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 "SkColorFilter.h" 14 15 // effects 16 #include "SkGradientShader.h" 17 #include "SkBlurDrawLooper.h" 18 19 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) { 20 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType)); 21 bm->eraseColor(SK_ColorTRANSPARENT); 22 23 SkCanvas canvas(*bm); 24 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 25 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 26 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 27 SkPaint paint; 28 29 paint.setDither(true); 30 paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, 31 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode))->unref(); 32 canvas.drawPaint(paint); 33 } 34 35 static void setup(SkPaint* paint, const SkBitmap& bm, SkFilterQuality filter_level, 36 SkShader::TileMode tmx, SkShader::TileMode tmy) { 37 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 38 paint->setShader(shader)->unref(); 39 paint->setFilterQuality(filter_level); 40 } 41 42 static const SkColorType gColorTypes[] = { 43 kN32_SkColorType, 44 kRGB_565_SkColorType, 45 }; 46 47 class ScaledTilingGM : public skiagm::GM { 48 public: 49 ScaledTilingGM(bool powerOfTwoSize) 50 : fPowerOfTwoSize(powerOfTwoSize) { 51 } 52 53 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; 54 55 protected: 56 enum { 57 kPOTSize = 4, 58 kNPOTSize = 3, 59 }; 60 61 SkString onShortName() override { 62 SkString name("scaled_tilemodes"); 63 if (!fPowerOfTwoSize) { 64 name.append("_npot"); 65 } 66 return name; 67 } 68 69 SkISize onISize() override { return SkISize::Make(880, 760); } 70 71 void onOnceBeforeDraw() override { 72 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 73 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 74 makebm(&fTexture[i], gColorTypes[i], size, size); 75 } 76 } 77 78 void onDraw(SkCanvas* canvas) override { 79 float scale = 32.f/kPOTSize; 80 81 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 82 83 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 84 85 static const char* gColorTypeNames[] = { "8888" , "565", "4444" }; 86 87 static const SkFilterQuality gFilterQualitys[] = 88 { kNone_SkFilterQuality, 89 kLow_SkFilterQuality, 90 kMedium_SkFilterQuality, 91 kHigh_SkFilterQuality }; 92 static const char* gFilterNames[] = { "None", "Low", "Medium", "High" }; 93 94 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 95 static const char* gModeNames[] = { "C", "R", "M" }; 96 97 SkScalar y = SkIntToScalar(24); 98 SkScalar x = SkIntToScalar(10)/scale; 99 100 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 101 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 102 SkPaint p; 103 SkString str; 104 p.setAntiAlias(true); 105 sk_tool_utils::set_portable_typeface(&p); 106 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 107 108 p.setTextAlign(SkPaint::kCenter_Align); 109 canvas->drawText(str.c_str(), str.size(), scale*(x + r.width()/2), y, p); 110 111 x += r.width() * 4 / 3; 112 } 113 } 114 115 y = SkIntToScalar(40) / scale; 116 117 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 118 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterQualitys); j++) { 119 x = SkIntToScalar(10)/scale; 120 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 121 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 122 SkPaint paint; 123 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 124 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 125 if (!fPowerOfTwoSize) { 126 makebm(&fTexture[i], gColorTypes[i], size, size); 127 } 128 #endif 129 setup(&paint, fTexture[i], gFilterQualitys[j], gModes[kx], gModes[ky]); 130 paint.setDither(true); 131 132 canvas->save(); 133 canvas->scale(scale,scale); 134 canvas->translate(x, y); 135 canvas->drawRect(r, paint); 136 canvas->restore(); 137 138 x += r.width() * 4 / 3; 139 } 140 } 141 { 142 SkPaint p; 143 SkString str; 144 p.setAntiAlias(true); 145 sk_tool_utils::set_portable_typeface(&p); 146 str.printf("%s, %s", gColorTypeNames[i], gFilterNames[j]); 147 canvas->drawText(str.c_str(), str.size(), scale*x, scale*(y + r.height() * 2 / 3), p); 148 } 149 150 y += r.height() * 4 / 3; 151 } 152 } 153 } 154 155 private: 156 bool fPowerOfTwoSize; 157 typedef skiagm::GM INHERITED; 158 }; 159 160 static const int gWidth = 32; 161 static const int gHeight = 32; 162 163 static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 164 SkBitmap bm; 165 makebm(&bm, kN32_SkColorType, gWidth, gHeight); 166 return SkShader::CreateBitmapShader(bm, tx, ty); 167 } 168 169 static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 170 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 171 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 172 SkScalar rad = SkIntToScalar(gWidth)/2; 173 SkColor colors[] = { 0xFFFF0000, sk_tool_utils::color_to_565(0xFF0044FF) }; 174 175 int index = (int)ty; 176 switch (index % 3) { 177 case 0: 178 return SkGradientShader::CreateLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx); 179 case 1: 180 return SkGradientShader::CreateRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx); 181 case 2: 182 return SkGradientShader::CreateSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors)); 183 } 184 185 return nullptr; 186 } 187 188 typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 189 190 class ScaledTiling2GM : public skiagm::GM { 191 ShaderProc fProc; 192 SkString fName; 193 public: 194 ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 195 fName.printf("scaled_tilemode_%s", name); 196 } 197 198 protected: 199 200 SkString onShortName() override { 201 return fName; 202 } 203 204 SkISize onISize() override { return SkISize::Make(880, 560); } 205 206 void onDraw(SkCanvas* canvas) override { 207 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 208 209 const SkScalar w = SkIntToScalar(gWidth); 210 const SkScalar h = SkIntToScalar(gHeight); 211 SkRect r = { -w, -h, w*2, h*2 }; 212 213 static const SkShader::TileMode gModes[] = { 214 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 215 }; 216 static const char* gModeNames[] = { 217 "Clamp", "Repeat", "Mirror" 218 }; 219 220 SkScalar y = SkIntToScalar(24); 221 SkScalar x = SkIntToScalar(66); 222 223 SkPaint p; 224 p.setAntiAlias(true); 225 sk_tool_utils::set_portable_typeface(&p); 226 p.setTextAlign(SkPaint::kCenter_Align); 227 228 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 229 SkString str(gModeNames[kx]); 230 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 231 x += r.width() * 4 / 3; 232 } 233 234 y += SkIntToScalar(16) + h; 235 p.setTextAlign(SkPaint::kRight_Align); 236 237 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 238 x = SkIntToScalar(16) + w; 239 240 SkString str(gModeNames[ky]); 241 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 242 243 x += SkIntToScalar(50); 244 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 245 SkPaint paint; 246 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 247 248 canvas->save(); 249 canvas->translate(x, y); 250 canvas->drawRect(r, paint); 251 canvas->restore(); 252 253 x += r.width() * 4 / 3; 254 } 255 y += r.height() * 4 / 3; 256 } 257 } 258 259 private: 260 typedef skiagm::GM INHERITED; 261 }; 262 263 ////////////////////////////////////////////////////////////////////////////// 264 265 DEF_GM( return new ScaledTilingGM(true); ) 266 DEF_GM( return new ScaledTilingGM(false); ) 267 DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); ) 268 DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); ) 269
