77aa62c01e
Looks like the conversions are complicated enough to not compile away. No need to mess with random number generation, etc. We still need to blackhole it into a volatile in the end. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1682793002 Review URL: https://codereview.chromium.org/1682793002
73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/*
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* Copyright 2015 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 "SkColor.h"
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#include "SkNx.h"
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// Writing into this array prevents the loops from being compiled away.
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static volatile float blackhole[4];
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template <typename T>
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struct Sk4fRoundtripBench : public Benchmark {
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Sk4fRoundtripBench() {}
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const char* onGetName() override {
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switch (sizeof(T)) {
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case 1: return "Sk4f_roundtrip_u8";
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case 2: return "Sk4f_roundtrip_u16";
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case 4: return "Sk4f_roundtrip_int";
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}
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SkASSERT(false);
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return "";
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}
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bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
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void onDraw(int loops, SkCanvas* canvas) override {
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Sk4f fs(1,2,3,4);
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while (loops --> 0) {
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fs = SkNx_cast<float>(SkNx_cast<T>(fs));
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}
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fs.store((float*)blackhole);
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}
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};
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DEF_BENCH(return new Sk4fRoundtripBench<uint8_t>;)
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DEF_BENCH(return new Sk4fRoundtripBench<uint16_t>;)
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DEF_BENCH(return new Sk4fRoundtripBench<int>;)
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struct Sk4fGradientBench : public Benchmark {
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const char* onGetName() override { return "Sk4f_gradient"; }
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bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
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SkPMColor fDevice[100];
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void onDraw(int loops, SkCanvas*) override {
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Sk4f c0(0,0,255,255),
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c1(255,0,0,255),
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dc = c1 - c0,
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fx(0.1f),
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dx(0.002f),
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dcdx(dc*dx),
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dcdx4(dcdx+dcdx+dcdx+dcdx);
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for (int n = 0; n < loops; n++) {
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Sk4f a = c0 + dc*fx + Sk4f(0.5f), // add an extra 0.5f to get rounding for free.
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b = a + dcdx,
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c = b + dcdx,
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d = c + dcdx;
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for (size_t i = 0; i < SK_ARRAY_COUNT(fDevice); i += 4) {
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Sk4f_ToBytes((uint8_t*)(fDevice+i), a, b, c, d);
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a = a + dcdx4;
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b = b + dcdx4;
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c = c + dcdx4;
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d = d + dcdx4;
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}
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}
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}
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};
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DEF_BENCH(return new Sk4fGradientBench;)
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