epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +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@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 8 | #include "SkColor.h" |
| 9 | #include "SkColorFilter.h" |
tfarina@chromium.org | 8f6884a | 2014-01-24 20:56:26 +0000 | [diff] [blame] | 10 | #include "SkColorPriv.h" |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 11 | #include "SkLumaColorFilter.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 12 | #include "SkReadBuffer.h" |
| 13 | #include "SkWriteBuffer.h" |
tfarina@chromium.org | 8f6884a | 2014-01-24 20:56:26 +0000 | [diff] [blame] | 14 | #include "SkRandom.h" |
tfarina@chromium.org | 8f6884a | 2014-01-24 20:56:26 +0000 | [diff] [blame] | 15 | #include "Test.h" |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 16 | |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 17 | static sk_sp<SkColorFilter> reincarnate_colorfilter(SkFlattenable* obj) { |
brianosman | fad9856 | 2016-05-04 11:06:28 -0700 | [diff] [blame] | 18 | SkBinaryWriteBuffer wb; |
djsollen@google.com | cefc865 | 2012-03-26 15:52:10 +0000 | [diff] [blame] | 19 | wb.writeFlattenable(obj); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 20 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 21 | size_t size = wb.bytesWritten(); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 22 | SkAutoSMalloc<1024> storage(size); |
| 23 | // make a copy into storage |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 24 | wb.writeToMemory(storage.get()); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 25 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 26 | SkReadBuffer rb(storage.get(), size); |
reed@google.com | 3534822 | 2013-10-16 13:05:06 +0000 | [diff] [blame] | 27 | return rb.readColorFilter(); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 28 | } |
| 29 | |
| 30 | /////////////////////////////////////////////////////////////////////////////// |
| 31 | |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 32 | static sk_sp<SkColorFilter> make_filter() { |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 33 | // pick a filter that cannot compose with itself via newComposed() |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 34 | return SkColorFilter::MakeModeFilter(SK_ColorRED, SkBlendMode::kColorBurn); |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 35 | } |
| 36 | |
| 37 | static void test_composecolorfilter_limit(skiatest::Reporter* reporter) { |
| 38 | // Test that CreateComposeFilter() has some finite limit (i.e. that the factory can return null) |
| 39 | const int way_too_many = 100; |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 40 | auto parent(make_filter()); |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 41 | for (int i = 2; i < way_too_many; ++i) { |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 42 | auto filter(make_filter()); |
| 43 | parent = SkColorFilter::MakeComposeFilter(parent, filter); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 44 | if (nullptr == parent) { |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 45 | REPORTER_ASSERT(reporter, i > 2); // we need to have succeeded at least once! |
| 46 | return; |
| 47 | } |
| 48 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 49 | REPORTER_ASSERT(reporter, false); // we never saw a nullptr :( |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 50 | } |
| 51 | |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 52 | #define ILLEGAL_MODE ((SkBlendMode)-1) |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 53 | |
tfarina@chromium.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 54 | DEF_TEST(ColorFilter, reporter) { |
commit-bot@chromium.org | e0e7cfe | 2013-09-09 20:09:12 +0000 | [diff] [blame] | 55 | SkRandom rand; |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 56 | |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 57 | for (int mode = 0; mode <= (int)SkBlendMode::kLastMode; mode++) { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 58 | SkColor color = rand.nextU(); |
| 59 | |
| 60 | // ensure we always get a filter, by avoiding the possibility of a |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 61 | // special case that would return nullptr (if color's alpha is 0 or 0xFF) |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 62 | color = SkColorSetA(color, 0x7F); |
| 63 | |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 64 | auto cf = SkColorFilter::MakeModeFilter(color, (SkBlendMode)mode); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 65 | |
| 66 | // allow for no filter if we're in Dst mode (its a no op) |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 67 | if (SkBlendMode::kDst == (SkBlendMode)mode && nullptr == cf) { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 68 | continue; |
| 69 | } |
| 70 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 71 | REPORTER_ASSERT(reporter, cf); |
| 72 | |
| 73 | SkColor c = ~color; |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 74 | SkBlendMode m = ILLEGAL_MODE; |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 75 | |
| 76 | SkColor expectedColor = color; |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 77 | SkBlendMode expectedMode = (SkBlendMode)mode; |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 78 | |
| 79 | // SkDebugf("--- mc [%d %x] ", mode, color); |
| 80 | |
Mike Reed | faba371 | 2016-11-03 14:45:31 -0400 | [diff] [blame] | 81 | REPORTER_ASSERT(reporter, cf->asColorMode(&c, (SkBlendMode*)&m)); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 82 | // handle special-case folding by the factory |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 83 | if (SkBlendMode::kClear == (SkBlendMode)mode) { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 84 | if (c != expectedColor) { |
| 85 | expectedColor = 0; |
| 86 | } |
| 87 | if (m != expectedMode) { |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 88 | expectedMode = SkBlendMode::kSrc; |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 89 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 90 | } |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 91 | |
| 92 | // SkDebugf("--- got [%d %x] expected [%d %x]\n", m, c, expectedMode, expectedColor); |
| 93 | |
| 94 | REPORTER_ASSERT(reporter, c == expectedColor); |
| 95 | REPORTER_ASSERT(reporter, m == expectedMode); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 96 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 97 | { |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 98 | auto cf2 = reincarnate_colorfilter(cf.get()); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 99 | REPORTER_ASSERT(reporter, cf2); |
| 100 | |
| 101 | SkColor c2 = ~color; |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 102 | SkBlendMode m2 = ILLEGAL_MODE; |
Mike Reed | faba371 | 2016-11-03 14:45:31 -0400 | [diff] [blame] | 103 | REPORTER_ASSERT(reporter, cf2->asColorMode(&c2, (SkBlendMode*)&m2)); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 104 | REPORTER_ASSERT(reporter, c2 == expectedColor); |
| 105 | REPORTER_ASSERT(reporter, m2 == expectedMode); |
| 106 | } |
| 107 | } |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 108 | |
| 109 | test_composecolorfilter_limit(reporter); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 110 | } |
| 111 | |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 112 | /////////////////////////////////////////////////////////////////////////////// |
| 113 | |
tfarina@chromium.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 114 | DEF_TEST(LumaColorFilter, reporter) { |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 115 | SkPMColor in, out; |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 116 | auto lf(SkLumaColorFilter::Make()); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 117 | |
commit-bot@chromium.org | d494b09 | 2013-10-10 20:13:51 +0000 | [diff] [blame] | 118 | // Applying luma to white produces black with the same transparency. |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 119 | for (unsigned i = 0; i < 256; ++i) { |
| 120 | in = SkPackARGB32(i, i, i, i); |
| 121 | lf->filterSpan(&in, 1, &out); |
commit-bot@chromium.org | d494b09 | 2013-10-10 20:13:51 +0000 | [diff] [blame] | 122 | REPORTER_ASSERT(reporter, SkGetPackedA32(out) == i); |
| 123 | REPORTER_ASSERT(reporter, SkGetPackedR32(out) == 0); |
| 124 | REPORTER_ASSERT(reporter, SkGetPackedG32(out) == 0); |
| 125 | REPORTER_ASSERT(reporter, SkGetPackedB32(out) == 0); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | // Applying luma to black yields transparent black (luminance(black) == 0) |
| 129 | for (unsigned i = 0; i < 256; ++i) { |
| 130 | in = SkPackARGB32(i, 0, 0, 0); |
| 131 | lf->filterSpan(&in, 1, &out); |
| 132 | REPORTER_ASSERT(reporter, out == SK_ColorTRANSPARENT); |
| 133 | } |
| 134 | |
commit-bot@chromium.org | d494b09 | 2013-10-10 20:13:51 +0000 | [diff] [blame] | 135 | // For general colors, a luma filter generates black with an attenuated alpha channel. |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 136 | for (unsigned i = 1; i < 256; ++i) { |
| 137 | in = SkPackARGB32(i, i, i / 2, i / 3); |
| 138 | lf->filterSpan(&in, 1, &out); |
| 139 | REPORTER_ASSERT(reporter, out != in); |
| 140 | REPORTER_ASSERT(reporter, SkGetPackedA32(out) <= i); |
commit-bot@chromium.org | d494b09 | 2013-10-10 20:13:51 +0000 | [diff] [blame] | 141 | REPORTER_ASSERT(reporter, SkGetPackedR32(out) == 0); |
| 142 | REPORTER_ASSERT(reporter, SkGetPackedG32(out) == 0); |
| 143 | REPORTER_ASSERT(reporter, SkGetPackedB32(out) == 0); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 144 | } |
| 145 | } |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 146 | |
| 147 | /////////////////////////////////////////////////////////////////////////////// |
| 148 | |
| 149 | #include "SkColorMatrixFilter.h" |
| 150 | |
| 151 | static void get_brightness_matrix(float amount, float matrix[20]) { |
| 152 | // Spec implementation |
| 153 | // (http://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html#brightnessEquivalent) |
| 154 | // <feFunc[R|G|B] type="linear" slope="[amount]"> |
| 155 | memset(matrix, 0, 20 * sizeof(SkScalar)); |
| 156 | matrix[0] = matrix[6] = matrix[12] = amount; |
| 157 | matrix[18] = 1.f; |
| 158 | } |
| 159 | |
| 160 | static void get_grayscale_matrix(float amount, float matrix[20]) { |
| 161 | // Note, these values are computed to ensure MatrixNeedsClamping is false |
| 162 | // for amount in [0..1] |
| 163 | matrix[0] = 0.2126f + 0.7874f * amount; |
| 164 | matrix[1] = 0.7152f - 0.7152f * amount; |
| 165 | matrix[2] = 1.f - (matrix[0] + matrix[1]); |
| 166 | matrix[3] = matrix[4] = 0.f; |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 167 | |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 168 | matrix[5] = 0.2126f - 0.2126f * amount; |
| 169 | matrix[6] = 0.7152f + 0.2848f * amount; |
| 170 | matrix[7] = 1.f - (matrix[5] + matrix[6]); |
| 171 | matrix[8] = matrix[9] = 0.f; |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 172 | |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 173 | matrix[10] = 0.2126f - 0.2126f * amount; |
| 174 | matrix[11] = 0.7152f - 0.7152f * amount; |
| 175 | matrix[12] = 1.f - (matrix[10] + matrix[11]); |
| 176 | matrix[13] = matrix[14] = 0.f; |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 177 | |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 178 | matrix[15] = matrix[16] = matrix[17] = matrix[19] = 0.f; |
| 179 | matrix[18] = 1.f; |
| 180 | } |
| 181 | |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 182 | static sk_sp<SkColorFilter> make_cf0() { |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 183 | SkScalar matrix[20]; |
| 184 | get_brightness_matrix(0.5f, matrix); |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 185 | return SkColorFilter::MakeMatrixFilterRowMajor255(matrix); |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 186 | } |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 187 | static sk_sp<SkColorFilter> make_cf1() { |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 188 | SkScalar matrix[20]; |
| 189 | get_grayscale_matrix(1, matrix); |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 190 | return SkColorFilter::MakeMatrixFilterRowMajor255(matrix); |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 191 | } |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 192 | static sk_sp<SkColorFilter> make_cf2() { |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 193 | SkColorMatrix m0, m1; |
| 194 | get_brightness_matrix(0.5f, m0.fMat); |
| 195 | get_grayscale_matrix(1, m1.fMat); |
| 196 | m0.preConcat(m1); |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 197 | return SkColorFilter::MakeMatrixFilterRowMajor255(m0.fMat); |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 198 | } |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 199 | static sk_sp<SkColorFilter> make_cf3() { |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 200 | SkColorMatrix m0, m1; |
| 201 | get_brightness_matrix(0.5f, m0.fMat); |
| 202 | get_grayscale_matrix(1, m1.fMat); |
| 203 | m0.postConcat(m1); |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 204 | return SkColorFilter::MakeMatrixFilterRowMajor255(m0.fMat); |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 205 | } |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 206 | typedef sk_sp<SkColorFilter> (*CFProc)(); |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 207 | |
| 208 | // Test that a colormatrix that "should" preserve opaquness actually does. |
| 209 | DEF_TEST(ColorMatrixFilter, reporter) { |
| 210 | const CFProc procs[] = { |
| 211 | make_cf0, make_cf1, make_cf2, make_cf3, |
| 212 | }; |
| 213 | |
| 214 | for (size_t i = 0; i < SK_ARRAY_COUNT(procs); ++i) { |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 215 | auto cf(procs[i]()); |
reed | 0b18c35 | 2015-04-09 08:27:27 -0700 | [diff] [blame] | 216 | |
| 217 | // generate all possible r,g,b triples |
| 218 | for (int r = 0; r < 256; ++r) { |
| 219 | for (int g = 0; g < 256; ++g) { |
| 220 | SkPMColor storage[256]; |
| 221 | for (int b = 0; b < 256; ++b) { |
| 222 | storage[b] = SkPackARGB32(0xFF, r, g, b); |
| 223 | } |
| 224 | cf->filterSpan(storage, 256, storage); |
| 225 | for (int b = 0; b < 256; ++b) { |
| 226 | REPORTER_ASSERT(reporter, 0xFF == SkGetPackedA32(storage[b])); |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | } |
| 231 | } |