67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
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/*
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* Copyright 2013 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 "SkCanvas.h"
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#include "SkPaint.h"
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#include "SkRandom.h"
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/**
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* Draws full screen opaque rectangles. It is designed to test any optimizations in the GPU backend
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* to turn such draws into clears.
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*/
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class FSRectBench : public SkBenchmark {
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public:
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FSRectBench(void* param)
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: INHERITED(param)
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, fInit(false) {
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}
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protected:
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virtual const char* onGetName() SK_OVERRIDE { return "fullscreen_rects"; }
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virtual void onPreDraw() SK_OVERRIDE {
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if (!fInit) {
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SkMWCRandom rand;
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static const SkScalar kMinOffset = 0;
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static const SkScalar kMaxOffset = 100 * SK_Scalar1;
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static const SkScalar kOffsetRange = kMaxOffset - kMinOffset;
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for (int i = 0; i < N; ++i) {
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fRects[i].fLeft = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange);
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fRects[i].fTop = -kMinOffset - SkScalarMul(rand.nextUScalar1(), kOffsetRange);
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fRects[i].fRight = W + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange);
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fRects[i].fBottom = H + kMinOffset + SkScalarMul(rand.nextUScalar1(), kOffsetRange);
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fColors[i] = rand.nextU() | 0xFF000000;
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}
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fInit = true;
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}
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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SkPaint paint;
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for (int i = 0; i < N; ++i) {
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paint.setColor(fColors[i]);
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canvas->drawRect(fRects[i], paint);
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}
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}
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private:
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enum {
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W = 640,
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H = 480,
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N = SkBENCHLOOP(300)
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};
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SkRect fRects[N];
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SkColor fColors[N];
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bool fInit;
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typedef SkBenchmark INHERITED;
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};
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DEF_BENCH( return SkNEW_ARGS(FSRectBench, (p)); )
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