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 #include "SkBlurMask.h" 17 18 // effects 19 #include "SkGradientShader.h" 20 #include "SkBlurDrawLooper.h" 21 22 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) { 23 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType)); 24 bm->eraseColor(SK_ColorTRANSPARENT); 25 26 SkCanvas canvas(*bm); 27 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 28 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 29 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 30 SkPaint paint; 31 32 paint.setDither(true); 33 paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, 34 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode))->unref(); 35 canvas.drawPaint(paint); 36 } 37 38 static void setup(SkPaint* paint, const SkBitmap& bm, SkPaint::FilterLevel filter_level, 39 SkShader::TileMode tmx, SkShader::TileMode tmy) { 40 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 41 paint->setShader(shader)->unref(); 42 paint->setFilterLevel(filter_level); 43 } 44 45 static const SkColorType gColorTypes[] = { 46 kN32_SkColorType, 47 kRGB_565_SkColorType, 48 }; 49 50 class ScaledTilingGM : public skiagm::GM { 51 SkAutoTUnref<SkBlurDrawLooper> fLooper; 52 public: 53 ScaledTilingGM(bool powerOfTwoSize) 54 : fLooper(SkBlurDrawLooper::Create(0x88000000, 55 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)), 56 SkIntToScalar(2), SkIntToScalar(2))) 57 , fPowerOfTwoSize(powerOfTwoSize) { 58 } 59 60 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; 61 62 protected: 63 enum { 64 kPOTSize = 4, 65 kNPOTSize = 3, 66 }; 67 68 virtual uint32_t onGetFlags() const SK_OVERRIDE { 69 if (!fPowerOfTwoSize) { 70 return kSkipTiled_Flag; // Only for 565. 8888 is fine. 71 } 72 return 0; 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(gColorTypes); i++) { 88 makebm(&fTexture[i], gColorTypes[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* gColorTypeNames[] = { "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(gColorTypes); 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], gColorTypes[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", gColorTypeNames[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, kN32_SkColorType, 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 virtual uint32_t onGetFlags() const SK_OVERRIDE { 216 return kSkipTiled_Flag; 217 } 218 219 SkString onShortName() { 220 return fName; 221 } 222 223 SkISize onISize() { return SkISize::Make(880, 560); } 224 225 virtual void onDraw(SkCanvas* canvas) { 226 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 227 228 const SkScalar w = SkIntToScalar(gWidth); 229 const SkScalar h = SkIntToScalar(gHeight); 230 SkRect r = { -w, -h, w*2, h*2 }; 231 232 static const SkShader::TileMode gModes[] = { 233 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 234 }; 235 static const char* gModeNames[] = { 236 "Clamp", "Repeat", "Mirror" 237 }; 238 239 SkScalar y = SkIntToScalar(24); 240 SkScalar x = SkIntToScalar(66); 241 242 SkPaint p; 243 p.setAntiAlias(true); 244 p.setTextAlign(SkPaint::kCenter_Align); 245 246 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 247 SkString str(gModeNames[kx]); 248 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 249 x += r.width() * 4 / 3; 250 } 251 252 y += SkIntToScalar(16) + h; 253 p.setTextAlign(SkPaint::kRight_Align); 254 255 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 256 x = SkIntToScalar(16) + w; 257 258 SkString str(gModeNames[ky]); 259 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 260 261 x += SkIntToScalar(50); 262 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 263 SkPaint paint; 264 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 265 266 canvas->save(); 267 canvas->translate(x, y); 268 canvas->drawRect(r, paint); 269 canvas->restore(); 270 271 x += r.width() * 4 / 3; 272 } 273 y += r.height() * 4 / 3; 274 } 275 } 276 277 private: 278 typedef skiagm::GM INHERITED; 279 }; 280 281 ////////////////////////////////////////////////////////////////////////////// 282 283 DEF_GM( return new ScaledTilingGM(true); ) 284 DEF_GM( return new ScaledTilingGM(false); ) 285 DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); ) 286 DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); ) 287
