kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "Fuzz.h" |
| 9 | #include "SkCanvas.h" |
| 10 | #include "SkGradientShader.h" |
| 11 | #include "SkSurface.h" |
| 12 | #include "SkTLazy.h" |
| 13 | |
| 14 | #include <algorithm> |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 15 | #include <vector> |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 16 | |
| 17 | const int MAX_COUNT = 400; |
| 18 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 19 | void makeMatrix(Fuzz* fuzz, SkMatrix* m) { |
| 20 | m->setAll(fuzz->next<SkScalar>(), fuzz->next<SkScalar>(), fuzz->next<SkScalar>(), |
| 21 | fuzz->next<SkScalar>(), fuzz->next<SkScalar>(), fuzz->next<SkScalar>(), |
| 22 | fuzz->next<SkScalar>(), fuzz->next<SkScalar>(), fuzz->next<SkScalar>()); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 23 | } |
| 24 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 25 | void initGradientParams(Fuzz* fuzz, std::vector<SkColor>* colors, |
| 26 | std::vector<SkScalar>* pos, SkShader::TileMode* mode) { |
| 27 | int count = fuzz->nextRange(0, MAX_COUNT); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 28 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 29 | *mode = static_cast<SkShader::TileMode>(fuzz->nextRange(0, 2)); |
kjlubick | 840f12a | 2016-10-25 06:11:05 -0700 | [diff] [blame] | 30 | |
| 31 | colors->clear(); |
| 32 | pos ->clear(); |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 33 | for (int i = 0; i < count; i++) { |
| 34 | colors->push_back(fuzz->next<SkColor>()); |
| 35 | pos ->push_back(fuzz->next<SkScalar>()); |
kjlubick | 840f12a | 2016-10-25 06:11:05 -0700 | [diff] [blame] | 36 | } |
| 37 | if (count) { |
| 38 | std::sort(pos->begin(), pos->end()); |
| 39 | // The order matters. If count == 1, we want pos == 0. |
| 40 | (*pos)[count - 1] = 1; |
| 41 | (*pos)[0] = 0; |
| 42 | } |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | void fuzzLinearGradient(Fuzz* fuzz) { |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 46 | SkPoint pts[2] = {SkPoint::Make(fuzz->next<SkScalar>(), fuzz->next<SkScalar>()), |
| 47 | SkPoint::Make(fuzz->next<SkScalar>(), fuzz->next<SkScalar>())}; |
| 48 | bool useLocalMatrix = fuzz->next<bool>(); |
| 49 | bool useGlobalMatrix = fuzz->next<bool>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 50 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 51 | std::vector<SkColor> colors; |
| 52 | std::vector<SkScalar> pos; |
| 53 | SkShader::TileMode mode; |
| 54 | initGradientParams(fuzz, &colors, &pos, &mode); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 55 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 56 | SkPaint p; |
| 57 | uint32_t flags = fuzz->next<uint32_t>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 58 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 59 | SkTLazy<SkMatrix> localMatrix; |
| 60 | if (useLocalMatrix) { |
| 61 | makeMatrix(fuzz, localMatrix.init()); |
| 62 | } |
| 63 | p.setShader(SkGradientShader::MakeLinear(pts, colors.data(), pos.data(), |
| 64 | colors.size(), mode, flags, localMatrix.getMaybeNull())); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 65 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 66 | sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(50, 50)); |
| 67 | if (useGlobalMatrix) { |
| 68 | SkMatrix gm; |
| 69 | makeMatrix(fuzz, &gm); |
| 70 | SkCanvas* c = surface->getCanvas(); |
| 71 | c->setMatrix(gm); |
| 72 | c->drawPaint(p); |
| 73 | } else { |
| 74 | surface->getCanvas()->drawPaint(p); |
| 75 | } |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | void fuzzRadialGradient(Fuzz* fuzz) { |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 79 | SkPoint center = SkPoint::Make(fuzz->next<SkScalar>(), fuzz->next<SkScalar>()); |
| 80 | SkScalar radius = fuzz->next<SkScalar>(); |
| 81 | bool useLocalMatrix = fuzz->next<bool>(); |
| 82 | bool useGlobalMatrix = fuzz->next<bool>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 83 | |
| 84 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 85 | std::vector<SkColor> colors; |
| 86 | std::vector<SkScalar> pos; |
| 87 | SkShader::TileMode mode; |
| 88 | initGradientParams(fuzz, &colors, &pos, &mode); |
| 89 | |
| 90 | SkPaint p; |
| 91 | uint32_t flags = fuzz->next<uint32_t>(); |
| 92 | |
| 93 | SkTLazy<SkMatrix> localMatrix; |
| 94 | if (useLocalMatrix) { |
| 95 | makeMatrix(fuzz, localMatrix.init()); |
| 96 | } |
| 97 | p.setShader(SkGradientShader::MakeRadial(center, radius, colors.data(), |
| 98 | pos.data(), colors.size(), mode, flags, localMatrix.getMaybeNull())); |
| 99 | |
| 100 | |
| 101 | sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(50, 50)); |
| 102 | if (useGlobalMatrix) { |
| 103 | SkMatrix gm; |
| 104 | makeMatrix(fuzz, &gm); |
| 105 | SkCanvas* c = surface->getCanvas(); |
| 106 | c->setMatrix(gm); |
| 107 | c->drawPaint(p); |
| 108 | } else { |
| 109 | surface->getCanvas()->drawPaint(p); |
| 110 | } |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | void fuzzTwoPointConicalGradient(Fuzz* fuzz) { |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 114 | SkPoint start = SkPoint::Make(fuzz->next<SkScalar>(), fuzz->next<SkScalar>()); |
| 115 | SkPoint end = SkPoint::Make(fuzz->next<SkScalar>(), fuzz->next<SkScalar>()); |
| 116 | SkScalar startRadius = fuzz->next<SkScalar>(); |
| 117 | SkScalar endRadius = fuzz->next<SkScalar>(); |
| 118 | bool useLocalMatrix = fuzz->next<bool>(); |
| 119 | bool useGlobalMatrix = fuzz->next<bool>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 120 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 121 | std::vector<SkColor> colors; |
| 122 | std::vector<SkScalar> pos; |
| 123 | SkShader::TileMode mode; |
| 124 | initGradientParams(fuzz, &colors, &pos, &mode); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 125 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 126 | SkPaint p; |
| 127 | uint32_t flags = fuzz->next<uint32_t>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 128 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 129 | SkTLazy<SkMatrix> localMatrix; |
| 130 | if (useLocalMatrix) { |
| 131 | makeMatrix(fuzz, localMatrix.init()); |
| 132 | } |
| 133 | p.setShader(SkGradientShader::MakeTwoPointConical(start, startRadius, |
| 134 | end, endRadius, colors.data(), pos.data(), colors.size(), mode, |
| 135 | flags, localMatrix.getMaybeNull())); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 136 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 137 | sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(50, 50)); |
| 138 | if (useGlobalMatrix) { |
| 139 | SkMatrix gm; |
| 140 | makeMatrix(fuzz, &gm); |
| 141 | SkCanvas* c = surface->getCanvas(); |
| 142 | c->setMatrix(gm); |
| 143 | c->drawPaint(p); |
| 144 | } else { |
| 145 | surface->getCanvas()->drawPaint(p); |
| 146 | } |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | void fuzzSweepGradient(Fuzz* fuzz) { |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 150 | SkScalar cx = fuzz->next<SkScalar>(); |
| 151 | SkScalar cy = fuzz->next<SkScalar>(); |
| 152 | bool useLocalMatrix = fuzz->next<bool>(); |
| 153 | bool useGlobalMatrix = fuzz->next<bool>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 154 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 155 | std::vector<SkColor> colors; |
| 156 | std::vector<SkScalar> pos; |
| 157 | SkShader::TileMode mode; |
| 158 | initGradientParams(fuzz, &colors, &pos, &mode); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 159 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 160 | SkPaint p; |
| 161 | if (useLocalMatrix) { |
| 162 | SkMatrix m; |
| 163 | makeMatrix(fuzz, &m); |
| 164 | uint32_t flags = fuzz->next<uint32_t>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 165 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 166 | p.setShader(SkGradientShader::MakeSweep(cx, cy, colors.data(), |
| 167 | pos.data(), colors.size(), flags, &m)); |
| 168 | } else { |
| 169 | p.setShader(SkGradientShader::MakeSweep(cx, cy, colors.data(), |
| 170 | pos.data(), colors.size())); |
| 171 | } |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 172 | |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 173 | sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(50, 50)); |
| 174 | if (useGlobalMatrix) { |
| 175 | SkMatrix gm; |
| 176 | makeMatrix(fuzz, &gm); |
| 177 | SkCanvas* c = surface->getCanvas(); |
| 178 | c->setMatrix(gm); |
| 179 | c->drawPaint(p); |
| 180 | } else { |
| 181 | surface->getCanvas()->drawPaint(p); |
| 182 | } |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | DEF_FUZZ(Gradients, fuzz) { |
Kevin Lubick | 2f535ce | 2016-11-01 15:01:12 -0400 | [diff] [blame] | 186 | uint8_t i = fuzz->next<uint8_t>(); |
kjlubick | 1eda1eb | 2016-08-12 06:26:03 -0700 | [diff] [blame] | 187 | |
| 188 | switch(i) { |
| 189 | case 0: |
| 190 | SkDebugf("LinearGradient\n"); |
| 191 | fuzzLinearGradient(fuzz); |
| 192 | return; |
| 193 | case 1: |
| 194 | SkDebugf("RadialGradient\n"); |
| 195 | fuzzRadialGradient(fuzz); |
| 196 | return; |
| 197 | case 2: |
| 198 | SkDebugf("TwoPointConicalGradient\n"); |
| 199 | fuzzTwoPointConicalGradient(fuzz); |
| 200 | return; |
| 201 | } |
| 202 | SkDebugf("SweepGradient\n"); |
| 203 | fuzzSweepGradient(fuzz); |
| 204 | return; |
| 205 | } |