robertphillips@google.com | 1d2f631 | 2013-05-13 14:10:31 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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 "SkBenchmark.h" |
| 9 | #include "SkCanvas.h" |
| 10 | #include "SkPaint.h" |
| 11 | #include "SkRandom.h" |
| 12 | #include "SkBlurMaskFilter.h" |
| 13 | #include "SkLayerDrawLooper.h" |
| 14 | |
| 15 | // This bench replicates a problematic use case of a draw looper used |
| 16 | // to create an inner blurred rect |
| 17 | class RectoriBench : public SkBenchmark { |
| 18 | public: |
| 19 | RectoriBench(void* param) : INHERITED(param) {} |
| 20 | |
| 21 | protected: |
| 22 | |
| 23 | virtual const char* onGetName() { |
| 24 | return "rectori"; |
| 25 | } |
| 26 | |
| 27 | virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 28 | SkMWCRandom Random; |
| 29 | |
| 30 | for (int i = 0; i < N; i++) { |
| 31 | SkScalar blurRad = Random.nextRangeScalar(1.5f, 25.0f); |
| 32 | SkScalar size = Random.nextRangeScalar(20*blurRad, 50*blurRad); |
| 33 | |
| 34 | SkScalar x = Random.nextRangeScalar(0.0f, W - size); |
| 35 | SkScalar y = Random.nextRangeScalar(0.0f, H - size); |
| 36 | |
| 37 | SkRect inner = { x, y, x + size, y + size }; |
| 38 | |
| 39 | SkRect outer(inner); |
| 40 | // outer is always outset either 2x or 4x the blur radius (we go with 2x) |
robertphillips@google.com | 63a3f6f | 2013-05-13 14:40:34 +0000 | [diff] [blame] | 41 | outer.outset(2*blurRad, 2*blurRad); |
robertphillips@google.com | 1d2f631 | 2013-05-13 14:10:31 +0000 | [diff] [blame] | 42 | |
| 43 | SkPath p; |
| 44 | |
| 45 | p.addRect(outer); |
| 46 | p.addRect(inner); |
| 47 | p.setFillType(SkPath::kEvenOdd_FillType); |
| 48 | |
| 49 | // This will be used to translate the normal draw outside the |
| 50 | // clip rect and translate the blurred version back inside |
| 51 | SkScalar translate = 2.0f * size; |
| 52 | |
| 53 | SkPaint paint; |
| 54 | paint.setLooper(this->createLooper(-translate, blurRad))->unref(); |
| 55 | paint.setColor(0xff000000 | Random.nextU()); |
| 56 | paint.setAntiAlias(true); |
| 57 | |
| 58 | canvas->save(); |
| 59 | // clip always equals inner rect so we get the inside blur |
| 60 | canvas->clipRect(inner); |
| 61 | canvas->translate(translate, 0); |
| 62 | canvas->drawPath(p, paint); |
| 63 | canvas->restore(); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | private: |
| 68 | enum { |
| 69 | W = 640, |
| 70 | H = 480, |
| 71 | }; |
| 72 | |
| 73 | enum { N = SkBENCHLOOP(100) }; |
| 74 | |
| 75 | SkLayerDrawLooper* createLooper(SkScalar xOff, SkScalar radius) { |
| 76 | SkLayerDrawLooper* looper = new SkLayerDrawLooper; |
| 77 | |
| 78 | //----------------------------------------------- |
| 79 | SkLayerDrawLooper::LayerInfo info; |
| 80 | |
| 81 | info.fFlagsMask = 0; |
| 82 | // TODO: add a color filter to better match what is seen in the wild |
skia.committer@gmail.com | 0431b87 | 2013-05-14 07:01:11 +0000 | [diff] [blame] | 83 | info.fPaintBits = /* SkLayerDrawLooper::kColorFilter_Bit |*/ |
robertphillips@google.com | 1d2f631 | 2013-05-13 14:10:31 +0000 | [diff] [blame] | 84 | SkLayerDrawLooper::kMaskFilter_Bit; |
| 85 | info.fColorMode = SkXfermode::kDst_Mode; |
| 86 | info.fOffset.set(xOff, 0); |
| 87 | info.fPostTranslate = false; |
| 88 | |
| 89 | SkPaint* paint = looper->addLayer(info); |
| 90 | |
robertphillips@google.com | 63a3f6f | 2013-05-13 14:40:34 +0000 | [diff] [blame] | 91 | SkMaskFilter* mf = SkBlurMaskFilter::Create(radius, |
robertphillips@google.com | 1d2f631 | 2013-05-13 14:10:31 +0000 | [diff] [blame] | 92 | SkBlurMaskFilter::kNormal_BlurStyle, |
| 93 | SkBlurMaskFilter::kHighQuality_BlurFlag); |
| 94 | paint->setMaskFilter(mf)->unref(); |
| 95 | |
| 96 | //----------------------------------------------- |
| 97 | info.fPaintBits = 0; |
| 98 | info.fOffset.set(0, 0); |
| 99 | |
| 100 | paint = looper->addLayer(info); |
| 101 | return looper; |
| 102 | } |
| 103 | |
| 104 | typedef SkBenchmark INHERITED; |
| 105 | }; |
| 106 | |
| 107 | |
| 108 | DEF_BENCH( return SkNEW_ARGS(RectoriBench, (p)); ) |