reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 1 | /* |
| 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.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 7 | |
reed | 8c0c7b0 | 2014-06-27 05:49:53 -0700 | [diff] [blame] | 8 | #include "SkCanvas.h" |
fmalita | 5edf82e | 2016-03-03 06:41:54 -0800 | [diff] [blame] | 9 | #include "SkColorPriv.h" |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 10 | #include "SkColorShader.h" |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 11 | #include "SkGradientShader.h" |
robertphillips@google.com | 1f2f338 | 2013-08-29 11:54:56 +0000 | [diff] [blame] | 12 | #include "SkShader.h" |
fmalita | 8d38102 | 2015-11-19 10:35:34 -0800 | [diff] [blame] | 13 | #include "SkSurface.h" |
robertphillips@google.com | 1f2f338 | 2013-08-29 11:54:56 +0000 | [diff] [blame] | 14 | #include "SkTemplates.h" |
tfarina@chromium.org | 8f6884a | 2014-01-24 20:56:26 +0000 | [diff] [blame] | 15 | #include "Test.h" |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 16 | |
reed | 9d91eb3 | 2015-01-28 11:44:48 -0800 | [diff] [blame] | 17 | // https://code.google.com/p/chromium/issues/detail?id=448299 |
| 18 | // Giant (inverse) matrix causes overflow when converting/computing using 32.32 |
| 19 | // Before the fix, we would assert (and then crash). |
| 20 | static void test_big_grad(skiatest::Reporter* reporter) { |
| 21 | const SkColor colors[] = { SK_ColorRED, SK_ColorBLUE }; |
| 22 | const SkPoint pts[] = {{ 15, 14.7112684f }, { 0.709064007f, 12.6108112f }}; |
reed | 9d91eb3 | 2015-01-28 11:44:48 -0800 | [diff] [blame] | 23 | SkPaint paint; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 24 | paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2, |
| 25 | SkShader::kClamp_TileMode)); |
reed | 9d91eb3 | 2015-01-28 11:44:48 -0800 | [diff] [blame] | 26 | |
| 27 | SkBitmap bm; |
| 28 | bm.allocN32Pixels(2000, 1); |
| 29 | SkCanvas c(bm); |
| 30 | |
| 31 | const SkScalar affine[] = { |
| 32 | 1.06608627e-06f, 4.26434525e-07f, 6.2855f, 2.6611f, 273.4393f, 244.0046f |
| 33 | }; |
| 34 | SkMatrix matrix; |
| 35 | matrix.setAffine(affine); |
| 36 | c.concat(matrix); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 37 | |
reed | 9d91eb3 | 2015-01-28 11:44:48 -0800 | [diff] [blame] | 38 | c.drawPaint(paint); |
| 39 | } |
| 40 | |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 41 | struct GradRec { |
| 42 | int fColorCount; |
| 43 | const SkColor* fColors; |
| 44 | const SkScalar* fPos; |
| 45 | const SkPoint* fPoint; // 2 |
| 46 | const SkScalar* fRadius; // 2 |
| 47 | SkShader::TileMode fTileMode; |
| 48 | |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 49 | void gradCheck(skiatest::Reporter* reporter, const sk_sp<SkShader>& shader, |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 50 | SkShader::GradientInfo* info, |
| 51 | SkShader::GradientType gt) const { |
| 52 | SkAutoTMalloc<SkColor> colorStorage(fColorCount); |
| 53 | SkAutoTMalloc<SkScalar> posStorage(fColorCount); |
| 54 | |
| 55 | info->fColorCount = fColorCount; |
| 56 | info->fColors = colorStorage; |
| 57 | info->fColorOffsets = posStorage.get(); |
| 58 | REPORTER_ASSERT(reporter, shader->asAGradient(info) == gt); |
| 59 | |
| 60 | REPORTER_ASSERT(reporter, info->fColorCount == fColorCount); |
| 61 | REPORTER_ASSERT(reporter, |
| 62 | !memcmp(info->fColors, fColors, fColorCount * sizeof(SkColor))); |
| 63 | REPORTER_ASSERT(reporter, |
| 64 | !memcmp(info->fColorOffsets, fPos, fColorCount * sizeof(SkScalar))); |
| 65 | REPORTER_ASSERT(reporter, fTileMode == info->fTileMode); |
| 66 | } |
| 67 | }; |
| 68 | |
| 69 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 70 | static void none_gradproc(skiatest::Reporter* reporter, const GradRec&, const GradRec&) { |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 71 | sk_sp<SkShader> s(SkShader::MakeEmptyShader()); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 72 | REPORTER_ASSERT(reporter, SkShader::kNone_GradientType == s->asAGradient(nullptr)); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 73 | } |
| 74 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 75 | static void color_gradproc(skiatest::Reporter* reporter, const GradRec& rec, const GradRec&) { |
Hal Canary | 342b7ac | 2016-11-04 11:49:42 -0400 | [diff] [blame] | 76 | sk_sp<SkShader> s(new SkColorShader(rec.fColors[0])); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 77 | REPORTER_ASSERT(reporter, SkShader::kColor_GradientType == s->asAGradient(nullptr)); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 78 | |
| 79 | SkShader::GradientInfo info; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 80 | info.fColors = nullptr; |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 81 | info.fColorCount = 0; |
| 82 | s->asAGradient(&info); |
| 83 | REPORTER_ASSERT(reporter, 1 == info.fColorCount); |
| 84 | } |
| 85 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 86 | static void linear_gradproc(skiatest::Reporter* reporter, const GradRec& buildRec, |
| 87 | const GradRec& checkRec) { |
| 88 | sk_sp<SkShader> s(SkGradientShader::MakeLinear(buildRec.fPoint, buildRec.fColors, buildRec.fPos, |
| 89 | buildRec.fColorCount, buildRec.fTileMode)); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 90 | |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 91 | SkShader::GradientInfo info; |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 92 | checkRec.gradCheck(reporter, s, &info, SkShader::kLinear_GradientType); |
| 93 | REPORTER_ASSERT(reporter, !memcmp(info.fPoint, checkRec.fPoint, 2 * sizeof(SkPoint))); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 94 | } |
| 95 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 96 | static void radial_gradproc(skiatest::Reporter* reporter, const GradRec& buildRec, |
| 97 | const GradRec& checkRec) { |
| 98 | sk_sp<SkShader> s(SkGradientShader::MakeRadial(buildRec.fPoint[0], buildRec.fRadius[0], |
| 99 | buildRec.fColors, buildRec.fPos, |
| 100 | buildRec.fColorCount, buildRec.fTileMode)); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 101 | |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 102 | SkShader::GradientInfo info; |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 103 | checkRec.gradCheck(reporter, s, &info, SkShader::kRadial_GradientType); |
| 104 | REPORTER_ASSERT(reporter, info.fPoint[0] == checkRec.fPoint[0]); |
| 105 | REPORTER_ASSERT(reporter, info.fRadius[0] == checkRec.fRadius[0]); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 106 | } |
| 107 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 108 | static void sweep_gradproc(skiatest::Reporter* reporter, const GradRec& buildRec, |
| 109 | const GradRec& checkRec) { |
| 110 | sk_sp<SkShader> s(SkGradientShader::MakeSweep(buildRec.fPoint[0].fX, buildRec.fPoint[0].fY, |
| 111 | buildRec.fColors, buildRec.fPos, |
| 112 | buildRec.fColorCount)); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 113 | |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 114 | SkShader::GradientInfo info; |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 115 | checkRec.gradCheck(reporter, s, &info, SkShader::kSweep_GradientType); |
| 116 | REPORTER_ASSERT(reporter, info.fPoint[0] == checkRec.fPoint[0]); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 117 | } |
| 118 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 119 | static void conical_gradproc(skiatest::Reporter* reporter, const GradRec& buildRec, |
| 120 | const GradRec& checkRec) { |
| 121 | sk_sp<SkShader> s(SkGradientShader::MakeTwoPointConical(buildRec.fPoint[0], |
| 122 | buildRec.fRadius[0], |
| 123 | buildRec.fPoint[1], |
| 124 | buildRec.fRadius[1], |
| 125 | buildRec.fColors, |
| 126 | buildRec.fPos, |
| 127 | buildRec.fColorCount, |
| 128 | buildRec.fTileMode)); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 129 | |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 130 | SkShader::GradientInfo info; |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 131 | checkRec.gradCheck(reporter, s, &info, SkShader::kConical_GradientType); |
| 132 | REPORTER_ASSERT(reporter, !memcmp(info.fPoint, checkRec.fPoint, 2 * sizeof(SkPoint))); |
| 133 | REPORTER_ASSERT(reporter, !memcmp(info.fRadius, checkRec.fRadius, 2 * sizeof(SkScalar))); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 134 | } |
| 135 | |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 136 | // Ensure that repeated color gradients behave like drawing a single color |
sugoi@google.com | e0e385c | 2013-03-11 18:50:03 +0000 | [diff] [blame] | 137 | static void TestConstantGradient(skiatest::Reporter*) { |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 138 | const SkPoint pts[] = { |
| 139 | { 0, 0 }, |
| 140 | { SkIntToScalar(10), 0 } |
| 141 | }; |
| 142 | SkColor colors[] = { SK_ColorBLUE, SK_ColorBLUE }; |
| 143 | const SkScalar pos[] = { 0, SK_Scalar1 }; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 144 | SkPaint paint; |
| 145 | paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 2, SkShader::kClamp_TileMode)); |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 146 | SkBitmap outBitmap; |
mike@reedtribe.org | deee496 | 2014-02-13 14:41:43 +0000 | [diff] [blame] | 147 | outBitmap.allocN32Pixels(10, 1); |
mike@reedtribe.org | deee496 | 2014-02-13 14:41:43 +0000 | [diff] [blame] | 148 | SkCanvas canvas(outBitmap); |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 149 | canvas.drawPaint(paint); |
| 150 | SkAutoLockPixels alp(outBitmap); |
| 151 | for (int i = 0; i < 10; i++) { |
| 152 | // The following is commented out because it currently fails |
| 153 | // Related bug: https://code.google.com/p/skia/issues/detail?id=1098 |
| 154 | |
| 155 | // REPORTER_ASSERT(reporter, SK_ColorBLUE == outBitmap.getColor(i, 0)); |
| 156 | } |
| 157 | } |
| 158 | |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 159 | typedef void (*GradProc)(skiatest::Reporter* reporter, const GradRec&, const GradRec&); |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 160 | |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 161 | static void TestGradientShaders(skiatest::Reporter* reporter) { |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 162 | static const SkColor gColors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; |
| 163 | static const SkScalar gPos[] = { 0, SK_ScalarHalf, SK_Scalar1 }; |
| 164 | static const SkPoint gPts[] = { |
| 165 | { 0, 0 }, |
| 166 | { SkIntToScalar(10), SkIntToScalar(20) } |
| 167 | }; |
| 168 | static const SkScalar gRad[] = { SkIntToScalar(1), SkIntToScalar(2) }; |
| 169 | |
| 170 | GradRec rec; |
| 171 | rec.fColorCount = SK_ARRAY_COUNT(gColors); |
| 172 | rec.fColors = gColors; |
| 173 | rec.fPos = gPos; |
| 174 | rec.fPoint = gPts; |
| 175 | rec.fRadius = gRad; |
| 176 | rec.fTileMode = SkShader::kClamp_TileMode; |
| 177 | |
| 178 | static const GradProc gProcs[] = { |
| 179 | none_gradproc, |
| 180 | color_gradproc, |
| 181 | linear_gradproc, |
| 182 | radial_gradproc, |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 183 | sweep_gradproc, |
| 184 | conical_gradproc, |
| 185 | }; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 186 | |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 187 | for (size_t i = 0; i < SK_ARRAY_COUNT(gProcs); ++i) { |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 188 | gProcs[i](reporter, rec, rec); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | static void TestGradientOptimization(skiatest::Reporter* reporter) { |
| 193 | static const struct { |
| 194 | GradProc fProc; |
| 195 | bool fIsClampRestricted; |
| 196 | } gProcInfo[] = { |
| 197 | { linear_gradproc , false }, |
| 198 | { radial_gradproc , false }, |
| 199 | { sweep_gradproc , true }, // sweep is funky in that it always pretends to be kClamp. |
| 200 | { conical_gradproc, false }, |
| 201 | }; |
| 202 | |
| 203 | static const SkColor gC_00[] = { 0xff000000, 0xff000000 }; |
| 204 | static const SkColor gC_01[] = { 0xff000000, 0xffffffff }; |
| 205 | static const SkColor gC_11[] = { 0xffffffff, 0xffffffff }; |
| 206 | static const SkColor gC_001[] = { 0xff000000, 0xff000000, 0xffffffff }; |
| 207 | static const SkColor gC_011[] = { 0xff000000, 0xffffffff, 0xffffffff }; |
| 208 | static const SkColor gC_0011[] = { 0xff000000, 0xff000000, 0xffffffff, 0xffffffff }; |
| 209 | |
| 210 | static const SkScalar gP_01[] = { 0, 1 }; |
| 211 | static const SkScalar gP_001[] = { 0, 0, 1 }; |
| 212 | static const SkScalar gP_011[] = { 0, 1, 1 }; |
| 213 | static const SkScalar gP_0x1[] = { 0, .5f, 1 }; |
| 214 | static const SkScalar gP_0011[] = { 0, 0, 1, 1 }; |
| 215 | |
| 216 | static const SkPoint gPts[] = { {0, 0}, {1, 1} }; |
| 217 | static const SkScalar gRadii[] = { 1, 2 }; |
| 218 | |
| 219 | static const struct { |
| 220 | const SkColor* fCol; |
| 221 | const SkScalar* fPos; |
| 222 | int fCount; |
| 223 | |
| 224 | const SkColor* fExpectedCol; |
| 225 | const SkScalar* fExpectedPos; |
| 226 | int fExpectedCount; |
| 227 | bool fRequiresNonClamp; |
| 228 | } gTests[] = { |
| 229 | { gC_001, gP_001, 3, gC_01, gP_01, 2, false }, |
| 230 | { gC_001, gP_011, 3, gC_00, gP_01, 2, true }, |
| 231 | { gC_001, gP_0x1, 3, gC_001, gP_0x1, 3, false }, |
| 232 | { gC_001, nullptr, 3, gC_001, gP_0x1, 3, false }, |
| 233 | |
| 234 | { gC_011, gP_001, 3, gC_11, gP_01, 2, true }, |
| 235 | { gC_011, gP_011, 3, gC_01, gP_01, 2, false }, |
| 236 | { gC_011, gP_0x1, 3, gC_011, gP_0x1, 3, false }, |
| 237 | { gC_011, nullptr, 3, gC_011, gP_0x1, 3, false }, |
| 238 | |
| 239 | { gC_0011, gP_0011, 4, gC_0011, gP_0011, 4, false }, |
| 240 | }; |
| 241 | |
| 242 | for (size_t i = 0; i < SK_ARRAY_COUNT(gProcInfo); ++i) { |
| 243 | for (int mode = 0; mode < SkShader::kTileModeCount; ++mode) { |
| 244 | if (gProcInfo[i].fIsClampRestricted && mode != SkShader::kClamp_TileMode) { |
| 245 | continue; |
| 246 | } |
| 247 | |
| 248 | for (size_t t = 0; t < SK_ARRAY_COUNT(gTests); ++t) { |
| 249 | GradRec rec; |
| 250 | rec.fColorCount = gTests[t].fCount; |
| 251 | rec.fColors = gTests[t].fCol; |
| 252 | rec.fPos = gTests[t].fPos; |
| 253 | rec.fTileMode = static_cast<SkShader::TileMode>(mode); |
| 254 | rec.fPoint = gPts; |
| 255 | rec.fRadius = gRadii; |
| 256 | |
| 257 | GradRec expected = rec; |
| 258 | if (!gTests[t].fRequiresNonClamp || mode != SkShader::kClamp_TileMode) { |
| 259 | expected.fColorCount = gTests[t].fExpectedCount; |
| 260 | expected.fColors = gTests[t].fExpectedCol; |
| 261 | expected.fPos = gTests[t].fExpectedPos; |
| 262 | } |
| 263 | |
| 264 | gProcInfo[i].fProc(reporter, rec, expected); |
| 265 | } |
| 266 | } |
reed@google.com | 8322697 | 2012-06-07 20:26:47 +0000 | [diff] [blame] | 267 | } |
| 268 | } |
| 269 | |
fmalita | 8d38102 | 2015-11-19 10:35:34 -0800 | [diff] [blame] | 270 | static void test_nearly_vertical(skiatest::Reporter* reporter) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 271 | auto surface(SkSurface::MakeRasterN32Premul(200, 200)); |
fmalita | 8d38102 | 2015-11-19 10:35:34 -0800 | [diff] [blame] | 272 | |
| 273 | const SkPoint pts[] = {{ 100, 50 }, { 100.0001f, 50000 }}; |
| 274 | const SkColor colors[] = { SK_ColorBLACK, SK_ColorWHITE }; |
| 275 | const SkScalar pos[] = { 0, 1 }; |
fmalita | 8d38102 | 2015-11-19 10:35:34 -0800 | [diff] [blame] | 276 | SkPaint paint; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 277 | paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 2, SkShader::kClamp_TileMode)); |
fmalita | 8d38102 | 2015-11-19 10:35:34 -0800 | [diff] [blame] | 278 | |
| 279 | surface->getCanvas()->drawPaint(paint); |
| 280 | } |
| 281 | |
James Zern | 44e91c9 | 2016-11-09 19:22:46 -0800 | [diff] [blame] | 282 | static void test_vertical(skiatest::Reporter* reporter) { |
| 283 | auto surface(SkSurface::MakeRasterN32Premul(200, 200)); |
| 284 | |
| 285 | const SkPoint pts[] = {{ 100, 50 }, { 100, 50 }}; |
| 286 | const SkColor colors[] = { SK_ColorBLACK, SK_ColorWHITE }; |
| 287 | const SkScalar pos[] = { 0, 1 }; |
| 288 | SkPaint paint; |
| 289 | paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 2, SkShader::kClamp_TileMode)); |
| 290 | |
| 291 | surface->getCanvas()->drawPaint(paint); |
| 292 | } |
| 293 | |
reed | aeab8ea | 2016-01-05 10:01:38 -0800 | [diff] [blame] | 294 | // A linear gradient interval can, due to numerical imprecision (likely in the divide) |
| 295 | // finish an interval with the final fx not landing outside of [p0...p1]. |
| 296 | // The old code had an assert which this test triggered. |
| 297 | // We now explicitly clamp the resulting fx value. |
| 298 | static void test_linear_fuzz(skiatest::Reporter* reporter) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 299 | auto surface(SkSurface::MakeRasterN32Premul(1300, 630)); |
reed | aeab8ea | 2016-01-05 10:01:38 -0800 | [diff] [blame] | 300 | |
| 301 | const SkPoint pts[] = {{ 179.5f, -179.5f }, { 1074.5f, 715.5f }}; |
| 302 | const SkColor colors[] = { SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLACK, SK_ColorWHITE }; |
| 303 | const SkScalar pos[] = {0, 0.200000003f, 0.800000012f, 1 }; |
| 304 | |
reed | 9283d20 | 2016-03-13 13:01:57 -0700 | [diff] [blame] | 305 | SkPaint paint; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 306 | paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 4, SkShader::kClamp_TileMode)); |
| 307 | |
reed | aeab8ea | 2016-01-05 10:01:38 -0800 | [diff] [blame] | 308 | SkRect r = {0, 83, 1254, 620}; |
| 309 | surface->getCanvas()->drawRect(r, paint); |
| 310 | } |
| 311 | |
fmalita | 5edf82e | 2016-03-03 06:41:54 -0800 | [diff] [blame] | 312 | // https://bugs.chromium.org/p/skia/issues/detail?id=5023 |
| 313 | // We should still shade pixels for which the radius is exactly 0. |
| 314 | static void test_two_point_conical_zero_radius(skiatest::Reporter* reporter) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 315 | auto surface(SkSurface::MakeRasterN32Premul(5, 5)); |
fmalita | 5edf82e | 2016-03-03 06:41:54 -0800 | [diff] [blame] | 316 | surface->getCanvas()->clear(SK_ColorRED); |
| 317 | |
| 318 | const SkColor colors[] = { SK_ColorGREEN, SK_ColorBLUE }; |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 319 | SkPaint p; |
| 320 | p.setShader(SkGradientShader::MakeTwoPointConical( |
fmalita | 5edf82e | 2016-03-03 06:41:54 -0800 | [diff] [blame] | 321 | SkPoint::Make(2.5f, 2.5f), 0, |
| 322 | SkPoint::Make(3.0f, 3.0f), 10, |
| 323 | colors, nullptr, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode)); |
fmalita | 5edf82e | 2016-03-03 06:41:54 -0800 | [diff] [blame] | 324 | surface->getCanvas()->drawPaint(p); |
| 325 | |
| 326 | // r == 0 for the center pixel. |
| 327 | // verify that we draw it (no red bleed) |
| 328 | SkPMColor centerPMColor; |
| 329 | surface->readPixels(SkImageInfo::MakeN32Premul(1, 1), ¢erPMColor, sizeof(SkPMColor), 2, 2); |
| 330 | REPORTER_ASSERT(reporter, SkGetPackedR32(centerPMColor) == 0); |
| 331 | } |
| 332 | |
fmalita | 7b38e3c | 2016-05-26 11:13:52 -0700 | [diff] [blame] | 333 | // http://crbug.com/599458 |
| 334 | static void test_clamping_overflow(skiatest::Reporter*) { |
| 335 | SkPaint p; |
| 336 | const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN }; |
| 337 | const SkPoint pts1[] = { SkPoint::Make(1001, 1000001), SkPoint::Make(1000.99f, 1000000) }; |
| 338 | |
| 339 | p.setShader(SkGradientShader::MakeLinear(pts1, colors, nullptr, 2, SkShader::kClamp_TileMode)); |
| 340 | |
| 341 | sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(50, 50)); |
| 342 | surface->getCanvas()->scale(100, 100); |
| 343 | surface->getCanvas()->drawPaint(p); |
| 344 | |
| 345 | const SkPoint pts2[] = { SkPoint::Make(10000.99f, 1000000), SkPoint::Make(10001, 1000001) }; |
| 346 | p.setShader(SkGradientShader::MakeLinear(pts2, colors, nullptr, 2, SkShader::kClamp_TileMode)); |
| 347 | surface->getCanvas()->drawPaint(p); |
| 348 | |
| 349 | // Passes if we don't trigger asserts. |
| 350 | } |
| 351 | |
fmalita | c523104 | 2016-08-10 05:45:50 -0700 | [diff] [blame] | 352 | // http://crbug.com/636194 |
| 353 | static void text_degenerate_linear(skiatest::Reporter*) { |
| 354 | SkPaint p; |
| 355 | const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN }; |
| 356 | const SkPoint pts[] = { |
| 357 | SkPoint::Make(-46058024627067344430605278824628224.0f, 0), |
| 358 | SkPoint::Make(SK_ScalarMax, 0) |
| 359 | }; |
| 360 | |
| 361 | p.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode)); |
| 362 | sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(50, 50)); |
| 363 | surface->getCanvas()->drawPaint(p); |
| 364 | |
| 365 | // Passes if we don't trigger asserts. |
| 366 | } |
| 367 | |
tfarina@chromium.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 368 | DEF_TEST(Gradient, reporter) { |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 369 | TestGradientShaders(reporter); |
fmalita | 5122967 | 2016-08-22 06:22:28 -0700 | [diff] [blame] | 370 | TestGradientOptimization(reporter); |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 371 | TestConstantGradient(reporter); |
reed | 9d91eb3 | 2015-01-28 11:44:48 -0800 | [diff] [blame] | 372 | test_big_grad(reporter); |
fmalita | 8d38102 | 2015-11-19 10:35:34 -0800 | [diff] [blame] | 373 | test_nearly_vertical(reporter); |
James Zern | 44e91c9 | 2016-11-09 19:22:46 -0800 | [diff] [blame] | 374 | test_vertical(reporter); |
reed | aeab8ea | 2016-01-05 10:01:38 -0800 | [diff] [blame] | 375 | test_linear_fuzz(reporter); |
fmalita | 5edf82e | 2016-03-03 06:41:54 -0800 | [diff] [blame] | 376 | test_two_point_conical_zero_radius(reporter); |
fmalita | 7b38e3c | 2016-05-26 11:13:52 -0700 | [diff] [blame] | 377 | test_clamping_overflow(reporter); |
fmalita | c523104 | 2016-08-10 05:45:50 -0700 | [diff] [blame] | 378 | text_degenerate_linear(reporter); |
junov@chromium.org | e94b5e4 | 2013-01-30 15:52:06 +0000 | [diff] [blame] | 379 | } |