1 /* 2 * Copyright 2011 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 #include "gm.h" 8 #include "sk_tool_utils.h" 9 #include "SkColorFilter.h" 10 #include "SkMaskFilter.h" 11 #include "SkPath.h" 12 #include "SkRegion.h" 13 #include "SkShader.h" 14 #include "SkUtils.h" 15 16 // effects 17 #include "SkGradientShader.h" 18 #include "SkBlurDrawLooper.h" 19 20 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) { 21 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType)); 22 bm->eraseColor(SK_ColorTRANSPARENT); 23 24 SkCanvas canvas(*bm); 25 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 26 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 27 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 28 SkPaint paint; 29 30 paint.setDither(true); 31 paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 32 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode)); 33 canvas.drawPaint(paint); 34 } 35 36 static void setup(SkPaint* paint, const SkBitmap& bm, SkFilterQuality filter_level, 37 SkShader::TileMode tmx, SkShader::TileMode tmy) { 38 paint->setShader(SkShader::MakeBitmapShader(bm, tmx, tmy)); 39 paint->setFilterQuality(filter_level); 40 } 41 42 constexpr SkColorType gColorTypes[] = { 43 kN32_SkColorType, 44 kRGB_565_SkColorType, 45 }; 46 47 class ScaledTilingGM : public skiagm::GM { 48 public: 49 ScaledTilingGM(bool powerOfTwoSize) 50 : fPowerOfTwoSize(powerOfTwoSize) { 51 } 52 53 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; 54 55 protected: 56 enum { 57 kPOTSize = 4, 58 kNPOTSize = 3, 59 }; 60 61 SkString onShortName() override { 62 SkString name("scaled_tilemodes"); 63 if (!fPowerOfTwoSize) { 64 name.append("_npot"); 65 } 66 return name; 67 } 68 69 SkISize onISize() override { return SkISize::Make(880, 760); } 70 71 void onOnceBeforeDraw() override { 72 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 73 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 74 makebm(&fTexture[i], gColorTypes[i], size, size); 75 } 76 } 77 78 void onDraw(SkCanvas* canvas) override { 79 float scale = 32.f/kPOTSize; 80 81 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 82 83 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 84 85 const char* gColorTypeNames[] = { "8888" , "565", "4444" }; 86 87 constexpr SkFilterQuality gFilterQualitys[] = 88 { kNone_SkFilterQuality, 89 kLow_SkFilterQuality, 90 kMedium_SkFilterQuality, 91 kHigh_SkFilterQuality }; 92 const char* gFilterNames[] = { "None", "Low", "Medium", "High" }; 93 94 constexpr SkShader::TileMode gModes[] = { 95 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 96 const char* gModeNames[] = { "C", "R", "M" }; 97 98 SkScalar y = SkIntToScalar(24); 99 SkScalar x = SkIntToScalar(10)/scale; 100 101 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 102 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 103 SkPaint p; 104 SkString str; 105 p.setAntiAlias(true); 106 sk_tool_utils::set_portable_typeface(&p); 107 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 108 109 p.setTextAlign(SkPaint::kCenter_Align); 110 canvas->drawText(str.c_str(), str.size(), scale*(x + r.width()/2), y, p); 111 112 x += r.width() * 4 / 3; 113 } 114 } 115 116 y = SkIntToScalar(40) / scale; 117 118 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 119 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterQualitys); j++) { 120 x = SkIntToScalar(10)/scale; 121 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 122 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 123 SkPaint paint; 124 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 125 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 126 if (!fPowerOfTwoSize) { 127 makebm(&fTexture[i], gColorTypes[i], size, size); 128 } 129 #endif 130 setup(&paint, fTexture[i], gFilterQualitys[j], gModes[kx], gModes[ky]); 131 paint.setDither(true); 132 133 canvas->save(); 134 canvas->scale(scale,scale); 135 canvas->translate(x, y); 136 canvas->drawRect(r, paint); 137 canvas->restore(); 138 139 x += r.width() * 4 / 3; 140 } 141 } 142 { 143 SkPaint p; 144 SkString str; 145 p.setAntiAlias(true); 146 sk_tool_utils::set_portable_typeface(&p); 147 str.printf("%s, %s", gColorTypeNames[i], gFilterNames[j]); 148 canvas->drawText(str.c_str(), str.size(), scale*x, scale*(y + r.height() * 2 / 3), p); 149 } 150 151 y += r.height() * 4 / 3; 152 } 153 } 154 } 155 156 private: 157 bool fPowerOfTwoSize; 158 typedef skiagm::GM INHERITED; 159 }; 160 161 constexpr int gWidth = 32; 162 constexpr int gHeight = 32; 163 164 static sk_sp<SkShader> make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 165 SkBitmap bm; 166 makebm(&bm, kN32_SkColorType, gWidth, gHeight); 167 return SkShader::MakeBitmapShader(bm, tx, ty); 168 } 169 170 static sk_sp<SkShader> make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 171 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 172 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 173 SkScalar rad = SkIntToScalar(gWidth)/2; 174 SkColor colors[] = { 0xFFFF0000, sk_tool_utils::color_to_565(0xFF0044FF) }; 175 176 int index = (int)ty; 177 switch (index % 3) { 178 case 0: 179 return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx); 180 case 1: 181 return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx); 182 case 2: 183 return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors)); 184 } 185 186 return nullptr; 187 } 188 189 typedef sk_sp<SkShader> (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 190 191 class ScaledTiling2GM : public skiagm::GM { 192 ShaderProc fProc; 193 SkString fName; 194 public: 195 ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 196 fName.printf("scaled_tilemode_%s", name); 197 } 198 199 protected: 200 201 SkString onShortName() override { 202 return fName; 203 } 204 205 SkISize onISize() override { return SkISize::Make(650, 610); } 206 207 void onDraw(SkCanvas* canvas) override { 208 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 209 210 const SkScalar w = SkIntToScalar(gWidth); 211 const SkScalar h = SkIntToScalar(gHeight); 212 SkRect r = { -w, -h, w*2, h*2 }; 213 214 constexpr SkShader::TileMode gModes[] = { 215 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 216 }; 217 const char* gModeNames[] = { 218 "Clamp", "Repeat", "Mirror" 219 }; 220 221 SkScalar y = SkIntToScalar(24); 222 SkScalar x = SkIntToScalar(66); 223 224 SkPaint p; 225 p.setAntiAlias(true); 226 sk_tool_utils::set_portable_typeface(&p); 227 p.setTextAlign(SkPaint::kCenter_Align); 228 229 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 230 SkString str(gModeNames[kx]); 231 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 232 x += r.width() * 4 / 3; 233 } 234 235 y += SkIntToScalar(16) + h; 236 p.setTextAlign(SkPaint::kRight_Align); 237 238 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 239 x = SkIntToScalar(16) + w; 240 241 SkString str(gModeNames[ky]); 242 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 243 244 x += SkIntToScalar(50); 245 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 246 SkPaint paint; 247 paint.setShader(fProc(gModes[kx], gModes[ky])); 248 249 canvas->save(); 250 canvas->translate(x, y); 251 canvas->drawRect(r, paint); 252 canvas->restore(); 253 254 x += r.width() * 4 / 3; 255 } 256 y += r.height() * 4 / 3; 257 } 258 } 259 260 private: 261 typedef skiagm::GM INHERITED; 262 }; 263 264 ////////////////////////////////////////////////////////////////////////////// 265 266 DEF_GM( return new ScaledTilingGM(true); ) 267 DEF_GM( return new ScaledTilingGM(false); ) 268 DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); ) 269 DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); ) 270
