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/*
* 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 "SkConfig8888.h"
#include "SkString.h"
#include "sk_tool_utils.h"
class PremulAndUnpremulAlphaOpsBench : public SkBenchmark {
enum {
W = 256,
H = 256,
};
SkBitmap fBmp1, fBmp2;
public:
PremulAndUnpremulAlphaOpsBench(SkColorType ct) {
fColorType = ct;
fName.printf("premul_and_unpremul_alpha_%s", sk_tool_utils::colortype_name(ct));
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onPreDraw() {
SkImageInfo info = SkImageInfo::Make(W, H, fColorType, kPremul_SkAlphaType);
fBmp1.allocPixels(info); // used in writePixels
for (int h = 0; h < H; ++h) {
for (int w = 0; w < W; ++w) {
// SkColor places A in the right slot for either RGBA or BGRA
*fBmp1.getAddr32(w, h) = SkColorSetARGB(h & 0xFF, w & 0xFF, w & 0xFF, w & 0xFF);
}
}
fBmp2.allocPixels(info); // used in readPixels()
}
virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
canvas->clear(SK_ColorBLACK);
for (int loop = 0; loop < loops; ++loop) {
// Unpremul -> Premul
canvas->writePixels(fBmp1.info(), fBmp1.getPixels(), fBmp1.rowBytes(), 0, 0);
// Premul -> Unpremul
canvas->readPixels(fBmp2.info(), fBmp2.getPixels(), fBmp2.rowBytes(), 0, 0);
}
}
private:
SkColorType fColorType;
SkString fName;
typedef SkBenchmark INHERITED;
};
DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(kRGBA_8888_SkColorType));
DEF_BENCH(return new PremulAndUnpremulAlphaOpsBench(kBGRA_8888_SkColorType));
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