senorblanco | 5878dbd | 2016-05-19 14:50:29 -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 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "gm/gm.h" |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 9 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 10 | #include "include/core/SkBlendMode.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 11 | #include "include/core/SkCanvas.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 12 | #include "include/core/SkColor.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 13 | #include "include/core/SkColorFilter.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 14 | #include "include/core/SkImage.h" |
| 15 | #include "include/core/SkImageFilter.h" |
| 16 | #include "include/core/SkImageInfo.h" |
| 17 | #include "include/core/SkPaint.h" |
| 18 | #include "include/core/SkPoint.h" |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 19 | #include "include/core/SkPoint3.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 20 | #include "include/core/SkRect.h" |
| 21 | #include "include/core/SkRefCnt.h" |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 22 | #include "include/core/SkRegion.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 23 | #include "include/core/SkScalar.h" |
| 24 | #include "include/core/SkSize.h" |
| 25 | #include "include/core/SkString.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 26 | #include "include/core/SkSurface.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 27 | #include "include/core/SkTypes.h" |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 28 | |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 29 | #include "include/effects/SkImageFilters.h" |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 30 | |
Michael Ludwig | 8d3e279 | 2019-06-19 12:46:43 -0400 | [diff] [blame] | 31 | #include "include/gpu/GrContext.h" |
| 32 | |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 33 | #include "tools/Resources.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 34 | #include "tools/ToolUtils.h" |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 35 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 36 | #include <utility> |
| 37 | |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 38 | /////////////////////////////////////////////////////////////////////////////// |
| 39 | |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 40 | static void show_bounds(SkCanvas* canvas, const SkIRect* clip, const SkIRect* inSubset, |
| 41 | const SkIRect* outSubset) { |
| 42 | const SkIRect* rects[] { clip, inSubset, outSubset }; |
| 43 | SkColor colors[] { SK_ColorBLUE, SK_ColorYELLOW, SK_ColorRED }; |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 44 | |
| 45 | SkPaint paint; |
| 46 | paint.setStyle(SkPaint::kStroke_Style); |
| 47 | |
| 48 | for (size_t i = 0; i < SK_ARRAY_COUNT(rects); ++i) { |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 49 | // Skip null bounds rects, since not all methods have subsets |
| 50 | if (rects[i]) { |
| 51 | paint.setColor(colors[i]); |
| 52 | canvas->drawRect(SkRect::Make(*(rects[i])), paint); |
| 53 | } |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 54 | } |
| 55 | } |
| 56 | |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 57 | // Factories for creating image filters, either with or without a cropRect |
| 58 | // (this could go away if there was a SkImageFilter::makeWithCropRect() function, but that seems |
| 59 | // less generally useful). |
| 60 | typedef sk_sp<SkImageFilter> (*FilterFactory)(sk_sp<SkImage> auxImage, const SkIRect* cropRect); |
| 61 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 62 | static sk_sp<SkImageFilter> color_filter_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 63 | // The color filter uses kSrcIn so that it respects the transparency introduced by clamping; |
| 64 | // using kSrc would just turn the entire out rect to green regardless. |
| 65 | auto cf = SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrcIn); |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 66 | return SkImageFilters::ColorFilter(std::move(cf), nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 67 | } |
| 68 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 69 | static sk_sp<SkImageFilter> blur_filter_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 70 | return SkImageFilters::Blur(2.0f, 2.0f, nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 71 | } |
| 72 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 73 | static sk_sp<SkImageFilter> drop_shadow_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 74 | return SkImageFilters::DropShadow(10.0f, 5.0f, 3.0f, 3.0f, SK_ColorBLUE, nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 75 | } |
| 76 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 77 | static sk_sp<SkImageFilter> offset_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 78 | return SkImageFilters::Offset(10.f, 5.f, nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 79 | } |
| 80 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 81 | static sk_sp<SkImageFilter> dilate_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 82 | return SkImageFilters::Dilate(10.f, 5.f, nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 83 | } |
| 84 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 85 | static sk_sp<SkImageFilter> erode_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 86 | return SkImageFilters::Erode(10.f, 5.f, nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 87 | } |
| 88 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 89 | static sk_sp<SkImageFilter> displacement_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 90 | sk_sp<SkImageFilter> displacement = SkImageFilters::Image(std::move(auxImage)); |
| 91 | return SkImageFilters::DisplacementMap(SkColorChannel::kR, SkColorChannel::kG, 40.f, |
| 92 | std::move(displacement), nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 93 | } |
| 94 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 95 | static sk_sp<SkImageFilter> arithmetic_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 96 | sk_sp<SkImageFilter> background = SkImageFilters::Image(std::move(auxImage)); |
| 97 | return SkImageFilters::Arithmetic(0.0f, .6f, 1.f, 0.f, false, std::move(background), |
| 98 | nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 99 | } |
| 100 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 101 | static sk_sp<SkImageFilter> xfermode_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 102 | sk_sp<SkImageFilter> background = SkImageFilters::Image(std::move(auxImage)); |
| 103 | return SkImageFilters::Xfermode( |
| 104 | SkBlendMode::kModulate, std::move(background), nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 105 | } |
| 106 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 107 | static sk_sp<SkImageFilter> convolution_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 108 | SkISize kernelSize = SkISize::Make(3, 3); |
| 109 | SkIPoint kernelOffset = SkIPoint::Make(1, 1); |
| 110 | // A Laplacian edge detector, ee https://en.wikipedia.org/wiki/Kernel_(image_processing) |
| 111 | SkScalar kernel[9] = {-1.f, -1.f, -1.f, |
| 112 | -1.f, 8.f, -1.f, |
| 113 | -1.f, -1.f, -1.f}; |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 114 | return SkImageFilters::MatrixConvolution(kernelSize, kernel, 1.f, 0.f, kernelOffset, |
| 115 | SkTileMode::kClamp, false, nullptr, cropRect); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 116 | } |
| 117 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 118 | static sk_sp<SkImageFilter> matrix_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 119 | SkMatrix matrix = SkMatrix::I(); |
| 120 | matrix.setRotate(45.f, 50.f, 50.f); |
| 121 | |
| 122 | // This doesn't support a cropRect |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 123 | return SkImageFilters::MatrixTransform(matrix, kLow_SkFilterQuality, nullptr); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 124 | } |
| 125 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 126 | static sk_sp<SkImageFilter> alpha_threshold_factory(sk_sp<SkImage> auxImage, |
| 127 | const SkIRect* cropRect) { |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 128 | // Centered cross with higher opacity |
| 129 | SkRegion region(SkIRect::MakeLTRB(30, 45, 70, 55)); |
| 130 | region.op(SkIRect::MakeLTRB(45, 30, 55, 70), SkRegion::kUnion_Op); |
| 131 | |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 132 | return SkImageFilters::AlphaThreshold(region, 1.f, .2f, nullptr, cropRect); |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | static sk_sp<SkImageFilter> lighting_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 136 | // Must convert the RGB values of the source to alpha, since that is what the lighting filters |
| 137 | // use to estimate their normals. This color matrix changes the color to white and the alpha |
| 138 | // to be equal to the approx. luminance of the original color. |
| 139 | static const float kMatrix[20] = { |
| 140 | 0.f, 0.f, 0.f, 0.f, 1.f, |
| 141 | 0.f, 0.f, 0.f, 0.f, 1.f, |
| 142 | 0.f, 0.f, 0.f, 0.f, 1.f, |
| 143 | 0.2126f, 0.7152f, 0.0722f, 0.f, 0.f |
| 144 | }; |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 145 | sk_sp<SkImageFilter> srcToAlpha = SkImageFilters::ColorFilter( |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 146 | SkColorFilters::Matrix(kMatrix), nullptr); |
| 147 | |
| 148 | // Combine both specular and diffuse into a single DAG since they use separate internal filter |
| 149 | // implementations. |
| 150 | SkScalar sinAzimuth = SkScalarSin(SkDegreesToRadians(225.f)), |
| 151 | cosAzimuth = SkScalarCos(SkDegreesToRadians(225.f)); |
| 152 | |
| 153 | SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0); |
| 154 | SkPoint3 diffLocation = SkPoint3::Make(spotTarget.fX + 50 * cosAzimuth, |
| 155 | spotTarget.fY + 50 * sinAzimuth, |
| 156 | SkIntToScalar(10)); |
| 157 | SkPoint3 specLocation = SkPoint3::Make(spotTarget.fX - 50 * sinAzimuth, |
| 158 | spotTarget.fY + 50 * cosAzimuth, |
| 159 | SkIntToScalar(10)); |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 160 | sk_sp<SkImageFilter> diffuse = SkImageFilters::PointLitDiffuse( |
| 161 | diffLocation, SK_ColorWHITE, /* scale */ 1.f, /* kd */ 2.f, srcToAlpha, cropRect); |
| 162 | sk_sp<SkImageFilter> specular = SkImageFilters::PointLitSpecular( |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 163 | specLocation, SK_ColorRED, /* scale */ 1.f, /* ks */ 1.f, /* shine */ 8.f, |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 164 | srcToAlpha, cropRect); |
| 165 | return SkImageFilters::Merge(std::move(diffuse), std::move(specular), cropRect); |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | static sk_sp<SkImageFilter> tile_factory(sk_sp<SkImage> auxImage, const SkIRect* cropRect) { |
| 169 | // Tile the subset over a large region |
Michael Ludwig | 898bbfa | 2019-08-02 15:21:23 -0400 | [diff] [blame] | 170 | return SkImageFilters::Tile(SkRect::MakeLTRB(25, 25, 75, 75), SkRect::MakeWH(100, 100), |
| 171 | nullptr); |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 172 | } |
| 173 | |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 174 | namespace { |
| 175 | enum class Strategy { |
| 176 | // Uses makeWithFilter, passing in subset and clip directly |
| 177 | kMakeWithFilter, |
| 178 | // Uses saveLayer after clipRect() to filter on the restore (i.e. reference image) |
| 179 | kSaveLayer |
| 180 | }; |
| 181 | }; |
| 182 | |
| 183 | // In this GM, we're going to feed the inner portion of a 100x100 mandrill (i.e., strip off a |
| 184 | // 25-wide border) through the makeWithFilter method. We'll then draw the appropriate subset of the |
| 185 | // result to the screen at the given offset. Some filters rely on a secondary image, which will be a |
| 186 | // 100x100 checkerboard. The original image is drawn in the background so that alignment is clear |
| 187 | // when drawing the result at its reported offset. |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 188 | class ImageMakeWithFilterGM : public skiagm::GM { |
| 189 | public: |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 190 | ImageMakeWithFilterGM (Strategy strategy, bool filterWithCropRect = false) |
| 191 | : fStrategy(strategy) |
| 192 | , fFilterWithCropRect(filterWithCropRect) |
| 193 | , fMainImage(nullptr) |
| 194 | , fAuxImage(nullptr) {} |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 195 | |
| 196 | protected: |
| 197 | SkString onShortName() override { |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 198 | SkString name = SkString("imagemakewithfilter"); |
| 199 | |
| 200 | if (fFilterWithCropRect) { |
| 201 | name.append("_crop"); |
| 202 | } |
| 203 | if (fStrategy == Strategy::kSaveLayer) { |
| 204 | name.append("_ref"); |
| 205 | } |
| 206 | return name; |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 207 | } |
| 208 | |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 209 | SkISize onISize() override { return SkISize::Make(1980, 860); } |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 210 | |
| 211 | void onOnceBeforeDraw() override { |
| 212 | SkImageInfo info = SkImageInfo::MakeN32(100, 100, kUnpremul_SkAlphaType); |
| 213 | auto surface = SkSurface::MakeRaster(info, nullptr); |
| 214 | |
| 215 | sk_sp<SkImage> colorImage = GetResourceAsImage("images/mandrill_128.png"); |
| 216 | // Resize to 100x100 |
| 217 | surface->getCanvas()->drawImageRect( |
| 218 | colorImage, SkRect::MakeWH(colorImage->width(), colorImage->height()), |
| 219 | SkRect::MakeWH(info.width(), info.height()), nullptr); |
| 220 | fMainImage = surface->makeImageSnapshot(); |
| 221 | |
| 222 | ToolUtils::draw_checkerboard(surface->getCanvas()); |
| 223 | fAuxImage = surface->makeImageSnapshot(); |
| 224 | } |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 225 | |
| 226 | void onDraw(SkCanvas* canvas) override { |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 227 | FilterFactory filters[] = { |
| 228 | color_filter_factory, |
| 229 | blur_filter_factory, |
| 230 | drop_shadow_factory, |
| 231 | offset_factory, |
| 232 | dilate_factory, |
| 233 | erode_factory, |
| 234 | displacement_factory, |
| 235 | arithmetic_factory, |
| 236 | xfermode_factory, |
| 237 | convolution_factory, |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 238 | matrix_factory, |
| 239 | alpha_threshold_factory, |
| 240 | lighting_factory, |
| 241 | tile_factory |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 242 | }; |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 243 | const char* filterNames[] = { |
| 244 | "Color", |
| 245 | "Blur", |
| 246 | "Drop Shadow", |
| 247 | "Offset", |
| 248 | "Dilate", |
| 249 | "Erode", |
| 250 | "Displacement", |
| 251 | "Arithmetic", |
| 252 | "Xfer Mode", |
| 253 | "Convolution", |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 254 | "Matrix Xform", |
| 255 | "Alpha Threshold", |
| 256 | "Lighting", |
| 257 | "Tile" |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 258 | }; |
| 259 | static_assert(SK_ARRAY_COUNT(filters) == SK_ARRAY_COUNT(filterNames), "filter name length"); |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 260 | |
| 261 | SkIRect clipBounds[] { |
| 262 | { -20, -20, 100, 100 }, |
| 263 | { 0, 0, 75, 75 }, |
| 264 | { 20, 20, 100, 100 }, |
| 265 | { -20, -20, 50, 50 }, |
| 266 | { 20, 20, 50, 50 }, |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 267 | { 30, 30, 75, 75 } |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 268 | }; |
| 269 | |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 270 | // These need to be GPU-backed when on the GPU to ensure that the image filters use the GPU |
| 271 | // code paths (otherwise they may choose to do CPU filtering then upload) |
| 272 | sk_sp<SkImage> mainImage, auxImage; |
| 273 | if (canvas->getGrContext()) { |
Michael Ludwig | 8d3e279 | 2019-06-19 12:46:43 -0400 | [diff] [blame] | 274 | if (canvas->getGrContext()->abandoned()) { |
| 275 | return; |
| 276 | } |
Brian Osman | d566e2e | 2019-08-14 13:19:04 -0400 | [diff] [blame] | 277 | mainImage = fMainImage->makeTextureImage(canvas->getGrContext()); |
| 278 | auxImage = fAuxImage->makeTextureImage(canvas->getGrContext()); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 279 | } else { |
| 280 | mainImage = fMainImage; |
| 281 | auxImage = fAuxImage; |
| 282 | } |
Greg Daniel | 85da336 | 2020-03-09 15:18:35 -0400 | [diff] [blame] | 283 | if (!mainImage || !auxImage) { |
| 284 | return; |
| 285 | } |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 286 | SkASSERT(mainImage && (mainImage->isTextureBacked() || !canvas->getGrContext())); |
| 287 | SkASSERT(auxImage && (auxImage->isTextureBacked() || !canvas->getGrContext())); |
| 288 | |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 289 | SkScalar MARGIN = SkIntToScalar(40); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 290 | SkScalar DX = mainImage->width() + MARGIN; |
| 291 | SkScalar DY = auxImage->height() + MARGIN; |
| 292 | |
| 293 | // Header hinting at what the filters do |
| 294 | SkPaint textPaint; |
| 295 | textPaint.setAntiAlias(true); |
| 296 | SkFont font(nullptr, 12); |
| 297 | for (size_t i = 0; i < SK_ARRAY_COUNT(filterNames); ++i) { |
| 298 | canvas->drawString(filterNames[i], DX * i + MARGIN, 15, font, textPaint); |
| 299 | } |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 300 | |
| 301 | canvas->translate(MARGIN, MARGIN); |
| 302 | |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 303 | for (auto clipBound : clipBounds) { |
| 304 | canvas->save(); |
| 305 | for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { |
| 306 | SkIRect subset = SkIRect::MakeXYWH(25, 25, 50, 50); |
| 307 | SkIRect outSubset; |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 308 | |
| 309 | // Draw the original image faintly so that it aids in checking alignment of the |
| 310 | // filtered result. |
| 311 | SkPaint alpha; |
Michael Ludwig | fa97463 | 2019-06-20 14:21:28 -0400 | [diff] [blame] | 312 | alpha.setAlphaf(0.3f); |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 313 | canvas->drawImage(mainImage, 0, 0, &alpha); |
| 314 | |
| 315 | this->drawImageWithFilter(canvas, mainImage, auxImage, filters[i], clipBound, |
| 316 | subset, &outSubset); |
| 317 | |
| 318 | // Draw outlines to highlight what was subset, what was cropped, and what was output |
| 319 | // (no output subset is displayed for kSaveLayer since that information isn't avail) |
| 320 | SkIRect* outSubsetBounds = nullptr; |
| 321 | if (fStrategy != Strategy::kSaveLayer) { |
| 322 | outSubsetBounds = &outSubset; |
| 323 | } |
| 324 | show_bounds(canvas, &clipBound, &subset, outSubsetBounds); |
| 325 | |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 326 | canvas->translate(DX, 0); |
| 327 | } |
| 328 | canvas->restore(); |
| 329 | canvas->translate(0, DY); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | private: |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 334 | Strategy fStrategy; |
| 335 | bool fFilterWithCropRect; |
| 336 | sk_sp<SkImage> fMainImage; |
| 337 | sk_sp<SkImage> fAuxImage; |
| 338 | |
| 339 | void drawImageWithFilter(SkCanvas* canvas, sk_sp<SkImage> mainImage, sk_sp<SkImage> auxImage, |
| 340 | FilterFactory filterFactory, const SkIRect& clip, |
| 341 | const SkIRect& subset, SkIRect* dstRect) { |
| 342 | // When creating the filter with a crop rect equal to the clip, we should expect to see no |
| 343 | // difference from a filter without a crop rect. However, if the CTM isn't managed properly |
| 344 | // by makeWithFilter, then the final result will be the incorrect intersection of the clip |
| 345 | // and the transformed crop rect. |
| 346 | sk_sp<SkImageFilter> filter = filterFactory(auxImage, |
| 347 | fFilterWithCropRect ? &clip : nullptr); |
| 348 | |
| 349 | if (fStrategy == Strategy::kSaveLayer) { |
| 350 | SkAutoCanvasRestore acr(canvas, true); |
| 351 | |
| 352 | // Clip before the saveLayer with the filter |
| 353 | canvas->clipRect(SkRect::Make(clip)); |
| 354 | |
| 355 | // Put the image filter on the layer |
| 356 | SkPaint paint; |
| 357 | paint.setImageFilter(filter); |
| 358 | canvas->saveLayer(nullptr, &paint); |
| 359 | |
| 360 | // Draw the original subset of the image |
| 361 | canvas->drawImageRect(mainImage, subset, SkRect::Make(subset), nullptr); |
| 362 | |
| 363 | *dstRect = subset; |
| 364 | } else { |
| 365 | sk_sp<SkImage> result; |
| 366 | SkIRect outSubset; |
| 367 | SkIPoint offset; |
| 368 | |
| 369 | result = mainImage->makeWithFilter(filter.get(), subset, clip, &outSubset, &offset); |
| 370 | |
| 371 | SkASSERT(result); |
| 372 | SkASSERT(mainImage->isTextureBacked() == result->isTextureBacked()); |
| 373 | |
| 374 | *dstRect = SkIRect::MakeXYWH(offset.x(), offset.y(), |
| 375 | outSubset.width(), outSubset.height()); |
| 376 | canvas->drawImageRect(result, outSubset, SkRect::Make(*dstRect), nullptr); |
| 377 | } |
| 378 | } |
| 379 | |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 380 | typedef GM INHERITED; |
| 381 | }; |
Michael Ludwig | b458035 | 2019-06-21 16:01:42 -0400 | [diff] [blame] | 382 | // The different strategies should all look the same, with the exception of filters that affect |
| 383 | // transparent black (i.e. the lighting filter). In the save layer case, the filter affects the |
| 384 | // transparent pixels outside of the drawn subset, whereas the makeWithFilter is restricted. This |
| 385 | // works as intended. |
Michael Ludwig | d5fad8c | 2019-06-18 09:28:47 -0400 | [diff] [blame] | 386 | DEF_GM( return new ImageMakeWithFilterGM(Strategy::kMakeWithFilter); ) |
| 387 | DEF_GM( return new ImageMakeWithFilterGM(Strategy::kSaveLayer); ) |
| 388 | // Test with crop rects on the image filters; should look identical to above if working correctly |
| 389 | DEF_GM( return new ImageMakeWithFilterGM(Strategy::kMakeWithFilter, true); ) |
| 390 | DEF_GM( return new ImageMakeWithFilterGM(Strategy::kSaveLayer, true); ) |