| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "Sample.h" |
| #include "SkCanvas.h" |
| #include "SkFont.h" |
| #include "SkRandom.h" |
| #include "SkPaint.h" |
| #include "SkUTF.h" |
| #if SK_SUPPORT_GPU |
| #include "GrRectanizer_pow2.h" |
| #include "GrRectanizer_skyline.h" |
| |
| // This slide visualizes the various GrRectanizer-derived classes behavior |
| // for various input sets |
| // 'j' will cycle through the various rectanizers |
| // Pow2 -> GrRectanizerPow2 |
| // Skyline -> GrRectanizerSkyline |
| // 'h' will cycle through the various rect sets |
| // Rand -> random rects from 2-256 |
| // Pow2Rand -> random power of 2 sized rects from 2-256 |
| // SmallPow2 -> 128x128 rects |
| class RectanizerView : public Sample { |
| public: |
| RectanizerView() |
| : fCurRandRect(0) |
| , fCurRectanizer(0) { |
| for (int i = 0; i < 3; ++i) { |
| fRects[i].setReserve(kNumRandRects); |
| } |
| fRectLocations.setReserve(kNumRandRects); |
| |
| SkRandom random; |
| for (int i = 0; i < kNumRandRects; ++i) { |
| *fRects[0].append() = SkISize::Make(random.nextRangeU(kMinRectSize, kMaxRectSize), |
| random.nextRangeU(kMinRectSize, kMaxRectSize)); |
| *fRects[1].append() = SkISize::Make( |
| GrNextPow2(random.nextRangeU(kMinRectSize, kMaxRectSize)), |
| GrNextPow2(random.nextRangeU(kMinRectSize, kMaxRectSize))); |
| *fRects[2].append() = SkISize::Make(128, 128); |
| *fRectLocations.append() = SkIPoint16::Make(0, 0); |
| } |
| |
| fCurRects = &fRects[0]; |
| |
| fRectanizers.push_back( |
| std::unique_ptr<GrRectanizer>(new GrRectanizerPow2(kWidth, kHeight))); |
| fRectanizers.push_back( |
| std::unique_ptr<GrRectanizer>(new GrRectanizerSkyline(kWidth, kHeight))); |
| } |
| |
| protected: |
| bool onQuery(Sample::Event* evt) override { |
| if (Sample::TitleQ(*evt)) { |
| Sample::TitleR(evt, "Rectanizer"); |
| return true; |
| } |
| SkUnichar uni; |
| if (Sample::CharQ(*evt, &uni)) { |
| char utf8[SkUTF::kMaxBytesInUTF8Sequence]; |
| size_t size = SkUTF::ToUTF8(uni, utf8); |
| // Only consider events for single char keys |
| if (1 == size) { |
| switch (utf8[0]) { |
| case kCycleRectanizerKey: |
| this->cycleRectanizer(); |
| return true; |
| case kCycleRectsKey: |
| this->cycleRects(); |
| return true; |
| default: |
| break; |
| } |
| } |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void onDrawContent(SkCanvas* canvas) override { |
| if (fCurRandRect < kNumRandRects) { |
| if (fRectanizers[fCurRectanizer]->addRect((*fCurRects)[fCurRandRect].fWidth, |
| (*fCurRects)[fCurRandRect].fHeight, |
| &fRectLocations[fCurRandRect])) { |
| ++fCurRandRect; |
| } |
| } |
| |
| SkFont blackBigFont; |
| blackBigFont.setSize(20); |
| SkPaint blackStroke; |
| blackStroke.setStyle(SkPaint::kStroke_Style); |
| SkPaint redFill; |
| redFill.setColor(SK_ColorRED); |
| |
| SkRect r = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight)); |
| |
| canvas->clear(SK_ColorWHITE); |
| canvas->drawRect(r, blackStroke); |
| |
| long totArea = 0; |
| for (int i = 0; i < fCurRandRect; ++i) { |
| r = SkRect::MakeXYWH(SkIntToScalar(fRectLocations[i].fX), |
| SkIntToScalar(fRectLocations[i].fY), |
| SkIntToScalar((*fCurRects)[i].fWidth), |
| SkIntToScalar((*fCurRects)[i].fHeight)); |
| canvas->drawRect(r, redFill); |
| canvas->drawRect(r, blackStroke); |
| totArea += (*fCurRects)[i].fWidth * (*fCurRects)[i].fHeight; |
| } |
| |
| SkString str; |
| |
| str.printf("%s-%s: tot Area: %ld %%full: %.2f (%.2f) numTextures: %d/%d", |
| this->getRectanizerName(), |
| this->getRectsName(), |
| totArea, |
| 100.0f * fRectanizers[fCurRectanizer]->percentFull(), |
| 100.0f * totArea / ((float)kWidth*kHeight), |
| fCurRandRect, |
| kNumRandRects); |
| canvas->drawString(str, 50, kHeight + 50, blackBigFont, SkPaint()); |
| |
| str.printf("Press \'j\' to toggle rectanizer"); |
| canvas->drawString(str, 50, kHeight + 100, blackBigFont, SkPaint()); |
| |
| str.printf("Press \'h\' to toggle rects"); |
| canvas->drawString(str, 50, kHeight + 150, blackBigFont, SkPaint()); |
| } |
| |
| private: |
| static const int kWidth = 1024; |
| static const int kHeight = 1024; |
| static const int kNumRandRects = 200; |
| static const char kCycleRectanizerKey = 'j'; |
| static const char kCycleRectsKey = 'h'; |
| static const int kMinRectSize = 2; |
| static const int kMaxRectSize = 256; |
| |
| int fCurRandRect; |
| SkTDArray<SkISize> fRects[3]; |
| SkTDArray<SkISize>* fCurRects; |
| SkTDArray<SkIPoint16> fRectLocations; |
| SkTArray<std::unique_ptr<GrRectanizer>> fRectanizers; |
| int fCurRectanizer; |
| |
| const char* getRectanizerName() const { |
| if (!fCurRectanizer) { |
| return "Pow2"; |
| } else { |
| return "Skyline"; |
| } |
| } |
| |
| void cycleRectanizer() { |
| fCurRectanizer = (fCurRectanizer + 1) % fRectanizers.count(); |
| |
| fRectanizers[fCurRectanizer]->reset(); |
| fCurRandRect = 0; |
| } |
| |
| const char* getRectsName() const { |
| if (fCurRects == &fRects[0]) { |
| return "Rand"; |
| } else if (fCurRects == &fRects[1]) { |
| return "Pow2Rand"; |
| } else { |
| return "SmallPow2"; |
| } |
| } |
| |
| void cycleRects() { |
| if (fCurRects == &fRects[0]) { |
| fCurRects = &fRects[1]; |
| } else if (fCurRects == &fRects[1]) { |
| fCurRects = &fRects[2]; |
| } else { |
| fCurRects = &fRects[0]; |
| } |
| |
| fRectanizers[fCurRectanizer]->reset(); |
| fCurRandRect = 0; |
| } |
| |
| typedef Sample INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_SAMPLE( return new RectanizerView(); ) |
| |
| #endif |