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->setFilterBitmap(filter); 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 SkBlurDrawLooper fLooper; 60 public: 61 TilingGM(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 = 32, 72 kNPOTSize = 21, 73 }; 74 75 SkString onShortName() { 76 SkString name("tilemodes"); 77 if (!fPowerOfTwoSize) { 78 name.append("_npot"); 79 } 80 return name; 81 } 82 83 SkISize onISize() { return SkISize::Make(880, 560); } 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 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 95 96 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 97 98 static const char* gConfigNames[] = { "8888", "565", "4444" }; 99 100 static const bool gFilters[] = { false, true }; 101 static const char* gFilterNames[] = { "point", "bilinear" }; 102 103 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 104 static const char* gModeNames[] = { "C", "R", "M" }; 105 106 SkScalar y = SkIntToScalar(24); 107 SkScalar x = SkIntToScalar(10); 108 109 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 110 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 111 SkPaint p; 112 SkString str; 113 p.setAntiAlias(true); 114 p.setDither(true); 115 p.setLooper(&fLooper); 116 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 117 118 p.setTextAlign(SkPaint::kCenter_Align); 119 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 120 121 x += r.width() * 4 / 3; 122 } 123 } 124 125 y += SkIntToScalar(16); 126 127 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 128 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { 129 x = SkIntToScalar(10); 130 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 131 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 132 SkPaint paint; 133 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 134 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 135 if (!fPowerOfTwoSize) { 136 makebm(&fTexture[i], gConfigs[i], size, size); 137 } 138 #endif 139 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); 140 paint.setDither(true); 141 142 canvas->save(); 143 canvas->translate(x, y); 144 canvas->drawRect(r, paint); 145 canvas->restore(); 146 147 x += r.width() * 4 / 3; 148 } 149 } 150 { 151 SkPaint p; 152 SkString str; 153 p.setAntiAlias(true); 154 p.setLooper(&fLooper); 155 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 156 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); 157 } 158 159 y += r.height() * 4 / 3; 160 } 161 } 162 } 163 164 private: 165 bool fPowerOfTwoSize; 166 typedef skiagm::GM INHERITED; 167 }; 168 169 static const int gWidth = 32; 170 static const int gHeight = 32; 171 172 static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 173 SkBitmap bm; 174 makebm(&bm, SkBitmap::kARGB_8888_Config, gWidth, gHeight); 175 return SkShader::CreateBitmapShader(bm, tx, ty); 176 } 177 178 static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 179 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 180 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 181 SkScalar rad = SkIntToScalar(gWidth)/2; 182 SkColor colors[] = { 0xFFFF0000, 0xFF0044FF }; 183 184 int index = (int)ty; 185 switch (index % 3) { 186 case 0: 187 return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx); 188 case 1: 189 return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx); 190 case 2: 191 return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors)); 192 } 193 194 return NULL; 195 } 196 197 typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 198 199 class Tiling2GM : public skiagm::GM { 200 ShaderProc fProc; 201 SkString fName; 202 public: 203 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 204 fName.printf("tilemode_%s", name); 205 } 206 207 protected: 208 SkString onShortName() { 209 return fName; 210 } 211 212 SkISize onISize() { return SkISize::Make(880, 560); } 213 214 virtual void onDraw(SkCanvas* canvas) { 215 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 216 217 const SkScalar w = SkIntToScalar(gWidth); 218 const SkScalar h = SkIntToScalar(gHeight); 219 SkRect r = { -w, -h, w*2, h*2 }; 220 221 static const SkShader::TileMode gModes[] = { 222 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 223 }; 224 static const char* gModeNames[] = { 225 "Clamp", "Repeat", "Mirror" 226 }; 227 228 SkScalar y = SkIntToScalar(24); 229 SkScalar x = SkIntToScalar(66); 230 231 SkPaint p; 232 p.setAntiAlias(true); 233 p.setTextAlign(SkPaint::kCenter_Align); 234 235 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 236 SkString str(gModeNames[kx]); 237 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 238 x += r.width() * 4 / 3; 239 } 240 241 y += SkIntToScalar(16) + h; 242 p.setTextAlign(SkPaint::kRight_Align); 243 244 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 245 x = SkIntToScalar(16) + w; 246 247 SkString str(gModeNames[ky]); 248 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 249 250 x += SkIntToScalar(50); 251 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 252 SkPaint paint; 253 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 254 255 canvas->save(); 256 canvas->translate(x, y); 257 canvas->drawRect(r, paint); 258 canvas->restore(); 259 260 x += r.width() * 4 / 3; 261 } 262 y += r.height() * 4 / 3; 263 } 264 } 265 266 private: 267 typedef skiagm::GM INHERITED; 268 }; 269 270 ////////////////////////////////////////////////////////////////////////////// 271 272 DEF_GM( return new TilingGM(true); ) 273 DEF_GM( return new TilingGM(false); ) 274 DEF_GM( return new Tiling2GM(make_bm, "bitmap"); ) 275 DEF_GM( return new Tiling2GM(make_grad, "gradient"); ) 276
