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| -rw-r--r-- | bench/ImageFilterDAGBench.cpp | 46 | ||||
| -rw-r--r-- | gyp/bench.gypi | 1 |
2 files changed, 47 insertions, 0 deletions
diff --git a/bench/ImageFilterDAGBench.cpp b/bench/ImageFilterDAGBench.cpp new file mode 100644 index 0000000000..e6a3169507 --- /dev/null +++ b/bench/ImageFilterDAGBench.cpp @@ -0,0 +1,46 @@ +/* + * 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 "SkBenchmark.h" +#include "SkBlurImageFilter.h" +#include "SkMergeImageFilter.h" +#include "SkCanvas.h" + +enum { kNumInputs = 5 }; + +// Exercise a blur filter connected to 5 inputs of the same merge filter. +// This bench shows an improvement in performance once cacheing of re-used +// nodes is implemented, since the DAG is no longer flattened to a tree. + +class ImageFilterDAGBench : public SkBenchmark { +public: + ImageFilterDAGBench() { + } + +protected: + virtual const char* onGetName() SK_OVERRIDE { + return "image_filter_dag"; + } + + virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { + SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(20.0f, 20.0f)); + SkImageFilter* inputs[kNumInputs]; + for (int i = 0; i < kNumInputs; ++i) { + inputs[i] = blur.get(); + } + SkAutoTUnref<SkImageFilter> merge(SkMergeImageFilter::Create(inputs, kNumInputs)); + SkPaint paint; + paint.setImageFilter(merge); + SkRect rect = SkRect::Make(SkIRect::MakeWH(400, 400)); + canvas->drawRect(rect, paint); + } + +private: + typedef SkBenchmark INHERITED; +}; + +DEF_BENCH(return new ImageFilterDAGBench;) diff --git a/gyp/bench.gypi b/gyp/bench.gypi index 6680e75289..1b3bc12741 100644 --- a/gyp/bench.gypi +++ b/gyp/bench.gypi @@ -44,6 +44,7 @@ '../bench/HairlinePathBench.cpp', '../bench/ImageCacheBench.cpp', '../bench/ImageDecodeBench.cpp', + '../bench/ImageFilterDAGBench.cpp', '../bench/InterpBench.cpp', '../bench/LightingBench.cpp', '../bench/LineBench.cpp', |