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)); |
| 25 | |
| 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); |
| 34 | |
| 35 | SkRect r0 = SkRect::MakeXYWH(10, 60, 200, 100); |
| 36 | SkRect r1 = SkRect::MakeXYWH(60, 10, 100, 200); |
| 37 | |
| 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 | }; |
| 57 | |
| 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(); |
| 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 | |
| 69 | static SkImage* make_image(SkCanvas* canvas) { |
| 70 | const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
| 71 | SkAutoTUnref<SkSurface> surface(canvas->newSurface(info)); |
| 72 | if (!surface) { |
| 73 | surface.reset(SkSurface::NewRaster(info)); |
| 74 | } |
| 75 | surface->getCanvas()->drawRect(SkRect::MakeXYWH(25, 25, 50, 50), SkPaint()); |
| 76 | return surface->newImageSnapshot(); |
| 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) { |
| 84 | SkAutoTUnref<SkImage> image(make_image(canvas)); |
| 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; |
| 90 | paint.setImageFilter(SkBlurImageFilter::Create(sigma, sigma))->unref(); |
| 91 | |
| 92 | canvas->save(); |
| 93 | // we outset the clip by 1, to fall out of the fast-case in drawImage |
| 94 | // i.e. the clip is larger than the image |
| 95 | for (SkScalar outset = 0; outset <= 1; ++outset) { |
| 96 | canvas->save(); |
| 97 | canvas->clipRect(r.makeOutset(outset, outset)); |
| 98 | canvas->drawImage(image, 0, 0, &paint); |
| 99 | canvas->restore(); |
| 100 | canvas->translate(0, r.height() + 20); |
| 101 | } |
| 102 | canvas->restore(); |
| 103 | canvas->translate(r.width() + 20, 0); |
| 104 | } |
| 105 | } |