From 0d64356efd8a3ca40d39729f62e0fa9a5bc3a365 Mon Sep 17 00:00:00 2001 From: "senorblanco@chromium.org" Date: Thu, 10 Apr 2014 16:16:13 +0000 Subject: Add a new bench that tests a simple image filter DAG. This bench exercises a blur filter connected to 5 inputs of the same merge filter. R=junov@chromium.org Review URL: https://codereview.chromium.org/233383002 git-svn-id: http://skia.googlecode.com/svn/trunk@14135 2bbb7eff-a529-9590-31e7-b0007b416f81 --- bench/ImageFilterDAGBench.cpp | 46 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 bench/ImageFilterDAGBench.cpp (limited to 'bench/ImageFilterDAGBench.cpp') 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 blur(SkBlurImageFilter::Create(20.0f, 20.0f)); + SkImageFilter* inputs[kNumInputs]; + for (int i = 0; i < kNumInputs; ++i) { + inputs[i] = blur.get(); + } + SkAutoTUnref 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;) -- cgit v1.2.3