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Diffstat (limited to 'bench/FSRectBench.cpp')
-rw-r--r-- | bench/FSRectBench.cpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/bench/FSRectBench.cpp b/bench/FSRectBench.cpp new file mode 100644 index 0000000000..64c1c3d35f --- /dev/null +++ b/bench/FSRectBench.cpp @@ -0,0 +1,66 @@ + +/* + * 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" + +/** + * Draws full screen opaque rectangles. It is designed to test any optimizations in the GPU backend + * to turn such draws into clears. + */ +class FSRectBench : public SkBenchmark { +public: + FSRectBench(void* param) + : INHERITED(param) + , fInit(false) { + } + +protected: + virtual const char* onGetName() SK_OVERRIDE { return "fullscreen_rects"; } + + virtual void onPreDraw() SK_OVERRIDE { + if (!fInit) { + SkMWCRandom rand; + static const SkScalar kMinOffset = 0; + static const SkScalar kMaxOffset = 100 * SK_Scalar1; + static const SkScalar kOffsetRange = kMaxOffset - kMinOffset; + for (int i = 0; i < N; ++i) { + fRects[i].fLeft = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange); + fRects[i].fTop = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange); + fRects[i].fRight = W + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange); + fRects[i].fBottom = H + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange); + fColors[i] = rand.nextU() | 0xFF000000; + } + fInit = true; + } + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + SkPaint paint; + for (int i = 0; i < N; ++i) { + paint.setColor(fColors[i]); + canvas->drawRect(fRects[i], paint); + } + } + +private: + enum { + W = 640, + H = 480, + N = SkBENCHLOOP(300) + }; + SkRect fRects[N]; + SkColor fColors[N]; + bool fInit; + + typedef SkBenchmark INHERITED; +}; + +DEF_BENCH( return SkNEW_ARGS(FSRectBench, (p)); ) |