75 lines
2.2 KiB
C++
75 lines
2.2 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 "SkConfig8888.h"
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#include "SkString.h"
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class PremulAndUnpremulAlphaOpsBench : public SkBenchmark {
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public:
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PremulAndUnpremulAlphaOpsBench(void* param, SkCanvas::Config8888 config)
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: INHERITED(param) {
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fUnPremulConfig = config;
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fName.printf("premul_and_unpremul_alpha_%s",
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(config == SkCanvas::kRGBA_Unpremul_Config8888) ?
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"RGBA8888" : "Native8888");
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}
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protected:
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virtual const char* onGetName() SK_OVERRIDE {
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return fName.c_str();
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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canvas->clear(SK_ColorBLACK);
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SkISize size = canvas->getDeviceSize();
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SkBitmap bmp1;
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bmp1.setConfig(SkBitmap::kARGB_8888_Config, size.width(),
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size.height());
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bmp1.allocPixels();
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SkAutoLockPixels alp(bmp1);
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uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp1.getPixels());
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for (int h = 0; h < size.height(); ++h) {
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for (int w = 0; w < size.width(); ++w)
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pixels[h * size.width() + w] = SkPackConfig8888(fUnPremulConfig,
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h & 0xFF, w & 0xFF, w & 0xFF, w & 0xFF);
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}
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SkBitmap bmp2;
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bmp2.setConfig(SkBitmap::kARGB_8888_Config, size.width(),
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size.height());
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static const int kLoopCount = SkBENCHLOOP(10);
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for (int loop = 0; loop < kLoopCount; ++loop) {
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// Unpremul -> Premul
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canvas->writePixels(bmp1, 0, 0, fUnPremulConfig);
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// Premul -> Unpremul
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canvas->readPixels(&bmp2, 0, 0, fUnPremulConfig);
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}
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}
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private:
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SkCanvas::Config8888 fUnPremulConfig;
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SkString fName;
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typedef SkBenchmark INHERITED;
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};
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static SkBenchmark* fact0(void* p) {
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return new PremulAndUnpremulAlphaOpsBench(p,
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SkCanvas::kRGBA_Unpremul_Config8888);
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}
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static SkBenchmark* fact1(void* p) {
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return new PremulAndUnpremulAlphaOpsBench(p,
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SkCanvas::kNative_Unpremul_Config8888);
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}
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static BenchRegistry gReg0(fact0);
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static BenchRegistry gReg1(fact1);
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