reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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 "gm.h" |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 9 | #include "SkBlurImageFilter.h" |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 10 | #include "SkColorMatrixFilter.h" |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 11 | #include "SkImage.h" |
| 12 | #include "SkImageFilter.h" |
| 13 | #include "SkSurface.h" |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 14 | |
| 15 | /** |
| 16 | * Test drawing a primitive w/ an imagefilter (in this case, just matrix w/ identity) to see |
| 17 | * that we apply the xfermode *after* the image has been created and filtered, and not during |
| 18 | * the creation step (i.e. before it is filtered). |
| 19 | * |
halcanary | 6950de6 | 2015-11-07 05:29:00 -0800 | [diff] [blame] | 20 | * see https://bug.skia.org/3741 |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 21 | */ |
halcanary | 2a24338 | 2015-09-09 08:16:41 -0700 | [diff] [blame] | 22 | static void do_draw(SkCanvas* canvas, SkXfermode::Mode mode, SkImageFilter* imf) { |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 23 | SkAutoCanvasRestore acr(canvas, true); |
| 24 | canvas->clipRect(SkRect::MakeWH(220, 220)); |
xidachen | 467ddc0 | 2015-12-10 12:08:44 -0800 | [diff] [blame] | 25 | |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 26 | // want to force a layer, so modes like DstIn can combine meaningfully, but the final |
| 27 | // image can still be shown against our default (opaque) background. non-opaque GMs |
| 28 | // are a lot more trouble to compare/triage. |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 29 | canvas->saveLayer(nullptr, nullptr); |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 30 | canvas->drawColor(SK_ColorGREEN); |
| 31 | |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 32 | SkPaint paint; |
| 33 | paint.setAntiAlias(true); |
xidachen | 467ddc0 | 2015-12-10 12:08:44 -0800 | [diff] [blame] | 34 | |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 35 | SkRect r0 = SkRect::MakeXYWH(10, 60, 200, 100); |
| 36 | SkRect r1 = SkRect::MakeXYWH(60, 10, 100, 200); |
xidachen | 467ddc0 | 2015-12-10 12:08:44 -0800 | [diff] [blame] | 37 | |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 38 | paint.setColor(SK_ColorRED); |
| 39 | canvas->drawOval(r0, paint); |
| 40 | |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 41 | paint.setColor(0x660000FF); |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 42 | paint.setImageFilter(imf); |
| 43 | paint.setXfermodeMode(mode); |
| 44 | canvas->drawOval(r1, paint); |
halcanary | 2a24338 | 2015-09-09 08:16:41 -0700 | [diff] [blame] | 45 | } |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 46 | |
halcanary | 2a24338 | 2015-09-09 08:16:41 -0700 | [diff] [blame] | 47 | DEF_SIMPLE_GM(imagefilters_xfermodes, canvas, 480, 480) { |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 48 | canvas->translate(10, 10); |
| 49 | |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 50 | // just need an imagefilter to trigger the code-path (which creates a tmp layer) |
| 51 | SkAutoTUnref<SkImageFilter> imf(SkImageFilter::CreateMatrixFilter(SkMatrix::I(), |
| 52 | kNone_SkFilterQuality)); |
| 53 | |
| 54 | const SkXfermode::Mode modes[] = { |
| 55 | SkXfermode::kSrcATop_Mode, SkXfermode::kDstIn_Mode |
| 56 | }; |
xidachen | 467ddc0 | 2015-12-10 12:08:44 -0800 | [diff] [blame] | 57 | |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 58 | for (size_t i = 0; i < SK_ARRAY_COUNT(modes); ++i) { |
| 59 | canvas->save(); |
halcanary | 2a24338 | 2015-09-09 08:16:41 -0700 | [diff] [blame] | 60 | do_draw(canvas, modes[i], nullptr); |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 61 | canvas->translate(240, 0); |
halcanary | 2a24338 | 2015-09-09 08:16:41 -0700 | [diff] [blame] | 62 | do_draw(canvas, modes[i], imf); |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 63 | canvas->restore(); |
xidachen | 467ddc0 | 2015-12-10 12:08:44 -0800 | [diff] [blame] | 64 | |
reed | 4912437 | 2015-04-20 09:10:31 -0700 | [diff] [blame] | 65 | canvas->translate(0, 240); |
reed | 7e4186a | 2015-04-20 07:27:15 -0700 | [diff] [blame] | 66 | } |
halcanary | 2a24338 | 2015-09-09 08:16:41 -0700 | [diff] [blame] | 67 | } |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 68 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 69 | static sk_sp<SkImage> make_image(SkCanvas* canvas) { |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 70 | const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 71 | auto surface(canvas->makeSurface(info)); |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 72 | if (!surface) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 73 | surface = SkSurface::MakeRaster(info); |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 74 | } |
| 75 | surface->getCanvas()->drawRect(SkRect::MakeXYWH(25, 25, 50, 50), SkPaint()); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 76 | return surface->makeImageSnapshot(); |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | // Compare blurs when we're tightly clipped (fast) and not as tightly (slower) |
| 80 | // |
| 81 | // Expect the two to draw the same (modulo the extra border of pixels when the clip is larger) |
| 82 | // |
| 83 | DEF_SIMPLE_GM(fast_slow_blurimagefilter, canvas, 620, 260) { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 84 | sk_sp<SkImage> image(make_image(canvas)); |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 85 | const SkRect r = SkRect::MakeIWH(image->width(), image->height()); |
| 86 | |
| 87 | canvas->translate(10, 10); |
| 88 | for (SkScalar sigma = 8; sigma <= 128; sigma *= 2) { |
| 89 | SkPaint paint; |
xidachen | 467ddc0 | 2015-12-10 12:08:44 -0800 | [diff] [blame] | 90 | SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(sigma, sigma)); |
| 91 | paint.setImageFilter(blur); |
reed | f65fb65 | 2015-12-07 09:28:34 -0800 | [diff] [blame] | 92 | |
| 93 | canvas->save(); |
| 94 | // we outset the clip by 1, to fall out of the fast-case in drawImage |
| 95 | // i.e. the clip is larger than the image |
| 96 | for (SkScalar outset = 0; outset <= 1; ++outset) { |
| 97 | canvas->save(); |
| 98 | canvas->clipRect(r.makeOutset(outset, outset)); |
| 99 | canvas->drawImage(image, 0, 0, &paint); |
| 100 | canvas->restore(); |
| 101 | canvas->translate(0, r.height() + 20); |
| 102 | } |
| 103 | canvas->restore(); |
| 104 | canvas->translate(r.width() + 20, 0); |
| 105 | } |
| 106 | } |
reed | bfd5f17 | 2016-01-07 11:28:08 -0800 | [diff] [blame] | 107 | |
| 108 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 109 | #include "Resources.h" |
| 110 | #include "SkBlurImageFilter.h" |
| 111 | #include "SkMatrixConvolutionImageFilter.h" |
| 112 | #include "SkMorphologyImageFilter.h" |
| 113 | #include "SkColorMatrixFilter.h" |
| 114 | #include "SkColorFilterImageFilter.h" |
| 115 | #include "SkRRect.h" |
| 116 | |
| 117 | static void draw_set(SkCanvas* canvas, SkImageFilter* filters[], int count) { |
| 118 | const SkRect r = SkRect::MakeXYWH(30, 30, 200, 200); |
| 119 | const SkScalar offset = 250; |
| 120 | SkScalar dx = 0, dy = 0; |
| 121 | |
| 122 | for (int i = 0; i < count; ++i) { |
| 123 | canvas->save(); |
| 124 | SkRRect rr = SkRRect::MakeRectXY(r.makeOffset(dx, dy), 20, 20); |
| 125 | canvas->clipRRect(rr, SkRegion::kIntersect_Op, true); |
| 126 | canvas->saveLayer({ &rr.getBounds(), nullptr, filters[i], 0 }); |
| 127 | canvas->drawColor(0x40FFFFFF); |
| 128 | canvas->restore(); |
| 129 | canvas->restore(); |
| 130 | |
| 131 | if (0 == dx) { |
| 132 | dx = offset; |
| 133 | } else { |
| 134 | dx = 0; |
| 135 | dy = offset; |
| 136 | } |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | DEF_SIMPLE_GM(savelayer_with_backdrop, canvas, 830, 550) { |
| 141 | SkColorMatrix cm; |
| 142 | cm.setSaturation(10); |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 143 | auto cf(SkColorFilter::MakeMatrixFilterRowMajor255(cm.fMat)); |
reed | bfd5f17 | 2016-01-07 11:28:08 -0800 | [diff] [blame] | 144 | const SkScalar kernel[] = { 4, 0, 4, 0, -15, 0, 4, 0, 4 }; |
| 145 | SkImageFilter* filters[] = { |
| 146 | SkBlurImageFilter::Create(10, 10), |
| 147 | SkDilateImageFilter::Create(8, 8), |
| 148 | SkMatrixConvolutionImageFilter::Create({ 3, 3 }, kernel, 1, 0, { 0, 0 }, |
| 149 | SkMatrixConvolutionImageFilter::kClampToBlack_TileMode, |
| 150 | true), |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 151 | SkColorFilterImageFilter::Create(cf.get()), |
reed | bfd5f17 | 2016-01-07 11:28:08 -0800 | [diff] [blame] | 152 | }; |
| 153 | |
| 154 | const struct { |
| 155 | SkScalar fSx, fSy, fTx, fTy; |
| 156 | } xforms[] = { |
| 157 | { 1, 1, 0, 0 }, |
| 158 | { 0.5f, 0.5f, 530, 0 }, |
| 159 | { 0.25f, 0.25f, 530, 275 }, |
| 160 | { 0.125f, 0.125f, 530, 420 }, |
| 161 | }; |
| 162 | |
| 163 | SkPaint paint; |
| 164 | paint.setFilterQuality(kMedium_SkFilterQuality); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 165 | sk_sp<SkImage> image(GetResourceAsImage("mandrill_512.png")); |
reed | bfd5f17 | 2016-01-07 11:28:08 -0800 | [diff] [blame] | 166 | |
| 167 | canvas->translate(20, 20); |
| 168 | for (const auto& xform : xforms) { |
| 169 | canvas->save(); |
| 170 | canvas->translate(xform.fTx, xform.fTy); |
| 171 | canvas->scale(xform.fSx, xform.fSy); |
| 172 | canvas->drawImage(image, 0, 0, &paint); |
| 173 | draw_set(canvas, filters, SK_ARRAY_COUNT(filters)); |
| 174 | canvas->restore(); |
| 175 | } |
| 176 | |
| 177 | for (auto& filter : filters) { |
| 178 | filter->unref(); |
| 179 | } |
| 180 | } |