reed | a40be09 | 2016-01-14 09:11:51 -0800 | [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 | |
| 8 | #include "gm.h" |
| 9 | |
| 10 | #include "Resources.h" |
| 11 | #include "SkBitmapScaler.h" |
| 12 | #include "SkGradientShader.h" |
| 13 | #include "SkTypeface.h" |
| 14 | #include "SkImageDecoder.h" |
| 15 | #include "SkStream.h" |
| 16 | #include "SkPaint.h" |
| 17 | #include "SkMipMap.h" |
| 18 | #include "Resources.h" |
| 19 | #include "sk_tool_utils.h" |
| 20 | |
reed | 32e0b4a | 2016-01-15 13:17:08 -0800 | [diff] [blame^] | 21 | #define SHOW_MIP_COLOR 0xFF000000 |
| 22 | |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 23 | static SkBitmap make_bitmap(int w, int h) { |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 24 | SkBitmap bm; |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 25 | bm.allocN32Pixels(w, h); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 26 | SkCanvas canvas(bm); |
| 27 | canvas.clear(0xFFFFFFFF); |
| 28 | SkPaint paint; |
| 29 | paint.setStyle(SkPaint::kStroke_Style); |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 30 | paint.setStrokeWidth(w / 16.0f); |
reed | 32e0b4a | 2016-01-15 13:17:08 -0800 | [diff] [blame^] | 31 | paint.setColor(SHOW_MIP_COLOR); |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 32 | canvas.drawCircle(w/2.0f, h/2.0f, w/3.0f, paint); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 33 | return bm; |
| 34 | } |
| 35 | |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 36 | static SkBitmap make_bitmap2(int w, int h) { |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 37 | SkBitmap bm; |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 38 | bm.allocN32Pixels(w, h); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 39 | SkCanvas canvas(bm); |
| 40 | canvas.clear(0xFFFFFFFF); |
| 41 | SkPaint paint; |
reed | 32e0b4a | 2016-01-15 13:17:08 -0800 | [diff] [blame^] | 42 | paint.setColor(SHOW_MIP_COLOR); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 43 | paint.setStyle(SkPaint::kStroke_Style); |
| 44 | |
| 45 | SkScalar inset = 2; |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 46 | SkRect r = SkRect::MakeIWH(w, h).makeInset(0.5f, 0.5f); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 47 | while (r.width() > 4) { |
| 48 | canvas.drawRect(r, paint); |
| 49 | r.inset(inset, inset); |
| 50 | inset += 1; |
| 51 | } |
| 52 | return bm; |
| 53 | } |
| 54 | |
| 55 | #include "SkNx.h" |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 56 | static SkBitmap make_bitmap3(int w, int h) { |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 57 | SkBitmap bm; |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 58 | bm.allocN32Pixels(w, h); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 59 | SkCanvas canvas(bm); |
| 60 | canvas.clear(0xFFFFFFFF); |
| 61 | SkPaint paint; |
| 62 | paint.setStyle(SkPaint::kStroke_Style); |
| 63 | paint.setStrokeWidth(2.1f); |
reed | 32e0b4a | 2016-01-15 13:17:08 -0800 | [diff] [blame^] | 64 | paint.setColor(SHOW_MIP_COLOR); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 65 | |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 66 | SkScalar s = SkIntToScalar(w); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 67 | Sk4f p(s, -s, -s, s); |
| 68 | Sk4f d(5); |
| 69 | while (p.kth<1>() < s) { |
| 70 | canvas.drawLine(p.kth<0>(),p.kth<1>(), p.kth<2>(), p.kth<3>(), paint); |
| 71 | p = p + d; |
| 72 | } |
| 73 | return bm; |
| 74 | } |
| 75 | |
| 76 | class ShowMipLevels : public skiagm::GM { |
| 77 | const int fN; |
| 78 | SkBitmap fBM[4]; |
| 79 | |
| 80 | public: |
| 81 | static unsigned gamma(unsigned n) { |
| 82 | float x = n / 255.0f; |
| 83 | #if 0 |
| 84 | x = sqrtf(x); |
| 85 | #else |
| 86 | if (x > 0.0031308f) { |
| 87 | x = 1.055f * (powf(x, (1.0f / 2.4f))) - 0.055f; |
| 88 | } else { |
| 89 | x = 12.92f * x; |
| 90 | } |
| 91 | #endif |
| 92 | return (int)(x * 255); |
| 93 | } |
| 94 | |
| 95 | static void apply_gamma(const SkBitmap& bm) { |
| 96 | return; // below is our experiment for sRGB correction |
| 97 | bm.lockPixels(); |
| 98 | for (int y = 0; y < bm.height(); ++y) { |
| 99 | for (int x = 0; x < bm.width(); ++x) { |
| 100 | SkPMColor c = *bm.getAddr32(x, y); |
| 101 | unsigned r = gamma(SkGetPackedR32(c)); |
| 102 | unsigned g = gamma(SkGetPackedG32(c)); |
| 103 | unsigned b = gamma(SkGetPackedB32(c)); |
| 104 | *bm.getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b); |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | ShowMipLevels(int N) : fN(N) { |
| 110 | fBM[0] = sk_tool_utils::create_checkerboard_bitmap(N, N, SK_ColorBLACK, SK_ColorWHITE, 2); |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 111 | fBM[1] = make_bitmap(N, N); |
| 112 | fBM[2] = make_bitmap2(N, N); |
| 113 | fBM[3] = make_bitmap3(N, N); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | protected: |
| 117 | |
| 118 | SkString onShortName() override { |
| 119 | SkString str; |
| 120 | str.printf("showmiplevels_%d", fN); |
| 121 | return str; |
| 122 | } |
| 123 | |
| 124 | SkISize onISize() override { |
| 125 | return { 824, 862 }; |
| 126 | } |
| 127 | |
| 128 | static void DrawAndFrame(SkCanvas* canvas, const SkBitmap& orig, SkScalar x, SkScalar y) { |
| 129 | SkBitmap bm; |
| 130 | orig.copyTo(&bm); |
| 131 | apply_gamma(bm); |
| 132 | |
| 133 | canvas->drawBitmap(bm, x, y, nullptr); |
| 134 | SkPaint paint; |
| 135 | paint.setStyle(SkPaint::kStroke_Style); |
| 136 | paint.setColor(0xFFFFCCCC); |
| 137 | canvas->drawRect(SkRect::MakeIWH(bm.width(), bm.height()).makeOffset(x, y).makeOutset(0.5f, 0.5f), paint); |
| 138 | } |
| 139 | |
| 140 | template <typename F> void drawLevels(SkCanvas* canvas, const SkBitmap& baseBM, F func) { |
| 141 | SkScalar x = 4; |
| 142 | SkScalar y = 4; |
| 143 | |
| 144 | SkPixmap prevPM; |
| 145 | baseBM.lockPixels(); |
| 146 | baseBM.peekPixels(&prevPM); |
| 147 | |
| 148 | SkAutoTUnref<SkMipMap> mm(SkMipMap::Build(baseBM, nullptr)); |
| 149 | |
| 150 | int index = 0; |
| 151 | SkMipMap::Level level; |
| 152 | SkScalar scale = 0.5f; |
| 153 | while (mm->extractLevel(scale, &level)) { |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 154 | SkImageInfo info = SkImageInfo::Make(level.fWidth, level.fHeight, |
| 155 | baseBM.colorType(), baseBM.alphaType()); |
reed | a40be09 | 2016-01-14 09:11:51 -0800 | [diff] [blame] | 156 | SkPixmap levelPM{ info, level.fPixels, level.fRowBytes }; |
| 157 | |
| 158 | SkBitmap bm = func(prevPM, levelPM); |
| 159 | DrawAndFrame(canvas, bm, x, y); |
| 160 | |
| 161 | if (info.width() <= 2 || info.height() <= 2) { |
| 162 | break; |
| 163 | } |
| 164 | if (index & 1) { |
| 165 | x += info.width() + 4; |
| 166 | } else { |
| 167 | y += info.height() + 4; |
| 168 | } |
| 169 | scale /= 2; |
| 170 | prevPM = levelPM; |
| 171 | index += 1; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | void drawSet(SkCanvas* canvas, const SkBitmap& orig) { |
| 176 | SkAutoCanvasRestore acr(canvas, true); |
| 177 | |
| 178 | drawLevels(canvas, orig, [](const SkPixmap& prev, const SkPixmap& curr) { |
| 179 | SkBitmap bm; |
| 180 | bm.installPixels(curr); |
| 181 | return bm; |
| 182 | }); |
| 183 | |
| 184 | const SkBitmapScaler::ResizeMethod methods[] = { |
| 185 | SkBitmapScaler::RESIZE_BOX, |
| 186 | SkBitmapScaler::RESIZE_TRIANGLE, |
| 187 | SkBitmapScaler::RESIZE_LANCZOS3, |
| 188 | SkBitmapScaler::RESIZE_HAMMING, |
| 189 | SkBitmapScaler::RESIZE_MITCHELL, |
| 190 | }; |
| 191 | |
| 192 | SkPixmap basePM; |
| 193 | orig.lockPixels(); |
| 194 | orig.peekPixels(&basePM); |
| 195 | for (auto method : methods) { |
| 196 | canvas->translate(orig.width()/2 + 8.0f, 0); |
| 197 | drawLevels(canvas, orig, [basePM, method](const SkPixmap& prev, const SkPixmap& curr) { |
| 198 | SkBitmap bm; |
| 199 | SkBitmapScaler::Resize(&bm, prev, method, curr.width(), curr.height()); |
| 200 | return bm; |
| 201 | }); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | void onDraw(SkCanvas* canvas) override { |
| 206 | canvas->translate(4, 4); |
| 207 | for (const auto& bm : fBM) { |
| 208 | this->drawSet(canvas, bm); |
| 209 | canvas->translate(0, bm.height() * 0.85f); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | private: |
| 214 | typedef skiagm::GM INHERITED; |
| 215 | }; |
| 216 | DEF_GM( return new ShowMipLevels(255); ) |
| 217 | DEF_GM( return new ShowMipLevels(256); ) |
| 218 | |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 219 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 220 | |
| 221 | /** |
| 222 | * Show mip levels that were built, for all supported colortypes |
| 223 | */ |
| 224 | class ShowMipLevels2 : public skiagm::GM { |
| 225 | const int fW, fH; |
| 226 | SkBitmap fBM[4]; |
| 227 | |
| 228 | public: |
| 229 | ShowMipLevels2(int w, int h) : fW(w), fH(h) { |
reed | 32e0b4a | 2016-01-15 13:17:08 -0800 | [diff] [blame^] | 230 | fBM[0] = sk_tool_utils::create_checkerboard_bitmap(w, h, SHOW_MIP_COLOR, SK_ColorWHITE, 2); |
reed | 01dc44a | 2016-01-15 10:51:08 -0800 | [diff] [blame] | 231 | fBM[1] = make_bitmap(w, h); |
| 232 | fBM[2] = make_bitmap2(w, h); |
| 233 | fBM[3] = make_bitmap3(w, h); |
| 234 | } |
| 235 | |
| 236 | protected: |
| 237 | |
| 238 | SkString onShortName() override { |
| 239 | SkString str; |
| 240 | str.printf("showmiplevels2_%dx%d", fW, fH); |
| 241 | return str; |
| 242 | } |
| 243 | |
| 244 | SkISize onISize() override { |
| 245 | return { 824, 862 }; |
| 246 | } |
| 247 | |
| 248 | static void DrawAndFrame(SkCanvas* canvas, const SkBitmap& bm, SkScalar x, SkScalar y) { |
| 249 | canvas->drawBitmap(bm, x, y, nullptr); |
| 250 | SkPaint paint; |
| 251 | paint.setStyle(SkPaint::kStroke_Style); |
| 252 | paint.setColor(0xFFFFCCCC); |
| 253 | canvas->drawRect(SkRect::MakeIWH(bm.width(), bm.height()).makeOffset(x, y).makeOutset(0.5f, 0.5f), paint); |
| 254 | } |
| 255 | |
| 256 | void drawLevels(SkCanvas* canvas, const SkBitmap& baseBM) { |
| 257 | SkScalar x = 4; |
| 258 | SkScalar y = 4; |
| 259 | |
| 260 | SkAutoTUnref<SkMipMap> mm(SkMipMap::Build(baseBM, nullptr)); |
| 261 | |
| 262 | int index = 0; |
| 263 | SkMipMap::Level level; |
| 264 | SkScalar scale = 0.5f; |
| 265 | while (mm->extractLevel(scale, &level)) { |
| 266 | SkImageInfo info = SkImageInfo::Make(level.fWidth, level.fHeight, |
| 267 | baseBM.colorType(), baseBM.alphaType()); |
| 268 | |
| 269 | SkBitmap bm; |
| 270 | bm.installPixels(info, level.fPixels, level.fRowBytes); |
| 271 | DrawAndFrame(canvas, bm, x, y); |
| 272 | |
| 273 | if (info.width() <= 2 || info.height() <= 2) { |
| 274 | break; |
| 275 | } |
| 276 | if (index & 1) { |
| 277 | x += info.width() + 4; |
| 278 | } else { |
| 279 | y += info.height() + 4; |
| 280 | } |
| 281 | scale /= 2; |
| 282 | index += 1; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | void drawSet(SkCanvas* canvas, const SkBitmap& orig) { |
| 287 | const SkColorType ctypes[] = { |
| 288 | kN32_SkColorType, kRGB_565_SkColorType, kARGB_4444_SkColorType, kGray_8_SkColorType |
| 289 | }; |
| 290 | |
| 291 | SkAutoCanvasRestore acr(canvas, true); |
| 292 | |
| 293 | for (auto ctype : ctypes) { |
| 294 | SkBitmap bm; |
| 295 | orig.copyTo(&bm, ctype); |
| 296 | drawLevels(canvas, bm); |
| 297 | canvas->translate(orig.width()/2 + 8.0f, 0); |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | void onDraw(SkCanvas* canvas) override { |
| 302 | canvas->translate(4, 4); |
| 303 | for (const auto& bm : fBM) { |
| 304 | this->drawSet(canvas, bm); |
| 305 | // round so we always produce an integral translate, so the GOLD tool won't show |
| 306 | // unimportant diffs if this is drawn on a GPU with different rounding rules |
| 307 | // since we draw the bitmaps using nearest-neighbor |
| 308 | canvas->translate(0, SkScalarRoundToScalar(bm.height() * 0.85f)); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | private: |
| 313 | typedef skiagm::GM INHERITED; |
| 314 | }; |
| 315 | DEF_GM( return new ShowMipLevels2(255, 255); ) |
| 316 | DEF_GM( return new ShowMipLevels2(256, 255); ) |
| 317 | DEF_GM( return new ShowMipLevels2(255, 256); ) |
| 318 | DEF_GM( return new ShowMipLevels2(256, 256); ) |