| /* |
| * 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 "gm/gm.h" |
| #include "include/core/SkBlurTypes.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkMaskFilter.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "src/core/SkBlurMask.h" |
| |
| class BlurCirclesGM : public skiagm::GM { |
| public: |
| BlurCirclesGM() { } |
| |
| protected: |
| bool runAsBench() const override { return true; } |
| |
| SkString getName() const override { return SkString("blurcircles"); } |
| |
| SkISize getISize() override { return SkISize::Make(950, 950); } |
| |
| void onOnceBeforeDraw() override { |
| const float blurRadii[kNumBlurs] = {1.f, 5.f, 10.f, 20.f}; |
| |
| for (int i = 0; i < kNumBlurs; ++i) { |
| fBlurFilters[i] = SkMaskFilter::MakeBlur( |
| kNormal_SkBlurStyle, |
| SkBlurMask::ConvertRadiusToSigma(blurRadii[i])); |
| } |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->scale(1.5f, 1.5f); |
| canvas->translate(50,50); |
| |
| const float circleRadii[] = {5.f, 10.f, 25.f, 50.f}; |
| |
| for (size_t i = 0; i < kNumBlurs; ++i) { |
| SkAutoCanvasRestore autoRestore(canvas, true); |
| canvas->translate(0, 150.f*i); |
| for (size_t j = 0; j < std::size(circleRadii); ++j) { |
| SkPaint paint; |
| paint.setColor(SK_ColorBLACK); |
| paint.setMaskFilter(fBlurFilters[i]); |
| |
| static constexpr SkPoint kCenter = {50.f, 50.f}; |
| // Throw a rotation in the mix to make sure GPU fast path handles it correctly. |
| canvas->save(); |
| canvas->rotate(j*22.f, kCenter.fX, kCenter.fY); |
| canvas->drawCircle(kCenter, circleRadii[j], paint); |
| canvas->restore(); |
| canvas->translate(150.f, 0.f); |
| } |
| } |
| } |
| private: |
| inline static constexpr int kNumBlurs = 4; |
| |
| sk_sp<SkMaskFilter> fBlurFilters[kNumBlurs]; |
| |
| using INHERITED = skiagm::GM; |
| }; |
| |
| DEF_GM(return new BlurCirclesGM();) |