| 242 | static void create(SkBitmap* bm, SkBitmap::Config config, SkColor color) { |
| 243 | bm->setConfig(config, gWidth, gHeight); |
| 244 | bm->allocPixels(); |
| 245 | bm->eraseColor(color); |
| 246 | } |
| 247 | |
| 248 | static void TestDrawBitmapRect(skiatest::Reporter* reporter) { |
| 249 | SkBitmap src, dst; |
| 250 | |
| 251 | create(&src, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF); |
| 252 | create(&dst, SkBitmap::kARGB_8888_Config, 0); |
| 253 | |
| 254 | SkCanvas canvas(dst); |
| 255 | |
| 256 | SkIRect srcR = { gWidth, 0, gWidth + 16, 16 }; |
| 257 | SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) }; |
| 258 | |
| 259 | canvas.drawBitmapRect(src, &srcR, dstR, NULL); |
| 260 | |
| 261 | // ensure that we draw nothing if srcR does not intersect the bitmap |
| 262 | REPORTER_ASSERT(reporter, check_for_all_zeros(dst)); |
reed@google.com | 6de0bfc | 2012-03-30 17:43:33 +0000 | [diff] [blame] | 263 | |
| 264 | test_nan_antihair(reporter); |
reed@google.com | 99c114e | 2012-05-03 20:14:26 +0000 | [diff] [blame] | 265 | test_giantrepeat_crbug118018(reporter); |
reed@google.com | ad51430 | 2013-01-02 20:19:45 +0000 | [diff] [blame] | 266 | |
| 267 | test_treatAsSprite(reporter); |
reed@google.com | 2ade086 | 2011-03-17 17:48:04 +0000 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | #include "TestClassDef.h" |
| 271 | DEFINE_TESTCLASS("DrawBitmapRect", TestDrawBitmapRectClass, TestDrawBitmapRect) |