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