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| 1 /* |
| 2 * Copyright 2014 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 |
| 8 #include "gm.h" |
| 9 #include "SampleCode.h" |
| 10 #include "SkRandom.h" |
| 11 #include "SkUtils.h" |
| 12 #if SK_SUPPORT_GPU |
| 13 #include "GrRectanizer_pow2.h" |
| 14 #include "GrRectanizer_skyline.h" |
| 15 |
| 16 |
| 17 // This slide visualizes the various GrRectanizer-derived classes behavior |
| 18 // for various input sets |
| 19 // 'j' will cycle through the various rectanizers |
| 20 // Pow2 -> GrRectanizerPow2 |
| 21 // Skyline -> GrRectanizerSkyline |
| 22 // 'h' will cycle through the various rect sets |
| 23 // Rand -> random rects from 2-256 |
| 24 // Pow2Rand -> random power of 2 sized rects from 2-256 |
| 25 // SmallPow2 -> 128x128 rects |
| 26 class RectanizerView : public SampleView { |
| 27 public: |
| 28 RectanizerView() |
| 29 : fCurRandRect(0) { |
| 30 for (int i = 0; i < 3; ++i) { |
| 31 fRects[i].setReserve(kNumRandRects); |
| 32 } |
| 33 fRectLocations.setReserve(kNumRandRects); |
| 34 |
| 35 SkRandom random; |
| 36 for (int i = 0; i < kNumRandRects; ++i) { |
| 37 *fRects[0].append() = SkISize::Make(random.nextRangeU(kMinRectSize,
kMaxRectSize), |
| 38 random.nextRangeU(kMinRectSize,
kMaxRectSize)); |
| 39 *fRects[1].append() = SkISize::Make( |
| 40 GrNextPow2(random.nextRangeU(kMinRectSize, kMaxRectSize)
), |
| 41 GrNextPow2(random.nextRangeU(kMinRectSize, kMaxRectSize)
)); |
| 42 *fRects[2].append() = SkISize::Make(128, 128); |
| 43 *fRectLocations.append() = GrIPoint16::Make(0, 0); |
| 44 } |
| 45 |
| 46 fCurRects = &fRects[0]; |
| 47 |
| 48 fRectanizers[0] = new GrRectanizerPow2(kWidth, kHeight); |
| 49 fRectanizers[1] = new GrRectanizerSkyline(kWidth, kHeight); |
| 50 fCurRectanizer = fRectanizers[0]; |
| 51 } |
| 52 |
| 53 protected: |
| 54 virtual bool onQuery(SkEvent* evt) SK_OVERRIDE { |
| 55 if (SampleCode::TitleQ(*evt)) { |
| 56 SampleCode::TitleR(evt, "Rectanizer"); |
| 57 return true; |
| 58 } |
| 59 SkUnichar uni; |
| 60 if (SampleCode::CharQ(*evt, &uni)) { |
| 61 char utf8[kMaxBytesInUTF8Sequence]; |
| 62 size_t size = SkUTF8_FromUnichar(uni, utf8); |
| 63 // Only consider events for single char keys |
| 64 if (1 == size) { |
| 65 switch (utf8[0]) { |
| 66 case kCycleRectanizerKey: |
| 67 this->cycleRectanizer(); |
| 68 return true; |
| 69 case kCycleRectsKey: |
| 70 this->cycleRects(); |
| 71 return true; |
| 72 default: |
| 73 break; |
| 74 } |
| 75 } |
| 76 } |
| 77 return this->INHERITED::onQuery(evt); |
| 78 } |
| 79 |
| 80 virtual void onDrawContent(SkCanvas* canvas) SK_OVERRIDE { |
| 81 if (fCurRandRect < kNumRandRects) { |
| 82 if (fCurRectanizer->addRect((*fCurRects)[fCurRandRect].fWidth, |
| 83 (*fCurRects)[fCurRandRect].fHeight, |
| 84 &fRectLocations[fCurRandRect])) { |
| 85 ++fCurRandRect; |
| 86 } |
| 87 } |
| 88 |
| 89 SkPaint blackBigFont; |
| 90 blackBigFont.setTextSize(20); |
| 91 SkPaint blackStroke; |
| 92 blackStroke.setStyle(SkPaint::kStroke_Style); |
| 93 SkPaint redFill; |
| 94 redFill.setColor(SK_ColorRED); |
| 95 |
| 96 SkRect r = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight))
; |
| 97 |
| 98 canvas->clear(SK_ColorWHITE); |
| 99 canvas->drawRect(r, blackStroke); |
| 100 |
| 101 long totArea = 0; |
| 102 for (int i = 0; i < fCurRandRect; ++i) { |
| 103 r = SkRect::MakeXYWH(SkIntToScalar(fRectLocations[i].fX), |
| 104 SkIntToScalar(fRectLocations[i].fY), |
| 105 SkIntToScalar((*fCurRects)[i].fWidth), |
| 106 SkIntToScalar((*fCurRects)[i].fHeight)); |
| 107 canvas->drawRect(r, redFill); |
| 108 canvas->drawRect(r, blackStroke); |
| 109 totArea += (*fCurRects)[i].fWidth * (*fCurRects)[i].fHeight; |
| 110 } |
| 111 |
| 112 SkString str; |
| 113 |
| 114 str.printf("%s-%s: tot Area: %ld %%full: %.2f (%.2f) numTextures: %d/%d"
, |
| 115 this->getRectanizerName(), |
| 116 this->getRectsName(), |
| 117 totArea, |
| 118 100.0f * fCurRectanizer->percentFull(), |
| 119 100.0f * totArea / ((float)kWidth*kHeight), |
| 120 fCurRandRect, |
| 121 kNumRandRects); |
| 122 canvas->drawText(str.c_str(), str.size(), 50, kHeight + 50, blackBigFont
); |
| 123 |
| 124 str.printf("Press \'j\' to toggle rectanizer"); |
| 125 canvas->drawText(str.c_str(), str.size(), 50, kHeight + 100, blackBigFon
t); |
| 126 |
| 127 str.printf("Press \'h\' to toggle rects"); |
| 128 canvas->drawText(str.c_str(), str.size(), 50, kHeight + 150, blackBigFon
t); |
| 129 |
| 130 this->inval(NULL); |
| 131 } |
| 132 |
| 133 private: |
| 134 static const int kWidth = 1024; |
| 135 static const int kHeight = 1024; |
| 136 static const int kNumRandRects = 200; |
| 137 static const char kCycleRectanizerKey = 'j'; |
| 138 static const char kCycleRectsKey = 'h'; |
| 139 static const int kMinRectSize = 2; |
| 140 static const int kMaxRectSize = 256; |
| 141 |
| 142 int fCurRandRect; |
| 143 SkTDArray<SkISize> fRects[3]; |
| 144 SkTDArray<SkISize>* fCurRects; |
| 145 SkTDArray<GrIPoint16> fRectLocations; |
| 146 GrRectanizer* fRectanizers[2]; |
| 147 GrRectanizer* fCurRectanizer; |
| 148 |
| 149 const char* getRectanizerName() const { |
| 150 if (fCurRectanizer == fRectanizers[0]) { |
| 151 return "Pow2"; |
| 152 } else { |
| 153 return "Skyline"; |
| 154 } |
| 155 } |
| 156 |
| 157 void cycleRectanizer() { |
| 158 if (fCurRectanizer == fRectanizers[0]) { |
| 159 fCurRectanizer = fRectanizers[1]; |
| 160 } else { |
| 161 fCurRectanizer = fRectanizers[0]; |
| 162 } |
| 163 |
| 164 fCurRectanizer->reset(); |
| 165 fCurRandRect = 0; |
| 166 } |
| 167 |
| 168 const char* getRectsName() const { |
| 169 if (fCurRects == &fRects[0]) { |
| 170 return "Rand"; |
| 171 } else if (fCurRects == &fRects[1]) { |
| 172 return "Pow2Rand"; |
| 173 } else { |
| 174 return "SmallPow2"; |
| 175 } |
| 176 } |
| 177 |
| 178 void cycleRects() { |
| 179 if (fCurRects == &fRects[0]) { |
| 180 fCurRects = &fRects[1]; |
| 181 } else if (fCurRects == &fRects[1]) { |
| 182 fCurRects = &fRects[2]; |
| 183 } else { |
| 184 fCurRects = &fRects[0]; |
| 185 } |
| 186 |
| 187 fCurRectanizer->reset(); |
| 188 fCurRandRect = 0; |
| 189 } |
| 190 |
| 191 typedef SampleView INHERITED; |
| 192 }; |
| 193 |
| 194 ////////////////////////////////////////////////////////////////////////////// |
| 195 static SkView* MyFactory() { return new RectanizerView; } |
| 196 static SkViewRegister reg(MyFactory); |
| 197 |
| 198 #endif |
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