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, bool filter, 47 SkShader::TileMode tmx, SkShader::TileMode tmy) { 48 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 49 paint->setShader(shader)->unref(); 50 paint->setFilterLevel(filter ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel); 51 } 52 53 static const SkBitmap::Config gConfigs[] = { 54 SkBitmap::kARGB_8888_Config, 55 SkBitmap::kRGB_565_Config, 56 }; 57 58 class TilingGM : public skiagm::GM { 59 public: 60 TilingGM(bool powerOfTwoSize) 61 : fPowerOfTwoSize(powerOfTwoSize) { 62 } 63 64 SkBitmap fTexture[SK_ARRAY_COUNT(gConfigs)]; 65 66 protected: 67 68 enum { 69 kPOTSize = 32, 70 kNPOTSize = 21, 71 }; 72 73 SkString onShortName() { 74 SkString name("tilemodes"); 75 if (!fPowerOfTwoSize) { 76 name.append("_npot"); 77 } 78 return name; 79 } 80 81 SkISize onISize() { return SkISize::Make(880, 560); } 82 83 virtual void onOnceBeforeDraw() SK_OVERRIDE { 84 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 85 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 86 makebm(&fTexture[i], gConfigs[i], size, size); 87 } 88 } 89 90 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 91 92 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 93 94 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 95 96 static const char* gConfigNames[] = { "8888", "565", "4444" }; 97 98 static const bool gFilters[] = { false, true }; 99 static const char* gFilterNames[] = { "point", "bilinear" }; 100 101 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 102 static const char* gModeNames[] = { "C", "R", "M" }; 103 104 SkScalar y = SkIntToScalar(24); 105 SkScalar x = SkIntToScalar(10); 106 107 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 108 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 109 SkPaint p; 110 SkString str; 111 p.setAntiAlias(true); 112 p.setDither(true); 113 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 114 115 p.setTextAlign(SkPaint::kCenter_Align); 116 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 117 118 x += r.width() * 4 / 3; 119 } 120 } 121 122 y += SkIntToScalar(16); 123 124 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 125 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { 126 x = SkIntToScalar(10); 127 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 128 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 129 SkPaint paint; 130 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 131 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 132 if (!fPowerOfTwoSize) { 133 makebm(&fTexture[i], gConfigs[i], size, size); 134 } 135 #endif 136 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); 137 paint.setDither(true); 138 139 canvas->save(); 140 canvas->translate(x, y); 141 canvas->drawRect(r, paint); 142 canvas->restore(); 143 144 x += r.width() * 4 / 3; 145 } 146 } 147 { 148 SkPaint p; 149 SkString str; 150 p.setAntiAlias(true); 151 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 152 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); 153 } 154 155 y += r.height() * 4 / 3; 156 } 157 } 158 } 159 160 private: 161 bool fPowerOfTwoSize; 162 typedef skiagm::GM INHERITED; 163 }; 164 165 static const int gWidth = 32; 166 static const int gHeight = 32; 167 168 static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 169 SkBitmap bm; 170 makebm(&bm, SkBitmap::kARGB_8888_Config, gWidth, gHeight); 171 return SkShader::CreateBitmapShader(bm, tx, ty); 172 } 173 174 static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 175 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 176 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 177 SkScalar rad = SkIntToScalar(gWidth)/2; 178 SkColor colors[] = { 0xFFFF0000, 0xFF0044FF }; 179 180 int index = (int)ty; 181 switch (index % 3) { 182 case 0: 183 return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx); 184 case 1: 185 return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx); 186 case 2: 187 return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors)); 188 } 189 190 return NULL; 191 } 192 193 typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 194 195 class Tiling2GM : public skiagm::GM { 196 ShaderProc fProc; 197 SkString fName; 198 public: 199 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 200 fName.printf("tilemode_%s", name); 201 } 202 203 protected: 204 SkString onShortName() { 205 return fName; 206 } 207 208 SkISize onISize() { return SkISize::Make(880, 560); } 209 210 virtual void onDraw(SkCanvas* canvas) { 211 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 212 213 const SkScalar w = SkIntToScalar(gWidth); 214 const SkScalar h = SkIntToScalar(gHeight); 215 SkRect r = { -w, -h, w*2, h*2 }; 216 217 static const SkShader::TileMode gModes[] = { 218 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 219 }; 220 static const char* gModeNames[] = { 221 "Clamp", "Repeat", "Mirror" 222 }; 223 224 SkScalar y = SkIntToScalar(24); 225 SkScalar x = SkIntToScalar(66); 226 227 SkPaint p; 228 p.setAntiAlias(true); 229 p.setTextAlign(SkPaint::kCenter_Align); 230 231 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 232 SkString str(gModeNames[kx]); 233 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 234 x += r.width() * 4 / 3; 235 } 236 237 y += SkIntToScalar(16) + h; 238 p.setTextAlign(SkPaint::kRight_Align); 239 240 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 241 x = SkIntToScalar(16) + w; 242 243 SkString str(gModeNames[ky]); 244 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 245 246 x += SkIntToScalar(50); 247 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 248 SkPaint paint; 249 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 250 251 canvas->save(); 252 canvas->translate(x, y); 253 canvas->drawRect(r, paint); 254 canvas->restore(); 255 256 x += r.width() * 4 / 3; 257 } 258 y += r.height() * 4 / 3; 259 } 260 } 261 262 private: 263 typedef skiagm::GM INHERITED; 264 }; 265 266 ////////////////////////////////////////////////////////////////////////////// 267 268 DEF_GM( return new TilingGM(true); ) 269 DEF_GM( return new TilingGM(false); ) 270 DEF_GM( return new Tiling2GM(make_bm, "bitmap"); ) 271 DEF_GM( return new Tiling2GM(make_grad, "gradient"); ) 272
