| /* |
| * 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 "bench/Benchmark.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkImage.h" |
| #include "include/effects/SkImageFilters.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/GrRecordingContext.h" |
| #include "tools/Resources.h" |
| |
| // 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 Benchmark { |
| public: |
| ImageFilterDAGBench() {} |
| |
| protected: |
| const char* onGetName() override { |
| return "image_filter_dag"; |
| } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| const SkRect rect = SkRect::Make(SkIRect::MakeWH(400, 400)); |
| |
| // Set up the filters once, we're not interested in measuring allocation time here |
| sk_sp<SkImageFilter> blur(SkImageFilters::Blur(20.0f, 20.0f, nullptr)); |
| sk_sp<SkImageFilter> inputs[kNumInputs]; |
| for (int i = 0; i < kNumInputs; ++i) { |
| inputs[i] = blur; |
| } |
| SkPaint paint; |
| paint.setImageFilter(SkImageFilters::Merge(inputs, kNumInputs)); |
| |
| // Only measure the filter computations done in drawRect() |
| // TODO (michaelludwig) - This benchmark, and the ones defined below, allocate their filters |
| // outside of the loop. This means that repeatedly drawing with the same filter will hit |
| // the global image filter cache inside the loop. Raster backend uses this cache so will see |
| // artificially improved performance. Ganesh will not because it uses a cache per filter |
| // call, so only within-DAG cache hits are measured (as desired). skbug:9297 wants to move |
| // raster backend to the same pattern, which will make the benchmark executions fair again. |
| for (int j = 0; j < loops; j++) { |
| canvas->drawRect(rect, paint); |
| } |
| } |
| |
| private: |
| static const int kNumInputs = 5; |
| |
| using INHERITED = Benchmark; |
| }; |
| |
| class ImageMakeWithFilterDAGBench : public Benchmark { |
| public: |
| ImageMakeWithFilterDAGBench() {} |
| |
| protected: |
| const char* onGetName() override { |
| return "image_make_with_filter_dag"; |
| } |
| |
| void onDelayedSetup() override { |
| fImage = GetResourceAsImage("images/mandrill_512.png"); |
| } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| SkIRect subset = SkIRect::MakeSize(fImage->dimensions()); |
| SkIPoint offset = SkIPoint::Make(0, 0); |
| SkIRect discardSubset; |
| |
| auto dContext = GrAsDirectContext(canvas->recordingContext()); |
| // makeWithFilter will only use the GPU backend if the image is already a texture |
| sk_sp<SkImage> image = fImage->makeTextureImage(dContext); |
| if (!image) { |
| image = fImage; |
| } |
| |
| // Set up the filters once so the allocation cost isn't included per-loop |
| sk_sp<SkImageFilter> blur(SkImageFilters::Blur(20.0f, 20.0f, nullptr)); |
| sk_sp<SkImageFilter> inputs[kNumInputs]; |
| for (int i = 0; i < kNumInputs; ++i) { |
| inputs[i] = blur; |
| } |
| sk_sp<SkImageFilter> mergeFilter = SkImageFilters::Merge(inputs, kNumInputs); |
| |
| // But measure makeWithFilter() per loop since that's the focus of this benchmark |
| for (int j = 0; j < loops; j++) { |
| image = image->makeWithFilter(dContext, mergeFilter.get(), subset, subset, |
| &discardSubset, &offset); |
| SkASSERT(image && image->dimensions() == fImage->dimensions()); |
| } |
| } |
| |
| private: |
| static const int kNumInputs = 5; |
| sk_sp<SkImage> fImage; |
| |
| using INHERITED = Benchmark; |
| }; |
| |
| // Exercise a blur filter connected to both inputs of an SkDisplacementMapEffect. |
| |
| class ImageFilterDisplacedBlur : public Benchmark { |
| public: |
| ImageFilterDisplacedBlur() {} |
| |
| protected: |
| const char* onGetName() override { |
| return "image_filter_displaced_blur"; |
| } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| // Setup filter once |
| sk_sp<SkImageFilter> blur(SkImageFilters::Blur(4.0f, 4.0f, nullptr)); |
| SkScalar scale = 2; |
| |
| SkPaint paint; |
| paint.setImageFilter(SkImageFilters::DisplacementMap(SkColorChannel::kR, SkColorChannel::kR, |
| scale, blur, blur)); |
| |
| SkRect rect = SkRect::Make(SkIRect::MakeWH(400, 400)); |
| |
| // As before, measure just the filter computation time inside the loops |
| for (int j = 0; j < loops; j++) { |
| canvas->drawRect(rect, paint); |
| } |
| } |
| |
| private: |
| using INHERITED = Benchmark; |
| }; |
| |
| // Exercise an Xfermode kSrcIn filter compositing two inputs which have a small intersection. |
| class ImageFilterXfermodeIn : public Benchmark { |
| public: |
| ImageFilterXfermodeIn() {} |
| |
| protected: |
| const char* onGetName() override { return "image_filter_xfermode_in"; } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| // Allocate filters once to avoid measuring instantiation time |
| auto blur = SkImageFilters::Blur(20.0f, 20.0f, nullptr); |
| auto offset1 = SkImageFilters::Offset(100.0f, 100.0f, blur); |
| auto offset2 = SkImageFilters::Offset(-100.0f, -100.0f, blur); |
| auto xfermode = |
| SkImageFilters::Blend(SkBlendMode::kSrcIn, offset1, offset2, nullptr); |
| |
| SkPaint paint; |
| paint.setImageFilter(xfermode); |
| |
| // Measure only the filter time |
| for (int j = 0; j < loops; j++) { |
| canvas->drawRect(SkRect::MakeWH(200.0f, 200.0f), paint); |
| } |
| } |
| |
| private: |
| using INHERITED = Benchmark; |
| }; |
| |
| DEF_BENCH(return new ImageFilterDAGBench;) |
| DEF_BENCH(return new ImageMakeWithFilterDAGBench;) |
| DEF_BENCH(return new ImageFilterDisplacedBlur;) |
| DEF_BENCH(return new ImageFilterXfermodeIn;) |