47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
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/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkBenchmark.h"
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#include "SkBlurImageFilter.h"
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#include "SkMergeImageFilter.h"
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#include "SkCanvas.h"
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enum { kNumInputs = 5 };
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// Exercise a blur filter connected to 5 inputs of the same merge filter.
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// This bench shows an improvement in performance once cacheing of re-used
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// nodes is implemented, since the DAG is no longer flattened to a tree.
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class ImageFilterDAGBench : public SkBenchmark {
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public:
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ImageFilterDAGBench() {
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}
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protected:
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virtual const char* onGetName() SK_OVERRIDE {
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return "image_filter_dag";
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}
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virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
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SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(20.0f, 20.0f));
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SkImageFilter* inputs[kNumInputs];
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for (int i = 0; i < kNumInputs; ++i) {
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inputs[i] = blur.get();
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}
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SkAutoTUnref<SkImageFilter> merge(SkMergeImageFilter::Create(inputs, kNumInputs));
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SkPaint paint;
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paint.setImageFilter(merge);
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SkRect rect = SkRect::Make(SkIRect::MakeWH(400, 400));
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canvas->drawRect(rect, paint);
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}
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private:
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typedef SkBenchmark INHERITED;
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};
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DEF_BENCH(return new ImageFilterDAGBench;)
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