| /* |
| * Copyright 2016 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/SkPathBuilder.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/utils/SkRandom.h" |
| #include "src/core/SkBlurMask.h" |
| #include "tools/timer/TimeUtils.h" |
| |
| /** |
| * In GM mode this draws an array of circles with different radii and different blur radii. Below |
| * each circle an almost-circle path is drawn with the same blur filter for comparison. |
| * |
| * In Sample mode this draws a single circle and almost-circle with animating radius and blur |
| * radius. |
| * |
| * Bench mode draws the same as GM mode but without the comparison almost-circle paths. It also |
| * slightly perturbs the blur and circle radii to stress caching of blurred profiles in GPU mode. |
| */ |
| class BlurCircles2GM : public skiagm::GM { |
| public: |
| BlurCircles2GM() { |
| fAnimRadius = TimeUtils::PingPong( |
| 0, kRadiusPingPoingPeriod, kRadiusPingPoingShift, kMinRadius, kMaxRadius); |
| fAnimBlurRadius = TimeUtils::PingPong(0, |
| kBlurRadiusPingPoingPeriod, |
| kBlurRadiusPingPoingShift, |
| kMinBlurRadius, |
| kMaxBlurRadius); |
| } |
| |
| protected: |
| bool runAsBench() const override { return true; } |
| |
| SkString onShortName() override { return SkString("blurcircles2"); } |
| |
| SkISize onISize() override { |
| return SkISize::Make(730, 1350); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| constexpr SkScalar kMaxR = kMaxRadius + kMaxBlurRadius; |
| |
| auto almostCircleMaker = [] (SkScalar radius) { |
| return SkPathBuilder().addArc(SkRect::MakeXYWH(-radius, -radius, 2 * radius, 2 * radius), 0, 355) |
| .setIsVolatile(true) |
| .close() |
| .detach(); |
| }; |
| |
| auto blurMaker = [] (SkScalar radius) ->sk_sp<SkMaskFilter> { |
| return SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, |
| SkBlurMask::ConvertRadiusToSigma(radius)); |
| }; |
| |
| SkPaint paint; |
| paint.setColor(SK_ColorBLACK); |
| |
| if (this->getMode() == kSample_Mode) { |
| paint.setMaskFilter(blurMaker(fAnimBlurRadius)); |
| SkISize size = canvas->getBaseLayerSize(); |
| SkPath almostCircle = almostCircleMaker(fAnimRadius); |
| canvas->save(); |
| canvas->translate(size.fWidth / 2.f, size.fHeight / 4.f); |
| canvas->drawCircle(0, 0, fAnimRadius, paint); |
| canvas->translate(0, 2 * kMaxR); |
| canvas->drawPath(almostCircle, paint); |
| canvas->restore(); |
| } else { |
| bool benchMode = this->getMode() == kBench_Mode; |
| canvas->save(); |
| constexpr SkScalar kPad = 5; |
| constexpr SkScalar kRadiusSteps = 5; |
| constexpr SkScalar kBlurRadiusSteps = 5; |
| canvas->translate(kPad + kMinRadius + kMaxBlurRadius, |
| kPad + kMinRadius + kMaxBlurRadius); |
| constexpr SkScalar kDeltaRadius = (kMaxRadius - kMinRadius) / kRadiusSteps; |
| constexpr SkScalar kDeltaBlurRadius = (kMaxBlurRadius - kMinBlurRadius) / |
| kBlurRadiusSteps; |
| SkScalar lineWidth = 0; |
| if (!benchMode) { |
| for (int r = 0; r < kRadiusSteps - 1; ++r) { |
| const SkScalar radius = r * kDeltaRadius + kMinRadius; |
| lineWidth += 2 * (radius + kMaxBlurRadius) + kPad; |
| } |
| } |
| for (int br = 0; br < kBlurRadiusSteps; ++br) { |
| SkScalar blurRadius = br * kDeltaBlurRadius + kMinBlurRadius; |
| if (benchMode) { |
| blurRadius += fRandom.nextSScalar1() * kDeltaBlurRadius; |
| } |
| const SkScalar maxRowR = blurRadius + kMaxRadius; |
| paint.setMaskFilter(blurMaker(blurRadius)); |
| canvas->save(); |
| for (int r = 0; r < kRadiusSteps; ++r) { |
| SkScalar radius = r * kDeltaRadius + kMinRadius; |
| if (benchMode) { |
| radius += fRandom.nextSScalar1() * kDeltaRadius; |
| } |
| SkPath almostCircle; |
| if (!benchMode) { |
| almostCircle = almostCircleMaker(radius); |
| } |
| canvas->save(); |
| canvas->drawCircle(0, 0, radius, paint); |
| canvas->translate(0, 2 * maxRowR + kPad); |
| if (!benchMode) { |
| canvas->drawPath(almostCircle, paint); |
| } |
| canvas->restore(); |
| const SkScalar maxColR = radius + kMaxBlurRadius; |
| canvas->translate(maxColR * 2 + kPad, 0); |
| } |
| canvas->restore(); |
| if (!benchMode) { |
| SkPaint blackPaint; |
| blackPaint.setColor(SK_ColorBLACK); |
| const SkScalar lineY = 3 * maxRowR + 1.5f * kPad; |
| if (br != kBlurRadiusSteps - 1) { |
| canvas->drawLine(0, lineY, lineWidth, lineY, blackPaint); |
| } |
| } |
| canvas->translate(0, maxRowR * 4 + 2 * kPad); |
| } |
| canvas->restore(); |
| } |
| } |
| |
| bool onAnimate(double nanos) override { |
| fAnimRadius = TimeUtils::PingPong(1e-9 * nanos, kRadiusPingPoingPeriod, kRadiusPingPoingShift, kMinRadius, |
| kMaxRadius); |
| fAnimBlurRadius = TimeUtils::PingPong(1e-9 * nanos, kBlurRadiusPingPoingPeriod, kBlurRadiusPingPoingShift, |
| kMinBlurRadius, kMaxBlurRadius); |
| return true; |
| } |
| |
| private: |
| inline static constexpr SkScalar kMinRadius = 15; |
| inline static constexpr SkScalar kMaxRadius = 45; |
| inline static constexpr SkScalar kRadiusPingPoingPeriod = 8; |
| inline static constexpr SkScalar kRadiusPingPoingShift = 3; |
| |
| inline static constexpr SkScalar kMinBlurRadius = 5; |
| inline static constexpr SkScalar kMaxBlurRadius = 45; |
| inline static constexpr SkScalar kBlurRadiusPingPoingPeriod = 3; |
| inline static constexpr SkScalar kBlurRadiusPingPoingShift = 1.5; |
| |
| SkScalar fAnimRadius; |
| SkScalar fAnimBlurRadius; |
| |
| SkRandom fRandom; |
| |
| using INHERITED = skiagm::GM; |
| }; |
| |
| DEF_GM(return new BlurCircles2GM();) |