diff options
Diffstat (limited to 'bench/XfermodeBench.cpp')
-rw-r--r-- | bench/XfermodeBench.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/bench/XfermodeBench.cpp b/bench/XfermodeBench.cpp new file mode 100644 index 0000000000..8045a26ed9 --- /dev/null +++ b/bench/XfermodeBench.cpp @@ -0,0 +1,70 @@ + +/* + * Copyright 2013 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 "SkCanvas.h" +#include "SkPaint.h" +#include "SkRandom.h" +#include "SkString.h" +#include "SkXfermode.h" + +// Benchmark that draws non-AA rects with an SkXfermode::Mode +class XfermodeBench : public SkBenchmark { +public: + XfermodeBench(void* param, SkXfermode::Mode mode) : SkBenchmark(param) { + fXfermode.reset(SkXfermode::Create(mode)); + SkASSERT(NULL != fXfermode.get() || SkXfermode::kSrcOver_Mode == mode); + fName.printf("Xfermode_%s", SkXfermode::ModeName(mode)); + } + +protected: + virtual const char* onGetName() SK_OVERRIDE { return fName.c_str(); } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + SkISize size = canvas->getDeviceSize(); + SkMWCRandom random; + for (int i = 0; i < kNumRects; ++i) { + SkPaint paint; + paint.setXfermode(fXfermode.get()); + paint.setColor(random.nextU()); + SkScalar w = random.nextRangeScalar(SkIntToScalar(kMinSize), SkIntToScalar(kMaxSize)); + SkScalar h = random.nextRangeScalar(SkIntToScalar(kMinSize), SkIntToScalar(kMaxSize)); + SkRect rect = SkRect::MakeXYWH( + random.nextUScalar1() * (size.fWidth - w), + random.nextUScalar1() * (size.fHeight - h), + w, + h + ); + canvas->drawRect(rect, paint); + } + } + +private: + enum { + kNumRects = SkBENCHLOOP(1000), + kMinSize = 10, + kMaxSize = 400, + }; + SkAutoTUnref<SkXfermode> fXfermode; + SkString fName; + + typedef SkBenchmark INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + + +// These modes were chosen because they are expected to be successively harder for the GPU. +// kSrc can disable blending, kSrcOver cannot, kDarken requires reading the dst pixel in the shader. +static SkBenchmark* Fact0(void* p) { return new XfermodeBench(p, SkXfermode::kSrc_Mode); } +static SkBenchmark* Fact1(void* p) { return new XfermodeBench(p, SkXfermode::kSrcOver_Mode); } +static SkBenchmark* Fact2(void* p) { return new XfermodeBench(p, SkXfermode::kDarken_Mode); } + +static BenchRegistry gReg0(Fact0); +static BenchRegistry gReg1(Fact1); +static BenchRegistry gReg2(Fact2); |