reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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" |
| 9 | #include "SkCanvas.h" |
| 10 | #include "SkBlurImageFilter.h" |
reed | 71c3c76 | 2015-06-24 10:29:17 -0700 | [diff] [blame] | 11 | #include "SkRSXform.h" |
| 12 | #include "SkSurface.h" |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 13 | |
| 14 | static void make_bm(SkBitmap* bm) { |
reed@google.com | eb9a46c | 2014-01-25 16:46:20 +0000 | [diff] [blame] | 15 | bm->allocN32Pixels(100, 100); |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 16 | bm->eraseColor(SK_ColorBLUE); |
| 17 | |
| 18 | SkCanvas canvas(*bm); |
| 19 | SkPaint paint; |
| 20 | paint.setAntiAlias(true); |
| 21 | paint.setColor(SK_ColorRED); |
| 22 | canvas.drawCircle(50, 50, 50, paint); |
| 23 | } |
| 24 | |
| 25 | static void draw_2_bitmaps(SkCanvas* canvas, const SkBitmap& bm, bool doClip, |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 26 | int dx, int dy, SkImageFilter* filter = nullptr) { |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 27 | SkAutoCanvasRestore acr(canvas, true); |
| 28 | SkPaint paint; |
| 29 | |
skia.committer@gmail.com | 4d28d98 | 2013-01-17 07:06:06 +0000 | [diff] [blame] | 30 | SkRect clipR = SkRect::MakeXYWH(SkIntToScalar(dx), |
robertphillips@google.com | 914a2f2 | 2013-01-16 19:57:02 +0000 | [diff] [blame] | 31 | SkIntToScalar(dy), |
reed@google.com | 1c711ca | 2013-01-16 19:24:15 +0000 | [diff] [blame] | 32 | SkIntToScalar(bm.width()), |
| 33 | SkIntToScalar(bm.height())); |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 34 | |
| 35 | paint.setImageFilter(filter); |
| 36 | clipR.inset(5, 5); |
| 37 | |
| 38 | if (doClip) { |
| 39 | canvas->save(); |
| 40 | canvas->clipRect(clipR); |
| 41 | } |
| 42 | canvas->drawSprite(bm, dx, dy, &paint); |
| 43 | if (doClip) { |
| 44 | canvas->restore(); |
| 45 | } |
| 46 | |
reed@google.com | 1c711ca | 2013-01-16 19:24:15 +0000 | [diff] [blame] | 47 | canvas->translate(SkIntToScalar(bm.width() + 20), 0); |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 48 | |
| 49 | if (doClip) { |
| 50 | canvas->save(); |
| 51 | canvas->clipRect(clipR); |
| 52 | } |
reed@google.com | 1c711ca | 2013-01-16 19:24:15 +0000 | [diff] [blame] | 53 | canvas->drawBitmap(bm, SkIntToScalar(dx), SkIntToScalar(dy), &paint); |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 54 | if (doClip) { |
| 55 | canvas->restore(); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Compare output of drawSprite and drawBitmap (esp. clipping and imagefilters) |
| 61 | */ |
| 62 | class SpriteBitmapGM : public skiagm::GM { |
| 63 | public: |
| 64 | SpriteBitmapGM() {} |
| 65 | |
| 66 | protected: |
commit-bot@chromium.org | a90c680 | 2014-04-30 13:20:45 +0000 | [diff] [blame] | 67 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 68 | SkString onShortName() override { |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 69 | return SkString("spritebitmap"); |
| 70 | } |
| 71 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 72 | SkISize onISize() override { |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 73 | return SkISize::Make(640, 480); |
| 74 | } |
| 75 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 76 | void onDraw(SkCanvas* canvas) override { |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 77 | SkBitmap bm; |
| 78 | make_bm(&bm); |
| 79 | |
| 80 | int dx = 10; |
| 81 | int dy = 10; |
| 82 | |
| 83 | SkScalar sigma = 8; |
commit-bot@chromium.org | cac5fd5 | 2014-03-10 10:51:58 +0000 | [diff] [blame] | 84 | SkAutoTUnref<SkImageFilter> filter(SkBlurImageFilter::Create(sigma, sigma)); |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 85 | |
| 86 | draw_2_bitmaps(canvas, bm, false, dx, dy); |
| 87 | dy += bm.height() + 20; |
| 88 | draw_2_bitmaps(canvas, bm, false, dx, dy, filter); |
| 89 | dy += bm.height() + 20; |
| 90 | draw_2_bitmaps(canvas, bm, true, dx, dy); |
| 91 | dy += bm.height() + 20; |
| 92 | draw_2_bitmaps(canvas, bm, true, dx, dy, filter); |
| 93 | } |
| 94 | |
| 95 | private: |
| 96 | typedef GM INHERITED; |
| 97 | }; |
reed@google.com | 12fa9ba | 2013-01-16 18:54:15 +0000 | [diff] [blame] | 98 | DEF_GM( return new SpriteBitmapGM; ) |
reed | 71c3c76 | 2015-06-24 10:29:17 -0700 | [diff] [blame] | 99 | |
reed | 88d064d | 2015-10-12 11:30:02 -0700 | [diff] [blame] | 100 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 101 | |
| 102 | #include "SkColorFilterImageFilter.h" |
| 103 | #include "SkModeColorFilter.h" |
| 104 | #include "SkMorphologyImageFilter.h" |
| 105 | #include "SkOffsetImageFilter.h" |
| 106 | |
| 107 | static SkImage* make_image(SkCanvas* rootCanvas) { |
| 108 | SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
| 109 | SkAutoTUnref<SkSurface> surface(rootCanvas->newSurface(info)); |
| 110 | if (!surface) { |
| 111 | surface.reset(SkSurface::NewRaster(info)); |
| 112 | } |
| 113 | |
| 114 | SkPaint paint; |
| 115 | paint.setAntiAlias(true); |
| 116 | paint.setColor(SK_ColorRED); |
| 117 | surface->getCanvas()->drawCircle(50, 50, 50, paint); |
| 118 | return surface->newImageSnapshot(); |
| 119 | } |
| 120 | |
| 121 | static void show_image(SkCanvas* canvas, SkImage* image, const SkIPoint& offset) { |
| 122 | SkScalar x = SkIntToScalar(offset.x()); |
| 123 | SkScalar y = SkIntToScalar(offset.y()); |
| 124 | |
| 125 | SkPaint paint; |
| 126 | paint.setStyle(SkPaint::kStroke_Style); |
| 127 | |
| 128 | SkRect r = SkRect::MakeIWH(image->width(), image->height()); |
| 129 | r.offset(x, y); |
| 130 | // get on pixel-centers to make the hairline land on a numerical stable boundary |
| 131 | r.outset(SK_ScalarHalf, SK_ScalarHalf); |
| 132 | canvas->drawRect(r, paint); |
| 133 | |
| 134 | canvas->drawImage(image, x, y, nullptr); |
| 135 | } |
| 136 | |
| 137 | typedef SkImageFilter* (*ImageFilterFactory)(); |
| 138 | |
| 139 | // +[]{...} did not work on windows (VS) |
| 140 | // (ImageFilterFactory)[]{...} did not work on linux (gcc) |
| 141 | // hence this cast function |
| 142 | template <typename T> ImageFilterFactory IFCCast(T arg) { return arg; } |
| 143 | |
reed | 59dc0d2 | 2015-10-19 08:24:21 -0700 | [diff] [blame] | 144 | // We expect that applying the filter will keep us in the same domain (raster or gpu) |
| 145 | static void check_same_domain(SkImage* a, SkImage* b) { |
| 146 | SkASSERT(a->isTextureBacked() == b->isTextureBacked()); |
| 147 | } |
| 148 | |
reed | 88d064d | 2015-10-12 11:30:02 -0700 | [diff] [blame] | 149 | /** |
| 150 | * Compare output of drawSprite and drawBitmap (esp. clipping and imagefilters) |
| 151 | */ |
| 152 | class ApplyFilterGM : public skiagm::GM { |
| 153 | public: |
| 154 | ApplyFilterGM() {} |
| 155 | |
| 156 | protected: |
| 157 | SkString onShortName() override { |
| 158 | return SkString("apply-filter"); |
| 159 | } |
| 160 | |
| 161 | SkISize onISize() override { |
reed | c837d8f | 2015-10-12 14:38:34 -0700 | [diff] [blame] | 162 | return SkISize::Make(780, 780); |
reed | 88d064d | 2015-10-12 11:30:02 -0700 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | void onDraw(SkCanvas* canvas) override { |
| 166 | SkAutoTUnref<SkImage> image0(make_image(canvas)); |
| 167 | |
| 168 | const ImageFilterFactory factories[] = { |
| 169 | IFCCast([]{ return SkBlurImageFilter::Create(8, 8); }), |
| 170 | IFCCast([]{ SkAutoTUnref<SkColorFilter> cf(SkModeColorFilter::Create(SK_ColorBLUE, |
| 171 | SkXfermode::kSrcIn_Mode)); |
| 172 | return SkColorFilterImageFilter::Create(cf); |
| 173 | }), |
| 174 | IFCCast([]{ return SkDilateImageFilter::Create(8, 8); }), |
| 175 | IFCCast([]{ return SkErodeImageFilter::Create(8, 8); }), |
| 176 | IFCCast([]{ return SkOffsetImageFilter::Create(8, 8); }), |
| 177 | }; |
| 178 | |
| 179 | const SkScalar spacer = image0->width() * 3.0f / 2; |
| 180 | |
| 181 | for (auto&& factory : factories) { |
| 182 | SkAutoTUnref<SkImageFilter> filter(factory()); |
| 183 | |
| 184 | SkIPoint offset1, offset2; |
| 185 | SkAutoTUnref<SkImage> image1(image0->applyFilter(filter, &offset1, true)); |
| 186 | SkAutoTUnref<SkImage> image2(image0->applyFilter(filter, &offset2, false)); |
| 187 | |
reed | 59dc0d2 | 2015-10-19 08:24:21 -0700 | [diff] [blame] | 188 | check_same_domain(image0, image1); |
| 189 | check_same_domain(image0, image2); |
| 190 | |
reed | 88d064d | 2015-10-12 11:30:02 -0700 | [diff] [blame] | 191 | canvas->save(); |
| 192 | canvas->translate(30, 30); |
| 193 | show_image(canvas, image0, SkIPoint::Make(0, 0)); // original |
| 194 | canvas->translate(spacer, 0); |
| 195 | show_image(canvas, image1, offset1); // snug |
| 196 | canvas->translate(spacer, 0); |
| 197 | show_image(canvas, image2, offset2); // not snug |
| 198 | |
| 199 | // Try drawing the original w/ the filter, to see that it "draws" the same as |
| 200 | // when we have manually applied the filter (above). |
| 201 | { |
| 202 | SkPaint paint; |
| 203 | paint.setImageFilter(filter); |
| 204 | |
| 205 | SkBitmap bm; |
| 206 | image0->asLegacyBitmap(&bm, SkImage::kRO_LegacyBitmapMode); |
| 207 | SkPoint loc = { 0, 0 }; |
| 208 | canvas->translate(spacer, 0); |
| 209 | canvas->getTotalMatrix().mapPoints(&loc, 1); |
| 210 | canvas->drawSprite(bm, (int)loc.x(), (int)loc.y(), &paint); // like snug |
| 211 | |
| 212 | canvas->translate(spacer, 0); |
| 213 | canvas->drawImage(image0, 0, 0, &paint); // like not snug |
| 214 | } |
| 215 | canvas->restore(); |
| 216 | |
| 217 | canvas->translate(0, spacer); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | private: |
| 222 | typedef GM INHERITED; |
| 223 | }; |
| 224 | DEF_GM( return new ApplyFilterGM; ) |
| 225 | |