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 "SkBlurDrawLooper.h" 20 21 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) { 22 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType)); 23 bm->eraseColor(SK_ColorTRANSPARENT); 24 25 SkCanvas canvas(*bm); 26 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 27 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 28 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 29 SkPaint paint; 30 31 paint.setDither(true); 32 paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, 33 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode))->unref(); 34 canvas.drawPaint(paint); 35 } 36 37 static void setup(SkPaint* paint, const SkBitmap& bm, bool filter, 38 SkShader::TileMode tmx, SkShader::TileMode tmy) { 39 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 40 paint->setShader(shader)->unref(); 41 paint->setFilterLevel(filter ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel); 42 } 43 44 static const SkColorType gColorTypes[] = { 45 kN32_SkColorType, 46 kRGB_565_SkColorType, 47 }; 48 49 class TilingGM : public skiagm::GM { 50 public: 51 TilingGM(bool powerOfTwoSize) 52 : fPowerOfTwoSize(powerOfTwoSize) { 53 } 54 55 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; 56 57 protected: 58 59 enum { 60 kPOTSize = 32, 61 kNPOTSize = 21, 62 }; 63 64 SkString onShortName() { 65 SkString name("tilemodes"); 66 if (!fPowerOfTwoSize) { 67 name.append("_npot"); 68 } 69 return name; 70 } 71 72 SkISize onISize() { return SkISize::Make(880, 560); } 73 74 virtual void onOnceBeforeDraw() SK_OVERRIDE { 75 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 76 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 77 makebm(&fTexture[i], gColorTypes[i], size, size); 78 } 79 } 80 81 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 82 83 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 84 85 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 86 87 static const char* gConfigNames[] = { "8888", "565", "4444" }; 88 89 static const bool gFilters[] = { false, true }; 90 static const char* gFilterNames[] = { "point", "bilinear" }; 91 92 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 93 static const char* gModeNames[] = { "C", "R", "M" }; 94 95 SkScalar y = SkIntToScalar(24); 96 SkScalar x = SkIntToScalar(10); 97 98 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 99 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 100 SkPaint p; 101 SkString str; 102 p.setAntiAlias(true); 103 p.setDither(true); 104 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 105 106 p.setTextAlign(SkPaint::kCenter_Align); 107 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 108 109 x += r.width() * 4 / 3; 110 } 111 } 112 113 y += SkIntToScalar(16); 114 115 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 116 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { 117 x = SkIntToScalar(10); 118 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 119 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 120 SkPaint paint; 121 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 122 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 123 if (!fPowerOfTwoSize) { 124 makebm(&fTexture[i], gColorTypes[i], size, size); 125 } 126 #endif 127 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); 128 paint.setDither(true); 129 130 canvas->save(); 131 canvas->translate(x, y); 132 canvas->drawRect(r, paint); 133 canvas->restore(); 134 135 x += r.width() * 4 / 3; 136 } 137 } 138 { 139 SkPaint p; 140 SkString str; 141 p.setAntiAlias(true); 142 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 143 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); 144 } 145 146 y += r.height() * 4 / 3; 147 } 148 } 149 } 150 151 private: 152 bool fPowerOfTwoSize; 153 typedef skiagm::GM INHERITED; 154 }; 155 156 static const int gWidth = 32; 157 static const int gHeight = 32; 158 159 static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 160 SkBitmap bm; 161 makebm(&bm, kN32_SkColorType, gWidth, gHeight); 162 return SkShader::CreateBitmapShader(bm, tx, ty); 163 } 164 165 static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 166 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 167 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 168 SkScalar rad = SkIntToScalar(gWidth)/2; 169 SkColor colors[] = { 0xFFFF0000, 0xFF0044FF }; 170 171 int index = (int)ty; 172 switch (index % 3) { 173 case 0: 174 return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx); 175 case 1: 176 return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx); 177 case 2: 178 return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors)); 179 } 180 181 return NULL; 182 } 183 184 typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 185 186 class Tiling2GM : public skiagm::GM { 187 ShaderProc fProc; 188 SkString fName; 189 public: 190 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 191 fName.printf("tilemode_%s", name); 192 } 193 194 protected: 195 virtual uint32_t onGetFlags() const SK_OVERRIDE { 196 return kSkipTiled_Flag; 197 } 198 199 SkString onShortName() { 200 return fName; 201 } 202 203 SkISize onISize() { return SkISize::Make(880, 560); } 204 205 virtual void onDraw(SkCanvas* canvas) { 206 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 207 208 const SkScalar w = SkIntToScalar(gWidth); 209 const SkScalar h = SkIntToScalar(gHeight); 210 SkRect r = { -w, -h, w*2, h*2 }; 211 212 static const SkShader::TileMode gModes[] = { 213 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 214 }; 215 static const char* gModeNames[] = { 216 "Clamp", "Repeat", "Mirror" 217 }; 218 219 SkScalar y = SkIntToScalar(24); 220 SkScalar x = SkIntToScalar(66); 221 222 SkPaint p; 223 p.setAntiAlias(true); 224 p.setTextAlign(SkPaint::kCenter_Align); 225 226 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 227 SkString str(gModeNames[kx]); 228 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 229 x += r.width() * 4 / 3; 230 } 231 232 y += SkIntToScalar(16) + h; 233 p.setTextAlign(SkPaint::kRight_Align); 234 235 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 236 x = SkIntToScalar(16) + w; 237 238 SkString str(gModeNames[ky]); 239 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 240 241 x += SkIntToScalar(50); 242 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 243 SkPaint paint; 244 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 245 246 canvas->save(); 247 canvas->translate(x, y); 248 canvas->drawRect(r, paint); 249 canvas->restore(); 250 251 x += r.width() * 4 / 3; 252 } 253 y += r.height() * 4 / 3; 254 } 255 } 256 257 private: 258 typedef skiagm::GM INHERITED; 259 }; 260 261 ////////////////////////////////////////////////////////////////////////////// 262 263 DEF_GM( return new TilingGM(true); ) 264 DEF_GM( return new TilingGM(false); ) 265 DEF_GM( return new Tiling2GM(make_bm, "bitmap"); ) 266 DEF_GM( return new Tiling2GM(make_grad, "gradient"); ) 267
