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/gm.h" 9 #include "include/core/SkBlurTypes.h" 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColor.h" 12 #include "include/core/SkMaskFilter.h" 13 #include "include/core/SkPaint.h" 14 #include "include/core/SkRefCnt.h" 15 #include "include/core/SkScalar.h" 16 #include "include/core/SkSize.h" 17 #include "include/core/SkString.h" 18 #include "include/core/SkTypes.h" 19 #include "src/core/SkBlurMask.h" 20 21 class BlurCirclesGM : public skiagm::GM { 22 public: BlurCirclesGM()23 BlurCirclesGM() { } 24 25 protected: runAsBench() const26 bool runAsBench() const override { return true; } 27 getName() const28 SkString getName() const override { return SkString("blurcircles"); } 29 getISize()30 SkISize getISize() override { return SkISize::Make(950, 950); } 31 onOnceBeforeDraw()32 void onOnceBeforeDraw() override { 33 const float blurRadii[kNumBlurs] = {1.f, 5.f, 10.f, 20.f}; 34 35 for (int i = 0; i < kNumBlurs; ++i) { 36 fBlurFilters[i] = SkMaskFilter::MakeBlur( 37 kNormal_SkBlurStyle, 38 SkBlurMask::ConvertRadiusToSigma(blurRadii[i])); 39 } 40 } 41 onDraw(SkCanvas * canvas)42 void onDraw(SkCanvas* canvas) override { 43 canvas->scale(1.5f, 1.5f); 44 canvas->translate(50,50); 45 46 const float circleRadii[] = {5.f, 10.f, 25.f, 50.f}; 47 48 for (size_t i = 0; i < kNumBlurs; ++i) { 49 SkAutoCanvasRestore autoRestore(canvas, true); 50 canvas->translate(0, 150.f*i); 51 for (size_t j = 0; j < std::size(circleRadii); ++j) { 52 SkPaint paint; 53 paint.setColor(SK_ColorBLACK); 54 paint.setMaskFilter(fBlurFilters[i]); 55 56 static constexpr SkPoint kCenter = {50.f, 50.f}; 57 // Throw a rotation in the mix to make sure GPU fast path handles it correctly. 58 canvas->save(); 59 canvas->rotate(j*22.f, kCenter.fX, kCenter.fY); 60 canvas->drawCircle(kCenter, circleRadii[j], paint); 61 canvas->restore(); 62 canvas->translate(150.f, 0.f); 63 } 64 } 65 } 66 private: 67 inline static constexpr int kNumBlurs = 4; 68 69 sk_sp<SkMaskFilter> fBlurFilters[kNumBlurs]; 70 71 using INHERITED = skiagm::GM; 72 }; 73 74 DEF_GM(return new BlurCirclesGM();) 75