1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 #include "gm.h" 8 #include "sk_tool_utils.h" 9 #include "SkColorFilter.h" 10 #include "SkMaskFilter.h" 11 #include "SkPath.h" 12 #include "SkRegion.h" 13 #include "SkShader.h" 14 #include "SkUtils.h" 15 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::MakeLinear(pts, colors, pos, SK_ARRAY_COUNT(colors), 33 SkShader::kClamp_TileMode)); 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 paint->setShader(SkShader::MakeBitmapShader(bm, tmx, tmy)); 40 paint->setFilterQuality(filter ? kLow_SkFilterQuality : kNone_SkFilterQuality); 41 } 42 43 constexpr SkColorType gColorTypes[] = { 44 kN32_SkColorType, 45 kRGB_565_SkColorType, 46 }; 47 48 class TilingGM : public skiagm::GM { 49 public: 50 TilingGM(bool powerOfTwoSize) 51 : fPowerOfTwoSize(powerOfTwoSize) { 52 } 53 54 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)]; 55 56 protected: 57 58 enum { 59 kPOTSize = 32, 60 kNPOTSize = 21, 61 }; 62 63 SkString onShortName() override { 64 SkString name("tilemodes"); 65 if (!fPowerOfTwoSize) { 66 name.append("_npot"); 67 } 68 return name; 69 } 70 71 SkISize onISize() override { return SkISize::Make(880, 560); } 72 73 void onOnceBeforeDraw() override { 74 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 75 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 76 makebm(&fTexture[i], gColorTypes[i], size, size); 77 } 78 } 79 80 void onDraw(SkCanvas* canvas) override { 81 82 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize; 83 84 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) }; 85 86 const char* gConfigNames[] = { "8888", "565", "4444" }; 87 88 constexpr bool gFilters[] = { false, true }; 89 static const char* gFilterNames[] = { "point", "bilinear" }; 90 91 constexpr SkShader::TileMode gModes[] = { 92 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 sk_tool_utils::set_portable_typeface(&p); 104 p.setDither(true); 105 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 106 107 p.setTextAlign(SkPaint::kCenter_Align); 108 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 109 110 x += r.width() * 4 / 3; 111 } 112 } 113 114 y += SkIntToScalar(16); 115 116 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) { 117 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { 118 x = SkIntToScalar(10); 119 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 120 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 121 SkPaint paint; 122 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue 123 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug. 124 if (!fPowerOfTwoSize) { 125 makebm(&fTexture[i], gColorTypes[i], size, size); 126 } 127 #endif 128 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); 129 paint.setDither(true); 130 131 canvas->save(); 132 canvas->translate(x, y); 133 canvas->drawRect(r, paint); 134 canvas->restore(); 135 136 x += r.width() * 4 / 3; 137 } 138 } 139 { 140 SkPaint p; 141 SkString str; 142 p.setAntiAlias(true); 143 sk_tool_utils::set_portable_typeface(&p); 144 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 145 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); 146 } 147 148 y += r.height() * 4 / 3; 149 } 150 } 151 } 152 153 private: 154 bool fPowerOfTwoSize; 155 typedef skiagm::GM INHERITED; 156 }; 157 158 constexpr int gWidth = 32; 159 constexpr int gHeight = 32; 160 161 static sk_sp<SkShader> make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 162 SkBitmap bm; 163 makebm(&bm, kN32_SkColorType, gWidth, gHeight); 164 return SkShader::MakeBitmapShader(bm, tx, ty); 165 } 166 167 static sk_sp<SkShader> make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 168 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 169 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 170 SkScalar rad = SkIntToScalar(gWidth)/2; 171 SkColor colors[] = { 0xFFFF0000, sk_tool_utils::color_to_565(0xFF0044FF) }; 172 173 int index = (int)ty; 174 switch (index % 3) { 175 case 0: 176 return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx); 177 case 1: 178 return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx); 179 case 2: 180 return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors)); 181 } 182 return nullptr; 183 } 184 185 typedef sk_sp<SkShader> (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 186 187 class Tiling2GM : public skiagm::GM { 188 ShaderProc fProc; 189 SkString fName; 190 public: 191 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 192 fName.printf("tilemode_%s", name); 193 } 194 195 protected: 196 197 SkString onShortName() override { 198 return fName; 199 } 200 201 SkISize onISize() override { return SkISize::Make(650, 610); } 202 203 void onDraw(SkCanvas* canvas) override { 204 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 205 206 const SkScalar w = SkIntToScalar(gWidth); 207 const SkScalar h = SkIntToScalar(gHeight); 208 SkRect r = { -w, -h, w*2, h*2 }; 209 210 constexpr SkShader::TileMode gModes[] = { 211 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 212 }; 213 const char* gModeNames[] = { 214 "Clamp", "Repeat", "Mirror" 215 }; 216 217 SkScalar y = SkIntToScalar(24); 218 SkScalar x = SkIntToScalar(66); 219 220 SkPaint p; 221 p.setAntiAlias(true); 222 sk_tool_utils::set_portable_typeface(&p); 223 p.setTextAlign(SkPaint::kCenter_Align); 224 225 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 226 SkString str(gModeNames[kx]); 227 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 228 x += r.width() * 4 / 3; 229 } 230 231 y += SkIntToScalar(16) + h; 232 p.setTextAlign(SkPaint::kRight_Align); 233 234 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 235 x = SkIntToScalar(16) + w; 236 237 SkString str(gModeNames[ky]); 238 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 239 240 x += SkIntToScalar(50); 241 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 242 SkPaint paint; 243 paint.setShader(fProc(gModes[kx], gModes[ky])); 244 245 canvas->save(); 246 canvas->translate(x, y); 247 canvas->drawRect(r, paint); 248 canvas->restore(); 249 250 x += r.width() * 4 / 3; 251 } 252 y += r.height() * 4 / 3; 253 } 254 } 255 256 private: 257 typedef skiagm::GM INHERITED; 258 }; 259 260 ////////////////////////////////////////////////////////////////////////////// 261 262 DEF_GM( return new TilingGM(true); ) 263 DEF_GM( return new TilingGM(false); ) 264 DEF_GM( return new Tiling2GM(make_bm, "bitmap"); ) 265 DEF_GM( return new Tiling2GM(make_grad, "gradient"); ) 266
