1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "gm.h" 9 #include "SkPath.h" 10 #include "SkRegion.h" 11 #include "SkShader.h" 12 #include "SkUtils.h" 13 #include "SkColorPriv.h" 14 #include "SkColorFilter.h" 15 #include "SkTypeface.h" 16 17 // effects 18 #include "SkGradientShader.h" 19 #include "SkUnitMappers.h" 20 #include "SkBlurDrawLooper.h" 21 22 static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) { 23 bm->setConfig(config, w, h); 24 bm->allocPixels(); 25 bm->eraseColor(SK_ColorTRANSPARENT); 26 27 SkCanvas canvas(*bm); 28 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 29 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 30 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 31 SkPaint paint; 32 33 SkUnitMapper* um = NULL; 34 35 um = new SkCosineMapper; 36 // um = new SkDiscreteMapper(12); 37 38 SkAutoUnref au(um); 39 40 paint.setDither(true); 41 paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, 42 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref(); 43 canvas.drawPaint(paint); 44 } 45 46 static void setup(SkPaint* paint, const SkBitmap& bm, SkPaint::FilterLevel filter_level, 47 SkShader::TileMode tmx, SkShader::TileMode tmy) { 48 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 49 paint->setShader(shader)->unref(); 50 paint->setFilterLevel(filter_level); 51 } 52 53 static const SkBitmap::Config gConfigs[] = { 54 SkBitmap::kARGB_8888_Config, 55 SkBitmap::kRGB_565_Config, 56 }; 57 58 class ScaledTilingGM : public skiagm::GM { 59 SkBlurDrawLooper fLooper; 60 public: 61 ScaledTilingGM(bool powerOfTwoSize) 62 : fLooper(SkIntToScalar(1), SkIntToScalar(2), SkIntToScalar(2), 0x88000000) 63 , fPowerOfTwoSize(powerOfTwoSize) { 64 } 65 66 SkBitmap fTexture[SK_ARRAY_COUNT(gConfigs)]; 67 68 protected: 69 70 enum { 71 kPOTSize = 4, 72 kNPOTSize = 3, 73 }; 74 75 SkString onShortName() { 76 SkString name("scaled_tilemodes"); 77 if (!fPowerOfTwoSize) { 78 name.append("_npot"); 79 } 80 return name; 81 } 82 83 SkISize onISize() { return SkISize::Make(880, 760); } 84 85 virtual void onOnceBeforeDraw() SK_OVERRIDE { 86 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 87 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 88 makebm(&fTexture[i], gConfigs[i], size, size); 89 } 90 } 91 92 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 93 94 float scale = 32.f/kPOTSize; 95 96 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 97 98 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 99 100 static const char* gConfigNames[] = { "8888" , "565", "4444" }; 101 102 static const SkPaint::FilterLevel gFilterLevels[] = 103 { SkPaint::kNone_FilterLevel, 104 SkPaint::kLow_FilterLevel, 105 SkPaint::kMedium_FilterLevel, 106 SkPaint::kHigh_FilterLevel }; 107 static const char* gFilterNames[] = { "None", "Low", "Medium", "High" }; 108 109 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 110 static const char* gModeNames[] = { "C", "R", "M" }; 111 112 SkScalar y = SkIntToScalar(24); 113 SkScalar x = SkIntToScalar(10)/scale; 114 115 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 116 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 117 SkPaint p; 118 SkString str; 119 p.setAntiAlias(true); 120 p.setDither(true); 121 p.setLooper(&fLooper); 122 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 123 124 p.setTextAlign(SkPaint::kCenter_Align); 125 canvas->drawText(str.c_str(), str.size(), scale*(x + r.width()/2), y, p); 126 127 x += r.width() * 4 / 3; 128 } 129 } 130 131 y = SkIntToScalar(40) / scale; 132 133 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 134 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterLevels); j++) { 135 x = SkIntToScalar(10)/scale; 136 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 137 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 138 SkPaint paint; 139 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 140 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 141 if (!fPowerOfTwoSize) { 142 makebm(&fTexture[i], gConfigs[i], size, size); 143 } 144 #endif 145 setup(&paint, fTexture[i], gFilterLevels[j], gModes[kx], gModes[ky]); 146 paint.setDither(true); 147 148 canvas->save(); 149 canvas->scale(scale,scale); 150 canvas->translate(x, y); 151 canvas->drawRect(r, paint); 152 canvas->restore(); 153 154 x += r.width() * 4 / 3; 155 } 156 } 157 { 158 SkPaint p; 159 SkString str; 160 p.setAntiAlias(true); 161 p.setLooper(&fLooper); 162 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 163 canvas->drawText(str.c_str(), str.size(), scale*x, scale*(y + r.height() * 2 / 3), p); 164 } 165 166 y += r.height() * 4 / 3; 167 } 168 } 169 } 170 171 private: 172 bool fPowerOfTwoSize; 173 typedef skiagm::GM INHERITED; 174 }; 175 176 static const int gWidth = 32; 177 static const int gHeight = 32; 178 179 static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 180 SkBitmap bm; 181 makebm(&bm, SkBitmap::kARGB_8888_Config, gWidth, gHeight); 182 return SkShader::CreateBitmapShader(bm, tx, ty); 183 } 184 185 static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 186 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 187 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 188 SkScalar rad = SkIntToScalar(gWidth)/2; 189 SkColor colors[] = { 0xFFFF0000, 0xFF0044FF }; 190 191 int index = (int)ty; 192 switch (index % 3) { 193 case 0: 194 return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx); 195 case 1: 196 return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx); 197 case 2: 198 return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors)); 199 } 200 201 return NULL; 202 } 203 204 typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 205 206 class ScaledTiling2GM : public skiagm::GM { 207 ShaderProc fProc; 208 SkString fName; 209 public: 210 ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 211 fName.printf("scaled_tilemode_%s", name); 212 } 213 214 protected: 215 SkString onShortName() { 216 return fName; 217 } 218 219 SkISize onISize() { return SkISize::Make(880, 560); } 220 221 virtual void onDraw(SkCanvas* canvas) { 222 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 223 224 const SkScalar w = SkIntToScalar(gWidth); 225 const SkScalar h = SkIntToScalar(gHeight); 226 SkRect r = { -w, -h, w*2, h*2 }; 227 228 static const SkShader::TileMode gModes[] = { 229 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 230 }; 231 static const char* gModeNames[] = { 232 "Clamp", "Repeat", "Mirror" 233 }; 234 235 SkScalar y = SkIntToScalar(24); 236 SkScalar x = SkIntToScalar(66); 237 238 SkPaint p; 239 p.setAntiAlias(true); 240 p.setTextAlign(SkPaint::kCenter_Align); 241 242 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 243 SkString str(gModeNames[kx]); 244 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 245 x += r.width() * 4 / 3; 246 } 247 248 y += SkIntToScalar(16) + h; 249 p.setTextAlign(SkPaint::kRight_Align); 250 251 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 252 x = SkIntToScalar(16) + w; 253 254 SkString str(gModeNames[ky]); 255 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 256 257 x += SkIntToScalar(50); 258 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 259 SkPaint paint; 260 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 261 262 canvas->save(); 263 canvas->translate(x, y); 264 canvas->drawRect(r, paint); 265 canvas->restore(); 266 267 x += r.width() * 4 / 3; 268 } 269 y += r.height() * 4 / 3; 270 } 271 } 272 273 private: 274 typedef skiagm::GM INHERITED; 275 }; 276 277 ////////////////////////////////////////////////////////////////////////////// 278 279 DEF_GM( return new ScaledTilingGM(true); ) 280 DEF_GM( return new ScaledTilingGM(false); ) 281 DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); ) 282 DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); ) 283
